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fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek

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This converts everybody to handle SEEK_HOLE/SEEK_DATA properly.  In some cases
we just return -EINVAL, in others we do the normal generic thing, and in others
we're simply making sure that the properly due-dilligence is done.  For example
in NFS/CIFS we need to make sure the file size is update properly for the
SEEK_HOLE and SEEK_DATA case, but since it calls the generic llseek stuff itself
that is all we have to do.  Thanks,

Signed-off-by: Josef Bacik <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Josef Bacik 2011-07-18 13:21:38 -04:00 • committed by Al Viro
commit 06222e491e
7 changed files with 66 additions and 12 deletions
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4
fs/hpfs/dir.c
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@ -29,6 +29,10 @@ static loff_t hpfs_dir_lseek(struct file *filp, loff_t off, int whence)
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
struct super_block *s = i->i_sb;
/* Somebody else will have to figure out what to do here */
if (whence == SEEK_DATA || whence == SEEK_HOLE)
return -EINVAL;
hpfs_lock(s);
/*printk("dir lseek\n");*/