From 23a8519b55235660f6fb7d6f394a912de9d23208 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Wed, 17 Nov 2010 20:46:19 -0500 Subject: Btrfs: fail if we try to use hole punch Btrfs 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 Signed-off-by: Al Viro --- fs/btrfs/inode.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs/btrfs/inode.c') diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index f870aefc59d..a3798a3aa0d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7115,6 +7115,10 @@ static long btrfs_fallocate(struct inode *inode, int mode, alloc_start = offset & ~mask; alloc_end = (offset + len + mask) & ~mask; + /* We only support the FALLOC_FL_KEEP_SIZE mode */ + if (mode && (mode != FALLOC_FL_KEEP_SIZE)) + return -EOPNOTSUPP; + /* * wait for ordered IO before we have any locks. We'll loop again * below with the locks held. -- cgit v1.2.3-70-g09d2