When modifying sb contents, we need to use lock its buffer.
Signed-off-by: Jaegeuk Kim <[email protected]>
---
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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