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From: Baokun Li <libaokun1@huawei.com>
To: <linux-ext4@vger.kernel.org>
CC: <tytso@mit.edu>, <adilger.kernel@dilger.ca>, <jack@suse.cz>,
	<ritesh.list@gmail.com>, <ojaswin@linux.ibm.com>, <adobriyan@gmail.com>,
	<linux-kernel@vger.kernel.org>, <yi.zhang@huawei.com>,
	<yangerkun@huawei.com>, <libaokun1@huawei.com>
Subject: [PATCH v3 9/9] ext4: clean up s_mb_rb_lock to fix build warnings with C=1
Date: Thu, 14 Mar 2024 22:09:06 +0800
Message-ID: <20240314140906.3064072-10-libaokun1@huawei.com>
In-Reply-To: <20240314140906.3064072-1-libaokun1@huawei.com>
References: <20240314140906.3064072-1-libaokun1@huawei.com>
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Running sparse (make C=1) on mballoc.c we get the following warning:

 fs/ext4/mballoc.c:3194:13: warning: context imbalance in
  'ext4_mb_seq_structs_summary_start' - wrong count at exit

This is because __acquires(&EXT4_SB(sb)->s_mb_rb_lock) was called in
ext4_mb_seq_structs_summary_start(), but s_mb_rb_lock was removed in commit
83e80a6e3543 ("ext4: use buckets for cr 1 block scan instead of rbtree"),
so remove the __acquires to silence the warning.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
---
 fs/ext4/mballoc.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 48afe5aa228c..b3d616f055b0 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3190,7 +3190,6 @@ int ext4_seq_mb_stats_show(struct seq_file *seq, void *offset)
 }
 
 static void *ext4_mb_seq_structs_summary_start(struct seq_file *seq, loff_t *pos)
-__acquires(&EXT4_SB(sb)->s_mb_rb_lock)
 {
 	struct super_block *sb = pde_data(file_inode(seq->file));
 	unsigned long position;
-- 
2.31.1