diff options
| -rw-r--r-- | fs/btrfs/inode.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index f870aefc59dd..a3798a3aa0d2 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. |