linux-kernel - [PATCH] zonefs: remove redundant null bio check

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Message-Id: <1625063616-8467-1-git-send-email-xianting_tian@126.com>
Date:   Wed, 30 Jun 2021 10:33:36 -0400
From:   Xianting Tian <xianting_tian@....com>
To:     damien.lemoal@....com, naohiro.aota@....com, jth@...nel.org
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xianting Tian <xianting.tian@...ux.alibaba.com>
Subject: [PATCH] zonefs: remove redundant null bio check

From: Xianting Tian <xianting.tian@...ux.alibaba.com>

bio_alloc() with __GFP_DIRECT_RECLAIM, which is included in
GFP_NOFS, never fails, see comments in bio_alloc_bioset().

Signed-off-by: Xianting Tian <xianting.tian@...ux.alibaba.com>
---
 fs/zonefs/super.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index cd145d3..d6d08da 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -705,9 +705,6 @@ static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
 		return 0;
 
 	bio = bio_alloc(GFP_NOFS, nr_pages);
-	if (!bio)
-		return -ENOMEM;
-
 	bio_set_dev(bio, bdev);
 	bio->bi_iter.bi_sector = zi->i_zsector;
 	bio->bi_write_hint = iocb->ki_hint;
-- 
1.8.3.1