drivers/mtd/ubi/wl.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef UBI_WL_H
   3 #define UBI_WL_H
   4 #ifdef CONFIG_MTD_UBI_FASTMAP
   5 static void update_fastmap_work_fn(struct work_struct *wrk);
   6 static struct ubi_wl_entry *find_anchor_wl_entry(struct rb_root *root);
   7 static struct ubi_wl_entry *get_peb_for_wl(struct ubi_device *ubi);
   8 static struct ubi_wl_entry *next_peb_for_wl(struct ubi_device *ubi,
   9                                             bool need_fill);
  10 static bool need_wear_leveling(struct ubi_device *ubi);
  11 static void ubi_fastmap_close(struct ubi_device *ubi);
  12 static inline void ubi_fastmap_init(struct ubi_device *ubi, int *count)
  13 {
  14         if (ubi->fm_disabled)
  15                 ubi->fm_pool_rsv_cnt = 0;
  16         /* Reserve enough LEBs to store two fastmaps and to fill pools. */
  17         *count += (ubi->fm_size / ubi->leb_size) * 2 + ubi->fm_pool_rsv_cnt;
  18         INIT_WORK(&ubi->fm_work, update_fastmap_work_fn);
  19 }
  20 static struct ubi_wl_entry *may_reserve_for_fm(struct ubi_device *ubi,
  21                                                struct ubi_wl_entry *e,
  22                                                struct rb_root *root);
  23 #else /* !CONFIG_MTD_UBI_FASTMAP */
  24 static struct ubi_wl_entry *get_peb_for_wl(struct ubi_device *ubi);
  25 static inline void ubi_fastmap_close(struct ubi_device *ubi) { }
  26 static inline void ubi_fastmap_init(struct ubi_device *ubi, int *count) { }
  27 static struct ubi_wl_entry *may_reserve_for_fm(struct ubi_device *ubi,
  28                                                struct ubi_wl_entry *e,
  29                                                struct rb_root *root) {
  30         return e;
  31 }
  32 #endif /* CONFIG_MTD_UBI_FASTMAP */
  33 #endif /* UBI_WL_H */