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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  ocfs2: ->fallocate() support
This commit is contained in:
Linus Torvalds 2007-07-19 14:16:44 -07:00
parent ff86303e30 385820a38d
commit f745bb1c73
1 changed files with 59 additions and 18 deletions
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77
fs/ocfs2/file.c
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@ -34,6 +34,7 @@
#include <linux/splice.h>
#include <linux/mount.h>
#include <linux/writeback.h>
#include <linux/falloc.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
@ -1504,30 +1505,19 @@ out:
/*
* Parts of this function taken from xfs_change_file_space()
*/
int ocfs2_change_file_space(struct file *file, unsigned int cmd,
struct ocfs2_space_resv *sr)
static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
loff_t f_pos, unsigned int cmd,
struct ocfs2_space_resv *sr,
int change_size)
{
int ret;
s64 llen;
struct inode *inode = file->f_path.dentry->d_inode;
loff_t size;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct buffer_head *di_bh = NULL;
handle_t *handle;
unsigned long long max_off = ocfs2_max_file_offset(inode->i_sb->s_blocksize_bits);
if ((cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) &&
!ocfs2_writes_unwritten_extents(osb))
return -ENOTTY;
else if ((cmd == OCFS2_IOC_UNRESVSP || cmd == OCFS2_IOC_UNRESVSP64) &&
!ocfs2_sparse_alloc(osb))
return -ENOTTY;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
if (!(file->f_mode & FMODE_WRITE))
return -EBADF;
if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
return -EROFS;
@ -1557,7 +1547,7 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd,
case 0: /*SEEK_SET*/
break;
case 1: /*SEEK_CUR*/
sr->l_start += file->f_pos;
sr->l_start += f_pos;
break;
case 2: /*SEEK_END*/
sr->l_start += i_size_read(inode);
@ -1577,6 +1567,7 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd,
ret = -EINVAL;
goto out_meta_unlock;
}
size = sr->l_start + sr->l_len;
if (cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) {
if (sr->l_len <= 0) {
@ -1585,7 +1576,7 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd,
}
}
if (should_remove_suid(file->f_path.dentry)) {
if (file && should_remove_suid(file->f_path.dentry)) {
ret = __ocfs2_write_remove_suid(inode, di_bh);
if (ret) {
mlog_errno(ret);
@ -1628,6 +1619,9 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd,
goto out_meta_unlock;
}
if (change_size && i_size_read(inode) < size)
i_size_write(inode, size);
inode->i_ctime = inode->i_mtime = CURRENT_TIME;
ret = ocfs2_mark_inode_dirty(handle, inode, di_bh);
if (ret < 0)
@ -1646,6 +1640,52 @@ out:
return ret;
}
int ocfs2_change_file_space(struct file *file, unsigned int cmd,
struct ocfs2_space_resv *sr)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);;
if ((cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) &&
!ocfs2_writes_unwritten_extents(osb))
return -ENOTTY;
else if ((cmd == OCFS2_IOC_UNRESVSP || cmd == OCFS2_IOC_UNRESVSP64) &&
!ocfs2_sparse_alloc(osb))
return -ENOTTY;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
if (!(file->f_mode & FMODE_WRITE))
return -EBADF;
return __ocfs2_change_file_space(file, inode, file->f_pos, cmd, sr, 0);
}
static long ocfs2_fallocate(struct inode *inode, int mode, loff_t offset,
loff_t len)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_space_resv sr;
int change_size = 1;
if (!ocfs2_writes_unwritten_extents(osb))
return -EOPNOTSUPP;
if (S_ISDIR(inode->i_mode))
return -ENODEV;
if (mode & FALLOC_FL_KEEP_SIZE)
change_size = 0;
sr.l_whence = 0;
sr.l_start = (s64)offset;
sr.l_len = (s64)len;
return __ocfs2_change_file_space(NULL, inode, offset,
OCFS2_IOC_RESVSP64, &sr, change_size);
}
static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
loff_t *ppos,
size_t count,
@ -2312,6 +2352,7 @@ const struct inode_operations ocfs2_file_iops = {
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
.fallocate = ocfs2_fallocate,
};
const struct inode_operations ocfs2_special_file_iops = {