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bcache: Break up struct search

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With all the recent refactoring around struct btree op struct search has
gotten rather large.

But we can now easily break it up in a different way - we break out
struct btree_insert_op which is for inserting data into the cache, and
that's now what the copying gc code uses - struct search is now specific
to request.c

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
This commit is contained in:
Kent Overstreet
2013-09-10 19:02:45 -07:00
parent cc7b881921
commit 220bb38c21
9 changed files with 448 additions and 465 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
drivers/md/bcache/movinggc.c
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@@ -12,8 +12,9 @@
#include <trace/events/bcache.h>
struct moving_io {
struct closure cl;
struct keybuf_key *w;
struct search s;
struct data_insert_op op;
struct bbio bio;
};
@@ -38,13 +39,13 @@ static bool moving_pred(struct keybuf *buf, struct bkey *k)
static void moving_io_destructor(struct closure *cl)
{
struct moving_io *io = container_of(cl, struct moving_io, s.cl);
struct moving_io *io = container_of(cl, struct moving_io, cl);
kfree(io);
}
static void write_moving_finish(struct closure *cl)
{
struct moving_io *io = container_of(cl, struct moving_io, s.cl);
struct moving_io *io = container_of(cl, struct moving_io, cl);
struct bio *bio = &io->bio.bio;
struct bio_vec *bv;
int i;
@@ -52,12 +53,12 @@ static void write_moving_finish(struct closure *cl)
bio_for_each_segment_all(bv, bio, i)
__free_page(bv->bv_page);
if (io->s.insert_collision)
if (io->op.replace_collision)
trace_bcache_gc_copy_collision(&io->w->key);
bch_keybuf_del(&io->s.c->moving_gc_keys, io->w);
bch_keybuf_del(&io->op.c->moving_gc_keys, io->w);
up(&io->s.c->moving_in_flight);
up(&io->op.c->moving_in_flight);
closure_return_with_destructor(cl, moving_io_destructor);
}
@@ -65,12 +66,12 @@ static void write_moving_finish(struct closure *cl)
static void read_moving_endio(struct bio *bio, int error)
{
struct moving_io *io = container_of(bio->bi_private,
struct moving_io, s.cl);
struct moving_io, cl);
if (error)
io->s.error = error;
io->op.error = error;
bch_bbio_endio(io->s.c, bio, error, "reading data to move");
bch_bbio_endio(io->op.c, bio, error, "reading data to move");
}
static void moving_init(struct moving_io *io)
@@ -84,32 +85,30 @@ static void moving_init(struct moving_io *io)
bio->bi_size = KEY_SIZE(&io->w->key) << 9;
bio->bi_max_vecs = DIV_ROUND_UP(KEY_SIZE(&io->w->key),
PAGE_SECTORS);
bio->bi_private = &io->s.cl;
bio->bi_private = &io->cl;
bio->bi_io_vec = bio->bi_inline_vecs;
bch_bio_map(bio, NULL);
}
static void write_moving(struct closure *cl)
{
struct search *s = container_of(cl, struct search, cl);
struct moving_io *io = container_of(s, struct moving_io, s);
struct moving_io *io = container_of(cl, struct moving_io, cl);
struct data_insert_op *op = &io->op;
if (!s->error) {
if (!op->error) {
moving_init(io);
io->bio.bio.bi_sector = KEY_START(&io->w->key);
s->op.lock = -1;
s->write_prio = 1;
s->cache_bio = &io->bio.bio;
io->bio.bio.bi_sector = KEY_START(&io->w->key);
op->write_prio = 1;
op->bio = &io->bio.bio;
s->writeback = KEY_DIRTY(&io->w->key);
s->csum = KEY_CSUM(&io->w->key);
op->writeback = KEY_DIRTY(&io->w->key);
op->csum = KEY_CSUM(&io->w->key);
bkey_copy(&s->replace_key, &io->w->key);
s->replace = true;
bkey_copy(&op->replace_key, &io->w->key);
op->replace = true;
closure_init(&s->btree, cl);
bch_data_insert(&s->btree);
closure_call(&op->cl, bch_data_insert, NULL, cl);
}
continue_at(cl, write_moving_finish, system_wq);
@@ -117,11 +116,10 @@ static void write_moving(struct closure *cl)
static void read_moving_submit(struct closure *cl)
{
struct search *s = container_of(cl, struct search, cl);
struct moving_io *io = container_of(s, struct moving_io, s);
struct moving_io *io = container_of(cl, struct moving_io, cl);
struct bio *bio = &io->bio.bio;
bch_submit_bbio(bio, s->c, &io->w->key, 0);
bch_submit_bbio(bio, io->op.c, &io->w->key, 0);
continue_at(cl, write_moving, system_wq);
}
@@ -151,8 +149,8 @@ static void read_moving(struct cache_set *c)
w->private = io;
io->w = w;
io->s.inode = KEY_INODE(&w->key);
io->s.c = c;
io->op.inode = KEY_INODE(&w->key);
io->op.c = c;
moving_init(io);
bio = &io->bio.bio;
@@ -166,7 +164,7 @@ static void read_moving(struct cache_set *c)
trace_bcache_gc_copy(&w->key);
down(&c->moving_in_flight);
closure_call(&io->s.cl, read_moving_submit, NULL, &cl);
closure_call(&io->cl, read_moving_submit, NULL, &cl);
}
if (0) {