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-rw-r--r--drivers/md/bcache/bcache.h8
-rw-r--r--drivers/md/bcache/bset.c63
-rw-r--r--drivers/md/bcache/btree.c29
-rw-r--r--drivers/md/bcache/closure.c6
-rw-r--r--drivers/md/bcache/io.c2
-rw-r--r--drivers/md/bcache/journal.c42
-rw-r--r--drivers/md/bcache/request.c23
-rw-r--r--drivers/md/bcache/super.c31
-rw-r--r--drivers/md/bcache/sysfs.c8
-rw-r--r--drivers/md/bcache/util.c11
-rw-r--r--drivers/md/bcache/util.h12
-rw-r--r--drivers/md/bcache/writeback.c42
12 files changed, 201 insertions, 76 deletions
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index d3e15b42a4ab..6bc016eabdc9 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -437,6 +437,7 @@ struct bcache_device {
/* If nonzero, we're detaching/unregistering from cache set */
atomic_t detaching;
+ int flush_done;
atomic_long_t sectors_dirty;
unsigned long sectors_dirty_gc;
@@ -498,7 +499,7 @@ struct cached_dev {
*/
atomic_t has_dirty;
- struct ratelimit writeback_rate;
+ struct bch_ratelimit writeback_rate;
struct delayed_work writeback_rate_update;
/*
@@ -507,10 +508,9 @@ struct cached_dev {
*/
sector_t last_read;
- /* Number of writeback bios in flight */
- atomic_t in_flight;
+ /* Limit number of writeback bios in flight */
+ struct semaphore in_flight;
struct closure_with_timer writeback;
- struct closure_waitlist writeback_wait;
struct keybuf writeback_keys;
diff --git a/drivers/md/bcache/bset.c b/drivers/md/bcache/bset.c
index cb4578a327b9..1b27cbd822e1 100644
--- a/drivers/md/bcache/bset.c
+++ b/drivers/md/bcache/bset.c
@@ -918,29 +918,59 @@ struct bkey *bch_next_recurse_key(struct btree *b, struct bkey *search)
/* Mergesort */
-static void btree_sort_fixup(struct btree_iter *iter)
+static void sort_key_next(struct btree_iter *iter,
+ struct btree_iter_set *i)
+{
+ i->k = bkey_next(i->k);
+
+ if (i->k == i->end)
+ *i = iter->data[--iter->used];
+}
+
+static struct bkey *btree_sort_fixup(struct btree_iter *iter, struct bkey *tmp)
{
while (iter->used > 1) {
struct btree_iter_set *top = iter->data, *i = top + 1;
- struct bkey *k;
if (iter->used > 2 &&
btree_iter_cmp(i[0], i[1]))
i++;
- for (k = i->k;
- k != i->end && bkey_cmp(top->k, &START_KEY(k)) > 0;
- k = bkey_next(k))
- if (top->k > i->k)
- __bch_cut_front(top->k, k);
- else if (KEY_SIZE(k))
- bch_cut_back(&START_KEY(k), top->k);
-
- if (top->k < i->k || k == i->k)
+ if (bkey_cmp(top->k, &START_KEY(i->k)) <= 0)
break;
- heap_sift(iter, i - top, btree_iter_cmp);
+ if (!KEY_SIZE(i->k)) {
+ sort_key_next(iter, i);
+ heap_sift(iter, i - top, btree_iter_cmp);
+ continue;
+ }
+
+ if (top->k > i->k) {
+ if (bkey_cmp(top->k, i->k) >= 0)
+ sort_key_next(iter, i);
+ else
+ bch_cut_front(top->k, i->k);
+
+ heap_sift(iter, i - top, btree_iter_cmp);
+ } else {
+ /* can't happen because of comparison func */
+ BUG_ON(!bkey_cmp(&START_KEY(top->k), &START_KEY(i->k)));
+
+ if (bkey_cmp(i->k, top->k) < 0) {
+ bkey_copy(tmp, top->k);
+
+ bch_cut_back(&START_KEY(i->k), tmp);
+ bch_cut_front(i->k, top->k);
+ heap_sift(iter, 0, btree_iter_cmp);
+
+ return tmp;
+ } else {
+ bch_cut_back(&START_KEY(i->k), top->k);
+ }
+ }
}
+
+ return NULL;
}
static void btree_mergesort(struct btree *b, struct bset *out,
@@ -948,15 +978,20 @@ static void btree_mergesort(struct btree *b, struct bset *out,
bool fixup, bool remove_stale)
{
struct bkey *k, *last = NULL;
+ BKEY_PADDED(k) tmp;
bool (*bad)(struct btree *, const struct bkey *) = remove_stale
? bch_ptr_bad
: bch_ptr_invalid;
while (!btree_iter_end(iter)) {
if (fixup && !b->level)
- btree_sort_fixup(iter);
+ k = btree_sort_fixup(iter, &tmp.k);
+ else
+ k = NULL;
+
+ if (!k)
+ k = bch_btree_iter_next(iter);
- k = bch_btree_iter_next(iter);
if (bad(b, k))
continue;
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 7a5658f04e62..7d3deab11fce 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -326,10 +326,25 @@ static void do_btree_write(struct btree *b)
i->csum = btree_csum_set(b, i);
btree_bio_init(b);
- b->bio->bi_rw = REQ_META|WRITE_SYNC;
+ b->bio->bi_rw = REQ_META|WRITE_SYNC|REQ_FUA;
b->bio->bi_size = set_blocks(i, b->c) * block_bytes(b->c);
bch_bio_map(b->bio, i);
+ /*
+ * If we're appending to a leaf node, we don't technically need FUA -
+ * this write just needs to be persisted before the next journal write,
+ * which will be marked FLUSH|FUA.
+ *
+ * Similarly if we're writing a new btree root - the pointer is going to
+ * be in the next journal entry.
+ *
+ * But if we're writing a new btree node (that isn't a root) or
+ * appending to a non leaf btree node, we need either FUA or a flush
+ * when we write the parent with the new pointer. FUA is cheaper than a
+ * flush, and writes appending to leaf nodes aren't blocking anything so
+ * just make all btree node writes FUA to keep things sane.
+ */
+
bkey_copy(&k.key, &b->key);
SET_PTR_OFFSET(&k.key, 0, PTR_OFFSET(&k.key, 0) + bset_offset(b, i));
@@ -618,7 +633,7 @@ static int bch_mca_shrink(struct shrinker *shrink, struct shrink_control *sc)
return mca_can_free(c) * c->btree_pages;
/* Return -1 if we can't do anything right now */
- if (sc->gfp_mask & __GFP_WAIT)
+ if (sc->gfp_mask & __GFP_IO)
mutex_lock(&c->bucket_lock);
else if (!mutex_trylock(&c->bucket_lock))
return -1;
@@ -1419,8 +1434,10 @@ static void btree_gc_start(struct cache_set *c)
for_each_cache(ca, c, i)
for_each_bucket(b, ca) {
b->gc_gen = b->gen;
- if (!atomic_read(&b->pin))
+ if (!atomic_read(&b->pin)) {
SET_GC_MARK(b, GC_MARK_RECLAIMABLE);
+ SET_GC_SECTORS_USED(b, 0);
+ }
}
for (d = c->devices;
@@ -2140,6 +2157,9 @@ int bch_btree_insert(struct btree_op *op, struct cache_set *c)
void bch_btree_set_root(struct btree *b)
{
unsigned i;
+ struct closure cl;
+
+ closure_init_stack(&cl);
BUG_ON(!b->written);
@@ -2153,8 +2173,9 @@ void bch_btree_set_root(struct btree *b)
b->c->root = b;
__bkey_put(b->c, &b->key);
- bch_journal_meta(b->c, NULL);
+ bch_journal_meta(b->c, &cl);
pr_debug("%s for %pf", pbtree(b), __builtin_return_address(0));
+ closure_sync(&cl);
}
/* Cache lookup */
diff --git a/drivers/md/bcache/closure.c b/drivers/md/bcache/closure.c
index bd05a9a8c7cf..9aba2017f0d1 100644
--- a/drivers/md/bcache/closure.c
+++ b/drivers/md/bcache/closure.c
@@ -66,16 +66,18 @@ static inline void closure_put_after_sub(struct closure *cl, int flags)
} else {
struct closure *parent = cl->parent;
struct closure_waitlist *wait = closure_waitlist(cl);
+ closure_fn *destructor = cl->fn;
closure_debug_destroy(cl);
+ smp_mb();
atomic_set(&cl->remaining, -1);
if (wait)
closure_wake_up(wait);
- if (cl->fn)
- cl->fn(cl);
+ if (destructor)
+ destructor(cl);
if (parent)
closure_put(parent);
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index 48efd4dea645..d285cd49104c 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -97,6 +97,8 @@ struct bio *bch_bio_split(struct bio *bio, int sectors,
if (bio->bi_rw & REQ_DISCARD) {
ret = bio_alloc_bioset(gfp, 1, bs);
+ if (!ret)
+ return NULL;
idx = 0;
goto out;
}
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index 8c8dfdcd9d4c..151a4ab90dd4 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -151,7 +151,8 @@ int bch_journal_read(struct cache_set *c, struct list_head *list,
bitmap_zero(bitmap, SB_JOURNAL_BUCKETS);
pr_debug("%u journal buckets", ca->sb.njournal_buckets);
- /* Read journal buckets ordered by golden ratio hash to quickly
+ /*
+ * Read journal buckets ordered by golden ratio hash to quickly
* find a sequence of buckets with valid journal entries
*/
for (i = 0; i < ca->sb.njournal_buckets; i++) {
@@ -164,36 +165,45 @@ int bch_journal_read(struct cache_set *c, struct list_head *list,
goto bsearch;
}
- /* If that fails, check all the buckets we haven't checked
+ /*
+ * If that fails, check all the buckets we haven't checked
* already
*/
pr_debug("falling back to linear search");
- for (l = 0; l < ca->sb.njournal_buckets; l++) {
- if (test_bit(l, bitmap))
- continue;
-
+ for (l = find_first_zero_bit(bitmap, ca->sb.njournal_buckets);
+ l < ca->sb.njournal_buckets;
+ l = find_next_zero_bit(bitmap, ca->sb.njournal_buckets, l + 1))
if (read_bucket(l))
goto bsearch;
- }
+
+ if (list_empty(list))
+ continue;
bsearch:
/* Binary search */
m = r = find_next_bit(bitmap, ca->sb.njournal_buckets, l + 1);
pr_debug("starting binary search, l %u r %u", l, r);
while (l + 1 < r) {
+ seq = list_entry(list->prev, struct journal_replay,
+ list)->j.seq;
+
m = (l + r) >> 1;
+ read_bucket(m);
- if (read_bucket(m))
+ if (seq != list_entry(list->prev, struct journal_replay,
+ list)->j.seq)
l = m;
else
r = m;
}
- /* Read buckets in reverse order until we stop finding more
+ /*
+ * Read buckets in reverse order until we stop finding more
* journal entries
*/
- pr_debug("finishing up");
+ pr_debug("finishing up: m %u njournal_buckets %u",
+ m, ca->sb.njournal_buckets);
l = m;
while (1) {
@@ -221,9 +231,10 @@ bsearch:
}
}
- c->journal.seq = list_entry(list->prev,
- struct journal_replay,
- list)->j.seq;
+ if (!list_empty(list))
+ c->journal.seq = list_entry(list->prev,
+ struct journal_replay,
+ list)->j.seq;
return 0;
#undef read_bucket
@@ -420,7 +431,7 @@ static void do_journal_discard(struct cache *ca)
return;
}
- switch (atomic_read(&ja->discard_in_flight) == DISCARD_IN_FLIGHT) {
+ switch (atomic_read(&ja->discard_in_flight)) {
case DISCARD_IN_FLIGHT:
return;
@@ -617,7 +628,7 @@ static void journal_write_unlocked(struct closure *cl)
bio_reset(bio);
bio->bi_sector = PTR_OFFSET(k, i);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META|REQ_FLUSH;
+ bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
bio->bi_size = sectors << 9;
bio->bi_end_io = journal_write_endio;
@@ -681,6 +692,7 @@ void bch_journal_meta(struct cache_set *c, struct closure *cl)
if (cl)
BUG_ON(!closure_wait(&w->wait, cl));
+ closure_flush(&c->journal.io);
__journal_try_write(c, true);
}
}
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index e5ff12e52d5b..a30a0f8a41c0 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -489,6 +489,12 @@ static void bch_insert_data_loop(struct closure *cl)
bch_queue_gc(op->c);
}
+ /*
+ * Journal writes are marked REQ_FLUSH; if the original write was a
+ * flush, it'll wait on the journal write.
+ */
+ bio->bi_rw &= ~(REQ_FLUSH|REQ_FUA);
+
do {
unsigned i;
struct bkey *k;
@@ -716,7 +722,7 @@ static struct search *search_alloc(struct bio *bio, struct bcache_device *d)
s->task = current;
s->orig_bio = bio;
s->write = (bio->bi_rw & REQ_WRITE) != 0;
- s->op.flush_journal = (bio->bi_rw & REQ_FLUSH) != 0;
+ s->op.flush_journal = (bio->bi_rw & (REQ_FLUSH|REQ_FUA)) != 0;
s->op.skip = (bio->bi_rw & REQ_DISCARD) != 0;
s->recoverable = 1;
s->start_time = jiffies;
@@ -1047,9 +1053,22 @@ static void request_write(struct cached_dev *dc, struct search *s)
trace_bcache_writethrough(s->orig_bio);
closure_bio_submit(bio, cl, s->d);
} else {
- s->op.cache_bio = bio;
trace_bcache_writeback(s->orig_bio);
bch_writeback_add(dc, bio_sectors(bio));
+ s->op.cache_bio = bio;
+
+ if (bio->bi_rw & REQ_FLUSH) {
+ /* Also need to send a flush to the backing device */
+ struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
+ dc->disk.bio_split);
+
+ flush->bi_rw = WRITE_FLUSH;
+ flush->bi_bdev = bio->bi_bdev;
+ flush->bi_end_io = request_endio;
+ flush->bi_private = cl;
+
+ closure_bio_submit(flush, cl, s->d);
+ }
}
out:
closure_call(&s->op.cl, bch_insert_data, NULL, cl);
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index f88e2b653a3f..b4713cea1913 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -704,7 +704,8 @@ static void bcache_device_detach(struct bcache_device *d)
atomic_set(&d->detaching, 0);
}
- bcache_device_unlink(d);
+ if (!d->flush_done)
+ bcache_device_unlink(d);
d->c->devices[d->id] = NULL;
closure_put(&d->c->caching);
@@ -781,6 +782,8 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size)
set_bit(QUEUE_FLAG_NONROT, &d->disk->queue->queue_flags);
set_bit(QUEUE_FLAG_DISCARD, &d->disk->queue->queue_flags);
+ blk_queue_flush(q, REQ_FLUSH|REQ_FUA);
+
return 0;
}
@@ -1014,6 +1017,14 @@ static void cached_dev_flush(struct closure *cl)
struct cached_dev *dc = container_of(cl, struct cached_dev, disk.cl);
struct bcache_device *d = &dc->disk;
+ mutex_lock(&bch_register_lock);
+ d->flush_done = 1;
+
+ if (d->c)
+ bcache_device_unlink(d);
+
+ mutex_unlock(&bch_register_lock);
+
bch_cache_accounting_destroy(&dc->accounting);
kobject_del(&d->kobj);
@@ -1303,18 +1314,22 @@ static void cache_set_flush(struct closure *cl)
static void __cache_set_unregister(struct closure *cl)
{
struct cache_set *c = container_of(cl, struct cache_set, caching);
- struct cached_dev *dc, *t;
+ struct cached_dev *dc;
size_t i;
mutex_lock(&bch_register_lock);
- if (test_bit(CACHE_SET_UNREGISTERING, &c->flags))
- list_for_each_entry_safe(dc, t, &c->cached_devs, list)
- bch_cached_dev_detach(dc);
-
for (i = 0; i < c->nr_uuids; i++)
- if (c->devices[i] && UUID_FLASH_ONLY(&c->uuids[i]))
- bcache_device_stop(c->devices[i]);
+ if (c->devices[i]) {
+ if (!UUID_FLASH_ONLY(&c->uuids[i]) &&
+ test_bit(CACHE_SET_UNREGISTERING, &c->flags)) {
+ dc = container_of(c->devices[i],
+ struct cached_dev, disk);
+ bch_cached_dev_detach(dc);
+ } else {
+ bcache_device_stop(c->devices[i]);
+ }
+ }
mutex_unlock(&bch_register_lock);
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 4d9cca47e4c6..e9bd6c0cca5b 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -214,7 +214,13 @@ STORE(__cached_dev)
}
if (attr == &sysfs_label) {
- memcpy(dc->sb.label, buf, SB_LABEL_SIZE);
+ if (size > SB_LABEL_SIZE)
+ return -EINVAL;
+ memcpy(dc->sb.label, buf, size);
+ if (size < SB_LABEL_SIZE)
+ dc->sb.label[size] = '\0';
+ if (size && dc->sb.label[size - 1] == '\n')
+ dc->sb.label[size - 1] = '\0';
bch_write_bdev_super(dc, NULL);
if (dc->disk.c) {
memcpy(dc->disk.c->uuids[dc->disk.id].label,
diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c
index da3a99e85b1e..38a43f8d36ec 100644
--- a/drivers/md/bcache/util.c
+++ b/drivers/md/bcache/util.c
@@ -190,7 +190,16 @@ void bch_time_stats_update(struct time_stats *stats, uint64_t start_time)
stats->last = now ?: 1;
}
-unsigned bch_next_delay(struct ratelimit *d, uint64_t done)
+/**
+ * bch_next_delay() - increment @d by the amount of work done, and return how
+ * long to delay until the next time to do some work.
+ *
+ * @d - the struct bch_ratelimit to update
+ * @done - the amount of work done, in arbitrary units
+ *
+ * Returns the amount of time to delay by, in jiffies
+ */
+uint64_t bch_next_delay(struct bch_ratelimit *d, uint64_t done)
{
uint64_t now = local_clock();
diff --git a/drivers/md/bcache/util.h b/drivers/md/bcache/util.h
index 577393e38c3a..43fd78affcea 100644
--- a/drivers/md/bcache/util.h
+++ b/drivers/md/bcache/util.h
@@ -452,17 +452,23 @@ read_attribute(name ## _last_ ## frequency_units)
(ewma) >> factor; \
})
-struct ratelimit {
+struct bch_ratelimit {
+ /* Next time we want to do some work, in nanoseconds */
uint64_t next;
+
+ /*
+ * Rate at which we want to do work, in units per nanosecond
+ * The units here correspond to the units passed to bch_next_delay()
+ */
unsigned rate;
};
-static inline void ratelimit_reset(struct ratelimit *d)
+static inline void bch_ratelimit_reset(struct bch_ratelimit *d)
{
d->next = local_clock();
}
-unsigned bch_next_delay(struct ratelimit *d, uint64_t done);
+uint64_t bch_next_delay(struct bch_ratelimit *d, uint64_t done);
#define __DIV_SAFE(n, d, zero) \
({ \
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 2714ed3991d1..841f0490d4ef 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -91,11 +91,15 @@ static void update_writeback_rate(struct work_struct *work)
static unsigned writeback_delay(struct cached_dev *dc, unsigned sectors)
{
+ uint64_t ret;
+
if (atomic_read(&dc->disk.detaching) ||
!dc->writeback_percent)
return 0;
- return bch_next_delay(&dc->writeback_rate, sectors * 10000000ULL);
+ ret = bch_next_delay(&dc->writeback_rate, sectors * 10000000ULL);
+
+ return min_t(uint64_t, ret, HZ);
}
/* Background writeback */
@@ -165,7 +169,7 @@ static void refill_dirty(struct closure *cl)
up_write(&dc->writeback_lock);
- ratelimit_reset(&dc->writeback_rate);
+ bch_ratelimit_reset(&dc->writeback_rate);
/* Punt to workqueue only so we don't recurse and blow the stack */
continue_at(cl, read_dirty, dirty_wq);
@@ -246,9 +250,7 @@ static void write_dirty_finish(struct closure *cl)
}
bch_keybuf_del(&dc->writeback_keys, w);
- atomic_dec_bug(&dc->in_flight);
-
- closure_wake_up(&dc->writeback_wait);
+ up(&dc->in_flight);
closure_return_with_destructor(cl, dirty_io_destructor);
}
@@ -278,7 +280,7 @@ static void write_dirty(struct closure *cl)
trace_bcache_write_dirty(&io->bio);
closure_bio_submit(&io->bio, cl, &io->dc->disk);
- continue_at(cl, write_dirty_finish, dirty_wq);
+ continue_at(cl, write_dirty_finish, system_wq);
}
static void read_dirty_endio(struct bio *bio, int error)
@@ -299,7 +301,7 @@ static void read_dirty_submit(struct closure *cl)
trace_bcache_read_dirty(&io->bio);
closure_bio_submit(&io->bio, cl, &io->dc->disk);
- continue_at(cl, write_dirty, dirty_wq);
+ continue_at(cl, write_dirty, system_wq);
}
static void read_dirty(struct closure *cl)
@@ -324,12 +326,8 @@ static void read_dirty(struct closure *cl)
if (delay > 0 &&
(KEY_START(&w->key) != dc->last_read ||
- jiffies_to_msecs(delay) > 50)) {
- w->private = NULL;
-
- closure_delay(&dc->writeback, delay);
- continue_at(cl, read_dirty, dirty_wq);
- }
+ jiffies_to_msecs(delay) > 50))
+ delay = schedule_timeout_uninterruptible(delay);
dc->last_read = KEY_OFFSET(&w->key);
@@ -354,15 +352,10 @@ static void read_dirty(struct closure *cl)
pr_debug("%s", pkey(&w->key));
- closure_call(&io->cl, read_dirty_submit, NULL, &dc->disk.cl);
+ down(&dc->in_flight);
+ closure_call(&io->cl, read_dirty_submit, NULL, cl);
delay = writeback_delay(dc, KEY_SIZE(&w->key));
-
- atomic_inc(&dc->in_flight);
-
- if (!closure_wait_event(&dc->writeback_wait, cl,
- atomic_read(&dc->in_flight) < 64))
- continue_at(cl, read_dirty, dirty_wq);
}
if (0) {
@@ -372,11 +365,16 @@ err:
bch_keybuf_del(&dc->writeback_keys, w);
}
- refill_dirty(cl);
+ /*
+ * Wait for outstanding writeback IOs to finish (and keybuf slots to be
+ * freed) before refilling again
+ */
+ continue_at(cl, refill_dirty, dirty_wq);
}
void bch_cached_dev_writeback_init(struct cached_dev *dc)
{
+ sema_init(&dc->in_flight, 64);
closure_init_unlocked(&dc->writeback);
init_rwsem(&dc->writeback_lock);
@@ -406,7 +404,7 @@ void bch_writeback_exit(void)
int __init bch_writeback_init(void)
{
- dirty_wq = create_singlethread_workqueue("bcache_writeback");
+ dirty_wq = create_workqueue("bcache_writeback");
if (!dirty_wq)
return -ENOMEM;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-16 20:45:05 +0000