linux-ext4 - [PATCH] ext4: remove trivial nowait check for buffered write

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Message-Id: <1580529639-26328-1-git-send-email-qiwuchen55@gmail.com>
Date:   Sat,  1 Feb 2020 12:00:39 +0800
From:   qiwuchen55@...il.com
To:     tytso@....edu, adilger.kernel@...ger.ca, trivial@...nel.org
Cc:     linux-ext4@...r.kernel.org, chenqiwu <chenqiwu@...omi.com>
Subject: [PATCH] ext4: remove trivial nowait check for buffered write

From: chenqiwu <chenqiwu@...omi.com>

Remove trivial nowait check for ext4_buffered_write_iter(),
since buffered writes will return -EINVAL if IOCB_NOWAIT
passed in the follow-up function ext4_write_checks()->
ext4_generic_write_checks()->generic_write_checks().

Signed-off-by: chenqiwu <chenqiwu@...omi.com>
---
 fs/ext4/file.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 5f22588..18ae435 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -258,9 +258,6 @@ static ssize_t ext4_buffered_write_iter(struct kiocb *iocb,
 	ssize_t ret;
 	struct inode *inode = file_inode(iocb->ki_filp);
 
-	if (iocb->ki_flags & IOCB_NOWAIT)
-		return -EOPNOTSUPP;
-
 	inode_lock(inode);
 	ret = ext4_write_checks(iocb, from);
 	if (ret <= 0)
-- 
1.9.1