diff options
| -rw-r--r-- | drivers/mtd/ubi/wl.c | 61 |
1 files changed, 38 insertions, 23 deletions
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 2539a12140e7..9f57d6b7579b 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -496,13 +496,46 @@ out: #endif /** - * __wl_get_peb - get a physical eraseblock. + * wl_get_wle - get a mean wl entry to be used by wl_get_peb() or + * refill_wl_user_pool(). + * @ubi: UBI device description object + * + * This function returns a a wear leveling entry in case of success and + * NULL in case of failure. + */ +static struct ubi_wl_entry *wl_get_wle(struct ubi_device *ubi) +{ + struct ubi_wl_entry *e; + + e = find_mean_wl_entry(ubi, &ubi->free); + if (!e) { + ubi_err(ubi, "no free eraseblocks"); + return NULL; + } + + self_check_in_wl_tree(ubi, e, &ubi->free); + + /* + * Move the physical eraseblock to the protection queue where it will + * be protected from being moved for some time. + */ + rb_erase(&e->u.rb, &ubi->free); + ubi->free_count--; + dbg_wl("PEB %d EC %d", e->pnum, e->ec); + + return e; +} + +/** + * wl_get_peb - get a physical eraseblock. * @ubi: UBI device description object * * This function returns a physical eraseblock in case of success and a * negative error code in case of failure. + * It is the low level component of ubi_wl_get_peb() in the non-fastmap + * case. */ -static int __wl_get_peb(struct ubi_device *ubi) +static int wl_get_peb(struct ubi_device *ubi) { int err; struct ubi_wl_entry *e; @@ -521,27 +554,9 @@ retry: goto retry; } - e = find_mean_wl_entry(ubi, &ubi->free); - if (!e) { - ubi_err(ubi, "no free eraseblocks"); - return -ENOSPC; - } - - self_check_in_wl_tree(ubi, e, &ubi->free); - - /* - * Move the physical eraseblock to the protection queue where it will - * be protected from being moved for some time. - */ - rb_erase(&e->u.rb, &ubi->free); - ubi->free_count--; - dbg_wl("PEB %d EC %d", e->pnum, e->ec); -#ifndef CONFIG_MTD_UBI_FASTMAP - /* We have to enqueue e only if fastmap is disabled, - * is fastmap enabled prot_queue_add() will be called by - * ubi_wl_get_peb() after removing e from the pool. */ + e = wl_get_wle(ubi); prot_queue_add(ubi, e); -#endif + return e->pnum; } @@ -701,7 +716,7 @@ int ubi_wl_get_peb(struct ubi_device *ubi) int peb, err; spin_lock(&ubi->wl_lock); - peb = __wl_get_peb(ubi); + peb = wl_get_peb(ubi); spin_unlock(&ubi->wl_lock); if (peb < 0) |