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 <shengyo...@huawei.com> --- fs/f2fs/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 8173ae688814..7def48cb2b22 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2334,7 +2334,7 @@ int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) } /* write back-up superblock first */ - bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1); + bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); if (!bh) return -EIO; err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); @@ -2345,7 +2345,7 @@ int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) return err; /* write current valid superblock */ - bh = sb_getblk(sbi->sb, sbi->valid_super_block); + bh = sb_bread(sbi->sb, sbi->valid_super_block); if (!bh) return -EIO; err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); -- 2.11.0 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel