diff options
| author | Richard Weinberger <richard@nod.at> | 2018-05-28 23:04:33 +0300 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2018-06-07 16:53:16 +0300 |
| commit | 34653fd8c46e771585fce5975e4243f8fd401914 (patch) | |
| tree | 2e0c2d723829de99308aa9d9a88ad7449ed14d9c /drivers/mtd/ubi/ubi.h | |
| parent | 781932375ffc6411713ee0926ccae8596ed0261c (diff) | |
| download | linux-34653fd8c46e771585fce5975e4243f8fd401914.tar.xz | |
ubi: fastmap: Check each mapping only once
Maintain a bitmap to keep track of which LEB->PEB mapping
was checked already.
That way we have to read back VID headers only once.
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/ubi/ubi.h')
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index 5fe62653995e..f5ba97c46160 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -334,6 +334,9 @@ struct ubi_eba_leb_desc { * @changing_leb: %1 if the atomic LEB change ioctl command is in progress * @direct_writes: %1 if direct writes are enabled for this volume * + * @checkmap: bitmap to remember which PEB->LEB mappings got checked, + * protected by UBI LEB lock tree. + * * The @corrupted field indicates that the volume's contents is corrupted. * Since UBI protects only static volumes, this field is not relevant to * dynamic volumes - it is user's responsibility to assure their data @@ -377,6 +380,10 @@ struct ubi_volume { unsigned int updating:1; unsigned int changing_leb:1; unsigned int direct_writes:1; + +#ifdef CONFIG_MTD_UBI_FASTMAP + unsigned long *checkmap; +#endif }; /** @@ -965,8 +972,12 @@ 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, struct ubi_attach_info *scan_ai); +int ubi_fastmap_init_checkmap(struct ubi_volume *vol, int leb_count); +void ubi_fastmap_destroy_checkmap(struct ubi_volume *vol); #else static inline int ubi_update_fastmap(struct ubi_device *ubi) { return 0; } +int static inline ubi_fastmap_init_checkmap(struct ubi_volume *vol, int leb_count) { return 0; } +static inline void ubi_fastmap_destroy_checkmap(struct ubi_volume *vol) {} #endif /* block.c */ |