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| author |   Richard Weinberger <richard@nod.at> | 2016-06-14 10:12:15 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2016-07-29 23:32:42 +0200 |
| commit | fdf10ed710c0aa177e8dfcd84e65e4e5e8e0956b (patch) | |
| tree | dbe8f8cb94857d85987d82f4be8cca2b7483749e /drivers/mtd/ubi/ubi.h | |
| parent | ubi: Fix whitespace issue in count_fastmap_pebs() (diff) | |
| download | linux-dev-fdf10ed710c0aa177e8dfcd84e65e4e5e8e0956b.tar.xz linux-dev-fdf10ed710c0aa177e8dfcd84e65e4e5e8e0956b.zip | |
ubi: Rework Fastmap attach base code
Introduce a new list to the UBI attach information
object to be able to deal better with old and corrupted
Fastmap eraseblocks.
Also move more Fastmap specific code into fastmap.c.
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/ubi/ubi.h')
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index 91075b603d82..c8b90a866d27 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -703,6 +703,8 @@ 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) @@ -731,6 +733,7 @@ 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; @@ -911,7 +914,7 @@ 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 @@ -1120,4 +1123,27 @@ static inline bool ubi_is_fm_vol(int vol_id) 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__ */ |