linux-kernel - [PATCH 12/21] ext4: remove unnecessary check in ext4_mb_new

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Message-Id: <20230209194825.511043-13-shikemeng@huaweicloud.com>
Date:   Fri, 10 Feb 2023 03:48:16 +0800
From:   Kemeng Shi <shikemeng@...weicloud.com>
To:     tytso@....edu, adilger.kernel@...ger.ca, jack@...e.cz
Cc:     linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 12/21] ext4: remove unnecessary check in ext4_mb_new_blocks

1. remove unnecessary ac check:
We always go to out tag before ac is successfully allocated, then we can
move out tag after free of ac and remove NULL check of ac.

2. remove unnecessary *errp check:
We always go to errout tag if *errp is non-zero, then we can move errout
tag into error handle if *errp is non-zero.

Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>
---
 fs/ext4/mballoc.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 74da24c9bf14..bdabe0d81d4a 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -5641,16 +5641,15 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
 		*errp = -ENOSPC;
 	}
 
-errout:
 	if (*errp) {
+errout:
 		ac->ac_b_ex.fe_len = 0;
 		ar->len = 0;
 		ext4_mb_show_ac(ac);
 	}
 	ext4_mb_release_context(ac);
+	kmem_cache_free(ext4_ac_cachep, ac);
 out:
-	if (ac)
-		kmem_cache_free(ext4_ac_cachep, ac);
 	if (inquota && ar->len < inquota)
 		dquot_free_block(ar->inode, EXT4_C2B(sbi, inquota - ar->len));
 	if (!ar->len) {
-- 
2.30.0