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author | Kent Overstreet <kmo@daterainc.com> | 2013-07-24 18:04:18 -0700 |
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committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-10 21:56:09 -0800 |
commit | b54d6934da7857f87b092df9b77dc1f42818ba94 (patch) | |
tree | f505788c5308287f65c0b2bc58e9ff358f336d03 /drivers/md/bcache/btree.c | |
parent | c18536a72ddd7fe30d63e6c1500b5c930ac14594 (diff) | |
download | op-kernel-dev-b54d6934da7857f87b092df9b77dc1f42818ba94.zip op-kernel-dev-b54d6934da7857f87b092df9b77dc1f42818ba94.tar.gz |
bcache: Kill op->cl
This isn't used for waiting asynchronously anymore - so this is a fairly
trivial refactoring.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'drivers/md/bcache/btree.c')
-rw-r--r-- | drivers/md/bcache/btree.c | 81 |
1 files changed, 35 insertions, 46 deletions
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index 5cb59c3..cb1a490 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -115,13 +115,6 @@ enum { static struct workqueue_struct *btree_io_wq; -void bch_btree_op_init_stack(struct btree_op *op) -{ - memset(op, 0, sizeof(struct btree_op)); - closure_init_stack(&op->cl); - op->lock = -1; -} - static inline bool should_split(struct btree *b) { struct bset *i = write_block(b); @@ -965,8 +958,7 @@ err: * bch_btree_node_get - find a btree node in the cache and lock it, reading it * in from disk if necessary. * - * If IO is necessary, it uses the closure embedded in struct btree_op to wait; - * if that closure is in non blocking mode, will return -EAGAIN. + * If IO is necessary and running under generic_make_request, returns -EAGAIN. * * The btree node will have either a read or a write lock held, depending on * level and op->lock. @@ -1260,6 +1252,9 @@ static void btree_gc_coalesce(struct btree *b, struct gc_stat *gc, { unsigned nodes = 0, keys = 0, blocks; int i; + struct closure cl; + + closure_init_stack(&cl); while (nodes < GC_MERGE_NODES && r[nodes].b) keys += r[nodes++].keys; @@ -1353,9 +1348,7 @@ static int btree_gc_recurse(struct btree *b, struct btree_op *op, { void write(struct btree *r) { - if (!r->written) - bch_btree_node_write(r, &op->cl); - else if (btree_node_dirty(r)) + if (!r->written || btree_node_dirty(r)) bch_btree_node_write(r, writes); up_write(&r->lock); @@ -1431,6 +1424,9 @@ static int bch_btree_gc_root(struct btree *b, struct btree_op *op, struct btree *n = NULL; unsigned keys = 0; int ret = 0, stale = btree_gc_mark_node(b, &keys, gc); + struct closure cl; + + closure_init_stack(&cl); if (b->level || stale > 10) n = btree_node_alloc_replacement(b); @@ -1442,11 +1438,11 @@ static int bch_btree_gc_root(struct btree *b, struct btree_op *op, ret = btree_gc_recurse(b, op, writes, gc); if (!b->written || btree_node_dirty(b)) { - bch_btree_node_write(b, n ? &op->cl : NULL); + bch_btree_node_write(b, n ? &cl : NULL); } if (!IS_ERR_OR_NULL(n)) { - closure_sync(&op->cl); + closure_sync(&cl); bch_btree_set_root(b); btree_node_free(n); rw_unlock(true, b); @@ -1545,15 +1541,13 @@ static void bch_btree_gc(struct cache_set *c) memset(&stats, 0, sizeof(struct gc_stat)); closure_init_stack(&writes); - bch_btree_op_init_stack(&op); - op.lock = SHRT_MAX; + bch_btree_op_init(&op, SHRT_MAX); btree_gc_start(c); atomic_inc(&c->prio_blocked); ret = btree_root(gc_root, c, &op, &writes, &stats); - closure_sync(&op.cl); closure_sync(&writes); if (ret) { @@ -1562,8 +1556,8 @@ static void bch_btree_gc(struct cache_set *c) } /* Possibly wait for new UUIDs or whatever to hit disk */ - bch_journal_meta(c, &op.cl); - closure_sync(&op.cl); + bch_journal_meta(c, &writes); + closure_sync(&writes); available = bch_btree_gc_finish(c); @@ -1671,8 +1665,7 @@ int bch_btree_check(struct cache_set *c) struct btree_op op; memset(seen, 0, sizeof(seen)); - bch_btree_op_init_stack(&op); - op.lock = SHRT_MAX; + bch_btree_op_init(&op, SHRT_MAX); for (i = 0; c->cache[i]; i++) { size_t n = DIV_ROUND_UP(c->cache[i]->sb.nbuckets, 8); @@ -1980,6 +1973,9 @@ static int btree_split(struct btree *b, struct btree_op *op, bool split; struct btree *n1, *n2 = NULL, *n3 = NULL; uint64_t start_time = local_clock(); + struct closure cl; + + closure_init_stack(&cl); n1 = btree_node_alloc_replacement(b); if (IS_ERR(n1)) @@ -2025,7 +2021,7 @@ static int btree_split(struct btree *b, struct btree_op *op, bkey_copy_key(&n2->key, &b->key); bch_keylist_add(parent_keys, &n2->key); - bch_btree_node_write(n2, &op->cl); + bch_btree_node_write(n2, &cl); rw_unlock(true, n2); } else { trace_bcache_btree_node_compact(b, n1->sets[0].data->keys); @@ -2034,23 +2030,23 @@ static int btree_split(struct btree *b, struct btree_op *op, } bch_keylist_add(parent_keys, &n1->key); - bch_btree_node_write(n1, &op->cl); + bch_btree_node_write(n1, &cl); if (n3) { /* Depth increases, make a new root */ bkey_copy_key(&n3->key, &MAX_KEY); bch_btree_insert_keys(n3, op, parent_keys); - bch_btree_node_write(n3, &op->cl); + bch_btree_node_write(n3, &cl); - closure_sync(&op->cl); + closure_sync(&cl); bch_btree_set_root(n3); rw_unlock(true, n3); } else if (!b->parent) { /* Root filled up but didn't need to be split */ bch_keylist_reset(parent_keys); - closure_sync(&op->cl); + closure_sync(&cl); bch_btree_set_root(n1); } else { unsigned i; @@ -2065,7 +2061,7 @@ static int btree_split(struct btree *b, struct btree_op *op, } bch_keylist_push(parent_keys); - closure_sync(&op->cl); + closure_sync(&cl); atomic_inc(&b->c->prio_blocked); } @@ -2126,10 +2122,15 @@ static int bch_btree_insert_node(struct btree *b, struct btree_op *op, BUG_ON(write_block(b) != b->sets[b->nsets].data); if (bch_btree_insert_keys(b, op, insert_keys)) { - if (!b->level) + if (!b->level) { bch_btree_leaf_dirty(b, journal_ref); - else - bch_btree_node_write(b, &op->cl); + } else { + struct closure cl; + + closure_init_stack(&cl); + bch_btree_node_write(b, &cl); + closure_sync(&cl); + } } } } while (!bch_keylist_empty(&split_keys)); @@ -2204,12 +2205,6 @@ int bch_btree_insert(struct btree_op *op, struct cache_set *c, { int ret = 0; - /* - * Don't want to block with the btree locked unless we have to, - * otherwise we get deadlocks with try_harder and between split/gc - */ - clear_closure_blocking(&op->cl); - BUG_ON(bch_keylist_empty(keys)); while (!bch_keylist_empty(keys)) { @@ -2217,8 +2212,8 @@ int bch_btree_insert(struct btree_op *op, struct cache_set *c, ret = btree_root(insert_recurse, c, op, keys, journal_ref); if (ret == -EAGAIN) { + BUG(); ret = 0; - closure_sync(&op->cl); } else if (ret) { struct bkey *k; @@ -2292,10 +2287,7 @@ static int bch_btree_map_nodes_recurse(struct btree *b, struct btree_op *op, 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; + return btree_root(map_nodes_recurse, c, op, from, fn, flags); } static int bch_btree_map_keys_recurse(struct btree *b, struct btree_op *op, @@ -2328,10 +2320,7 @@ static int bch_btree_map_keys_recurse(struct btree *b, struct btree_op *op, 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; + return btree_root(map_keys_recurse, c, op, from, fn, flags); } /* Keybuf code */ @@ -2409,7 +2398,7 @@ void bch_refill_keybuf(struct cache_set *c, struct keybuf *buf, cond_resched(); - bch_btree_op_init_stack(&refill.op); + bch_btree_op_init(&refill.op, -1); refill.buf = buf; refill.end = end; refill.pred = pred; |