linux-kernel - [PATCH] f2fs: fix to use {freeze,thaw}_super in f2fs_resize

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Message-ID: <20200331010036.22551-1-yuchao0@huawei.com>
Date:   Tue, 31 Mar 2020 09:00:36 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <chao@...nel.org>,
        Chao Yu <yuchao0@...wei.com>
Subject: [PATCH] f2fs: fix to use {freeze,thaw}_super in f2fs_resize_fs()

freeze_bdev() only freeze block device, however resize_fs()
need to freeze all foreground fs operations to keep metadata
stable for later update, so use {freeze,thaw}_super() instead.

Fixes: 04f0b2eaa3b3 ("f2fs: ioctl for removing a range from F2FS")
Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 fs/f2fs/gc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 26248c8936db..acdc8b99b543 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1538,7 +1538,7 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
 		return -EINVAL;
 	}
 
-	freeze_bdev(sbi->sb->s_bdev);
+	freeze_super(sbi->sb);
 
 	shrunk_blocks = old_block_count - block_count;
 	secs = div_u64(shrunk_blocks, BLKS_PER_SEC(sbi));
@@ -1551,7 +1551,7 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
 		sbi->user_block_count -= shrunk_blocks;
 	spin_unlock(&sbi->stat_lock);
 	if (err) {
-		thaw_bdev(sbi->sb->s_bdev, sbi->sb);
+		thaw_super(sbi->sb);
 		return err;
 	}
 
@@ -1613,6 +1613,6 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
 	}
 	clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
 	mutex_unlock(&sbi->resize_mutex);
-	thaw_bdev(sbi->sb->s_bdev, sbi->sb);
+	thaw_super(sbi->sb);
 	return err;
 }
-- 
2.18.0.rc1