From: Chao Yu <yuch...@huawei.com> If sb checksum is not enabled, and cp pack is valid due to no crc inconsistence, let's try to recover cp_payload based on cp_pack_start_sum in cp pack.
Signed-off-by: Chao Yu <yuch...@huawei.com> --- fsck/f2fs.h | 5 +++++ fsck/mount.c | 10 +++++++--- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/fsck/f2fs.h b/fsck/f2fs.h index d216444..0d0d5e2 100644 --- a/fsck/f2fs.h +++ b/fsck/f2fs.h @@ -259,6 +259,11 @@ static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) return 0; } +static inline block_t __cp_payload(struct f2fs_sb_info *sbi) +{ + return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); +} + static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) { struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); diff --git a/fsck/mount.c b/fsck/mount.c index 71af6b2..8a7d6e4 100644 --- a/fsck/mount.c +++ b/fsck/mount.c @@ -945,12 +945,16 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi) } cp_pack_start_sum = __start_sum_addr(sbi); - cp_payload = get_sb(cp_payload); + cp_payload = __cp_payload(sbi); if (cp_pack_start_sum < cp_payload + 1 || cp_pack_start_sum > blocks_per_seg - 1 - NR_CURSEG_TYPE) { - MSG(0, "\tWrong cp_pack_start_sum(%u)\n", cp_pack_start_sum); - return 1; + MSG(0, "\tWrong cp_pack_start_sum(%u) or cp_payload(%u)\n", + cp_pack_start_sum, cp_payload); + if ((get_sb(feature) & F2FS_FEATURE_SB_CHKSUM)) + return 1; + set_sb(cp_payload, cp_pack_start_sum - 1); + update_superblock(sb, SB_ALL); } return 0; -- 2.18.0 ------------------------------------------------------------------------------ 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