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| author |   Chao Yu <yuchao0@huawei.com> | 2017-01-07 18:51:01 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2017-02-22 18:48:49 -0800 |
| commit | 355e78913c0d57492076d545b6f44b94fec2bf6b (patch) | |
| tree | c5bc399e8028a25db606d67c92ceb1e1685bb037 /fs/f2fs/segment.h | |
| parent | f2fs: introduce FI_ATOMIC_COMMIT (diff) | |
| download | linux-dev-355e78913c0d57492076d545b6f44b94fec2bf6b.tar.xz linux-dev-355e78913c0d57492076d545b6f44b94fec2bf6b.zip | |
f2fs: check in-memory block bitmap
This patch adds a mirror for valid block bitmap, and use it to detect
in-memory bitmap corruption which may be caused by bit-transition of
cache or memory overflow.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.h')
| -rw-r--r-- | fs/f2fs/segment.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 08f1455c812c..9af95194db06 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -164,6 +164,9 @@ struct seg_entry { unsigned int ckpt_valid_blocks:10; /* # of valid blocks last cp */ unsigned int padding:6; /* padding */ unsigned char *cur_valid_map; /* validity bitmap of blocks */ +#ifdef CONFIG_F2FS_CHECK_FS + unsigned char *cur_valid_map_mir; /* mirror of current valid bitmap */ +#endif /* * # of valid blocks and the validity bitmap stored in the the last * checkpoint pack. This information is used by the SSR mode. @@ -320,6 +323,9 @@ static inline void seg_info_from_raw_sit(struct seg_entry *se, se->ckpt_valid_blocks = GET_SIT_VBLOCKS(rs); memcpy(se->cur_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE); memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE); +#ifdef CONFIG_F2FS_CHECK_FS + memcpy(se->cur_valid_map_mir, rs->valid_map, SIT_VBLOCK_MAP_SIZE); +#endif se->type = GET_SIT_TYPE(rs); se->mtime = le64_to_cpu(rs->mtime); } |