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path: root/drivers/md/bcache/btree.c
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Diffstat (limited to 'drivers/md/bcache/btree.c')
-rw-r--r--drivers/md/bcache/btree.c146
1 files changed, 69 insertions, 77 deletions
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 3d8bd0692af3..910df242c83d 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -104,7 +104,7 @@
static inline struct bset *write_block(struct btree *b)
{
- return ((void *) btree_bset_first(b)) + b->written * block_bytes(b->c);
+ return ((void *) btree_bset_first(b)) + b->written * block_bytes(b->c->cache);
}
static void bch_btree_init_next(struct btree *b)
@@ -117,7 +117,7 @@ static void bch_btree_init_next(struct btree *b)
if (b->written < btree_blocks(b))
bch_bset_init_next(&b->keys, write_block(b),
- bset_magic(&b->c->sb));
+ bset_magic(&b->c->cache->sb));
}
@@ -155,7 +155,7 @@ void bch_btree_node_read_done(struct btree *b)
* See the comment arount cache_set->fill_iter.
*/
iter = mempool_alloc(&b->c->fill_iter, GFP_NOIO);
- iter->size = b->c->sb.bucket_size / b->c->sb.block_size;
+ iter->size = b->c->cache->sb.bucket_size / b->c->cache->sb.block_size;
iter->used = 0;
#ifdef CONFIG_BCACHE_DEBUG
@@ -173,12 +173,12 @@ void bch_btree_node_read_done(struct btree *b)
goto err;
err = "bad btree header";
- if (b->written + set_blocks(i, block_bytes(b->c)) >
+ if (b->written + set_blocks(i, block_bytes(b->c->cache)) >
btree_blocks(b))
goto err;
err = "bad magic";
- if (i->magic != bset_magic(&b->c->sb))
+ if (i->magic != bset_magic(&b->c->cache->sb))
goto err;
err = "bad checksum";
@@ -199,13 +199,13 @@ void bch_btree_node_read_done(struct btree *b)
bch_btree_iter_push(iter, i->start, bset_bkey_last(i));
- b->written += set_blocks(i, block_bytes(b->c));
+ b->written += set_blocks(i, block_bytes(b->c->cache));
}
err = "corrupted btree";
for (i = write_block(b);
bset_sector_offset(&b->keys, i) < KEY_SIZE(&b->key);
- i = ((void *) i) + block_bytes(b->c))
+ i = ((void *) i) + block_bytes(b->c->cache))
if (i->seq == b->keys.set[0].data->seq)
goto err;
@@ -219,7 +219,7 @@ void bch_btree_node_read_done(struct btree *b)
if (b->written < btree_blocks(b))
bch_bset_init_next(&b->keys, write_block(b),
- bset_magic(&b->c->sb));
+ bset_magic(&b->c->cache->sb));
out:
mempool_free(iter, &b->c->fill_iter);
return;
@@ -347,7 +347,7 @@ static void do_btree_node_write(struct btree *b)
b->bio->bi_end_io = btree_node_write_endio;
b->bio->bi_private = cl;
- b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c));
+ b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c->cache));
b->bio->bi_opf = REQ_OP_WRITE | REQ_META | REQ_FUA;
bch_bio_map(b->bio, i);
@@ -423,10 +423,10 @@ void __bch_btree_node_write(struct btree *b, struct closure *parent)
do_btree_node_write(b);
- atomic_long_add(set_blocks(i, block_bytes(b->c)) * b->c->sb.block_size,
+ atomic_long_add(set_blocks(i, block_bytes(b->c->cache)) * b->c->cache->sb.block_size,
&PTR_CACHE(b->c, &b->key, 0)->btree_sectors_written);
- b->written += set_blocks(i, block_bytes(b->c));
+ b->written += set_blocks(i, block_bytes(b->c->cache));
}
void bch_btree_node_write(struct btree *b, struct closure *parent)
@@ -514,7 +514,7 @@ static void bch_btree_leaf_dirty(struct btree *b, atomic_t *journal_ref)
* mca -> memory cache
*/
-#define mca_reserve(c) (((c->root && c->root->level) \
+#define mca_reserve(c) (((!IS_ERR_OR_NULL(c->root) && c->root->level) \
? c->root->level : 1) * 8 + 16)
#define mca_can_free(c) \
max_t(int, 0, c->btree_cache_used - mca_reserve(c))
@@ -738,7 +738,7 @@ void bch_btree_cache_free(struct cache_set *c)
if (c->verify_data)
list_move(&c->verify_data->list, &c->btree_cache);
- free_pages((unsigned long) c->verify_ondisk, ilog2(meta_bucket_pages(&c->sb)));
+ free_pages((unsigned long) c->verify_ondisk, ilog2(meta_bucket_pages(&c->cache->sb)));
#endif
list_splice(&c->btree_cache_freeable,
@@ -785,7 +785,8 @@ int bch_btree_cache_alloc(struct cache_set *c)
mutex_init(&c->verify_lock);
c->verify_ondisk = (void *)
- __get_free_pages(GFP_KERNEL|__GFP_COMP, ilog2(meta_bucket_pages(&c->sb)));
+ __get_free_pages(GFP_KERNEL|__GFP_COMP,
+ ilog2(meta_bucket_pages(&c->cache->sb)));
if (!c->verify_ondisk) {
/*
* Don't worry about the mca_rereserve buckets
@@ -1091,7 +1092,7 @@ struct btree *__bch_btree_node_alloc(struct cache_set *c, struct btree_op *op,
mutex_lock(&c->bucket_lock);
retry:
- if (__bch_bucket_alloc_set(c, RESERVE_BTREE, &k.key, 1, wait))
+ if (__bch_bucket_alloc_set(c, RESERVE_BTREE, &k.key, wait))
goto err;
bkey_put(c, &k.key);
@@ -1108,7 +1109,7 @@ retry:
}
b->parent = parent;
- bch_bset_init_next(&b->keys, b->keys.set->data, bset_magic(&b->c->sb));
+ bch_bset_init_next(&b->keys, b->keys.set->data, bset_magic(&b->c->cache->sb));
mutex_unlock(&c->bucket_lock);
@@ -1167,19 +1168,18 @@ static void make_btree_freeing_key(struct btree *b, struct bkey *k)
static int btree_check_reserve(struct btree *b, struct btree_op *op)
{
struct cache_set *c = b->c;
- struct cache *ca;
- unsigned int i, reserve = (c->root->level - b->level) * 2 + 1;
+ struct cache *ca = c->cache;
+ unsigned int reserve = (c->root->level - b->level) * 2 + 1;
mutex_lock(&c->bucket_lock);
- for_each_cache(ca, c, i)
- if (fifo_used(&ca->free[RESERVE_BTREE]) < reserve) {
- if (op)
- prepare_to_wait(&c->btree_cache_wait, &op->wait,
- TASK_UNINTERRUPTIBLE);
- mutex_unlock(&c->bucket_lock);
- return -EINTR;
- }
+ if (fifo_used(&ca->free[RESERVE_BTREE]) < reserve) {
+ if (op)
+ prepare_to_wait(&c->btree_cache_wait, &op->wait,
+ TASK_UNINTERRUPTIBLE);
+ mutex_unlock(&c->bucket_lock);
+ return -EINTR;
+ }
mutex_unlock(&c->bucket_lock);
@@ -1345,7 +1345,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
if (nodes < 2 ||
__set_blocks(b->keys.set[0].data, keys,
- block_bytes(b->c)) > blocks * (nodes - 1))
+ block_bytes(b->c->cache)) > blocks * (nodes - 1))
return 0;
for (i = 0; i < nodes; i++) {
@@ -1379,7 +1379,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
k = bkey_next(k)) {
if (__set_blocks(n1, n1->keys + keys +
bkey_u64s(k),
- block_bytes(b->c)) > blocks)
+ block_bytes(b->c->cache)) > blocks)
break;
last = k;
@@ -1395,7 +1395,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
* though)
*/
if (__set_blocks(n1, n1->keys + n2->keys,
- block_bytes(b->c)) >
+ block_bytes(b->c->cache)) >
btree_blocks(new_nodes[i]))
goto out_unlock_nocoalesce;
@@ -1404,7 +1404,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
last = &r->b->key;
}
- BUG_ON(__set_blocks(n1, n1->keys + keys, block_bytes(b->c)) >
+ BUG_ON(__set_blocks(n1, n1->keys + keys, block_bytes(b->c->cache)) >
btree_blocks(new_nodes[i]));
if (last)
@@ -1695,7 +1695,6 @@ static void btree_gc_start(struct cache_set *c)
{
struct cache *ca;
struct bucket *b;
- unsigned int i;
if (!c->gc_mark_valid)
return;
@@ -1705,14 +1704,14 @@ static void btree_gc_start(struct cache_set *c)
c->gc_mark_valid = 0;
c->gc_done = ZERO_KEY;
- for_each_cache(ca, c, i)
- for_each_bucket(b, ca) {
- b->last_gc = b->gen;
- if (!atomic_read(&b->pin)) {
- SET_GC_MARK(b, 0);
- SET_GC_SECTORS_USED(b, 0);
- }
+ ca = c->cache;
+ for_each_bucket(b, ca) {
+ b->last_gc = b->gen;
+ if (!atomic_read(&b->pin)) {
+ SET_GC_MARK(b, 0);
+ SET_GC_SECTORS_USED(b, 0);
}
+ }
mutex_unlock(&c->bucket_lock);
}
@@ -1721,7 +1720,8 @@ static void bch_btree_gc_finish(struct cache_set *c)
{
struct bucket *b;
struct cache *ca;
- unsigned int i;
+ unsigned int i, j;
+ uint64_t *k;
mutex_lock(&c->bucket_lock);
@@ -1739,7 +1739,6 @@ static void bch_btree_gc_finish(struct cache_set *c)
struct bcache_device *d = c->devices[i];
struct cached_dev *dc;
struct keybuf_key *w, *n;
- unsigned int j;
if (!d || UUID_FLASH_ONLY(&c->uuids[i]))
continue;
@@ -1756,29 +1755,27 @@ static void bch_btree_gc_finish(struct cache_set *c)
rcu_read_unlock();
c->avail_nbuckets = 0;
- for_each_cache(ca, c, i) {
- uint64_t *i;
- ca->invalidate_needs_gc = 0;
+ ca = c->cache;
+ ca->invalidate_needs_gc = 0;
- for (i = ca->sb.d; i < ca->sb.d + ca->sb.keys; i++)
- SET_GC_MARK(ca->buckets + *i, GC_MARK_METADATA);
+ for (k = ca->sb.d; k < ca->sb.d + ca->sb.keys; k++)
+ SET_GC_MARK(ca->buckets + *k, GC_MARK_METADATA);
- for (i = ca->prio_buckets;
- i < ca->prio_buckets + prio_buckets(ca) * 2; i++)
- SET_GC_MARK(ca->buckets + *i, GC_MARK_METADATA);
+ for (k = ca->prio_buckets;
+ k < ca->prio_buckets + prio_buckets(ca) * 2; k++)
+ SET_GC_MARK(ca->buckets + *k, GC_MARK_METADATA);
- for_each_bucket(b, ca) {
- c->need_gc = max(c->need_gc, bucket_gc_gen(b));
+ for_each_bucket(b, ca) {
+ c->need_gc = max(c->need_gc, bucket_gc_gen(b));
- if (atomic_read(&b->pin))
- continue;
+ if (atomic_read(&b->pin))
+ continue;
- BUG_ON(!GC_MARK(b) && GC_SECTORS_USED(b));
+ BUG_ON(!GC_MARK(b) && GC_SECTORS_USED(b));
- if (!GC_MARK(b) || GC_MARK(b) == GC_MARK_RECLAIMABLE)
- c->avail_nbuckets++;
- }
+ if (!GC_MARK(b) || GC_MARK(b) == GC_MARK_RECLAIMABLE)
+ c->avail_nbuckets++;
}
mutex_unlock(&c->bucket_lock);
@@ -1830,12 +1827,10 @@ static void bch_btree_gc(struct cache_set *c)
static bool gc_should_run(struct cache_set *c)
{
- struct cache *ca;
- unsigned int i;
+ struct cache *ca = c->cache;
- for_each_cache(ca, c, i)
- if (ca->invalidate_needs_gc)
- return true;
+ if (ca->invalidate_needs_gc)
+ return true;
if (atomic_read(&c->sectors_to_gc) < 0)
return true;
@@ -2081,9 +2076,8 @@ out:
void bch_initial_gc_finish(struct cache_set *c)
{
- struct cache *ca;
+ struct cache *ca = c->cache;
struct bucket *b;
- unsigned int i;
bch_btree_gc_finish(c);
@@ -2098,20 +2092,18 @@ void bch_initial_gc_finish(struct cache_set *c)
* This is only safe for buckets that have no live data in them, which
* there should always be some of.
*/
- for_each_cache(ca, c, i) {
- for_each_bucket(b, ca) {
- if (fifo_full(&ca->free[RESERVE_PRIO]) &&
- fifo_full(&ca->free[RESERVE_BTREE]))
- break;
+ for_each_bucket(b, ca) {
+ if (fifo_full(&ca->free[RESERVE_PRIO]) &&
+ fifo_full(&ca->free[RESERVE_BTREE]))
+ break;
- if (bch_can_invalidate_bucket(ca, b) &&
- !GC_MARK(b)) {
- __bch_invalidate_one_bucket(ca, b);
- if (!fifo_push(&ca->free[RESERVE_PRIO],
- b - ca->buckets))
- fifo_push(&ca->free[RESERVE_BTREE],
- b - ca->buckets);
- }
+ if (bch_can_invalidate_bucket(ca, b) &&
+ !GC_MARK(b)) {
+ __bch_invalidate_one_bucket(ca, b);
+ if (!fifo_push(&ca->free[RESERVE_PRIO],
+ b - ca->buckets))
+ fifo_push(&ca->free[RESERVE_BTREE],
+ b - ca->buckets);
}
}
@@ -2219,7 +2211,7 @@ static int btree_split(struct btree *b, struct btree_op *op,
goto err;
split = set_blocks(btree_bset_first(n1),
- block_bytes(n1->c)) > (btree_blocks(b) * 4) / 5;
+ block_bytes(n1->c->cache)) > (btree_blocks(b) * 4) / 5;
if (split) {
unsigned int keys = 0;