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Gfs2: fail if we try to use hole punch

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Gfs2 doesn't have the ability to punch holes yet, so make sure we return
EOPNOTSUPP if we try to use hole punching through fallocate.  This support can
be added later.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Josef Bacik 2010-11-17 20:46:20 -05:00 committed by Al Viro
parent 23a8519b55
commit 9ecf639a96
1 changed files with 4 additions and 0 deletions
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4
fs/gfs2/ops_inode.c
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@ -1425,6 +1425,10 @@ static long gfs2_fallocate(struct inode *inode, int mode, loff_t offset,
loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift;
next = (next + 1) << sdp->sd_sb.sb_bsize_shift;
/* We only support the FALLOC_FL_KEEP_SIZE mode */
if (mode && (mode != FALLOC_FL_KEEP_SIZE))
return -EOPNOTSUPP;
offset = (offset >> sdp->sd_sb.sb_bsize_shift) <<
sdp->sd_sb.sb_bsize_shift;