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Message-Id: <1449528805-89661-3-git-send-email-jaegeuk@kernel.org>
Date: Mon, 7 Dec 2015 14:53:25 -0800
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 3/3] f2fs: use lock_buffer when changing superblock
When modifying sb contents, we need to use lock its buffer.
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
fs/f2fs/file.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index a018ed3..a16dfe9 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1591,7 +1591,9 @@ static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
return err;
/* update superblock with uuid */
+ lock_buffer(sbi->raw_super_buf);
generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
+ unlock_buffer(sbi->raw_super_buf);
err = f2fs_commit_super(sbi, false);
--
2.4.9 (Apple Git-60)
--
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