tree e75046d5cd918450eeeab73162eb4d3a7a1b54e2
parent 9d9cb0ef73f965ddceccc1fedb95cab620cb69b4
author Sheng Yong <shengyong1@huawei.com> 1517224395 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1523185248 -0700

f2fs: fix potential corruption in area before F2FS_SUPER_OFFSET

sb_getblk does not guarantee the buffer head is uptodate. If bh is not
uptodate, the data (may be used as boot code) in area before
F2FS_SUPER_OFFSET may get corrupted when super block is committed.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>