diff options
Diffstat (limited to 'drivers/mtd/ubi/ubi.h')
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index de1ea2e4c37d..05d9ec66437c 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -699,6 +699,8 @@ struct ubi_ainf_volume { * @erase: list of physical eraseblocks which have to be erased * @alien: list of physical eraseblocks which should not be used by UBI (e.g., * those belonging to "preserve"-compatible internal volumes) + * @fastmap: list of physical eraseblocks which relate to fastmap (e.g., + * eraseblocks of the current and not yet erased old fastmap blocks) * @corr_peb_count: count of PEBs in the @corr list * @empty_peb_count: count of PEBs which are presumably empty (contain only * 0xFF bytes) @@ -709,6 +711,8 @@ struct ubi_ainf_volume { * @vols_found: number of volumes found * @highest_vol_id: highest volume ID * @is_empty: flag indicating whether the MTD device is empty or not + * @force_full_scan: flag indicating whether we need to do a full scan and drop + all existing Fastmap data structures * @min_ec: lowest erase counter value * @max_ec: highest erase counter value * @max_sqnum: highest sequence number value @@ -727,6 +731,7 @@ struct ubi_attach_info { struct list_head free; struct list_head erase; struct list_head alien; + struct list_head fastmap; int corr_peb_count; int empty_peb_count; int alien_peb_count; @@ -735,6 +740,7 @@ struct ubi_attach_info { int vols_found; int highest_vol_id; int is_empty; + int force_full_scan; int min_ec; int max_ec; unsigned long long max_sqnum; @@ -907,7 +913,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, size_t ubi_calc_fm_size(struct ubi_device *ubi); int ubi_update_fastmap(struct ubi_device *ubi); int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, - int fm_anchor); + struct ubi_attach_info *scan_ai); #else static inline int ubi_update_fastmap(struct ubi_device *ubi) { return 0; } #endif @@ -1101,4 +1107,42 @@ static inline int idx2vol_id(const struct ubi_device *ubi, int idx) return idx; } +/** + * ubi_is_fm_vol - check whether a volume ID is a Fastmap volume. + * @vol_id: volume ID + */ +static inline bool ubi_is_fm_vol(int vol_id) +{ + switch (vol_id) { + case UBI_FM_SB_VOLUME_ID: + case UBI_FM_DATA_VOLUME_ID: + return true; + } + + return false; +} + +/** + * ubi_find_fm_block - check whether a PEB is part of the current Fastmap. + * @ubi: UBI device description object + * @pnum: physical eraseblock to look for + * + * This function returns a wear leveling object if @pnum relates to the current + * fastmap, @NULL otherwise. + */ +static inline struct ubi_wl_entry *ubi_find_fm_block(const struct ubi_device *ubi, + int pnum) +{ + int i; + + if (ubi->fm) { + for (i = 0; i < ubi->fm->used_blocks; i++) { + if (ubi->fm->e[i]->pnum == pnum) + return ubi->fm->e[i]; + } + } + + return NULL; +} + #endif /* !__UBI_UBI_H__ */ |