[PATCH 3/4][RFC] btrfs: remove duplicated check from btrfs_fallocate

[Zheng Liu <gnehzuil.liu@xxxxxxxxx>]

From: Zheng Liu <wenqing.lz@xxxxxxxxxx>

Remove a sanity check from btrfs_fallocate because vfs has already checked it.

Reported-by: Guo Chao <yan@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
---
 fs/btrfs/file.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 9ab1bed..fd260a0 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1999,10 +1999,6 @@ static long btrfs_fallocate(struct file *file, int mode,
        alloc_start = offset & ~mask;
        alloc_end =  (offset + len + mask) & ~mask;
 
-       /* Make sure we aren't being give some crap mode */
-       if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
-               return -EOPNOTSUPP;
-
        if (mode & FALLOC_FL_PUNCH_HOLE)
                return btrfs_punch_hole(inode, offset, len);
 
-- 
1.7.12.rc2.18.g61b472e