[PATCH 6/6] Gfs2: fail if we try to use hole punch

[Josef Bacik <josef@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
 fs/gfs2/ops_inode.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 12cbea7..65cb5f6 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -1439,6 +1439,10 @@ 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;
 
-- 
1.6.6.1