From 3088abc291d9324fc222e8e7830a2cdf1b75b1cc Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Wed, 24 Jul 2013 17:26:51 -0700 Subject: [PATCH] bcache: Move keylist out of btree_op Slowly working on pruning struct btree_op - the aim is for it to only contain things that are actually necessary for traversing the btree. Signed-off-by: Kent Overstreet --- drivers/md/bcache/btree.c | 1 - drivers/md/bcache/btree.h | 4 ---- drivers/md/bcache/journal.c | 11 +++++++---- drivers/md/bcache/request.c | 37 ++++++++++++++++++++--------------- drivers/md/bcache/request.h | 4 +++- drivers/md/bcache/writeback.c | 7 +++++-- 6 files changed, 36 insertions(+), 28 deletions(-) diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index 83ab685d1eb0..01c0612bc007 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -113,7 +113,6 @@ 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; - bch_keylist_init(&op->keys); } /* Btree key manipulation */ diff --git a/drivers/md/bcache/btree.h b/drivers/md/bcache/btree.h index ea0814b51574..17b7a4e39c7e 100644 --- a/drivers/md/bcache/btree.h +++ b/drivers/md/bcache/btree.h @@ -267,10 +267,6 @@ struct btree_op { unsigned lookup_done:1; unsigned insert_collision:1; - /* Anything after this point won't get zeroed in do_bio_hook() */ - - /* Keys to be inserted */ - struct keylist keys; BKEY_PADDED(replace); }; diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c index 960b14741633..61802ff12fcc 100644 --- a/drivers/md/bcache/journal.c +++ b/drivers/md/bcache/journal.c @@ -301,6 +301,9 @@ int bch_journal_replay(struct cache_set *s, struct list_head *list, list_entry(list->prev, struct journal_replay, list); uint64_t start = i->j.last_seq, end = i->j.seq, n = start; + struct keylist keylist; + + bch_keylist_init(&keylist); list_for_each_entry(i, list, list) { BUG_ON(i->pin && atomic_read(i->pin) != 1); @@ -314,16 +317,16 @@ int bch_journal_replay(struct cache_set *s, struct list_head *list, k = bkey_next(k)) { trace_bcache_journal_replay_key(k); - bkey_copy(op->keys.top, k); - bch_keylist_push(&op->keys); + bkey_copy(keylist.top, k); + bch_keylist_push(&keylist); op->journal = i->pin; - ret = bch_btree_insert(op, s, &op->keys); + ret = bch_btree_insert(op, s, &keylist); if (ret) goto err; - BUG_ON(!bch_keylist_empty(&op->keys)); + BUG_ON(!bch_keylist_empty(&keylist)); keys++; cond_resched(); diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 65c7c221e836..5af96c843445 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -231,11 +231,11 @@ static void bch_data_insert_keys(struct closure *cl) #endif if (s->write) - op->journal = bch_journal(op->c, &op->keys, + op->journal = bch_journal(op->c, &s->insert_keys, op->flush_journal ? &s->cl : NULL); - if (bch_btree_insert(op, op->c, &op->keys)) { + if (bch_btree_insert(op, op->c, &s->insert_keys)) { s->error = -ENOMEM; op->insert_data_done = true; } @@ -247,7 +247,7 @@ static void bch_data_insert_keys(struct closure *cl) if (!op->insert_data_done) continue_at(cl, bch_data_insert_start, bcache_wq); - bch_keylist_free(&op->keys); + bch_keylist_free(&s->insert_keys); closure_return(cl); } @@ -439,6 +439,7 @@ static bool bch_alloc_sectors(struct bkey *k, unsigned sectors, static void bch_data_invalidate(struct closure *cl) { struct btree_op *op = container_of(cl, struct btree_op, cl); + struct search *s = container_of(op, struct search, op); struct bio *bio = op->cache_bio; pr_debug("invalidating %i sectors from %llu", @@ -447,14 +448,14 @@ static void bch_data_invalidate(struct closure *cl) while (bio_sectors(bio)) { unsigned len = min(bio_sectors(bio), 1U << 14); - if (bch_keylist_realloc(&op->keys, 0, op->c)) + if (bch_keylist_realloc(&s->insert_keys, 0, op->c)) goto out; bio->bi_sector += len; bio->bi_size -= len << 9; - bch_keylist_add(&op->keys, &KEY(op->inode, - bio->bi_sector, len)); + bch_keylist_add(&s->insert_keys, + &KEY(op->inode, bio->bi_sector, len)); } op->insert_data_done = true; @@ -466,6 +467,7 @@ out: static void bch_data_insert_error(struct closure *cl) { struct btree_op *op = container_of(cl, struct btree_op, cl); + struct search *s = container_of(op, struct search, op); /* * Our data write just errored, which means we've got a bunch of keys to @@ -476,9 +478,9 @@ static void bch_data_insert_error(struct closure *cl) * from the keys we'll accomplish just that. */ - struct bkey *src = op->keys.keys, *dst = op->keys.keys; + struct bkey *src = s->insert_keys.keys, *dst = s->insert_keys.keys; - while (src != op->keys.top) { + while (src != s->insert_keys.top) { struct bkey *n = bkey_next(src); SET_KEY_PTRS(src, 0); @@ -488,7 +490,7 @@ static void bch_data_insert_error(struct closure *cl) src = n; } - op->keys.top = dst; + s->insert_keys.top = dst; bch_data_insert_keys(cl); } @@ -539,12 +541,12 @@ static void bch_data_insert_start(struct closure *cl) ? s->d->bio_split : op->c->bio_split; /* 1 for the device pointer and 1 for the chksum */ - if (bch_keylist_realloc(&op->keys, + if (bch_keylist_realloc(&s->insert_keys, 1 + (op->csum ? 1 : 0), op->c)) continue_at(cl, bch_data_insert_keys, bcache_wq); - k = op->keys.top; + k = s->insert_keys.top; bkey_init(k); SET_KEY_INODE(k, op->inode); SET_KEY_OFFSET(k, bio->bi_sector); @@ -570,7 +572,7 @@ static void bch_data_insert_start(struct closure *cl) bio_csum(n, k); trace_bcache_cache_insert(k); - bch_keylist_push(&op->keys); + bch_keylist_push(&s->insert_keys); n->bi_rw |= REQ_WRITE; bch_submit_bbio(n, op->c, k, 0); @@ -605,7 +607,7 @@ err: op->insert_data_done = true; bio_put(bio); - if (!bch_keylist_empty(&op->keys)) + if (!bch_keylist_empty(&s->insert_keys)) continue_at(cl, bch_data_insert_keys, bcache_wq); else closure_return(cl); @@ -634,8 +636,9 @@ err: void bch_data_insert(struct closure *cl) { struct btree_op *op = container_of(cl, struct btree_op, cl); + struct search *s = container_of(op, struct search, op); - bch_keylist_init(&op->keys); + bch_keylist_init(&s->insert_keys); bio_get(op->cache_bio); bch_data_insert_start(cl); } @@ -725,8 +728,10 @@ static void search_free(struct closure *cl) static struct search *search_alloc(struct bio *bio, struct bcache_device *d) { struct bio_vec *bv; - struct search *s = mempool_alloc(d->c->search, GFP_NOIO); - memset(s, 0, offsetof(struct search, op.keys)); + struct search *s; + + s = mempool_alloc(d->c->search, GFP_NOIO); + memset(s, 0, offsetof(struct search, insert_keys)); __closure_init(&s->cl, NULL); diff --git a/drivers/md/bcache/request.h b/drivers/md/bcache/request.h index 1f1b59d38db5..7d02ac5f936e 100644 --- a/drivers/md/bcache/request.h +++ b/drivers/md/bcache/request.h @@ -25,8 +25,10 @@ struct search { short error; unsigned long start_time; - /* Anything past op->keys won't get zeroed in do_bio_hook */ struct btree_op op; + + /* Anything past this point won't get zeroed in search_alloc() */ + struct keylist insert_keys; }; void bch_cache_read_endio(struct bio *, int); diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index 8ffc8ec7231d..51dc709c9bf7 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -300,18 +300,21 @@ static void write_dirty_finish(struct closure *cl) if (KEY_DIRTY(&w->key)) { unsigned i; struct btree_op op; + struct keylist keys; + bch_btree_op_init_stack(&op); + bch_keylist_init(&keys); op.type = BTREE_REPLACE; bkey_copy(&op.replace, &w->key); SET_KEY_DIRTY(&w->key, false); - bch_keylist_add(&op.keys, &w->key); + bch_keylist_add(&keys, &w->key); for (i = 0; i < KEY_PTRS(&w->key); i++) atomic_inc(&PTR_BUCKET(dc->disk.c, &w->key, i)->pin); - bch_btree_insert(&op, dc->disk.c, &op.keys); + bch_btree_insert(&op, dc->disk.c, &keys); closure_sync(&op.cl); if (op.insert_collision) -- 2.39.5