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-rw-r--r--drivers/md/bcache/bcache.h2
-rw-r--r--drivers/md/bcache/bset.c33
-rw-r--r--drivers/md/bcache/btree.c174
-rw-r--r--drivers/md/bcache/btree.h37
-rw-r--r--drivers/md/bcache/writeback.c37
5 files changed, 186 insertions, 97 deletions
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 674e2f42e778..20fe96c121d9 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -384,8 +384,6 @@ struct keybuf_key {
void *private;
};
-typedef bool (keybuf_pred_fn)(struct keybuf *, struct bkey *);
-
struct keybuf {
struct bkey last_scanned;
spinlock_t lock;
diff --git a/drivers/md/bcache/bset.c b/drivers/md/bcache/bset.c
index d0512e451dda..14c2a23d3884 100644
--- a/drivers/md/bcache/bset.c
+++ b/drivers/md/bcache/bset.c
@@ -842,6 +842,13 @@ struct bkey *__bch_bset_search(struct btree *b, struct bset_tree *t,
/* Btree iterator */
+/*
+ * Returns true if l > r - unless l == r, in which case returns true if l is
+ * older than r.
+ *
+ * Necessary for btree_sort_fixup() - if there are multiple keys that compare
+ * equal in different sets, we have to process them newest to oldest.
+ */
static inline bool btree_iter_cmp(struct btree_iter_set l,
struct btree_iter_set r)
{
@@ -1146,16 +1153,16 @@ out:
/* Sysfs stuff */
struct bset_stats {
+ struct btree_op op;
size_t nodes;
size_t sets_written, sets_unwritten;
size_t bytes_written, bytes_unwritten;
size_t floats, failed;
};
-static int bch_btree_bset_stats(struct btree *b, struct btree_op *op,
- struct bset_stats *stats)
+static int btree_bset_stats(struct btree_op *op, struct btree *b)
{
- struct bkey *k;
+ struct bset_stats *stats = container_of(op, struct bset_stats, op);
unsigned i;
stats->nodes++;
@@ -1180,30 +1187,20 @@ static int bch_btree_bset_stats(struct btree *b, struct btree_op *op,
}
}
- if (b->level) {
- struct btree_iter iter;
-
- for_each_key_filter(b, k, &iter, bch_ptr_bad) {
- int ret = btree(bset_stats, k, b, op, stats);
- if (ret)
- return ret;
- }
- }
-
- return 0;
+ return MAP_CONTINUE;
}
int bch_bset_print_stats(struct cache_set *c, char *buf)
{
- struct btree_op op;
struct bset_stats t;
int ret;
- bch_btree_op_init_stack(&op);
memset(&t, 0, sizeof(struct bset_stats));
+ bch_btree_op_init_stack(&t.op);
+ t.op.c = c;
- ret = btree_root(bset_stats, c, &op, &t);
- if (ret)
+ ret = bch_btree_map_nodes(&t.op, c, &ZERO_KEY, btree_bset_stats);
+ if (ret < 0)
return ret;
return snprintf(buf, PAGE_SIZE,
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 17bfd87fc8f4..cfbdcf349b7f 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -2296,6 +2296,82 @@ int bch_btree_search_recurse(struct btree *b, struct btree_op *op)
return ret;
}
+/* Map across nodes or keys */
+
+static int bch_btree_map_nodes_recurse(struct btree *b, struct btree_op *op,
+ struct bkey *from,
+ btree_map_nodes_fn *fn, int flags)
+{
+ int ret = MAP_CONTINUE;
+
+ if (b->level) {
+ struct bkey *k;
+ struct btree_iter iter;
+
+ bch_btree_iter_init(b, &iter, from);
+
+ while ((k = bch_btree_iter_next_filter(&iter, b,
+ bch_ptr_bad))) {
+ ret = btree(map_nodes_recurse, k, b,
+ op, from, fn, flags);
+ from = NULL;
+
+ if (ret != MAP_CONTINUE)
+ return ret;
+ }
+ }
+
+ if (!b->level || flags == MAP_ALL_NODES)
+ ret = fn(op, b);
+
+ return ret;
+}
+
+int __bch_btree_map_nodes(struct btree_op *op, struct cache_set *c,
+ struct bkey *from, btree_map_nodes_fn *fn, int flags)
+{
+ int ret = btree_root(map_nodes_recurse, c, op, from, fn, flags);
+ if (closure_blocking(&op->cl))
+ closure_sync(&op->cl);
+ return ret;
+}
+
+static int bch_btree_map_keys_recurse(struct btree *b, struct btree_op *op,
+ struct bkey *from, btree_map_keys_fn *fn,
+ int flags)
+{
+ int ret = MAP_CONTINUE;
+ struct bkey *k;
+ struct btree_iter iter;
+
+ bch_btree_iter_init(b, &iter, from);
+
+ while ((k = bch_btree_iter_next_filter(&iter, b, bch_ptr_bad))) {
+ ret = !b->level
+ ? fn(op, b, k)
+ : btree(map_keys_recurse, k, b, op, from, fn, flags);
+ from = NULL;
+
+ if (ret != MAP_CONTINUE)
+ return ret;
+ }
+
+ if (!b->level && (flags & MAP_END_KEY))
+ ret = fn(op, b, &KEY(KEY_INODE(&b->key),
+ KEY_OFFSET(&b->key), 0));
+
+ return ret;
+}
+
+int bch_btree_map_keys(struct btree_op *op, struct cache_set *c,
+ struct bkey *from, btree_map_keys_fn *fn, int flags)
+{
+ int ret = btree_root(map_keys_recurse, c, op, from, fn, flags);
+ if (closure_blocking(&op->cl))
+ closure_sync(&op->cl);
+ return ret;
+}
+
/* Keybuf code */
static inline int keybuf_cmp(struct keybuf_key *l, struct keybuf_key *r)
@@ -2314,74 +2390,70 @@ static inline int keybuf_nonoverlapping_cmp(struct keybuf_key *l,
return clamp_t(int64_t, bkey_cmp(&l->key, &r->key), -1, 1);
}
-static int bch_btree_refill_keybuf(struct btree *b, struct btree_op *op,
- struct keybuf *buf, struct bkey *end,
- keybuf_pred_fn *pred)
-{
- struct btree_iter iter;
- bch_btree_iter_init(b, &iter, &buf->last_scanned);
-
- while (!array_freelist_empty(&buf->freelist)) {
- struct bkey *k = bch_btree_iter_next_filter(&iter, b,
- bch_ptr_bad);
-
- if (!b->level) {
- if (!k) {
- buf->last_scanned = b->key;
- break;
- }
+struct refill {
+ struct btree_op op;
+ struct keybuf *buf;
+ struct bkey *end;
+ keybuf_pred_fn *pred;
+};
- buf->last_scanned = *k;
- if (bkey_cmp(&buf->last_scanned, end) >= 0)
- break;
+static int refill_keybuf_fn(struct btree_op *op, struct btree *b,
+ struct bkey *k)
+{
+ struct refill *refill = container_of(op, struct refill, op);
+ struct keybuf *buf = refill->buf;
+ int ret = MAP_CONTINUE;
- if (pred(buf, k)) {
- struct keybuf_key *w;
+ if (bkey_cmp(k, refill->end) >= 0) {
+ ret = MAP_DONE;
+ goto out;
+ }
- spin_lock(&buf->lock);
+ if (!KEY_SIZE(k)) /* end key */
+ goto out;
- w = array_alloc(&buf->freelist);
+ if (refill->pred(buf, k)) {
+ struct keybuf_key *w;
- w->private = NULL;
- bkey_copy(&w->key, k);
+ spin_lock(&buf->lock);
- if (RB_INSERT(&buf->keys, w, node, keybuf_cmp))
- array_free(&buf->freelist, w);
+ w = array_alloc(&buf->freelist);
+ if (!w) {
+ spin_unlock(&buf->lock);
+ return MAP_DONE;
+ }
- spin_unlock(&buf->lock);
- }
- } else {
- if (!k)
- break;
+ w->private = NULL;
+ bkey_copy(&w->key, k);
- btree(refill_keybuf, k, b, op, buf, end, pred);
- /*
- * Might get an error here, but can't really do anything
- * and it'll get logged elsewhere. Just read what we
- * can.
- */
+ if (RB_INSERT(&buf->keys, w, node, keybuf_cmp))
+ array_free(&buf->freelist, w);
- if (bkey_cmp(&buf->last_scanned, end) >= 0)
- break;
+ if (array_freelist_empty(&buf->freelist))
+ ret = MAP_DONE;
- cond_resched();
- }
+ spin_unlock(&buf->lock);
}
-
- return 0;
+out:
+ buf->last_scanned = *k;
+ return ret;
}
void bch_refill_keybuf(struct cache_set *c, struct keybuf *buf,
struct bkey *end, keybuf_pred_fn *pred)
{
struct bkey start = buf->last_scanned;
- struct btree_op op;
- bch_btree_op_init_stack(&op);
+ struct refill refill;
cond_resched();
- btree_root(refill_keybuf, c, &op, buf, end, pred);
- closure_sync(&op.cl);
+ bch_btree_op_init_stack(&refill.op);
+ refill.buf = buf;
+ refill.end = end;
+ refill.pred = pred;
+
+ bch_btree_map_keys(&refill.op, c, &buf->last_scanned,
+ refill_keybuf_fn, MAP_END_KEY);
pr_debug("found %s keys from %llu:%llu to %llu:%llu",
RB_EMPTY_ROOT(&buf->keys) ? "no" :
@@ -2465,9 +2537,9 @@ struct keybuf_key *bch_keybuf_next(struct keybuf *buf)
}
struct keybuf_key *bch_keybuf_next_rescan(struct cache_set *c,
- struct keybuf *buf,
- struct bkey *end,
- keybuf_pred_fn *pred)
+ struct keybuf *buf,
+ struct bkey *end,
+ keybuf_pred_fn *pred)
{
struct keybuf_key *ret;
diff --git a/drivers/md/bcache/btree.h b/drivers/md/bcache/btree.h
index fa9641aaed39..cafdeb01e219 100644
--- a/drivers/md/bcache/btree.h
+++ b/drivers/md/bcache/btree.h
@@ -400,9 +400,42 @@ static inline void wake_up_gc(struct cache_set *c)
wake_up_process(c->gc_thread);
}
+#define MAP_DONE 0
+#define MAP_CONTINUE 1
+
+#define MAP_ALL_NODES 0
+#define MAP_LEAF_NODES 1
+
+#define MAP_END_KEY 1
+
+typedef int (btree_map_nodes_fn)(struct btree_op *, struct btree *);
+int __bch_btree_map_nodes(struct btree_op *, struct cache_set *,
+ struct bkey *, btree_map_nodes_fn *, int);
+
+static inline int bch_btree_map_nodes(struct btree_op *op, struct cache_set *c,
+ struct bkey *from, btree_map_nodes_fn *fn)
+{
+ return __bch_btree_map_nodes(op, c, from, fn, MAP_ALL_NODES);
+}
+
+static inline int bch_btree_map_leaf_nodes(struct btree_op *op,
+ struct cache_set *c,
+ struct bkey *from,
+ btree_map_nodes_fn *fn)
+{
+ return __bch_btree_map_nodes(op, c, from, fn, MAP_LEAF_NODES);
+}
+
+typedef int (btree_map_keys_fn)(struct btree_op *, struct btree *,
+ struct bkey *);
+int bch_btree_map_keys(struct btree_op *, struct cache_set *,
+ struct bkey *, btree_map_keys_fn *, int);
+
+typedef bool (keybuf_pred_fn)(struct keybuf *, struct bkey *);
+
void bch_keybuf_init(struct keybuf *);
-void bch_refill_keybuf(struct cache_set *, struct keybuf *, struct bkey *,
- keybuf_pred_fn *);
+void bch_refill_keybuf(struct cache_set *, struct keybuf *,
+ struct bkey *, keybuf_pred_fn *);
bool bch_keybuf_check_overlapping(struct keybuf *, struct bkey *,
struct bkey *);
void bch_keybuf_del(struct keybuf *, struct keybuf_key *);
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 4392f3f38d62..c68de9f12618 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -433,31 +433,17 @@ static int bch_writeback_thread(void *arg)
/* Init */
-static int bch_btree_sectors_dirty_init(struct btree *b, struct btree_op *op,
- struct cached_dev *dc)
+static int sectors_dirty_init_fn(struct btree_op *op, struct btree *b,
+ struct bkey *k)
{
- struct bkey *k;
- struct btree_iter iter;
-
- bch_btree_iter_init(b, &iter, &KEY(dc->disk.id, 0, 0));
- while ((k = bch_btree_iter_next_filter(&iter, b, bch_ptr_bad)))
- if (!b->level) {
- if (KEY_INODE(k) > dc->disk.id)
- break;
-
- if (KEY_DIRTY(k))
- bcache_dev_sectors_dirty_add(b->c, dc->disk.id,
- KEY_START(k),
- KEY_SIZE(k));
- } else {
- btree(sectors_dirty_init, k, b, op, dc);
- if (KEY_INODE(k) > dc->disk.id)
- break;
-
- cond_resched();
- }
+ if (KEY_INODE(k) > op->inode)
+ return MAP_DONE;
- return 0;
+ if (KEY_DIRTY(k))
+ bcache_dev_sectors_dirty_add(b->c, KEY_INODE(k),
+ KEY_START(k), KEY_SIZE(k));
+
+ return MAP_CONTINUE;
}
void bch_sectors_dirty_init(struct cached_dev *dc)
@@ -465,7 +451,10 @@ void bch_sectors_dirty_init(struct cached_dev *dc)
struct btree_op op;
bch_btree_op_init_stack(&op);
- btree_root(sectors_dirty_init, dc->disk.c, &op, dc);
+ op.inode = dc->disk.id;
+
+ bch_btree_map_keys(&op, dc->disk.c, &KEY(op.inode, 0, 0),
+ sectors_dirty_init_fn, 0);
}
int bch_cached_dev_writeback_init(struct cached_dev *dc)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 10:15:22 +0000