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coda: ftoc validity check integration 

This patch moves cfi check in coda_ftoc() instead of repeating it in the
wild.

  Module size
     text	   data	    bss	    dec	    hex	filename
    28297	   1040	    700	  30037	   7555	fs/coda/coda.ko.before
    28263	    980	    700	  29943	   74f7	fs/coda/coda.ko.after

Link: http://lkml.kernel.org/r/a2c27663ec4547018c92d71c63b1dff4650b6546.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Fabian Frederick 2019-07-16 16:29:09 -07:00 committed by Linus Torvalds
parent 7f6118ce95
commit 5bb44810f4
4 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
fs/coda/cnode.c
View File

@ -148,6 +148,16 @@ struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb)
return inode;
}
struct coda_file_info *coda_ftoc(struct file *file)
{
struct coda_file_info *cfi = file->private_data;
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
return cfi;
}
/* the CONTROL inode is made without asking attributes from Venus */
struct inode *coda_cnode_makectl(struct super_block *sb)
{

3
fs/coda/coda_fs_i.h
View File

@ -42,8 +42,6 @@ struct coda_file_info {
unsigned int cfi_mapcount; /* nr of times this file is mapped */
};
#define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data))
/* flags */
#define C_VATTR 0x1 /* Validity of vattr in inode */
#define C_FLUSH 0x2 /* used after a flush */
@ -54,6 +52,7 @@ struct inode *coda_cnode_make(struct CodaFid *, struct super_block *);
struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);
struct inode *coda_cnode_makectl(struct super_block *sb);
struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
struct coda_file_info *coda_ftoc(struct file *file);
void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);
#endif

6
fs/coda/dir.c
View File

@ -356,8 +356,7 @@ static int coda_venus_readdir(struct file *coda_file, struct dir_context *ctx)
ino_t ino;
int ret;
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;
cii = ITOC(file_inode(coda_file));
@ -426,8 +425,7 @@ static int coda_readdir(struct file *coda_file, struct dir_context *ctx)
struct file *host_file;
int ret;
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;
if (host_file->f_op->iterate || host_file->f_op->iterate_shared) {

17
fs/coda/file.c
View File

@ -37,9 +37,7 @@ static ssize_t
coda_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *coda_file = iocb->ki_filp;
struct coda_file_info *cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
struct coda_file_info *cfi = coda_ftoc(coda_file);
return vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos, 0);
}
@ -49,12 +47,10 @@ coda_file_write_iter(struct kiocb *iocb, struct iov_iter *to)
{
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 coda_file_info *cfi = coda_ftoc(coda_file);
struct file *host_file;
ssize_t ret;
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
host_file = cfi->cfi_container;
file_start_write(host_file);
inode_lock(coda_inode);
@ -105,8 +101,7 @@ coda_file_mmap(struct file *coda_file, struct vm_area_struct *vma)
struct coda_vm_ops *cvm_ops;
int ret;
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;
if (!host_file->f_op->mmap)
@ -208,8 +203,7 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
struct inode *host_inode;
int err;
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
cfi = coda_ftoc(coda_file);
err = venus_close(coda_inode->i_sb, coda_i2f(coda_inode),
coda_flags, coda_file->f_cred->fsuid);
@ -251,8 +245,7 @@ int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync)
return err;
inode_lock(coda_inode);
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;
err = vfs_fsync(host_file, datasync);