[PATCH 3/3] btrfs: remove redundant nowait check for buffered_write

[Lu Fengqi <lufq.fnst@xxxxxxxxxxxxxx>]

The generic_write_checks will check the combination of IOCB_NOWAIT and
!IOCB_DIRECT.

Signed-off-by: Lu Fengqi <lufq.fnst@xxxxxxxxxxxxxx>
---
 fs/btrfs/file.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 3835bb8c146d..190db9a685a2 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1889,10 +1889,6 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb,
 	loff_t oldsize;
 	int clean_page = 0;
 
-	if (!(iocb->ki_flags & IOCB_DIRECT) &&
-	    (iocb->ki_flags & IOCB_NOWAIT))
-		return -EOPNOTSUPP;
-
 	if (!inode_trylock(inode)) {
 		if (iocb->ki_flags & IOCB_NOWAIT)
 			return -EAGAIN;
-- 
2.19.2