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authorKent Overstreet <kmo@daterainc.com>2013-07-25 05:06:22 +0400
committerKent Overstreet <kmo@daterainc.com>2013-11-11 09:56:30 +0400
commit6054c6d4da1940c7bf8870c6393773aa794f53d8 (patch)
tree5851d01503e16884cc733284ae102d27d0fe71ca /drivers/md
parent1b207d80d5b986fb305bc899357435d319319513 (diff)
downloadlinux-6054c6d4da1940c7bf8870c6393773aa794f53d8.tar.xz
bcache: Don't use op->insert_collision
When we convert bch_btree_insert() to bch_btree_map_leaf_nodes(), we won't be passing struct btree_op to bch_btree_insert() anymore - so we need a different way of returning whether there was a collision (really, a replace collision). Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/bcache/btree.c3
-rw-r--r--drivers/md/bcache/movinggc.c2
-rw-r--r--drivers/md/bcache/request.c10
-rw-r--r--drivers/md/bcache/request.h1
-rw-r--r--drivers/md/bcache/writeback.c7
5 files changed, 16 insertions, 7 deletions
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 7a1d8dc19e61..441524dd2d77 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -2227,6 +2227,9 @@ int bch_btree_insert(struct btree_op *op, struct cache_set *c,
}
}
+ if (op->insert_collision)
+ return -ESRCH;
+
return ret;
}
diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index c45ba4f21bae..601c96a62b30 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -52,7 +52,7 @@ static void write_moving_finish(struct closure *cl)
bio_for_each_segment_all(bv, bio, i)
__free_page(bv->bv_page);
- if (io->s.op.insert_collision)
+ if (io->s.insert_collision)
trace_bcache_gc_copy_collision(&io->w->key);
bch_keybuf_del(&io->s.c->moving_gc_keys, io->w);
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 16a3e16f3ff4..bcce06a1e466 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -218,6 +218,7 @@ static void bch_data_insert_keys(struct closure *cl)
struct search *s = container_of(cl, struct search, btree);
atomic_t *journal_ref = NULL;
struct bkey *replace_key = s->replace ? &s->replace_key : NULL;
+ int ret;
/*
* If we're looping, might already be waiting on
@@ -236,8 +237,11 @@ static void bch_data_insert_keys(struct closure *cl)
s->flush_journal
? &s->cl : NULL);
- if (bch_btree_insert(&s->op, s->c, &s->insert_keys,
- journal_ref, replace_key)) {
+ ret = bch_btree_insert(&s->op, s->c, &s->insert_keys,
+ journal_ref, replace_key);
+ if (ret == -ESRCH) {
+ s->insert_collision = true;
+ } else if (ret) {
s->error = -ENOMEM;
s->insert_data_done = true;
}
@@ -977,7 +981,7 @@ static void cached_dev_cache_miss_done(struct closure *cl)
{
struct search *s = container_of(cl, struct search, cl);
- if (s->op.insert_collision)
+ if (s->insert_collision)
bch_mark_cache_miss_collision(s);
if (s->cache_bio) {
diff --git a/drivers/md/bcache/request.h b/drivers/md/bcache/request.h
index 5ea7a0e6fca0..f0e930b4ca89 100644
--- a/drivers/md/bcache/request.h
+++ b/drivers/md/bcache/request.h
@@ -34,6 +34,7 @@ struct search {
unsigned insert_data_done:1;
unsigned replace:1;
+ unsigned insert_collision:1;
uint16_t write_prio;
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 346a5341faca..312032ef34f7 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -142,6 +142,7 @@ static void write_dirty_finish(struct closure *cl)
unsigned i;
struct btree_op op;
struct keylist keys;
+ int ret;
bch_btree_op_init(&op, -1);
bch_keylist_init(&keys);
@@ -153,12 +154,12 @@ static void write_dirty_finish(struct closure *cl)
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, &keys, NULL, &w->key);
+ ret = bch_btree_insert(&op, dc->disk.c, &keys, NULL, &w->key);
- if (op.insert_collision)
+ if (ret)
trace_bcache_writeback_collision(&w->key);
- atomic_long_inc(op.insert_collision
+ atomic_long_inc(ret
? &dc->disk.c->writeback_keys_failed
: &dc->disk.c->writeback_keys_done);
}