f2fs: fix potential corruption in area before F2FS_SUPER_OFFSET

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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>

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Sheng Yong 2018-01-29 19:13:15 +08:00 • committed by Jaegeuk Kim

parent bdbc90fa55

commit 0964fc1a82

1 changed files with 2 additions and 3 deletions

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fs/f2fs/super.c

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