^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (C) 2017 Red Hat. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This file is released under the GPL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include "dm-cache-background-tracker.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) /*----------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define DM_MSG_PREFIX "dm-background-tracker"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct bt_work {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) struct rb_node node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct policy_work work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct background_tracker {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) unsigned max_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) atomic_t pending_promotes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) atomic_t pending_writebacks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) atomic_t pending_demotes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct list_head issued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct list_head queued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct rb_root pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct kmem_cache *work_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct background_tracker *btracker_create(unsigned max_work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct background_tracker *b = kmalloc(sizeof(*b), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) if (!b) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) DMERR("couldn't create background_tracker");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) b->max_work = max_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) atomic_set(&b->pending_promotes, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) atomic_set(&b->pending_writebacks, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) atomic_set(&b->pending_demotes, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) INIT_LIST_HEAD(&b->issued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) INIT_LIST_HEAD(&b->queued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) b->pending = RB_ROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) b->work_cache = KMEM_CACHE(bt_work, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (!b->work_cache) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) DMERR("couldn't create mempool for background work items");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) kfree(b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) b = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) EXPORT_SYMBOL_GPL(btracker_create);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) void btracker_destroy(struct background_tracker *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) kmem_cache_destroy(b->work_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) kfree(b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) EXPORT_SYMBOL_GPL(btracker_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int cmp_oblock(dm_oblock_t lhs, dm_oblock_t rhs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (from_oblock(lhs) < from_oblock(rhs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (from_oblock(rhs) < from_oblock(lhs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static bool __insert_pending(struct background_tracker *b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct bt_work *nw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int cmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct bt_work *w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct rb_node **new = &b->pending.rb_node, *parent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) while (*new) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) w = container_of(*new, struct bt_work, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) parent = *new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) cmp = cmp_oblock(w->work.oblock, nw->work.oblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (cmp < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) new = &((*new)->rb_left);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) else if (cmp > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) new = &((*new)->rb_right);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* already present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) rb_link_node(&nw->node, parent, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) rb_insert_color(&nw->node, &b->pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static struct bt_work *__find_pending(struct background_tracker *b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) dm_oblock_t oblock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int cmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct bt_work *w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct rb_node **new = &b->pending.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) while (*new) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) w = container_of(*new, struct bt_work, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) cmp = cmp_oblock(w->work.oblock, oblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (cmp < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) new = &((*new)->rb_left);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) else if (cmp > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) new = &((*new)->rb_right);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return *new ? w : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static void update_stats(struct background_tracker *b, struct policy_work *w, int delta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) switch (w->op) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) case POLICY_PROMOTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) atomic_add(delta, &b->pending_promotes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) case POLICY_DEMOTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) atomic_add(delta, &b->pending_demotes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) case POLICY_WRITEBACK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) atomic_add(delta, &b->pending_writebacks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) unsigned btracker_nr_writebacks_queued(struct background_tracker *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return atomic_read(&b->pending_writebacks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) EXPORT_SYMBOL_GPL(btracker_nr_writebacks_queued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned btracker_nr_demotions_queued(struct background_tracker *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return atomic_read(&b->pending_demotes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) EXPORT_SYMBOL_GPL(btracker_nr_demotions_queued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static bool max_work_reached(struct background_tracker *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return atomic_read(&b->pending_promotes) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) atomic_read(&b->pending_writebacks) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) atomic_read(&b->pending_demotes) >= b->max_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static struct bt_work *alloc_work(struct background_tracker *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (max_work_reached(b))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return kmem_cache_alloc(b->work_cache, GFP_NOWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) int btracker_queue(struct background_tracker *b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct policy_work *work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct policy_work **pwork)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct bt_work *w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (pwork)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *pwork = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) w = alloc_work(b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (!w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) memcpy(&w->work, work, sizeof(*work));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (!__insert_pending(b, w)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * There was a race, we'll just ignore this second
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * bit of work for the same oblock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) kmem_cache_free(b->work_cache, w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (pwork) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) *pwork = &w->work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) list_add(&w->list, &b->issued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) list_add(&w->list, &b->queued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) update_stats(b, &w->work, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) EXPORT_SYMBOL_GPL(btracker_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * Returns -ENODATA if there's no work.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int btracker_issue(struct background_tracker *b, struct policy_work **work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct bt_work *w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (list_empty(&b->queued))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) w = list_first_entry(&b->queued, struct bt_work, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) list_move(&w->list, &b->issued);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) *work = &w->work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) EXPORT_SYMBOL_GPL(btracker_issue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) void btracker_complete(struct background_tracker *b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct policy_work *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct bt_work *w = container_of(op, struct bt_work, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) update_stats(b, &w->work, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) rb_erase(&w->node, &b->pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) list_del(&w->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) kmem_cache_free(b->work_cache, w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) EXPORT_SYMBOL_GPL(btracker_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) bool btracker_promotion_already_present(struct background_tracker *b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) dm_oblock_t oblock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) return __find_pending(b, oblock) != NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) EXPORT_SYMBOL_GPL(btracker_promotion_already_present);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) /*----------------------------------------------------------------*/
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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