diff options
| author | Tetsuhiro Kohada <kohada.t2@gmail.com> | 2020-07-31 14:58:26 +0900 |
|---|---|---|
| committer | Namjae Jeon <namjae.jeon@samsung.com> | 2020-08-12 08:31:13 +0900 |
| commit | 7018ec68f08249de17cb131b324d5a48e89ed898 (patch) | |
| tree | 357bdc1c10e5e03d3c6bd992f6087ccd0f2eaeb8 /fs/exfat/exfat_fs.h | |
| parent | 4dc7d35e09ba78aa0a3bcaa9fad1c19952e018a7 (diff) | |
exfat: retain 'VolumeFlags' properly
MediaFailure and VolumeDirty should be retained if these are set before
mounting.
In '3.1.13.3 Media Failure Field' of exfat specification describe:
If, upon mounting a volume, the value of this field is 1,
implementations which scan the entire volume for media failures and
record all failures as "bad" clusters in the FAT (or otherwise resolve
media failures) may clear the value of this field to 0.
Therefore, We should not clear MediaFailure without scanning volume.
In '8.1 Recommended Write Ordering' of exfat specification describe:
Clear the value of the VolumeDirty field to 0, if its value prior to
the first step was 0.
Therefore, We should not clear VolumeDirty after mounting.
Also rename ERR_MEDIUM to MEDIA_FAILURE.
Signed-off-by: Tetsuhiro Kohada <kohada.t2@gmail.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Diffstat (limited to 'fs/exfat/exfat_fs.h')
| -rw-r--r-- | fs/exfat/exfat_fs.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h index cb51d6e83199..95d717f8620c 100644 --- a/fs/exfat/exfat_fs.h +++ b/fs/exfat/exfat_fs.h @@ -224,7 +224,8 @@ struct exfat_sb_info { unsigned int num_FAT_sectors; /* num of FAT sectors */ unsigned int root_dir; /* root dir cluster */ unsigned int dentries_per_clu; /* num of dentries per cluster */ - unsigned int vol_flag; /* volume dirty flag */ + unsigned int vol_flags; /* volume flags */ + unsigned int vol_flags_persistent; /* volume flags to retain */ struct buffer_head *boot_bh; /* buffer_head of BOOT sector */ unsigned int map_clu; /* allocation bitmap start cluster */ @@ -380,7 +381,8 @@ static inline int exfat_sector_to_cluster(struct exfat_sb_info *sbi, } /* super.c */ -int exfat_set_vol_flags(struct super_block *sb, unsigned short new_flag); +int exfat_set_volume_dirty(struct super_block *sb); +int exfat_clear_volume_dirty(struct super_block *sb); /* fatent.c */ #define exfat_get_next_cluster(sb, pclu) exfat_ent_get(sb, *(pclu), pclu) |