Messages in this thread Patch in this message | | | From | Richard Weinberger <> | Subject | [PATCH 10/11] UBI: Fastmap: Disable fastmap per default | Date | Fri, 29 Jun 2012 17:14:28 +0200 |
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Signed-off-by: Richard Weinberger <richard@nod.at> --- drivers/mtd/ubi/attach.c | 2 +- drivers/mtd/ubi/build.c | 1 + drivers/mtd/ubi/fastmap.c | 2 +- drivers/mtd/ubi/ubi.h | 2 ++ drivers/mtd/ubi/wl.c | 5 +++-- 5 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c index a343a41..c55ad0f 100644 --- a/drivers/mtd/ubi/attach.c +++ b/drivers/mtd/ubi/attach.c @@ -1394,7 +1394,7 @@ int ubi_attach(struct ubi_device *ubi, int force_scan) if (!ai) return -ENOMEM; - if (force_scan) + if (force_scan || ubi->fm_disabled) err = scan_all(ubi, ai, 0); else { err = scan_fast(ubi, ai); diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 7094550..7b5dc5d 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -899,6 +899,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) ubi->fm_pool.max_size = UBI_FM_MIN_POOL_SIZE; ubi->fm_wl_pool.max_size = UBI_FM_WL_POOL_SIZE; + ubi->fm_disabled = 1; ubi_msg("default fastmap pool size: %d", ubi->fm_pool.max_size); ubi_msg("default fastmap WL pool size: %d", ubi->fm_wl_pool.max_size); diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index 6276039..0c9466d 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -1392,7 +1392,7 @@ int ubi_update_fastmap(struct ubi_device *ubi) ubi_refill_pools(ubi); - if (ubi->ro_mode) { + if (ubi->ro_mode || ubi->fm_disabled) { mutex_unlock(&ubi->fm_mutex); return 0; } diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index fef9e92..9f766ff 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -386,6 +386,7 @@ struct ubi_wl_entry; * @ltree: the lock tree * @alc_mutex: serializes "atomic LEB change" operations * + * @fm_disabled: non-zero if fastmap is disabled (default) * @fm: in-memory data structure of the currently used fastmap * @fm_pool: in-memory data structure of the fastmap pool * @fm_wl_pool: in-memory data structure of the fastmap pool used by the WL @@ -486,6 +487,7 @@ struct ubi_device { struct mutex alc_mutex; /* Fastmap stuff */ + int fm_disabled; struct ubi_fastmap_layout *fm; struct ubi_fm_pool fm_pool; struct ubi_fm_pool fm_wl_pool; diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 28385d2..6c69017 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -376,7 +376,7 @@ static struct ubi_wl_entry *find_wl_entry(struct ubi_device *ubi, /* If no fastmap has been written and this WL entry can be used * as anchor PEB, hold it back and return the second best WL entry * such that fastmap can use the anchor PEB later. */ - if (!ubi->fm && e->pnum < UBI_FM_MAX_START) + if (!ubi->fm_disabled && !ubi->fm && e->pnum < UBI_FM_MAX_START) return prev_e; return e; @@ -405,7 +405,8 @@ static struct ubi_wl_entry *find_mean_wl_entry(struct ubi_device *ubi, /* If no fastmap has been written and this WL entry can be used * as anchor PEB, hold it back and return the second best * WL entry such that fastmap can use the anchor PEB later. */ - if (e && !ubi->fm && e->pnum < UBI_FM_MAX_START) + if (e && !ubi->fm_disabled && !ubi->fm && + e->pnum < UBI_FM_MAX_START) e = rb_entry(rb_next(root->rb_node), struct ubi_wl_entry, u.rb); } else -- 1.7.6.5
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