UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 

Pull second vfs update from Al Viro:
 "Now that net-next went in...  Here's the next big chunk - killing
  ->aio_read() and ->aio_write().

  There'll be one more pile today (direct_IO changes and
  generic_write_checks() cleanups/fixes), but I'd prefer to keep that
  one separate"

* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits)
  ->aio_read and ->aio_write removed
  pcm: another weird API abuse
  infinibad: weird APIs switched to ->write_iter()
  kill do_sync_read/do_sync_write
  fuse: use iov_iter_get_pages() for non-splice path
  fuse: switch to ->read_iter/->write_iter
  switch drivers/char/mem.c to ->read_iter/->write_iter
  make new_sync_{read,write}() static
  coredump: accept any write method
  switch /dev/loop to vfs_iter_write()
  serial2002: switch to __vfs_read/__vfs_write
  ashmem: use __vfs_read()
  export __vfs_read()
  autofs: switch to __vfs_write()
  new helper: __vfs_write()
  switch hugetlbfs to ->read_iter()
  coda: switch to ->read_iter/->write_iter
  ncpfs: switch to ->read_iter/->write_iter
  net/9p: remove (now-)unused helpers
  p9_client_attach(): set fid->uid correctly
  ...
This commit is contained in:
Linus Torvalds 2015-04-15 13:22:56 -07:00
parent c841e12add 8436318205
commit fa927894bb
90 changed files with 598 additions and 1185 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/filesystems/Locking
View File

@ -429,8 +429,6 @@ prototypes:
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
int (*iterate) (struct file *, struct dir_context *);

12
Documentation/filesystems/porting
View File

@ -471,3 +471,15 @@ in your dentry operations instead.
[mandatory]
f_dentry is gone; use f_path.dentry, or, better yet, see if you can avoid
it entirely.
--
[mandatory]
never call ->read() and ->write() directly; use __vfs_{read,write} or
wrappers; instead of checking for ->write or ->read being NULL, look for
FMODE_CAN_{WRITE,READ} in file->f_mode.
--
[mandatory]
do _not_ use new_sync_{read,write} for ->read/->write; leave it NULL
instead.
--
[mandatory]
->aio_read/->aio_write are gone. Use ->read_iter/->write_iter.

6
Documentation/filesystems/vfs.txt
View File

@ -804,8 +804,6 @@ struct file_operations {
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
int (*iterate) (struct file *, struct dir_context *);
@ -838,14 +836,10 @@ otherwise noted.
read: called by read(2) and related system calls
aio_read: vectored, possibly asynchronous read
read_iter: possibly asynchronous read with iov_iter as destination
write: called by write(2) and related system calls
aio_write: vectored, possibly asynchronous write
write_iter: possibly asynchronous write with iov_iter as source
iterate: called when the VFS needs to read the directory contents

2
arch/s390/hypfs/inode.c
View File

@ -437,8 +437,6 @@ struct dentry *hypfs_create_str(struct dentry *dir,
static const struct file_operations hypfs_file_ops = {
.open = hypfs_open,
.release = hypfs_release,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = hypfs_read_iter,
.write_iter = hypfs_write_iter,
.llseek = no_llseek,

12
drivers/block/loop.c
View File

@ -75,6 +75,7 @@
#include <linux/sysfs.h>
#include <linux/miscdevice.h>
#include <linux/falloc.h>
#include <linux/uio.h>
#include "loop.h"
#include <asm/uaccess.h>
@ -229,13 +230,14 @@ lo_do_transfer(struct loop_device *lo, int cmd,
static int __do_lo_send_write(struct file *file,
u8 *buf, const int len, loff_t pos)
{
struct kvec kvec = {.iov_base = buf, .iov_len = len};
struct iov_iter from;
ssize_t bw;
mm_segment_t old_fs = get_fs();
iov_iter_kvec(&from, ITER_KVEC | WRITE, &kvec, 1, len);
file_start_write(file);
set_fs(get_ds());
bw = file->f_op->write(file, buf, len, &pos);
set_fs(old_fs);
bw = vfs_iter_write(file, &from, &pos);
file_end_write(file);
if (likely(bw == len))
return 0;
@ -767,7 +769,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
goto out_putf;
if (!(file->f_mode & FMODE_WRITE) || !(mode & FMODE_WRITE) ||
!file->f_op->write)
!file->f_op->write_iter)
lo_flags |= LO_FLAGS_READ_ONLY;
lo_blocksize = S_ISBLK(inode->i_mode) ?

20
drivers/char/mem.c
View File

@ -607,16 +607,16 @@ static ssize_t write_null(struct file *file, const char __user *buf,
return count;
}
static ssize_t aio_read_null(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
static ssize_t read_iter_null(struct kiocb *iocb, struct iov_iter *to)
{
return 0;
}
static ssize_t aio_write_null(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
static ssize_t write_iter_null(struct kiocb *iocb, struct iov_iter *from)
{
return iov_length(iov, nr_segs);
size_t count = iov_iter_count(from);
iov_iter_advance(from, count);
return count;
}
static int pipe_to_null(struct pipe_inode_info *info, struct pipe_buffer *buf,
@ -718,7 +718,7 @@ static int open_port(struct inode *inode, struct file *filp)
#define zero_lseek null_lseek
#define full_lseek null_lseek
#define write_zero write_null
#define aio_write_zero aio_write_null
#define write_iter_zero write_iter_null
#define open_mem open_port
#define open_kmem open_mem
@ -750,8 +750,8 @@ static const struct file_operations null_fops = {
.llseek = null_lseek,
.read = read_null,
.write = write_null,
.aio_read = aio_read_null,
.aio_write = aio_write_null,
.read_iter = read_iter_null,
.write_iter = write_iter_null,
.splice_write = splice_write_null,
};
@ -764,10 +764,9 @@ static const struct file_operations __maybe_unused port_fops = {
static const struct file_operations zero_fops = {
.llseek = zero_lseek,
.read = new_sync_read,
.write = write_zero,
.read_iter = read_iter_zero,
.aio_write = aio_write_zero,
.write_iter = write_iter_zero,
.mmap = mmap_zero,
#ifndef CONFIG_MMU
.mmap_capabilities = zero_mmap_capabilities,
@ -776,7 +775,6 @@ static const struct file_operations zero_fops = {
static const struct file_operations full_fops = {
.llseek = full_lseek,
.read = new_sync_read,
.read_iter = read_iter_zero,
.write = write_full,
};

2
drivers/char/raw.c
View File

@ -282,9 +282,7 @@ static long raw_ctl_compat_ioctl(struct file *file, unsigned int cmd,
#endif
static const struct file_operations raw_fops = {
.read = new_sync_read,
.read_iter = blkdev_read_iter,
.write = new_sync_write,
.write_iter = blkdev_write_iter,
.fsync = blkdev_fsync,
.open = raw_open,

18
drivers/infiniband/hw/ipath/ipath_file_ops.c
View File

@ -42,6 +42,7 @@
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/cpu.h>
#include <linux/uio.h>
#include <asm/pgtable.h>
#include "ipath_kernel.h"
@ -52,15 +53,19 @@ static int ipath_open(struct inode *, struct file *);
static int ipath_close(struct inode *, struct file *);
static ssize_t ipath_write(struct file *, const char __user *, size_t,
loff_t *);
static ssize_t ipath_writev(struct kiocb *, const struct iovec *,
unsigned long , loff_t);
static ssize_t ipath_write_iter(struct kiocb *, struct iov_iter *from);
static unsigned int ipath_poll(struct file *, struct poll_table_struct *);
static int ipath_mmap(struct file *, struct vm_area_struct *);
/*
* This is really, really weird shit - write() and writev() here
* have completely unrelated semantics. Sucky userland ABI,
* film at 11.
*/
static const struct file_operations ipath_file_ops = {
.owner = THIS_MODULE,
.write = ipath_write,
.aio_write = ipath_writev,
.write_iter = ipath_write_iter,
.open = ipath_open,
.release = ipath_close,
.poll = ipath_poll,
@ -2413,18 +2418,17 @@ bail:
return ret;
}
static ssize_t ipath_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long dim, loff_t off)
static ssize_t ipath_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *filp = iocb->ki_filp;
struct ipath_filedata *fp = filp->private_data;
struct ipath_portdata *pd = port_fp(filp);
struct ipath_user_sdma_queue *pq = fp->pq;
if (!dim)
if (!iter_is_iovec(from) || !from->nr_segs)
return -EINVAL;
return ipath_user_sdma_writev(pd->port_dd, pq, iov, dim);
return ipath_user_sdma_writev(pd->port_dd, pq, from->iov, from->nr_segs);
}
static struct class *ipath_class;

20
drivers/infiniband/hw/qib/qib_file_ops.c
View File

@ -43,6 +43,7 @@
#include <asm/pgtable.h>
#include <linux/delay.h>
#include <linux/export.h>
#include <linux/uio.h>
#include "qib.h"
#include "qib_common.h"
@ -54,15 +55,19 @@
static int qib_open(struct inode *, struct file *);
static int qib_close(struct inode *, struct file *);
static ssize_t qib_write(struct file *, const char __user *, size_t, loff_t *);
static ssize_t qib_aio_write(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
static ssize_t qib_write_iter(struct kiocb *, struct iov_iter *);
static unsigned int qib_poll(struct file *, struct poll_table_struct *);
static int qib_mmapf(struct file *, struct vm_area_struct *);
/*
* This is really, really weird shit - write() and writev() here
* have completely unrelated semantics. Sucky userland ABI,
* film at 11.
*/
static const struct file_operations qib_file_ops = {
.owner = THIS_MODULE,
.write = qib_write,
.aio_write = qib_aio_write,
.write_iter = qib_write_iter,
.open = qib_open,
.release = qib_close,
.poll = qib_poll,
@ -2248,17 +2253,16 @@ bail:
return ret;
}
static ssize_t qib_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long dim, loff_t off)
static ssize_t qib_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct qib_filedata *fp = iocb->ki_filp->private_data;
struct qib_ctxtdata *rcd = ctxt_fp(iocb->ki_filp);
struct qib_user_sdma_queue *pq = fp->pq;
if (!dim || !pq)
if (!iter_is_iovec(from) || !from->nr_segs || !pq)
return -EINVAL;
return qib_user_sdma_writev(rcd, pq, iov, dim);
return qib_user_sdma_writev(rcd, pq, from->iov, from->nr_segs);
}
static struct class *qib_class;

2
drivers/net/macvtap.c
View File

@ -1118,8 +1118,6 @@ static const struct file_operations macvtap_fops = {
.owner = THIS_MODULE,
.open = macvtap_open,
.release = macvtap_release,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = macvtap_read_iter,
.write_iter = macvtap_write_iter,
.poll = macvtap_poll,

2
drivers/net/tun.c
View File

@ -2223,8 +2223,6 @@ static void tun_chr_show_fdinfo(struct seq_file *m, struct file *f)
static const struct file_operations tun_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = tun_chr_read_iter,
.write_iter = tun_chr_write_iter,
.poll = tun_chr_poll,

2
drivers/staging/android/ashmem.c
View File

@ -310,7 +310,7 @@ static ssize_t ashmem_read(struct file *file, char __user *buf,
* be destroyed until all references to the file are dropped and
* ashmem_release is called.
*/
ret = asma->file->f_op->read(asma->file, buf, len, pos);
ret = __vfs_read(asma->file, buf, len, pos);
if (ret >= 0) {
/** Update backing file pos, since f_ops->read() doesn't */
asma->file->f_pos = *pos;

18
drivers/staging/comedi/drivers/serial2002.c
View File

@ -108,24 +108,16 @@ static int serial2002_tty_write(struct file *f, unsigned char *buf, int count)
{
const char __user *p = (__force const char __user *)buf;
int result;
loff_t offset = 0;
mm_segment_t oldfs;
oldfs = get_fs();
set_fs(KERNEL_DS);
f->f_pos = 0;
result = f->f_op->write(f, p, count, &f->f_pos);
result = __vfs_write(f, p, count, &offset);
set_fs(oldfs);
return result;
}
static int serial2002_tty_readb(struct file *f, unsigned char *buf)
{
char __user *p = (__force char __user *)buf;
f->f_pos = 0;
return f->f_op->read(f, p, 1, &f->f_pos);
}
static void serial2002_tty_read_poll_wait(struct file *f, int timeout)
{
struct poll_wqueues table;
@ -161,13 +153,15 @@ static int serial2002_tty_read(struct file *f, int timeout)
result = -1;
if (!IS_ERR(f)) {
mm_segment_t oldfs;
char __user *p = (__force char __user *)&ch;
loff_t offset = 0;
oldfs = get_fs();
set_fs(KERNEL_DS);
if (f->f_op->poll) {
serial2002_tty_read_poll_wait(f, timeout);
if (serial2002_tty_readb(f, &ch) == 1)
if (__vfs_read(f, p, 1, &offset) == 1)
result = ch;
} else {
/* Device does not support poll, busy wait */
@ -178,7 +172,7 @@ static int serial2002_tty_read(struct file *f, int timeout)
if (retries >= timeout)
break;
if (serial2002_tty_readb(f, &ch) == 1) {
if (__vfs_read(f, p, 1, &offset) == 1) {
result = ch;
break;
}

6
drivers/staging/lustre/lustre/llite/file.c
View File

@ -3135,9 +3135,7 @@ int ll_inode_permission(struct inode *inode, int mask)
/* -o localflock - only provides locally consistent flock locks */
struct file_operations ll_file_operations = {
.read = new_sync_read,
.read_iter = ll_file_read_iter,
.write = new_sync_write,
.write_iter = ll_file_write_iter,
.unlocked_ioctl = ll_file_ioctl,
.open = ll_file_open,
@ -3150,9 +3148,7 @@ struct file_operations ll_file_operations = {
};
struct file_operations ll_file_operations_flock = {
.read = new_sync_read,
.read_iter = ll_file_read_iter,
.write = new_sync_write,
.write_iter = ll_file_write_iter,
.unlocked_ioctl = ll_file_ioctl,
.open = ll_file_open,
@ -3168,9 +3164,7 @@ struct file_operations ll_file_operations_flock = {
/* These are for -o noflock - to return ENOSYS on flock calls */
struct file_operations ll_file_operations_noflock = {
.read = new_sync_read,
.read_iter = ll_file_read_iter,
.write = new_sync_write,
.write_iter = ll_file_write_iter,
.unlocked_ioctl = ll_file_ioctl,
.open = ll_file_open,

2
drivers/staging/lustre/lustre/llite/llite_internal.h
View File

@ -938,10 +938,8 @@ struct ll_cl_context {
};
struct vvp_thread_info {
struct iovec vti_local_iov;
struct vvp_io_args vti_args;
struct ra_io_arg vti_ria;
struct kiocb vti_kiocb;
struct ll_cl_context vti_io_ctx;
};

2
drivers/usb/gadget/function/f_fs.c
View File

@ -1061,8 +1061,6 @@ static const struct file_operations ffs_epfile_operations = {
.llseek = no_llseek,
.open = ffs_epfile_open,
.write = new_sync_write,
.read = new_sync_read,
.write_iter = ffs_epfile_write_iter,
.read_iter = ffs_epfile_read_iter,
.release = ffs_epfile_release,

2
drivers/usb/gadget/legacy/inode.c
View File

@ -699,8 +699,6 @@ static const struct file_operations ep_io_operations = {
.open = ep_open,
.release = ep_release,
.llseek = no_llseek,
.read = new_sync_read,
.write = new_sync_write,
.unlocked_ioctl = ep_ioctl,
.read_iter = ep_read_iter,
.write_iter = ep_write_iter,

4
fs/9p/v9fs_vfs.h
View File

@ -68,14 +68,10 @@ int v9fs_file_open(struct inode *inode, struct file *file);
void v9fs_inode2stat(struct inode *inode, struct p9_wstat *stat);
int v9fs_uflags2omode(int uflags, int extended);
ssize_t v9fs_file_readn(struct file *, char *, char __user *, u32, u64);
ssize_t v9fs_fid_readn(struct p9_fid *, char *, char __user *, u32, u64);
void v9fs_blank_wstat(struct p9_wstat *wstat);
int v9fs_vfs_setattr_dotl(struct dentry *, struct iattr *);
int v9fs_file_fsync_dotl(struct file *filp, loff_t start, loff_t end,
int datasync);
ssize_t v9fs_file_write_internal(struct inode *, struct p9_fid *,
const char __user *, size_t, loff_t *, int);
int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode);
int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode);
static inline void v9fs_invalidate_inode_attr(struct inode *inode)

80
fs/9p/vfs_addr.c
View File

@ -51,12 +51,11 @@
*/
static int v9fs_fid_readpage(struct p9_fid *fid, struct page *page)
{
int retval;
loff_t offset;
char *buffer;
struct inode *inode;
struct inode *inode = page->mapping->host;
struct bio_vec bvec = {.bv_page = page, .bv_len = PAGE_SIZE};
struct iov_iter to;
int retval, err;
inode = page->mapping->host;
p9_debug(P9_DEBUG_VFS, "\n");
BUG_ON(!PageLocked(page));
@ -65,16 +64,16 @@ static int v9fs_fid_readpage(struct p9_fid *fid, struct page *page)
if (retval == 0)
return retval;
buffer = kmap(page);
offset = page_offset(page);
iov_iter_bvec(&to, ITER_BVEC | READ, &bvec, 1, PAGE_SIZE);
retval = v9fs_fid_readn(fid, buffer, NULL, PAGE_CACHE_SIZE, offset);
if (retval < 0) {
retval = p9_client_read(fid, page_offset(page), &to, &err);
if (err) {
v9fs_uncache_page(inode, page);
retval = err;
goto done;
}
memset(buffer + retval, 0, PAGE_CACHE_SIZE - retval);
zero_user(page, retval, PAGE_SIZE - retval);
flush_dcache_page(page);
SetPageUptodate(page);
@ -82,7 +81,6 @@ static int v9fs_fid_readpage(struct p9_fid *fid, struct page *page)
retval = 0;
done:
kunmap(page);
unlock_page(page);
return retval;
}
@ -161,41 +159,32 @@ static void v9fs_invalidate_page(struct page *page, unsigned int offset,
static int v9fs_vfs_writepage_locked(struct page *page)
{
char *buffer;
int retval, len;
loff_t offset, size;
mm_segment_t old_fs;
struct v9fs_inode *v9inode;
struct inode *inode = page->mapping->host;
struct v9fs_inode *v9inode = V9FS_I(inode);
loff_t size = i_size_read(inode);
struct iov_iter from;
struct bio_vec bvec;
int err, len;
v9inode = V9FS_I(inode);
size = i_size_read(inode);
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
else
len = PAGE_CACHE_SIZE;
set_page_writeback(page);
bvec.bv_page = page;
bvec.bv_offset = 0;
bvec.bv_len = len;
iov_iter_bvec(&from, ITER_BVEC | WRITE, &bvec, 1, len);
buffer = kmap(page);
offset = page_offset(page);
old_fs = get_fs();
set_fs(get_ds());
/* We should have writeback_fid always set */
BUG_ON(!v9inode->writeback_fid);
retval = v9fs_file_write_internal(inode,
v9inode->writeback_fid,
(__force const char __user *)buffer,
len, &offset, 0);
if (retval > 0)
retval = 0;
set_page_writeback(page);
p9_client_write(v9inode->writeback_fid, page_offset(page), &from, &err);
set_fs(old_fs);
kunmap(page);
end_page_writeback(page);
return retval;
return err;
}
static int v9fs_vfs_writepage(struct page *page, struct writeback_control *wbc)
@ -261,16 +250,21 @@ static int v9fs_launder_page(struct page *page)
static ssize_t
v9fs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
{
/*
* FIXME
* Now that we do caching with cache mode enabled, We need
* to support direct IO
*/
p9_debug(P9_DEBUG_VFS, "v9fs_direct_IO: v9fs_direct_IO (%pD) off/no(%lld/%lu) EINVAL\n",
iocb->ki_filp,
(long long)pos, iter->nr_segs);
return -EINVAL;
struct file *file = iocb->ki_filp;
ssize_t n;
int err = 0;
if (rw & WRITE) {
n = p9_client_write(file->private_data, pos, iter, &err);
if (n) {
struct inode *inode = file_inode(file);
loff_t i_size = i_size_read(inode);
if (pos + n > i_size)
inode_add_bytes(inode, pos + n - i_size);
}
} else {
n = p9_client_read(file->private_data, pos, iter, &err);
}
return n ? n : err;
}
static int v9fs_write_begin(struct file *filp, struct address_space *mapping,

15
fs/9p/vfs_dir.c
View File

@ -33,6 +33,7 @@
#include <linux/inet.h>
#include <linux/idr.h>
#include <linux/slab.h>
#include <linux/uio.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@ -115,6 +116,7 @@ static int v9fs_dir_readdir(struct file *file, struct dir_context *ctx)
int buflen;
int reclen = 0;
struct p9_rdir *rdir;
struct kvec kvec;
p9_debug(P9_DEBUG_VFS, "name %pD\n", file);
fid = file->private_data;
@ -124,16 +126,21 @@ static int v9fs_dir_readdir(struct file *file, struct dir_context *ctx)
rdir = v9fs_alloc_rdir_buf(file, buflen);
if (!rdir)
return -ENOMEM;
kvec.iov_base = rdir->buf;
kvec.iov_len = buflen;
while (1) {
if (rdir->tail == rdir->head) {
err = v9fs_file_readn(file, rdir->buf, NULL,
buflen, ctx->pos);
if (err <= 0)
struct iov_iter to;
int n;
iov_iter_kvec(&to, READ | ITER_KVEC, &kvec, 1, buflen);
n = p9_client_read(file->private_data, ctx->pos, &to,
&err);
if (err)
return err;
rdir->head = 0;
rdir->tail = err;
rdir->tail = n;
}
while (rdir->head < rdir->tail) {
p9stat_init(&st);

314
fs/9p/vfs_file.c
View File

@ -36,6 +36,8 @@
#include <linux/utsname.h>
#include <asm/uaccess.h>
#include <linux/idr.h>
#include <linux/uio.h>
#include <linux/slab.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@ -285,6 +287,7 @@ static int v9fs_file_getlock(struct file *filp, struct file_lock *fl)
fl->fl_end = glock.start + glock.length - 1;
fl->fl_pid = glock.proc_id;
}
kfree(glock.client_id);
return res;
}
@ -363,63 +366,6 @@ out_err:
return ret;
}
/**
* v9fs_fid_readn - read from a fid
* @fid: fid to read
* @data: data buffer to read data into
* @udata: user data buffer to read data into
* @count: size of buffer
* @offset: offset at which to read data
*
*/
ssize_t
v9fs_fid_readn(struct p9_fid *fid, char *data, char __user *udata, u32 count,
u64 offset)
{
int n, total, size;
p9_debug(P9_DEBUG_VFS, "fid %d offset %llu count %d\n",
fid->fid, (long long unsigned)offset, count);
n = 0;
total = 0;
size = fid->iounit ? fid->iounit : fid->clnt->msize - P9_IOHDRSZ;
do {
n = p9_client_read(fid, data, udata, offset, count);
if (n <= 0)
break;
if (data)
data += n;
if (udata)
udata += n;
offset += n;
count -= n;
total += n;
} while (count > 0 && n == size);
if (n < 0)
total = n;
return total;
}
/**
* v9fs_file_readn - read from a file
* @filp: file pointer to read
* @data: data buffer to read data into
* @udata: user data buffer to read data into
* @count: size of buffer
* @offset: offset at which to read data
*
*/
ssize_t
v9fs_file_readn(struct file *filp, char *data, char __user *udata, u32 count,
u64 offset)
{
return v9fs_fid_readn(filp->private_data, data, udata, count, offset);
}
/**
* v9fs_file_read - read from a file
* @filp: file pointer to read
@ -430,69 +376,22 @@ v9fs_file_readn(struct file *filp, char *data, char __user *udata, u32 count,
*/
static ssize_t
v9fs_file_read(struct file *filp, char __user *udata, size_t count,
loff_t * offset)
v9fs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
int ret;
struct p9_fid *fid;
size_t size;
struct p9_fid *fid = iocb->ki_filp->private_data;
int ret, err;
p9_debug(P9_DEBUG_VFS, "count %zu offset %lld\n", count, *offset);
fid = filp->private_data;
p9_debug(P9_DEBUG_VFS, "count %zu offset %lld\n",
iov_iter_count(to), iocb->ki_pos);
size = fid->iounit ? fid->iounit : fid->clnt->msize - P9_IOHDRSZ;
if (count > size)
ret = v9fs_file_readn(filp, NULL, udata, count, *offset);
else
ret = p9_client_read(fid, NULL, udata, *offset, count);
if (ret > 0)
*offset += ret;
ret = p9_client_read(fid, iocb->ki_pos, to, &err);
if (!ret)
return err;
iocb->ki_pos += ret;
return ret;
}
ssize_t
v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid,
const char __user *data, size_t count,
loff_t *offset, int invalidate)
{
int n;
loff_t i_size;
size_t total = 0;
loff_t origin = *offset;
unsigned long pg_start, pg_end;
p9_debug(P9_DEBUG_VFS, "data %p count %d offset %x\n",
data, (int)count, (int)*offset);
do {
n = p9_client_write(fid, NULL, data+total, origin+total, count);
if (n <= 0)
break;
count -= n;
total += n;
} while (count > 0);
if (invalidate && (total > 0)) {
pg_start = origin >> PAGE_CACHE_SHIFT;
pg_end = (origin + total - 1) >> PAGE_CACHE_SHIFT;
if (inode->i_mapping && inode->i_mapping->nrpages)
invalidate_inode_pages2_range(inode->i_mapping,
pg_start, pg_end);
*offset += total;
i_size = i_size_read(inode);
if (*offset > i_size) {
inode_add_bytes(inode, *offset - i_size);
i_size_write(inode, *offset);
}
}
if (n < 0)
return n;
return total;
}
/**
* v9fs_file_write - write to a file
* @filp: file pointer to write
@ -502,35 +401,45 @@ v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid,
*
*/
static ssize_t
v9fs_file_write(struct file *filp, const char __user * data,
size_t count, loff_t *offset)
v9fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
ssize_t retval = 0;
loff_t origin = *offset;
loff_t origin = iocb->ki_pos;
size_t count = iov_iter_count(from);
int err = 0;
retval = generic_write_checks(filp, &origin, &count, 0);
retval = generic_write_checks(file, &origin, &count, 0);
if (retval)
goto out;
return retval;
iov_iter_truncate(from, count);
retval = -EINVAL;
if ((ssize_t) count < 0)
goto out;
retval = 0;
if (!count)
goto out;
return 0;
retval = v9fs_file_write_internal(file_inode(filp),
filp->private_data,
data, count, &origin, 1);
/* update offset on successful write */
if (retval > 0)
*offset = origin;
out:
return retval;
retval = p9_client_write(file->private_data, origin, from, &err);
if (retval > 0) {
struct inode *inode = file_inode(file);
loff_t i_size;
unsigned long pg_start, pg_end;
pg_start = origin >> PAGE_CACHE_SHIFT;
pg_end = (origin + retval - 1) >> PAGE_CACHE_SHIFT;
if (inode->i_mapping && inode->i_mapping->nrpages)
invalidate_inode_pages2_range(inode->i_mapping,
pg_start, pg_end);
origin += retval;
i_size = i_size_read(inode);
iocb->ki_pos = origin;
if (origin > i_size) {
inode_add_bytes(inode, origin - i_size);
i_size_write(inode, origin);
}
return retval;
}
return err;
}
static int v9fs_file_fsync(struct file *filp, loff_t start, loff_t end,
int datasync)
{
@ -657,44 +566,6 @@ out_unlock:
return VM_FAULT_NOPAGE;
}
static ssize_t
v9fs_direct_read(struct file *filp, char __user *udata, size_t count,
loff_t *offsetp)
{
loff_t size, offset;
struct inode *inode;
struct address_space *mapping;
offset = *offsetp;
mapping = filp->f_mapping;
inode = mapping->host;
if (!count)
return 0;
size = i_size_read(inode);
if (offset < size)
filemap_write_and_wait_range(mapping, offset,
offset + count - 1);
return v9fs_file_read(filp, udata, count, offsetp);
}
/**
* v9fs_cached_file_read - read from a file
* @filp: file pointer to read
* @data: user data buffer to read data into
* @count: size of buffer
* @offset: offset at which to read data
*
*/
static ssize_t
v9fs_cached_file_read(struct file *filp, char __user *data, size_t count,
loff_t *offset)
{
if (filp->f_flags & O_DIRECT)
return v9fs_direct_read(filp, data, count, offset);
return new_sync_read(filp, data, count, offset);
}
/**
* v9fs_mmap_file_read - read from a file
* @filp: file pointer to read
@ -704,84 +575,12 @@ v9fs_cached_file_read(struct file *filp, char __user *data, size_t count,
*
*/
static ssize_t
v9fs_mmap_file_read(struct file *filp, char __user *data, size_t count,
loff_t *offset)
v9fs_mmap_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
/* TODO: Check if there are dirty pages */
return v9fs_file_read(filp, data, count, offset);
return v9fs_file_read_iter(iocb, to);
}
static ssize_t
v9fs_direct_write(struct file *filp, const char __user * data,
size_t count, loff_t *offsetp)
{
loff_t offset;
ssize_t retval;
struct inode *inode;
struct address_space *mapping;
offset = *offsetp;
mapping = filp->f_mapping;
inode = mapping->host;
if (!count)
return 0;
mutex_lock(&inode->i_mutex);
retval = filemap_write_and_wait_range(mapping, offset,
offset + count - 1);
if (retval)
goto err_out;
/*
* After a write we want buffered reads to be sure to go to disk to get
* the new data. We invalidate clean cached page from the region we're
* about to write. We do this *before* the write so that if we fail
* here we fall back to buffered write
*/
if (mapping->nrpages) {
pgoff_t pg_start = offset >> PAGE_CACHE_SHIFT;
pgoff_t pg_end = (offset + count - 1) >> PAGE_CACHE_SHIFT;
retval = invalidate_inode_pages2_range(mapping,
pg_start, pg_end);
/*
* If a page can not be invalidated, fall back
* to buffered write.
*/
if (retval) {
if (retval == -EBUSY)
goto buff_write;
goto err_out;
}
}
retval = v9fs_file_write(filp, data, count, offsetp);
err_out:
mutex_unlock(&inode->i_mutex);
return retval;
buff_write:
mutex_unlock(&inode->i_mutex);
return new_sync_write(filp, data, count, offsetp);
}
/**
* v9fs_cached_file_write - write to a file
* @filp: file pointer to write
* @data: data buffer to write data from
* @count: size of buffer
* @offset: offset at which to write data
*
*/
static ssize_t
v9fs_cached_file_write(struct file *filp, const char __user * data,
size_t count, loff_t *offset)
{
if (filp->f_flags & O_DIRECT)
return v9fs_direct_write(filp, data, count, offset);
return new_sync_write(filp, data, count, offset);
}
/**
* v9fs_mmap_file_write - write to a file
* @filp: file pointer to write
@ -791,14 +590,13 @@ v9fs_cached_file_write(struct file *filp, const char __user * data,
*
*/
static ssize_t
v9fs_mmap_file_write(struct file *filp, const char __user *data,
size_t count, loff_t *offset)
v9fs_mmap_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
/*
* TODO: invalidate mmaps on filp's inode between
* offset and offset+count
*/
return v9fs_file_write(filp, data, count, offset);
return v9fs_file_write_iter(iocb, from);
}
static void v9fs_mmap_vm_close(struct vm_area_struct *vma)
@ -843,8 +641,6 @@ static const struct vm_operations_struct v9fs_mmap_file_vm_ops = {
const struct file_operations v9fs_cached_file_operations = {
.llseek = generic_file_llseek,
.read = v9fs_cached_file_read,
.write = v9fs_cached_file_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.open = v9fs_file_open,
@ -856,8 +652,6 @@ const struct file_operations v9fs_cached_file_operations = {
const struct file_operations v9fs_cached_file_operations_dotl = {
.llseek = generic_file_llseek,
.read = v9fs_cached_file_read,
.write = v9fs_cached_file_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.open = v9fs_file_open,
@ -870,8 +664,8 @@ const struct file_operations v9fs_cached_file_operations_dotl = {
const struct file_operations v9fs_file_operations = {
.llseek = generic_file_llseek,
.read = v9fs_file_read,
.write = v9fs_file_write,
.read_iter = v9fs_file_read_iter,
.write_iter = v9fs_file_write_iter,
.open = v9fs_file_open,
.release = v9fs_dir_release,
.lock = v9fs_file_lock,
@ -881,8 +675,8 @@ const struct file_operations v9fs_file_operations = {
const struct file_operations v9fs_file_operations_dotl = {
.llseek = generic_file_llseek,
.read = v9fs_file_read,
.write = v9fs_file_write,
.read_iter = v9fs_file_read_iter,
.write_iter = v9fs_file_write_iter,
.open = v9fs_file_open,
.release = v9fs_dir_release,
.lock = v9fs_file_lock_dotl,
@ -893,8 +687,8 @@ const struct file_operations v9fs_file_operations_dotl = {
const struct file_operations v9fs_mmap_file_operations = {
.llseek = generic_file_llseek,
.read = v9fs_mmap_file_read,
.write = v9fs_mmap_file_write,
.read_iter = v9fs_mmap_file_read_iter,
.write_iter = v9fs_mmap_file_write_iter,
.open = v9fs_file_open,
.release = v9fs_dir_release,
.lock = v9fs_file_lock,
@ -904,8 +698,8 @@ const struct file_operations v9fs_mmap_file_operations = {
const struct file_operations v9fs_mmap_file_operations_dotl = {
.llseek = generic_file_llseek,
.read = v9fs_mmap_file_read,
.write = v9fs_mmap_file_write,
.read_iter = v9fs_mmap_file_read_iter,
.write_iter = v9fs_mmap_file_write_iter,
.open = v9fs_file_open,
.release = v9fs_dir_release,
.lock = v9fs_file_lock_dotl,

80
fs/9p/xattr.c
View File

@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/uio.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@ -25,50 +26,34 @@ ssize_t v9fs_fid_xattr_get(struct p9_fid *fid, const char *name,
void *buffer, size_t buffer_size)
{
ssize_t retval;
int msize, read_count;
u64 offset = 0, attr_size;
u64 attr_size;
struct p9_fid *attr_fid;
struct kvec kvec = {.iov_base = buffer, .iov_len = buffer_size};
struct iov_iter to;
int err;
iov_iter_kvec(&to, READ | ITER_KVEC, &kvec, 1, buffer_size);
attr_fid = p9_client_xattrwalk(fid, name, &attr_size);
if (IS_ERR(attr_fid)) {
retval = PTR_ERR(attr_fid);
p9_debug(P9_DEBUG_VFS, "p9_client_attrwalk failed %zd\n",
retval);
attr_fid = NULL;
goto error;
}
if (!buffer_size) {
/* request to get the attr_size */
retval = attr_size;
goto error;
return retval;
}
if (attr_size > buffer_size) {
retval = -ERANGE;
goto error;
}
msize = attr_fid->clnt->msize;
while (attr_size) {
if (attr_size > (msize - P9_IOHDRSZ))
read_count = msize - P9_IOHDRSZ;
if (!buffer_size) /* request to get the attr_size */
retval = attr_size;
else
read_count = attr_size;
read_count = p9_client_read(attr_fid, ((char *)buffer)+offset,
NULL, offset, read_count);
if (read_count < 0) {
/* error in xattr read */
retval = read_count;
goto error;
}
offset += read_count;
attr_size -= read_count;
retval = -ERANGE;
} else {
iov_iter_truncate(&to, attr_size);
retval = p9_client_read(attr_fid, 0, &to, &err);
if (err)
retval = err;
}
/* Total read xattr bytes */
retval = offset;
error:
if (attr_fid)
p9_client_clunk(attr_fid);
p9_client_clunk(attr_fid);
return retval;
}
@ -120,8 +105,11 @@ int v9fs_xattr_set(struct dentry *dentry, const char *name,
int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name,
const void *value, size_t value_len, int flags)
{
u64 offset = 0;
int retval, msize, write_count;
struct kvec kvec = {.iov_base = (void *)value, .iov_len = value_len};
struct iov_iter from;
int retval;
iov_iter_kvec(&from, WRITE | ITER_KVEC, &kvec, 1, value_len);
p9_debug(P9_DEBUG_VFS, "name = %s value_len = %zu flags = %d\n",
name, value_len, flags);
@ -135,29 +123,11 @@ int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name,
* On success fid points to xattr
*/
retval = p9_client_xattrcreate(fid, name, value_len, flags);
if (retval < 0) {
if (retval < 0)
p9_debug(P9_DEBUG_VFS, "p9_client_xattrcreate failed %d\n",
retval);
goto err;
}
msize = fid->clnt->msize;
while (value_len) {
if (value_len > (msize - P9_IOHDRSZ))
write_count = msize - P9_IOHDRSZ;
else
write_count = value_len;
write_count = p9_client_write(fid, ((char *)value)+offset,
NULL, offset, write_count);
if (write_count < 0) {
/* error in xattr write */
retval = write_count;
goto err;
}
offset += write_count;
value_len -= write_count;
}
retval = 0;
err:
else
p9_client_write(fid, 0, &from, &retval);
p9_client_clunk(fid);
return retval;
}

2
fs/adfs/file.c
View File

@ -23,11 +23,9 @@
const struct file_operations adfs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.mmap = generic_file_mmap,
.fsync = generic_file_fsync,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.splice_read = generic_file_splice_read,
};

2
fs/affs/file.c
View File

@ -969,9 +969,7 @@ int affs_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
}
const struct file_operations affs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.open = affs_file_open,

2
fs/afs/file.c
View File

@ -31,8 +31,6 @@ const struct file_operations afs_file_operations = {
.open = afs_open,
.release = afs_release,
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = afs_file_write,
.mmap = generic_file_readonly_mmap,

23
fs/aio.c
View File

@ -692,8 +692,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events)
nr_events *= 2;
/* Prevent overflows */
if ((nr_events > (0x10000000U / sizeof(struct io_event))) ||
(nr_events > (0x10000000U / sizeof(struct kiocb)))) {
if (nr_events > (0x10000000U / sizeof(struct io_event))) {
pr_debug("ENOMEM: nr_events too high\n");
return ERR_PTR(-EINVAL);
}
@ -1356,8 +1355,6 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
return -EINVAL;
}
typedef ssize_t (aio_rw_op)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
typedef ssize_t (rw_iter_op)(struct kiocb *, struct iov_iter *);
static int aio_setup_vectored_rw(int rw, char __user *buf, size_t len,
@ -1386,7 +1383,6 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
ssize_t ret;
int rw;
fmode_t mode;
aio_rw_op *rw_op;
rw_iter_op *iter_op;
struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs;
struct iov_iter iter;
@ -1396,7 +1392,6 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
case IOCB_CMD_PREADV:
mode = FMODE_READ;
rw = READ;
rw_op = file->f_op->aio_read;
iter_op = file->f_op->read_iter;
goto rw_common;
@ -1404,14 +1399,13 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
case IOCB_CMD_PWRITEV:
mode = FMODE_WRITE;
rw = WRITE;
rw_op = file->f_op->aio_write;
iter_op = file->f_op->write_iter;
goto rw_common;
rw_common:
if (unlikely(!(file->f_mode & mode)))
return -EBADF;
if (!rw_op && !iter_op)
if (!iter_op)
return -EINVAL;
if (opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV)
@ -1431,21 +1425,10 @@ rw_common:
len = ret;
/* XXX: move/kill - rw_verify_area()? */
/* This matches the pread()/pwrite() logic */
if (req->ki_pos < 0) {
ret = -EINVAL;
break;
}
if (rw == WRITE)
file_start_write(file);
if (iter_op) {
ret = iter_op(req, &iter);
} else {
ret = rw_op(req, iter.iov, iter.nr_segs, req->ki_pos);
}
ret = iter_op(req, &iter);
if (rw == WRITE)
file_end_write(file);

2
fs/autofs4/autofs_i.h
View File

@ -213,7 +213,7 @@ void autofs4_clean_ino(struct autofs_info *);
static inline int autofs_prepare_pipe(struct file *pipe)
{
if (!pipe->f_op->write)
if (!(pipe->f_mode & FMODE_CAN_WRITE))
return -EINVAL;
if (!S_ISFIFO(file_inode(pipe)->i_mode))
return -EINVAL;

2
fs/autofs4/waitq.c
View File

@ -70,7 +70,7 @@ static int autofs4_write(struct autofs_sb_info *sbi,
mutex_lock(&sbi->pipe_mutex);
while (bytes &&
(wr = file->f_op->write(file,data,bytes,&file->f_pos)) > 0) {
(wr = __vfs_write(file,data,bytes,&file->f_pos)) > 0) {
data += wr;
bytes -= wr;
}

2
fs/bfs/file.c
View File

@ -23,9 +23,7 @@
const struct file_operations bfs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.splice_read = generic_file_splice_read,

2
fs/block_dev.c
View File

@ -1659,8 +1659,6 @@ const struct file_operations def_blk_fops = {
.open = blkdev_open,
.release = blkdev_close,
.llseek = block_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = blkdev_read_iter,
.write_iter = blkdev_write_iter,
.mmap = generic_file_mmap,

2
fs/btrfs/file.c
View File

@ -2806,8 +2806,6 @@ out:
const struct file_operations btrfs_file_operations = {
.llseek = btrfs_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.splice_read = generic_file_splice_read,
.write_iter = btrfs_file_write_iter,

2
fs/ceph/file.c
View File

@ -1331,8 +1331,6 @@ const struct file_operations ceph_file_fops = {
.open = ceph_open,
.release = ceph_release,
.llseek = ceph_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = ceph_read_iter,
.write_iter = ceph_write_iter,
.mmap = ceph_mmap,

12
fs/cifs/cifsfs.c
View File

@ -906,8 +906,6 @@ const struct inode_operations cifs_symlink_inode_ops = {
};
const struct file_operations cifs_file_ops = {
.read = new_sync_read,
.write = new_sync_write,
.read_iter = cifs_loose_read_iter,
.write_iter = cifs_file_write_iter,
.open = cifs_open,
@ -926,8 +924,6 @@ const struct file_operations cifs_file_ops = {
};
const struct file_operations cifs_file_strict_ops = {
.read = new_sync_read,
.write = new_sync_write,
.read_iter = cifs_strict_readv,
.write_iter = cifs_strict_writev,
.open = cifs_open,
@ -947,8 +943,6 @@ const struct file_operations cifs_file_strict_ops = {
const struct file_operations cifs_file_direct_ops = {
/* BB reevaluate whether they can be done with directio, no cache */
.read = new_sync_read,
.write = new_sync_write,
.read_iter = cifs_user_readv,
.write_iter = cifs_user_writev,
.open = cifs_open,
@ -967,8 +961,6 @@ const struct file_operations cifs_file_direct_ops = {
};
const struct file_operations cifs_file_nobrl_ops = {
.read = new_sync_read,
.write = new_sync_write,
.read_iter = cifs_loose_read_iter,
.write_iter = cifs_file_write_iter,
.open = cifs_open,
@ -986,8 +978,6 @@ const struct file_operations cifs_file_nobrl_ops = {
};
const struct file_operations cifs_file_strict_nobrl_ops = {
.read = new_sync_read,
.write = new_sync_write,
.read_iter = cifs_strict_readv,
.write_iter = cifs_strict_writev,
.open = cifs_open,
@ -1006,8 +996,6 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
const struct file_operations cifs_file_direct_nobrl_ops = {
/* BB reevaluate whether they can be done with directio, no cache */
.read = new_sync_read,
.write = new_sync_write,
.read_iter = cifs_user_readv,
.write_iter = cifs_user_writev,
.open = cifs_open,

38
fs/coda/file.c
View File

@ -27,19 +27,14 @@
#include "coda_int.h"
static ssize_t
coda_file_read(struct file *coda_file, char __user *buf, size_t count, loff_t *ppos)
coda_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct coda_file_info *cfi;
struct file *host_file;
struct file *coda_file = iocb->ki_filp;
struct coda_file_info *cfi = CODA_FTOC(coda_file);
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
host_file = cfi->cfi_container;
if (!host_file->f_op->read)
return -EINVAL;
return host_file->f_op->read(host_file, buf, count, ppos);
return vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos);
}
static ssize_t
@ -64,32 +59,25 @@ coda_file_splice_read(struct file *coda_file, loff_t *ppos,
}
static ssize_t
coda_file_write(struct file *coda_file, const char __user *buf, size_t count, loff_t *ppos)
coda_file_write_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct inode *host_inode, *coda_inode = file_inode(coda_file);
struct coda_file_info *cfi;
struct file *coda_file = iocb->ki_filp;
struct inode *coda_inode = file_inode(coda_file);
struct coda_file_info *cfi = CODA_FTOC(coda_file);
struct file *host_file;
ssize_t ret;
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
host_file = cfi->cfi_container;
if (!host_file->f_op->write)
return -EINVAL;
host_inode = file_inode(host_file);
file_start_write(host_file);
mutex_lock(&coda_inode->i_mutex);
ret = host_file->f_op->write(host_file, buf, count, ppos);
coda_inode->i_size = host_inode->i_size;
ret = vfs_iter_write(cfi->cfi_container, to, &iocb->ki_pos);
coda_inode->i_size = file_inode(host_file)->i_size;
coda_inode->i_blocks = (coda_inode->i_size + 511) >> 9;
coda_inode->i_mtime = coda_inode->i_ctime = CURRENT_TIME_SEC;
mutex_unlock(&coda_inode->i_mutex);
file_end_write(host_file);
return ret;
}
@ -231,8 +219,8 @@ int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync)
const struct file_operations coda_file_operations = {
.llseek = generic_file_llseek,
.read = coda_file_read,
.write = coda_file_write,
.read_iter = coda_file_read_iter,
.write_iter = coda_file_write_iter,
.mmap = coda_file_mmap,
.open = coda_open,
.release = coda_release,

2
fs/coredump.c
View File

@ -657,7 +657,7 @@ void do_coredump(const siginfo_t *siginfo)
*/
if (!uid_eq(inode->i_uid, current_fsuid()))
goto close_fail;
if (!cprm.file->f_op->write)
if (!(cprm.file->f_mode & FMODE_CAN_WRITE))
goto close_fail;
if (do_truncate(cprm.file->f_path.dentry, 0, 0, cprm.file))
goto close_fail;

2
fs/ecryptfs/file.c
View File

@ -358,9 +358,7 @@ const struct file_operations ecryptfs_dir_fops = {
const struct file_operations ecryptfs_main_fops = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = ecryptfs_read_update_atime,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.iterate = ecryptfs_readdir,
.unlocked_ioctl = ecryptfs_unlocked_ioctl,

2
fs/exofs/file.c
View File

@ -67,8 +67,6 @@ static int exofs_flush(struct file *file, fl_owner_t id)
const struct file_operations exofs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,

4
fs/ext2/file.c
View File

@ -92,8 +92,6 @@ int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync)
*/
const struct file_operations ext2_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.unlocked_ioctl = ext2_ioctl,
@ -111,8 +109,6 @@ const struct file_operations ext2_file_operations = {
#ifdef CONFIG_FS_DAX
const struct file_operations ext2_dax_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.unlocked_ioctl = ext2_ioctl,

2
fs/ext3/file.c
View File

@ -50,8 +50,6 @@ static int ext3_release_file (struct inode * inode, struct file * filp)
const struct file_operations ext3_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.unlocked_ioctl = ext3_ioctl,

4
fs/ext4/file.c
View File

@ -607,8 +607,6 @@ loff_t ext4_llseek(struct file *file, loff_t offset, int whence)
const struct file_operations ext4_file_operations = {
.llseek = ext4_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = ext4_file_write_iter,
.unlocked_ioctl = ext4_ioctl,
@ -627,8 +625,6 @@ const struct file_operations ext4_file_operations = {
#ifdef CONFIG_FS_DAX
const struct file_operations ext4_dax_file_operations = {
.llseek = ext4_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = ext4_file_write_iter,
.unlocked_ioctl = ext4_ioctl,

2
fs/f2fs/file.c
View File

@ -1104,8 +1104,6 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
const struct file_operations f2fs_file_operations = {
.llseek = f2fs_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.open = generic_file_open,

2
fs/fat/file.c
View File

@ -170,8 +170,6 @@ int fat_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
const struct file_operations fat_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,

4
fs/file_table.c
View File

@ -168,10 +168,10 @@ struct file *alloc_file(struct path *path, fmode_t mode,
file->f_inode = path->dentry->d_inode;
file->f_mapping = path->dentry->d_inode->i_mapping;
if ((mode & FMODE_READ) &&
likely(fop->read || fop->aio_read || fop->read_iter))
likely(fop->read || fop->read_iter))
mode |= FMODE_CAN_READ;
if ((mode & FMODE_WRITE) &&
likely(fop->write || fop->aio_write || fop->write_iter))
likely(fop->write || fop->write_iter))
mode |= FMODE_CAN_WRITE;
file->f_mode = mode;
file->f_op = fop;

25
fs/fuse/cuse.c
View File

@ -88,32 +88,23 @@ static struct list_head *cuse_conntbl_head(dev_t devt)
* FUSE file.
*/
static ssize_t cuse_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
static ssize_t cuse_read_iter(struct kiocb *kiocb, struct iov_iter *to)
{
struct fuse_io_priv io = { .async = 0, .file = kiocb->ki_filp };
loff_t pos = 0;
struct iovec iov = { .iov_base = buf, .iov_len = count };
struct fuse_io_priv io = { .async = 0, .file = file };
struct iov_iter ii;
iov_iter_init(&ii, READ, &iov, 1, count);
return fuse_direct_io(&io, &ii, &pos, FUSE_DIO_CUSE);
return fuse_direct_io(&io, to, &pos, FUSE_DIO_CUSE);
}
static ssize_t cuse_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
static ssize_t cuse_write_iter(struct kiocb *kiocb, struct iov_iter *from)
{
struct fuse_io_priv io = { .async = 0, .file = kiocb->ki_filp };
loff_t pos = 0;
struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = count };
struct fuse_io_priv io = { .async = 0, .file = file };
struct iov_iter ii;
iov_iter_init(&ii, WRITE, &iov, 1, count);
/*
* No locking or generic_write_checks(), the server is
* responsible for locking and sanity checks.
*/
return fuse_direct_io(&io, &ii, &pos,
return fuse_direct_io(&io, from, &pos,
FUSE_DIO_WRITE | FUSE_DIO_CUSE);
}
@ -186,8 +177,8 @@ static long cuse_file_compat_ioctl(struct file *file, unsigned int cmd,
static const struct file_operations cuse_frontend_fops = {
.owner = THIS_MODULE,
.read = cuse_read,
.write = cuse_write,
.read_iter = cuse_read_iter,
.write_iter = cuse_write_iter,
.open = cuse_open,
.release = cuse_release,
.unlocked_ioctl = cuse_file_ioctl,

63
fs/fuse/dev.c
View File

@ -710,28 +710,26 @@ struct fuse_copy_state {
struct fuse_conn *fc;
int write;
struct fuse_req *req;
const struct iovec *iov;
struct iov_iter *iter;
struct pipe_buffer *pipebufs;
struct pipe_buffer *currbuf;
struct pipe_inode_info *pipe;
unsigned long nr_segs;
unsigned long seglen;
unsigned long addr;
struct page *pg;
unsigned len;
unsigned offset;
unsigned move_pages:1;
};
static void fuse_copy_init(struct fuse_copy_state *cs, struct fuse_conn *fc,
static void fuse_copy_init(struct fuse_copy_state *cs,
struct fuse_conn *fc,
int write,
const struct iovec *iov, unsigned long nr_segs)
struct iov_iter *iter)
{
memset(cs, 0, sizeof(*cs));
cs->fc = fc;
cs->write = write;
cs->iov = iov;
cs->nr_segs = nr_segs;
cs->iter = iter;
}
/* Unmap and put previous page of userspace buffer */
@ -799,22 +797,16 @@ static int fuse_copy_fill(struct fuse_copy_state *cs)
cs->nr_segs++;
}
} else {
if (!cs->seglen) {
BUG_ON(!cs->nr_segs);
cs->seglen = cs->iov[0].iov_len;
cs->addr = (unsigned long) cs->iov[0].iov_base;
cs->iov++;
cs->nr_segs--;
}
err = get_user_pages_fast(cs->addr, 1, cs->write, &page);
size_t off;
err = iov_iter_get_pages(cs->iter, &page, PAGE_SIZE, 1, &off);
if (err < 0)
return err;
BUG_ON(err != 1);
BUG_ON(!err);
cs->len = err;
cs->offset = off;
cs->pg = page;
cs->offset = cs->addr % PAGE_SIZE;
cs->len = min(PAGE_SIZE - cs->offset, cs->seglen);
cs->seglen -= cs->len;
cs->addr += cs->len;
cs->offset = off;
iov_iter_advance(cs->iter, err);
}
return lock_request(cs->fc, cs->req);
@ -1363,8 +1355,7 @@ static int fuse_dev_open(struct inode *inode, struct file *file)
return 0;
}
static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
static ssize_t fuse_dev_read(struct kiocb *iocb, struct iov_iter *to)
{
struct fuse_copy_state cs;
struct file *file = iocb->ki_filp;
@ -1372,9 +1363,12 @@ static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
if (!fc)
return -EPERM;
fuse_copy_init(&cs, fc, 1, iov, nr_segs);
if (!iter_is_iovec(to))
return -EINVAL;
return fuse_dev_do_read(fc, file, &cs, iov_length(iov, nr_segs));
fuse_copy_init(&cs, fc, 1, to);
return fuse_dev_do_read(fc, file, &cs, iov_iter_count(to));
}
static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
@ -1394,7 +1388,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
if (!bufs)
return -ENOMEM;
fuse_copy_init(&cs, fc, 1, NULL, 0);
fuse_copy_init(&cs, fc, 1, NULL);
cs.pipebufs = bufs;
cs.pipe = pipe;
ret = fuse_dev_do_read(fc, in, &cs, len);
@ -1970,17 +1964,19 @@ static ssize_t fuse_dev_do_write(struct fuse_conn *fc,
return err;
}
static ssize_t fuse_dev_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
static ssize_t fuse_dev_write(struct kiocb *iocb, struct iov_iter *from)
{
struct fuse_copy_state cs;
struct fuse_conn *fc = fuse_get_conn(iocb->ki_filp);
if (!fc)
return -EPERM;
fuse_copy_init(&cs, fc, 0, iov, nr_segs);
if (!iter_is_iovec(from))
return -EINVAL;
return fuse_dev_do_write(fc, &cs, iov_length(iov, nr_segs));
fuse_copy_init(&cs, fc, 0, from);
return fuse_dev_do_write(fc, &cs, iov_iter_count(from));
}
static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
@ -2043,8 +2039,9 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
}
pipe_unlock(pipe);
fuse_copy_init(&cs, fc, 0, NULL, nbuf);
fuse_copy_init(&cs, fc, 0, NULL);
cs.pipebufs = bufs;
cs.nr_segs = nbuf;
cs.pipe = pipe;
if (flags & SPLICE_F_MOVE)
@ -2232,11 +2229,9 @@ const struct file_operations fuse_dev_operations = {
.owner = THIS_MODULE,
.open = fuse_dev_open,
.llseek = no_llseek,
.read = do_sync_read,
.aio_read = fuse_dev_read,
.read_iter = fuse_dev_read,
.splice_read = fuse_dev_splice_read,
.write = do_sync_write,
.aio_write = fuse_dev_write,
.write_iter = fuse_dev_write,
.splice_write = fuse_dev_splice_write,
.poll = fuse_dev_poll,
.release = fuse_dev_release,

69
fs/fuse/file.c
View File

@ -1401,55 +1401,33 @@ static ssize_t __fuse_direct_read(struct fuse_io_priv *io,
return res;
}
static ssize_t fuse_direct_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
static ssize_t fuse_direct_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct fuse_io_priv io = { .async = 0, .file = file };
struct iovec iov = { .iov_base = buf, .iov_len = count };
struct iov_iter ii;
iov_iter_init(&ii, READ, &iov, 1, count);
return __fuse_direct_read(&io, &ii, ppos);
struct fuse_io_priv io = { .async = 0, .file = iocb->ki_filp };
return __fuse_direct_read(&io, to, &iocb->ki_pos);
}
static ssize_t __fuse_direct_write(struct fuse_io_priv *io,
struct iov_iter *iter,
loff_t *ppos)
static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = io->file;
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
size_t count = iov_iter_count(iter);
ssize_t res;
res = generic_write_checks(file, ppos, &count, 0);
if (!res) {
iov_iter_truncate(iter, count);
res = fuse_direct_io(io, iter, ppos, FUSE_DIO_WRITE);
}
fuse_invalidate_attr(inode);
return res;
}
static ssize_t fuse_direct_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = count };
struct inode *inode = file_inode(file);
ssize_t res;
struct fuse_io_priv io = { .async = 0, .file = file };
struct iov_iter ii;
iov_iter_init(&ii, WRITE, &iov, 1, count);
size_t count = iov_iter_count(from);
ssize_t res;
if (is_bad_inode(inode))
return -EIO;
/* Don't allow parallel writes to the same file */
mutex_lock(&inode->i_mutex);
res = __fuse_direct_write(&io, &ii, ppos);
res = generic_write_checks(file, &iocb->ki_pos, &count, 0);
if (!res) {
iov_iter_truncate(from, count);
res = fuse_direct_io(&io, from, &iocb->ki_pos, FUSE_DIO_WRITE);
}
fuse_invalidate_attr(inode);
if (res > 0)
fuse_write_update_size(inode, *ppos);
fuse_write_update_size(inode, iocb->ki_pos);
mutex_unlock(&inode->i_mutex);
return res;
@ -2862,10 +2840,17 @@ fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
if (io->async && is_sync_kiocb(iocb))
io->done = &wait;
if (rw == WRITE)
ret = __fuse_direct_write(io, iter, &pos);
else
if (rw == WRITE) {
ret = generic_write_checks(file, &pos, &count, 0);
if (!ret) {
iov_iter_truncate(iter, count);
ret = fuse_direct_io(io, iter, &pos, FUSE_DIO_WRITE);
}
fuse_invalidate_attr(inode);
} else {
ret = __fuse_direct_read(io, iter, &pos);
}
if (io->async) {
fuse_aio_complete(io, ret < 0 ? ret : 0, -1);
@ -2968,9 +2953,7 @@ out:
static const struct file_operations fuse_file_operations = {
.llseek = fuse_file_llseek,
.read = new_sync_read,
.read_iter = fuse_file_read_iter,
.write = new_sync_write,
.write_iter = fuse_file_write_iter,
.mmap = fuse_file_mmap,
.open = fuse_open,
@ -2988,8 +2971,8 @@ static const struct file_operations fuse_file_operations = {
static const struct file_operations fuse_direct_io_file_operations = {
.llseek = fuse_file_llseek,
.read = fuse_direct_read,
.write = fuse_direct_write,
.read_iter = fuse_direct_read_iter,
.write_iter = fuse_direct_write_iter,
.mmap = fuse_direct_mmap,
.open = fuse_open,
.flush = fuse_flush,

4
fs/gfs2/file.c
View File

@ -1105,9 +1105,7 @@ static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl)
const struct file_operations gfs2_file_fops = {
.llseek = gfs2_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = gfs2_file_write_iter,
.unlocked_ioctl = gfs2_ioctl,
.mmap = gfs2_mmap,
@ -1137,9 +1135,7 @@ const struct file_operations gfs2_dir_fops = {
const struct file_operations gfs2_file_fops_nolock = {
.llseek = gfs2_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = gfs2_file_write_iter,
.unlocked_ioctl = gfs2_ioctl,
.mmap = gfs2_mmap,

2
fs/hfs/inode.c
View File

@ -674,9 +674,7 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end,
static const struct file_operations hfs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.splice_read = generic_file_splice_read,

2
fs/hfsplus/inode.c
View File

@ -341,9 +341,7 @@ static const struct inode_operations hfsplus_file_inode_operations = {
static const struct file_operations hfsplus_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.splice_read = generic_file_splice_read,

2
fs/hostfs/hostfs_kern.c
View File

@ -378,11 +378,9 @@ static int hostfs_fsync(struct file *file, loff_t start, loff_t end,
static const struct file_operations hostfs_file_fops = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.splice_read = generic_file_splice_read,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.write = new_sync_write,
.mmap = generic_file_mmap,
.open = hostfs_file_open,
.release = hostfs_file_release,

2
fs/hpfs/file.c
View File

@ -197,9 +197,7 @@ const struct address_space_operations hpfs_aops = {
const struct file_operations hpfs_file_ops =
{
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.release = hpfs_file_release,

91
fs/hugetlbfs/inode.c
View File

@ -34,6 +34,7 @@
#include <linux/security.h>
#include <linux/magic.h>
#include <linux/migrate.h>
#include <linux/uio.h>
#include <asm/uaccess.h>
@ -179,42 +180,33 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
}
#endif
static int
static size_t
hugetlbfs_read_actor(struct page *page, unsigned long offset,
char __user *buf, unsigned long count,
unsigned long size)
struct iov_iter *to, unsigned long size)
{
char *kaddr;
unsigned long left, copied = 0;
size_t copied = 0;
int i, chunksize;
if (size > count)
size = count;
/* Find which 4k chunk and offset with in that chunk */
i = offset >> PAGE_CACHE_SHIFT;
offset = offset & ~PAGE_CACHE_MASK;
while (size) {
size_t n;
chunksize = PAGE_CACHE_SIZE;
if (offset)
chunksize -= offset;
if (chunksize > size)
chunksize = size;
kaddr = kmap(&page[i]);
left = __copy_to_user(buf, kaddr + offset, chunksize);
kunmap(&page[i]);
if (left) {
copied += (chunksize - left);
break;
}
n = copy_page_to_iter(&page[i], offset, chunksize, to);
copied += n;
if (n != chunksize)
return copied;
offset = 0;
size -= chunksize;
buf += chunksize;
copied += chunksize;
i++;
}
return copied ? copied : -EFAULT;
return copied;
}
/*
@ -222,39 +214,34 @@ hugetlbfs_read_actor(struct page *page, unsigned long offset,
* data. Its *very* similar to do_generic_mapping_read(), we can't use that
* since it has PAGE_CACHE_SIZE assumptions.
*/
static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
size_t len, loff_t *ppos)
static ssize_t hugetlbfs_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct hstate *h = hstate_file(filp);
struct address_space *mapping = filp->f_mapping;
struct file *file = iocb->ki_filp;
struct hstate *h = hstate_file(file);
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
unsigned long index = *ppos >> huge_page_shift(h);
unsigned long offset = *ppos & ~huge_page_mask(h);
unsigned long index = iocb->ki_pos >> huge_page_shift(h);
unsigned long offset = iocb->ki_pos & ~huge_page_mask(h);
unsigned long end_index;
loff_t isize;
ssize_t retval = 0;
/* validate length */
if (len == 0)
goto out;
for (;;) {
while (iov_iter_count(to)) {
struct page *page;
unsigned long nr, ret;
int ra;
size_t nr, copied;
/* nr is the maximum number of bytes to copy from this page */
nr = huge_page_size(h);
isize = i_size_read(inode);
if (!isize)
goto out;
break;
end_index = (isize - 1) >> huge_page_shift(h);
if (index >= end_index) {
if (index > end_index)
goto out;
if (index > end_index)
break;
if (index == end_index) {
nr = ((isize - 1) & ~huge_page_mask(h)) + 1;
if (nr <= offset)
goto out;
break;
}
nr = nr - offset;
@ -265,39 +252,27 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
* We have a HOLE, zero out the user-buffer for the
* length of the hole or request.
*/
ret = len < nr ? len : nr;
if (clear_user(buf, ret))
ra = -EFAULT;
else
ra = 0;
copied = iov_iter_zero(nr, to);
} else {
unlock_page(page);
/*
* We have the page, copy it to user space buffer.
*/
ra = hugetlbfs_read_actor(page, offset, buf, len, nr);
ret = ra;
copied = hugetlbfs_read_actor(page, offset, to, nr);
page_cache_release(page);
}
if (ra < 0) {
if (retval == 0)
retval = ra;
goto out;
offset += copied;
retval += copied;
if (copied != nr && iov_iter_count(to)) {
if (!retval)
retval = -EFAULT;
break;
}
offset += ret;
retval += ret;
len -= ret;
index += offset >> huge_page_shift(h);
offset &= ~huge_page_mask(h);
/* short read or no more work */
if ((ret != nr) || (len == 0))
break;
}
out:
*ppos = ((loff_t)index << huge_page_shift(h)) + offset;
iocb->ki_pos = ((loff_t)index << huge_page_shift(h)) + offset;
return retval;
}
@ -721,7 +696,7 @@ static void init_once(void *foo)
}
const struct file_operations hugetlbfs_file_operations = {
.read = hugetlbfs_read,
.read_iter = hugetlbfs_read_iter,
.mmap = hugetlbfs_file_mmap,
.fsync = noop_fsync,
.get_unmapped_area = hugetlb_get_unmapped_area,

2
fs/jffs2/file.c
View File

@ -51,9 +51,7 @@ const struct file_operations jffs2_file_operations =
{
.llseek = generic_file_llseek,
.open = generic_file_open,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.unlocked_ioctl=jffs2_ioctl,
.mmap = generic_file_readonly_mmap,

2
fs/jfs/file.c
View File

@ -151,8 +151,6 @@ const struct inode_operations jfs_file_inode_operations = {
const struct file_operations jfs_file_operations = {
.open = jfs_open,
.llseek = generic_file_llseek,
.write = new_sync_write,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,

2
fs/logfs/file.c
View File

@ -271,8 +271,6 @@ const struct file_operations logfs_reg_fops = {
.llseek = generic_file_llseek,
.mmap = generic_file_readonly_mmap,
.open = generic_file_open,
.read = new_sync_read,
.write = new_sync_write,
};
const struct address_space_operations logfs_reg_aops = {

2
fs/minix/file.c
View File

@ -14,9 +14,7 @@
*/
const struct file_operations minix_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.fsync = generic_file_fsync,

90
fs/ncpfs/file.c
View File

@ -98,30 +98,24 @@ out:
}
static ssize_t
ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
ncp_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
size_t already_read = 0;
off_t pos;
off_t pos = iocb->ki_pos;
size_t bufsize;
int error;
void* freepage;
void *freepage;
size_t freelen;
ncp_dbg(1, "enter %pD2\n", file);
pos = *ppos;
if ((ssize_t) count < 0) {
return -EINVAL;
}
if (!count)
if (!iov_iter_count(to))
return 0;
if (pos > inode->i_sb->s_maxbytes)
return 0;
if (pos + count > inode->i_sb->s_maxbytes) {
count = inode->i_sb->s_maxbytes - pos;
}
iov_iter_truncate(to, inode->i_sb->s_maxbytes - pos);
error = ncp_make_open(inode, O_RDONLY);
if (error) {
@ -138,31 +132,29 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
goto outrel;
error = 0;
/* First read in as much as possible for each bufsize. */
while (already_read < count) {
while (iov_iter_count(to)) {
int read_this_time;
size_t to_read = min_t(unsigned int,
size_t to_read = min_t(size_t,
bufsize - (pos % bufsize),
count - already_read);
iov_iter_count(to));
error = ncp_read_bounce(NCP_SERVER(inode),
NCP_FINFO(inode)->file_handle,
pos, to_read, buf, &read_this_time,
pos, to_read, to, &read_this_time,
freepage, freelen);
if (error) {
error = -EIO; /* NW errno -> Linux errno */
break;
}
pos += read_this_time;
buf += read_this_time;
already_read += read_this_time;
if (read_this_time != to_read) {
if (read_this_time != to_read)
break;
}
}
vfree(freepage);
*ppos = pos;
iocb->ki_pos = pos;
file_accessed(file);
@ -173,42 +165,26 @@ outrel:
}
static ssize_t
ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
ncp_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
size_t already_written = 0;
off_t pos;
loff_t pos = iocb->ki_pos;
size_t count = iov_iter_count(from);
size_t bufsize;
int errno;
void* bouncebuffer;
void *bouncebuffer;
ncp_dbg(1, "enter %pD2\n", file);
if ((ssize_t) count < 0)
return -EINVAL;
pos = *ppos;
if (file->f_flags & O_APPEND) {
pos = i_size_read(inode);
}
if (pos + count > MAX_NON_LFS && !(file->f_flags&O_LARGEFILE)) {
if (pos >= MAX_NON_LFS) {
return -EFBIG;
}
if (count > MAX_NON_LFS - (u32)pos) {
count = MAX_NON_LFS - (u32)pos;
}
}
if (pos >= inode->i_sb->s_maxbytes) {
if (count || pos > inode->i_sb->s_maxbytes) {
return -EFBIG;
}
}
if (pos + count > inode->i_sb->s_maxbytes) {
count = inode->i_sb->s_maxbytes - pos;
}
errno = generic_write_checks(file, &pos, &count, 0);
if (errno)
return errno;
iov_iter_truncate(from, count);
if (!count)
return 0;
errno = ncp_make_open(inode, O_WRONLY);
if (errno) {
ncp_dbg(1, "open failed, error=%d\n", errno);
@ -216,8 +192,6 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *
}
bufsize = NCP_SERVER(inode)->buffer_size;
already_written = 0;
errno = file_update_time(file);
if (errno)
goto outrel;
@ -227,13 +201,13 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *
errno = -EIO; /* -ENOMEM */
goto outrel;
}
while (already_written < count) {
while (iov_iter_count(from)) {
int written_this_time;
size_t to_write = min_t(unsigned int,
bufsize - (pos % bufsize),
count - already_written);
size_t to_write = min_t(size_t,
bufsize - ((off_t)pos % bufsize),
iov_iter_count(from));
if (copy_from_user(bouncebuffer, buf, to_write)) {
if (copy_from_iter(bouncebuffer, to_write, from) != to_write) {
errno = -EFAULT;
break;
}
@ -244,16 +218,14 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *
break;
}
pos += written_this_time;
buf += written_this_time;
already_written += written_this_time;
if (written_this_time != to_write) {
if (written_this_time != to_write)
break;
}
}
vfree(bouncebuffer);
*ppos = pos;
iocb->ki_pos = pos;
if (pos > i_size_read(inode)) {
mutex_lock(&inode->i_mutex);
@ -277,8 +249,8 @@ static int ncp_release(struct inode *inode, struct file *file) {
const struct file_operations ncp_file_operations =
{
.llseek = generic_file_llseek,
.read = ncp_file_read,
.write = ncp_file_write,
.read_iter = ncp_file_read_iter,
.write_iter = ncp_file_write_iter,
.unlocked_ioctl = ncp_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ncp_compat_ioctl,

6
fs/ncpfs/ncplib_kernel.c
View File

@ -1001,8 +1001,8 @@ out:
*/
int
ncp_read_bounce(struct ncp_server *server, const char *file_id,
__u32 offset, __u16 to_read, char __user *target, int *bytes_read,
void* bounce, __u32 bufsize)
__u32 offset, __u16 to_read, struct iov_iter *to,
int *bytes_read, void *bounce, __u32 bufsize)
{
int result;
@ -1025,7 +1025,7 @@ ncp_read_bounce(struct ncp_server *server, const char *file_id,
(offset & 1);
*bytes_read = len;
result = 0;
if (copy_to_user(target, source, len))
if (copy_to_iter(source, len, to) != len)
result = -EFAULT;
}
}

2
fs/ncpfs/ncplib_kernel.h
View File

@ -53,7 +53,7 @@ static inline int ncp_read_bounce_size(__u32 size) {
return sizeof(struct ncp_reply_header) + 2 + 2 + size + 8;
};
int ncp_read_bounce(struct ncp_server *, const char *, __u32, __u16,
char __user *, int *, void* bounce, __u32 bouncelen);
struct iov_iter *, int *, void *bounce, __u32 bouncelen);
int ncp_read_kernel(struct ncp_server *, const char *, __u32, __u16,
char *, int *);
int ncp_write_kernel(struct ncp_server *, const char *, __u32, __u16,

2
fs/nfs/file.c
View File

@ -926,8 +926,6 @@ EXPORT_SYMBOL_GPL(nfs_flock);
const struct file_operations nfs_file_operations = {
.llseek = nfs_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = nfs_file_read,
.write_iter = nfs_file_write,
.mmap = nfs_file_mmap,

2
fs/nfs/nfs4file.c
View File

@ -170,8 +170,6 @@ const struct file_operations nfs4_file_operations = {
#else
.llseek = nfs_file_llseek,
#endif
.read = new_sync_read,
.write = new_sync_write,
.read_iter = nfs_file_read,
.write_iter = nfs_file_write,
.mmap = nfs_file_mmap,

2
fs/nilfs2/file.c
View File

@ -143,8 +143,6 @@ static int nilfs_file_mmap(struct file *file, struct vm_area_struct *vma)
*/
const struct file_operations nilfs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.unlocked_ioctl = nilfs_ioctl,

2
fs/ntfs/file.c
View File

@ -2048,10 +2048,8 @@ static int ntfs_file_fsync(struct file *filp, loff_t start, loff_t end,
const struct file_operations ntfs_file_ops = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
#ifdef NTFS_RW
.write = new_sync_write,
.write_iter = ntfs_file_write_iter,
.fsync = ntfs_file_fsync,
#endif /* NTFS_RW */

4
fs/ocfs2/file.c
View File

@ -2681,8 +2681,6 @@ const struct inode_operations ocfs2_special_file_iops = {
*/
const struct file_operations ocfs2_fops = {
.llseek = ocfs2_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.mmap = ocfs2_mmap,
.fsync = ocfs2_sync_file,
.release = ocfs2_file_release,
@ -2729,8 +2727,6 @@ const struct file_operations ocfs2_dops = {
*/
const struct file_operations ocfs2_fops_no_plocks = {
.llseek = ocfs2_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.mmap = ocfs2_mmap,
.fsync = ocfs2_sync_file,
.release = ocfs2_file_release,

2
fs/omfs/file.c
View File

@ -337,8 +337,6 @@ static sector_t omfs_bmap(struct address_space *mapping, sector_t block)
const struct file_operations omfs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,

4
fs/open.c
View File

@ -734,10 +734,10 @@ static int do_dentry_open(struct file *f,
if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
i_readcount_inc(inode);
if ((f->f_mode & FMODE_READ) &&
likely(f->f_op->read || f->f_op->aio_read || f->f_op->read_iter))
likely(f->f_op->read || f->f_op->read_iter))
f->f_mode |= FMODE_CAN_READ;
if ((f->f_mode & FMODE_WRITE) &&
likely(f->f_op->write || f->f_op->aio_write || f->f_op->write_iter))
likely(f->f_op->write || f->f_op->write_iter))
f->f_mode |= FMODE_CAN_WRITE;
f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);

2
fs/pipe.c
View File

@ -946,9 +946,7 @@ err:
const struct file_operations pipefifo_fops = {
.open = fifo_open,
.llseek = no_llseek,
.read = new_sync_read,
.read_iter = pipe_read,
.write = new_sync_write,
.write_iter = pipe_write,
.poll = pipe_poll,
.unlocked_ioctl = pipe_ioctl,

2
fs/ramfs/file-mmu.c
View File

@ -31,9 +31,7 @@
#include "internal.h"
const struct file_operations ramfs_file_operations = {
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.fsync = noop_fsync,

2
fs/ramfs/file-nommu.c
View File

@ -44,9 +44,7 @@ const struct file_operations ramfs_file_operations = {
.mmap_capabilities = ramfs_mmap_capabilities,
.mmap = ramfs_nommu_mmap,
.get_unmapped_area = ramfs_nommu_get_unmapped_area,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.fsync = noop_fsync,
.splice_read = generic_file_splice_read,

109
fs/read_write.c
View File

@ -22,13 +22,10 @@
#include <asm/unistd.h>
typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *);
typedef ssize_t (*iov_fn_t)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
typedef ssize_t (*iter_fn_t)(struct kiocb *, struct iov_iter *);
const struct file_operations generic_ro_fops = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.mmap = generic_file_readonly_mmap,
.splice_read = generic_file_splice_read,
@ -411,24 +408,7 @@ int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t
return count > MAX_RW_COUNT ? MAX_RW_COUNT : count;
}
ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
{
struct iovec iov = { .iov_base = buf, .iov_len = len };
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
EXPORT_SYMBOL(do_sync_read);
ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
{
struct iovec iov = { .iov_base = buf, .iov_len = len };
struct kiocb kiocb;
@ -445,24 +425,17 @@ ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *p
return ret;
}
EXPORT_SYMBOL(new_sync_read);
ssize_t __vfs_read(struct file *file, char __user *buf, size_t count,
loff_t *pos)
{
ssize_t ret;
if (file->f_op->read)
ret = file->f_op->read(file, buf, count, pos);
else if (file->f_op->aio_read)
ret = do_sync_read(file, buf, count, pos);
return file->f_op->read(file, buf, count, pos);
else if (file->f_op->read_iter)
ret = new_sync_read(file, buf, count, pos);
return new_sync_read(file, buf, count, pos);
else
ret = -EINVAL;
return ret;
return -EINVAL;
}
EXPORT_SYMBOL(__vfs_read);
ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
{
@ -491,24 +464,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
EXPORT_SYMBOL(vfs_read);
ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
{
struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len };
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
EXPORT_SYMBOL(do_sync_write);
ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
{
struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len };
struct kiocb kiocb;
@ -525,7 +481,17 @@ ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, lo
return ret;
}
EXPORT_SYMBOL(new_sync_write);
ssize_t __vfs_write(struct file *file, const char __user *p, size_t count,
loff_t *pos)
{
if (file->f_op->write)
return file->f_op->write(file, p, count, pos);
else if (file->f_op->write_iter)
return new_sync_write(file, p, count, pos);
else
return -EINVAL;
}
EXPORT_SYMBOL(__vfs_write);
ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t *pos)
{
@ -541,12 +507,7 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t
p = (__force const char __user *)buf;
if (count > MAX_RW_COUNT)
count = MAX_RW_COUNT;
if (file->f_op->write)
ret = file->f_op->write(file, p, count, pos);
else if (file->f_op->aio_write)
ret = do_sync_write(file, p, count, pos);
else
ret = new_sync_write(file, p, count, pos);
ret = __vfs_write(file, p, count, pos);
set_fs(old_fs);
if (ret > 0) {
fsnotify_modify(file);
@ -573,12 +534,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_
if (ret >= 0) {
count = ret;
file_start_write(file);
if (file->f_op->write)
ret = file->f_op->write(file, buf, count, pos);
else if (file->f_op->aio_write)
ret = do_sync_write(file, buf, count, pos);
else
ret = new_sync_write(file, buf, count, pos);
ret = __vfs_write(file, buf, count, pos);
if (ret > 0) {
fsnotify_modify(file);
add_wchar(current, ret);
@ -710,21 +666,6 @@ static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter,
return ret;
}
static ssize_t do_sync_readv_writev(struct file *filp, struct iov_iter *iter,
loff_t *ppos, iov_fn_t fn)
{
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
ret = fn(&kiocb, iter->iov, iter->nr_segs, kiocb.ki_pos);
BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
/* Do it by hand, with file-ops */
static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter,
loff_t *ppos, io_fn_t fn)
@ -839,7 +780,6 @@ static ssize_t do_readv_writev(int type, struct file *file,
struct iov_iter iter;
ssize_t ret;
io_fn_t fn;
iov_fn_t fnv;
iter_fn_t iter_fn;
ret = import_iovec(type, uvector, nr_segs,
@ -854,22 +794,17 @@ static ssize_t do_readv_writev(int type, struct file *file,
if (ret < 0)
goto out;
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;
fnv = file->f_op->aio_read;
iter_fn = file->f_op->read_iter;
} else {
fn = (io_fn_t)file->f_op->write;
fnv = file->f_op->aio_write;
iter_fn = file->f_op->write_iter;
file_start_write(file);
}
if (iter_fn)
ret = do_iter_readv_writev(file, &iter, pos, iter_fn);
else if (fnv)
ret = do_sync_readv_writev(file, &iter, pos, fnv);
else
ret = do_loop_readv_writev(file, &iter, pos, fn);
@ -1019,7 +954,6 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
struct iov_iter iter;
ssize_t ret;
io_fn_t fn;
iov_fn_t fnv;
iter_fn_t iter_fn;
ret = compat_import_iovec(type, uvector, nr_segs,
@ -1034,22 +968,17 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
if (ret < 0)
goto out;
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;
fnv = file->f_op->aio_read;
iter_fn = file->f_op->read_iter;
} else {
fn = (io_fn_t)file->f_op->write;
fnv = file->f_op->aio_write;
iter_fn = file->f_op->write_iter;
file_start_write(file);
}
if (iter_fn)
ret = do_iter_readv_writev(file, &iter, pos, iter_fn);
else if (fnv)
ret = do_sync_readv_writev(file, &iter, pos, fnv);
else
ret = do_loop_readv_writev(file, &iter, pos, fn);

2
fs/reiserfs/file.c
View File

@ -243,8 +243,6 @@ drop_write_lock:
}
const struct file_operations reiserfs_file_operations = {
.read = new_sync_read,
.write = new_sync_write,
.unlocked_ioctl = reiserfs_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = reiserfs_compat_ioctl,

1
fs/romfs/mmap-nommu.c
View File

@ -81,7 +81,6 @@ static unsigned romfs_mmap_capabilities(struct file *file)
const struct file_operations romfs_ro_fops = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.splice_read = generic_file_splice_read,
.mmap = romfs_mmap,

2
fs/sysv/file.c
View File

@ -21,9 +21,7 @@
*/
const struct file_operations sysv_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.fsync = generic_file_fsync,

2
fs/ubifs/file.c
View File

@ -1580,8 +1580,6 @@ const struct inode_operations ubifs_symlink_inode_operations = {
const struct file_operations ubifs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.write_iter = ubifs_write_iter,
.mmap = ubifs_file_mmap,

2
fs/udf/file.c
View File

@ -240,12 +240,10 @@ static int udf_release_file(struct inode *inode, struct file *filp)
}
const struct file_operations udf_file_operations = {
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.unlocked_ioctl = udf_ioctl,
.open = generic_file_open,
.mmap = generic_file_mmap,
.write = new_sync_write,
.write_iter = udf_file_write_iter,
.release = udf_release_file,
.fsync = generic_file_fsync,

2
fs/ufs/file.c
View File

@ -35,9 +35,7 @@
const struct file_operations ufs_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
.read_iter = generic_file_read_iter,
.write = new_sync_write,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.open = generic_file_open,

2
fs/xfs/xfs_file.c
View File

@ -1386,8 +1386,6 @@ xfs_file_llseek(
const struct file_operations xfs_file_operations = {
.llseek = xfs_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = xfs_file_read_iter,
.write_iter = xfs_file_write_iter,
.splice_read = xfs_file_splice_read,

7
include/linux/fs.h
View File

@ -1562,8 +1562,6 @@ struct file_operations {
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
int (*iterate) (struct file *, struct dir_context *);
@ -1639,6 +1637,7 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
struct iovec **ret_pointer);
extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t vfs_readv(struct file *, const struct iovec __user *,
@ -2573,10 +2572,6 @@ extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *);
extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *);
extern ssize_t generic_file_direct_write(struct kiocb *, struct iov_iter *, loff_t);
extern ssize_t generic_perform_write(struct file *, struct iov_iter *, loff_t);
extern ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos);
extern ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos);
extern ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos);
extern ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos);
ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos);
ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos);

8
include/net/9p/client.h
View File

@ -211,6 +211,8 @@ struct p9_dirent {
char d_name[256];
};
struct iov_iter;
int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb);
int p9_client_rename(struct p9_fid *fid, struct p9_fid *newdirfid,
const char *name);
@ -236,10 +238,8 @@ int p9_client_clunk(struct p9_fid *fid);
int p9_client_fsync(struct p9_fid *fid, int datasync);
int p9_client_remove(struct p9_fid *fid);
int p9_client_unlinkat(struct p9_fid *dfid, const char *name, int flags);
int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,
u64 offset, u32 count);
int p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
u64 offset, u32 count);
int p9_client_read(struct p9_fid *fid, u64 offset, struct iov_iter *to, int *err);
int p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err);
int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset);
int p9dirent_read(struct p9_client *clnt, char *buf, int len,
struct p9_dirent *dirent);

2
include/net/9p/transport.h
View File

@ -61,7 +61,7 @@ struct p9_trans_module {
int (*cancel) (struct p9_client *, struct p9_req_t *req);
int (*cancelled)(struct p9_client *, struct p9_req_t *req);
int (*zc_request)(struct p9_client *, struct p9_req_t *,
char *, char *, int , int, int, int);
struct iov_iter *, struct iov_iter *, int , int, int);
};
void v9fs_register_trans(struct p9_trans_module *m);

2
kernel/acct.c
View File

@ -213,7 +213,7 @@ static int acct_on(struct filename *pathname)
return -EACCES;
}
if (!file->f_op->write) {
if (!(file->f_mode & FMODE_CAN_WRITE)) {
kfree(acct);
filp_close(file, NULL);
return -EIO;

4
mm/nommu.c
View File

@ -1016,7 +1016,7 @@ static int validate_mmap_request(struct file *file,
* device */
if (!file->f_op->get_unmapped_area)
capabilities &= ~NOMMU_MAP_DIRECT;
if (!file->f_op->read)
if (!(file->f_mode & FMODE_CAN_READ))
capabilities &= ~NOMMU_MAP_COPY;
/* The file shall have been opened with read permission. */
@ -1240,7 +1240,7 @@ static int do_mmap_private(struct vm_area_struct *vma,
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = vma->vm_file->f_op->read(vma->vm_file, base, len, &fpos);
ret = __vfs_read(vma->vm_file, base, len, &fpos);
set_fs(old_fs);
if (ret < 0)

2
mm/shmem.c
View File

@ -3118,8 +3118,6 @@ static const struct file_operations shmem_file_operations = {
.mmap = shmem_mmap,
#ifdef CONFIG_TMPFS
.llseek = shmem_file_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = shmem_file_read_iter,
.write_iter = generic_file_write_iter,
.fsync = noop_fsync,

260
net/9p/client.c
View File

@ -34,6 +34,7 @@
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/uaccess.h>
#include <linux/uio.h>
#include <net/9p/9p.h>
#include <linux/parser.h>
#include <net/9p/client.h>
@ -555,7 +556,7 @@ out_err:
*/
static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req,
char *uidata, int in_hdrlen, int kern_buf)
struct iov_iter *uidata, int in_hdrlen)
{
int err;
int ecode;
@ -591,16 +592,11 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req,
ename = &req->rc->sdata[req->rc->offset];
if (len > inline_len) {
/* We have error in external buffer */
if (kern_buf) {
memcpy(ename + inline_len, uidata,
len - inline_len);
} else {
err = copy_from_user(ename + inline_len,
uidata, len - inline_len);
if (err) {
err = -EFAULT;
goto out_err;
}
err = copy_from_iter(ename + inline_len,
len - inline_len, uidata);
if (err != len - inline_len) {
err = -EFAULT;
goto out_err;
}
}
ename = NULL;
@ -806,8 +802,8 @@ reterr:
* p9_client_zc_rpc - issue a request and wait for a response
* @c: client session
* @type: type of request
* @uidata: user bffer that should be ued for zero copy read
* @uodata: user buffer that shoud be user for zero copy write
* @uidata: destination for zero copy read
* @uodata: source for zero copy write
* @inlen: read buffer size
* @olen: write buffer size
* @hdrlen: reader header size, This is the size of response protocol data
@ -816,9 +812,10 @@ reterr:
* Returns request structure (which client must free using p9_free_req)
*/
static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
char *uidata, char *uodata,
struct iov_iter *uidata,
struct iov_iter *uodata,
int inlen, int olen, int in_hdrlen,
int kern_buf, const char *fmt, ...)
const char *fmt, ...)
{
va_list ap;
int sigpending, err;
@ -841,12 +838,8 @@ static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
} else
sigpending = 0;
/* If we are called with KERNEL_DS force kern_buf */
if (segment_eq(get_fs(), KERNEL_DS))
kern_buf = 1;
err = c->trans_mod->zc_request(c, req, uidata, uodata,
inlen, olen, in_hdrlen, kern_buf);
inlen, olen, in_hdrlen);
if (err < 0) {
if (err == -EIO)
c->status = Disconnected;
@ -876,7 +869,7 @@ static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
if (err < 0)
goto reterr;
err = p9_check_zc_errors(c, req, uidata, in_hdrlen, kern_buf);
err = p9_check_zc_errors(c, req, uidata, in_hdrlen);
trace_9p_client_res(c, type, req->rc->tag, err);
if (!err)
return req;
@ -1123,6 +1116,7 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
fid = NULL;
goto error;
}
fid->uid = n_uname;
req = p9_client_rpc(clnt, P9_TATTACH, "ddss?u", fid->fid,
afid ? afid->fid : P9_NOFID, uname, aname, n_uname);
@ -1541,142 +1535,128 @@ error:
EXPORT_SYMBOL(p9_client_unlinkat);
int
p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
u32 count)
p9_client_read(struct p9_fid *fid, u64 offset, struct iov_iter *to, int *err)
{
char *dataptr;
int kernel_buf = 0;
struct p9_client *clnt = fid->clnt;
struct p9_req_t *req;
struct p9_client *clnt;
int err, rsize, non_zc = 0;
int total = 0;
p9_debug(P9_DEBUG_9P, ">>> TREAD fid %d offset %llu %d\n",
fid->fid, (unsigned long long) offset, count);
err = 0;
clnt = fid->clnt;
fid->fid, (unsigned long long) offset, (int)iov_iter_count(to));
rsize = fid->iounit;
if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
rsize = clnt->msize - P9_IOHDRSZ;
while (iov_iter_count(to)) {
int count = iov_iter_count(to);
int rsize, non_zc = 0;
char *dataptr;
rsize = fid->iounit;
if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
rsize = clnt->msize - P9_IOHDRSZ;
if (count < rsize)
rsize = count;
if (count < rsize)
rsize = count;
/* Don't bother zerocopy for small IO (< 1024) */
if (clnt->trans_mod->zc_request && rsize > 1024) {
char *indata;
if (data) {
kernel_buf = 1;
indata = data;
} else
indata = (__force char *)udata;
/*
* response header len is 11
* PDU Header(7) + IO Size (4)
*/
req = p9_client_zc_rpc(clnt, P9_TREAD, indata, NULL, rsize, 0,
11, kernel_buf, "dqd", fid->fid,
offset, rsize);
} else {
non_zc = 1;
req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,
rsize);
}
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;
}
err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr);
if (err) {
trace_9p_protocol_dump(clnt, req->rc);
goto free_and_error;
}
p9_debug(P9_DEBUG_9P, "<<< RREAD count %d\n", count);
if (non_zc) {
if (data) {
memmove(data, dataptr, count);
/* Don't bother zerocopy for small IO (< 1024) */
if (clnt->trans_mod->zc_request && rsize > 1024) {
/*
* response header len is 11
* PDU Header(7) + IO Size (4)
*/
req = p9_client_zc_rpc(clnt, P9_TREAD, to, NULL, rsize,
0, 11, "dqd", fid->fid,
offset, rsize);
} else {
err = copy_to_user(udata, dataptr, count);
if (err) {
err = -EFAULT;
goto free_and_error;
}
non_zc = 1;
req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,
rsize);
}
if (IS_ERR(req)) {
*err = PTR_ERR(req);
break;
}
}
p9_free_req(clnt, req);
return count;
free_and_error:
p9_free_req(clnt, req);
error:
return err;
*err = p9pdu_readf(req->rc, clnt->proto_version,
"D", &count, &dataptr);
if (*err) {
trace_9p_protocol_dump(clnt, req->rc);
p9_free_req(clnt, req);
break;
}
p9_debug(P9_DEBUG_9P, "<<< RREAD count %d\n", count);
if (!count) {
p9_free_req(clnt, req);
break;
}
if (non_zc) {
int n = copy_to_iter(dataptr, count, to);
total += n;
offset += n;
if (n != count) {
*err = -EFAULT;
p9_free_req(clnt, req);
break;
}
} else {
iov_iter_advance(to, count);
total += count;
offset += count;
}
p9_free_req(clnt, req);
}
return total;
}
EXPORT_SYMBOL(p9_client_read);
int
p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
u64 offset, u32 count)
p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err)
{
int err, rsize;
int kernel_buf = 0;
struct p9_client *clnt;
struct p9_client *clnt = fid->clnt;
struct p9_req_t *req;
int total = 0;
p9_debug(P9_DEBUG_9P, ">>> TWRITE fid %d offset %llu count %d\n",
fid->fid, (unsigned long long) offset, count);
err = 0;
clnt = fid->clnt;
p9_debug(P9_DEBUG_9P, ">>> TWRITE fid %d offset %llu count %zd\n",
fid->fid, (unsigned long long) offset,
iov_iter_count(from));
rsize = fid->iounit;
if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
rsize = clnt->msize - P9_IOHDRSZ;
while (iov_iter_count(from)) {
int count = iov_iter_count(from);
int rsize = fid->iounit;
if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
rsize = clnt->msize - P9_IOHDRSZ;
if (count < rsize)
rsize = count;
if (count < rsize)
rsize = count;
/* Don't bother zerocopy for small IO (< 1024) */
if (clnt->trans_mod->zc_request && rsize > 1024) {
char *odata;
if (data) {
kernel_buf = 1;
odata = data;
} else
odata = (char *)udata;
req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, odata, 0, rsize,
P9_ZC_HDR_SZ, kernel_buf, "dqd",
fid->fid, offset, rsize);
} else {
if (data)
req = p9_client_rpc(clnt, P9_TWRITE, "dqD", fid->fid,
offset, rsize, data);
else
req = p9_client_rpc(clnt, P9_TWRITE, "dqU", fid->fid,
offset, rsize, udata);
/* Don't bother zerocopy for small IO (< 1024) */
if (clnt->trans_mod->zc_request && rsize > 1024) {
req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, from, 0,
rsize, P9_ZC_HDR_SZ, "dqd",
fid->fid, offset, rsize);
} else {
req = p9_client_rpc(clnt, P9_TWRITE, "dqV", fid->fid,
offset, rsize, from);
}
if (IS_ERR(req)) {
*err = PTR_ERR(req);
break;
}
*err = p9pdu_readf(req->rc, clnt->proto_version, "d", &count);
if (*err) {
trace_9p_protocol_dump(clnt, req->rc);
p9_free_req(clnt, req);
}
p9_debug(P9_DEBUG_9P, "<<< RWRITE count %d\n", count);
p9_free_req(clnt, req);
iov_iter_advance(from, count);
total += count;
offset += count;
}
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;
}
err = p9pdu_readf(req->rc, clnt->proto_version, "d", &count);
if (err) {
trace_9p_protocol_dump(clnt, req->rc);
goto free_and_error;
}
p9_debug(P9_DEBUG_9P, "<<< RWRITE count %d\n", count);
p9_free_req(clnt, req);
return count;
free_and_error:
p9_free_req(clnt, req);
error:
return err;
return total;
}
EXPORT_SYMBOL(p9_client_write);
@ -2068,6 +2048,10 @@ int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
struct p9_client *clnt;
struct p9_req_t *req;
char *dataptr;
struct kvec kv = {.iov_base = data, .iov_len = count};
struct iov_iter to;
iov_iter_kvec(&to, READ | ITER_KVEC, &kv, 1, count);
p9_debug(P9_DEBUG_9P, ">>> TREADDIR fid %d offset %llu count %d\n",
fid->fid, (unsigned long long) offset, count);
@ -2088,8 +2072,8 @@ int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
* response header len is 11
* PDU Header(7) + IO Size (4)
*/
req = p9_client_zc_rpc(clnt, P9_TREADDIR, data, NULL, rsize, 0,
11, 1, "dqd", fid->fid, offset, rsize);
req = p9_client_zc_rpc(clnt, P9_TREADDIR, &to, NULL, rsize, 0,
11, "dqd", fid->fid, offset, rsize);
} else {
non_zc = 1;
req = p9_client_rpc(clnt, P9_TREADDIR, "dqd", fid->fid,

24
net/9p/protocol.c
View File

@ -33,6 +33,7 @@
#include <linux/sched.h>
#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/uio.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include "protocol.h"
@ -69,10 +70,11 @@ static size_t pdu_write(struct p9_fcall *pdu, const void *data, size_t size)
}
static size_t
pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size)
pdu_write_u(struct p9_fcall *pdu, struct iov_iter *from, size_t size)
{
size_t len = min(pdu->capacity - pdu->size, size);
if (copy_from_user(&pdu->sdata[pdu->size], udata, len))
struct iov_iter i = *from;
if (copy_from_iter(&pdu->sdata[pdu->size], len, &i) != len)
len = 0;
pdu->size += len;
@ -437,23 +439,13 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
stbuf->extension, stbuf->n_uid,
stbuf->n_gid, stbuf->n_muid);
} break;
case 'D':{
uint32_t count = va_arg(ap, uint32_t);
const void *data = va_arg(ap, const void *);
errcode = p9pdu_writef(pdu, proto_version, "d",
count);
if (!errcode && pdu_write(pdu, data, count))
errcode = -EFAULT;
}
break;
case 'U':{
case 'V':{
int32_t count = va_arg(ap, int32_t);
const char __user *udata =
va_arg(ap, const void __user *);
struct iov_iter *from =
va_arg(ap, struct iov_iter *);
errcode = p9pdu_writef(pdu, proto_version, "d",
count);
if (!errcode && pdu_write_u(pdu, udata, count))
if (!errcode && pdu_write_u(pdu, from, count))
errcode = -EFAULT;
}
break;

42
net/9p/trans_common.c
View File

@ -12,12 +12,8 @@
*
*/
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include <linux/scatterlist.h>
#include "trans_common.h"
/**
* p9_release_req_pages - Release pages after the transaction.
@ -31,39 +27,3 @@ void p9_release_pages(struct page **pages, int nr_pages)
put_page(pages[i]);
}
EXPORT_SYMBOL(p9_release_pages);
/**
* p9_nr_pages - Return number of pages needed to accommodate the payload.
*/
int p9_nr_pages(char *data, int len)
{
unsigned long start_page, end_page;
start_page = (unsigned long)data >> PAGE_SHIFT;
end_page = ((unsigned long)data + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
return end_page - start_page;
}
EXPORT_SYMBOL(p9_nr_pages);
/**
* payload_gup - Translates user buffer into kernel pages and
* pins them either for read/write through get_user_pages_fast().
* @req: Request to be sent to server.
* @pdata_off: data offset into the first page after translation (gup).
* @pdata_len: Total length of the IO. gup may not return requested # of pages.
* @nr_pages: number of pages to accommodate the payload
* @rw: Indicates if the pages are for read or write.
*/
int p9_payload_gup(char *data, int *nr_pages, struct page **pages, int write)
{
int nr_mapped_pages;
nr_mapped_pages = get_user_pages_fast((unsigned long)data,
*nr_pages, write, pages);
if (nr_mapped_pages <= 0)
return nr_mapped_pages;
*nr_pages = nr_mapped_pages;
return 0;
}
EXPORT_SYMBOL(p9_payload_gup);

2
net/9p/trans_common.h
View File

@ -13,5 +13,3 @@
*/
void p9_release_pages(struct page **, int);
int p9_payload_gup(char *, int *, struct page **, int);
int p9_nr_pages(char *, int);

139
net/9p/trans_virtio.c
View File

@ -217,15 +217,15 @@ static int p9_virtio_cancel(struct p9_client *client, struct p9_req_t *req)
* @start: which segment of the sg_list to start at
* @pdata: a list of pages to add into sg.
* @nr_pages: number of pages to pack into the scatter/gather list
* @data: data to pack into scatter/gather list
* @offs: amount of data in the beginning of first page _not_ to pack
* @count: amount of data to pack into the scatter/gather list
*/
static int
pack_sg_list_p(struct scatterlist *sg, int start, int limit,
struct page **pdata, int nr_pages, char *data, int count)
struct page **pdata, int nr_pages, size_t offs, int count)
{
int i = 0, s;
int data_off;
int data_off = offs;
int index = start;
BUG_ON(nr_pages > (limit - start));
@ -233,16 +233,14 @@ pack_sg_list_p(struct scatterlist *sg, int start, int limit,
* if the first page doesn't start at
* page boundary find the offset
*/
data_off = offset_in_page(data);
while (nr_pages) {
s = rest_of_page(data);
s = PAGE_SIZE - data_off;
if (s > count)
s = count;
/* Make sure we don't terminate early. */
sg_unmark_end(&sg[index]);
sg_set_page(&sg[index++], pdata[i++], s, data_off);
data_off = 0;
data += s;
count -= s;
nr_pages--;
}
@ -314,11 +312,20 @@ req_retry:
}
static int p9_get_mapped_pages(struct virtio_chan *chan,
struct page **pages, char *data,
int nr_pages, int write, int kern_buf)
struct page ***pages,
struct iov_iter *data,
int count,
size_t *offs,
int *need_drop)
{
int nr_pages;
int err;
if (!kern_buf) {
if (!iov_iter_count(data))
return 0;
if (!(data->type & ITER_KVEC)) {
int n;
/*
* We allow only p9_max_pages pinned. We wait for the
* Other zc request to finish here
@ -329,26 +336,49 @@ static int p9_get_mapped_pages(struct virtio_chan *chan,
if (err == -ERESTARTSYS)
return err;
}
err = p9_payload_gup(data, &nr_pages, pages, write);
if (err < 0)
return err;
n = iov_iter_get_pages_alloc(data, pages, count, offs);
if (n < 0)
return n;
*need_drop = 1;
nr_pages = DIV_ROUND_UP(n + *offs, PAGE_SIZE);
atomic_add(nr_pages, &vp_pinned);
return n;
} else {
/* kernel buffer, no need to pin pages */
int s, index = 0;
int count = nr_pages;
while (nr_pages) {
s = rest_of_page(data);
if (is_vmalloc_addr(data))
pages[index++] = vmalloc_to_page(data);
else
pages[index++] = kmap_to_page(data);
data += s;
nr_pages--;
int index;
size_t len;
void *p;
/* we'd already checked that it's non-empty */
while (1) {
len = iov_iter_single_seg_count(data);
if (likely(len)) {
p = data->kvec->iov_base + data->iov_offset;
break;
}
iov_iter_advance(data, 0);
}
nr_pages = count;
if (len > count)
len = count;
nr_pages = DIV_ROUND_UP((unsigned long)p + len, PAGE_SIZE) -
(unsigned long)p / PAGE_SIZE;
*pages = kmalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
if (!*pages)
return -ENOMEM;
*need_drop = 0;
p -= (*offs = (unsigned long)p % PAGE_SIZE);
for (index = 0; index < nr_pages; index++) {
if (is_vmalloc_addr(p))
(*pages)[index] = vmalloc_to_page(p);
else
(*pages)[index] = kmap_to_page(p);
p += PAGE_SIZE;
}
return len;
}
return nr_pages;
}
/**
@ -364,8 +394,8 @@ static int p9_get_mapped_pages(struct virtio_chan *chan,
*/
static int
p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
char *uidata, char *uodata, int inlen,
int outlen, int in_hdr_len, int kern_buf)
struct iov_iter *uidata, struct iov_iter *uodata,
int inlen, int outlen, int in_hdr_len)
{
int in, out, err, out_sgs, in_sgs;
unsigned long flags;
@ -373,41 +403,32 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
struct page **in_pages = NULL, **out_pages = NULL;
struct virtio_chan *chan = client->trans;
struct scatterlist *sgs[4];
size_t offs;
int need_drop = 0;
p9_debug(P9_DEBUG_TRANS, "virtio request\n");
if (uodata) {
out_nr_pages = p9_nr_pages(uodata, outlen);
out_pages = kmalloc(sizeof(struct page *) * out_nr_pages,
GFP_NOFS);
if (!out_pages) {
err = -ENOMEM;
goto err_out;
int n = p9_get_mapped_pages(chan, &out_pages, uodata,
outlen, &offs, &need_drop);
if (n < 0)
return n;
out_nr_pages = DIV_ROUND_UP(n + offs, PAGE_SIZE);
if (n != outlen) {
__le32 v = cpu_to_le32(n);
memcpy(&req->tc->sdata[req->tc->size - 4], &v, 4);
outlen = n;
}
out_nr_pages = p9_get_mapped_pages(chan, out_pages, uodata,
out_nr_pages, 0, kern_buf);
if (out_nr_pages < 0) {
err = out_nr_pages;
kfree(out_pages);
out_pages = NULL;
goto err_out;
}
}
if (uidata) {
in_nr_pages = p9_nr_pages(uidata, inlen);
in_pages = kmalloc(sizeof(struct page *) * in_nr_pages,
GFP_NOFS);
if (!in_pages) {
err = -ENOMEM;
goto err_out;
}
in_nr_pages = p9_get_mapped_pages(chan, in_pages, uidata,
in_nr_pages, 1, kern_buf);
if (in_nr_pages < 0) {
err = in_nr_pages;
kfree(in_pages);
in_pages = NULL;
goto err_out;
} else if (uidata) {
int n = p9_get_mapped_pages(chan, &in_pages, uidata,
inlen, &offs, &need_drop);
if (n < 0)
return n;
in_nr_pages = DIV_ROUND_UP(n + offs, PAGE_SIZE);
if (n != inlen) {
__le32 v = cpu_to_le32(n);
memcpy(&req->tc->sdata[req->tc->size - 4], &v, 4);
inlen = n;
}
}
req->status = REQ_STATUS_SENT;
@ -426,7 +447,7 @@ req_retry_pinned:
if (out_pages) {
sgs[out_sgs++] = chan->sg + out;
out += pack_sg_list_p(chan->sg, out, VIRTQUEUE_NUM,
out_pages, out_nr_pages, uodata, outlen);
out_pages, out_nr_pages, offs, outlen);
}
/*
@ -444,7 +465,7 @@ req_retry_pinned:
if (in_pages) {
sgs[out_sgs + in_sgs++] = chan->sg + out + in;
in += pack_sg_list_p(chan->sg, out + in, VIRTQUEUE_NUM,
in_pages, in_nr_pages, uidata, inlen);
in_pages, in_nr_pages, offs, inlen);
}
BUG_ON(out_sgs + in_sgs > ARRAY_SIZE(sgs));
@ -478,7 +499,7 @@ req_retry_pinned:
* Non kernel buffers are pinned, unpin them
*/
err_out:
if (!kern_buf) {
if (need_drop) {
if (in_pages) {
p9_release_pages(in_pages, in_nr_pages);
atomic_sub(in_nr_pages, &vp_pinned);

2
net/socket.c
View File

@ -140,8 +140,6 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
static const struct file_operations socket_file_ops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = new_sync_read,
.write = new_sync_write,
.read_iter = sock_read_iter,
.write_iter = sock_write_iter,
.poll = sock_poll,

39
sound/core/pcm_native.c
View File

@ -3033,9 +3033,7 @@ static ssize_t snd_pcm_write(struct file *file, const char __user *buf,
return result;
}
static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
static ssize_t snd_pcm_readv(struct kiocb *iocb, struct iov_iter *to)
{
struct snd_pcm_file *pcm_file;
struct snd_pcm_substream *substream;
@ -3052,16 +3050,18 @@ static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov,
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
if (nr_segs > 1024 || nr_segs != runtime->channels)
if (!iter_is_iovec(to))
return -EINVAL;
if (!frame_aligned(runtime, iov->iov_len))
if (to->nr_segs > 1024 || to->nr_segs != runtime->channels)
return -EINVAL;
frames = bytes_to_samples(runtime, iov->iov_len);
bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL);
if (!frame_aligned(runtime, to->iov->iov_len))
return -EINVAL;
frames = bytes_to_samples(runtime, to->iov->iov_len);
bufs = kmalloc(sizeof(void *) * to->nr_segs, GFP_KERNEL);
if (bufs == NULL)
return -ENOMEM;
for (i = 0; i < nr_segs; ++i)
bufs[i] = iov[i].iov_base;
for (i = 0; i < to->nr_segs; ++i)
bufs[i] = to->iov[i].iov_base;
result = snd_pcm_lib_readv(substream, bufs, frames);
if (result > 0)
result = frames_to_bytes(runtime, result);
@ -3069,8 +3069,7 @@ static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov,
return result;
}
static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
static ssize_t snd_pcm_writev(struct kiocb *iocb, struct iov_iter *from)
{
struct snd_pcm_file *pcm_file;
struct snd_pcm_substream *substream;
@ -3087,15 +3086,17 @@ static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov,
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
if (nr_segs > 128 || nr_segs != runtime->channels ||
!frame_aligned(runtime, iov->iov_len))
if (!iter_is_iovec(from))
return -EINVAL;
frames = bytes_to_samples(runtime, iov->iov_len);
bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL);
if (from->nr_segs > 128 || from->nr_segs != runtime->channels ||
!frame_aligned(runtime, from->iov->iov_len))
return -EINVAL;
frames = bytes_to_samples(runtime, from->iov->iov_len);
bufs = kmalloc(sizeof(void *) * from->nr_segs, GFP_KERNEL);
if (bufs == NULL)
return -ENOMEM;
for (i = 0; i < nr_segs; ++i)
bufs[i] = iov[i].iov_base;
for (i = 0; i < from->nr_segs; ++i)
bufs[i] = from->iov[i].iov_base;
result = snd_pcm_lib_writev(substream, bufs, frames);
if (result > 0)
result = frames_to_bytes(runtime, result);
@ -3633,7 +3634,7 @@ const struct file_operations snd_pcm_f_ops[2] = {
{
.owner = THIS_MODULE,
.write = snd_pcm_write,
.aio_write = snd_pcm_aio_write,
.write_iter = snd_pcm_writev,
.open = snd_pcm_playback_open,
.release = snd_pcm_release,
.llseek = no_llseek,
@ -3647,7 +3648,7 @@ const struct file_operations snd_pcm_f_ops[2] = {
{
.owner = THIS_MODULE,
.read = snd_pcm_read,
.aio_read = snd_pcm_aio_read,
.read_iter = snd_pcm_readv,
.open = snd_pcm_capture_open,
.release = snd_pcm_release,
.llseek = no_llseek,