[PATCH 25/45] bcache: use bio op accessors

mchristi
2016-06-05T19:33:32Z

Separate the op from the rq_flag_bits and have bcache
set/get the bio using bio_set_op_attrs/bio_op.

Signed-off-by: Mike Christie <mchristi@redhat.com>
---
drivers/md/bcache/btree.c | 4 ++--
drivers/md/bcache/debug.c | 4 ++--
drivers/md/bcache/journal.c | 7 ++++---
drivers/md/bcache/movinggc.c | 2 +-
drivers/md/bcache/request.c | 14 +++++++-------
drivers/md/bcache/super.c | 24 +++++++++++++-----------
drivers/md/bcache/writeback.c | 4 ++--
7 files changed, 31 insertions(+), 28 deletions(-)

diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index eab505e..76f7534 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -294,10 +294,10 @@ static void bch_btree_node_read(struct btree *b)
closure_init_stack(&cl);

bio = bch_bbio_alloc(b->c);
- bio->bi_rw = REQ_META|READ_SYNC;
bio->bi_iter.bi_size = KEY_SIZE(&b->key) << 9;
bio->bi_end_io = btree_node_read_endio;
bio->bi_private = &cl;
+ bio_set_op_attrs(bio, REQ_OP_READ, REQ_META|READ_SYNC);

bch_bio_map(bio, b->keys.set[0].data);

@@ -396,8 +396,8 @@ static void do_btree_node_write(struct btree *b)

b->bio->bi_end_io = btree_node_write_endio;
b->bio->bi_private = cl;
- b->bio->bi_rw = REQ_META|WRITE_SYNC|REQ_FUA;
b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c));
+ bio_set_op_attrs(b->bio, REQ_OP_WRITE, REQ_META|WRITE_SYNC|REQ_FUA);
bch_bio_map(b->bio, i);

/*
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index 52b6bcf..c28df164 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -52,7 +52,7 @@ void bch_btree_verify(struct btree *b)
bio->bi_bdev = PTR_CACHE(b->c, &b->key, 0)->bdev;
bio->bi_iter.bi_sector = PTR_OFFSET(&b->key, 0);
bio->bi_iter.bi_size = KEY_SIZE(&v->key) << 9;
- bio->bi_rw = REQ_META|READ_SYNC;
+ bio_set_op_attrs(bio, REQ_OP_READ, REQ_META|READ_SYNC);
bch_bio_map(bio, sorted);

submit_bio_wait(bio);
@@ -114,7 +114,7 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
check = bio_clone(bio, GFP_NOIO);
if (!check)
return;
- check->bi_rw |= READ_SYNC;
+ bio_set_op_attrs(check, REQ_OP_READ, READ_SYNC);

if (bio_alloc_pages(check, GFP_NOIO))
goto out_put;
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index af3f9f7..a3c3b30 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -54,11 +54,11 @@ reread: left = ca->sb.bucket_size - offset;
bio_reset(bio);
bio->bi_iter.bi_sector = bucket + offset;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = READ;
bio->bi_iter.bi_size = len << 9;

bio->bi_end_io = journal_read_endio;
bio->bi_private = &cl;
+ bio_set_op_attrs(bio, REQ_OP_READ, 0);
bch_bio_map(bio, data);

closure_bio_submit(bio, &cl);
@@ -449,10 +449,10 @@ static void do_journal_discard(struct cache *ca)
atomic_set(&ja->discard_in_flight, DISCARD_IN_FLIGHT);

bio_init(bio);
+ bio_set_op_attrs(bio, REQ_OP_DISCARD, 0);
bio->bi_iter.bi_sector = bucket_to_sector(ca->set,
ca->sb.d[ja->discard_idx]);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_DISCARD;
bio->bi_max_vecs = 1;
bio->bi_io_vec = bio->bi_inline_vecs;
bio->bi_iter.bi_size = bucket_bytes(ca);
@@ -626,11 +626,12 @@ static void journal_write_unlocked(struct closure *cl)
bio_reset(bio);
bio->bi_iter.bi_sector = PTR_OFFSET(k, i);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
bio->bi_iter.bi_size = sectors << 9;

bio->bi_end_io = journal_write_endio;
bio->bi_private = w;
+ bio_set_op_attrs(bio, REQ_OP_WRITE,
+ REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA);
bch_bio_map(bio, w->data);

trace_bcache_journal_write(bio);
diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index b929fc9..1881319 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -163,7 +163,7 @@ static void read_moving(struct cache_set *c)
moving_init(io);
bio = &io->bio.bio;

- bio->bi_rw = READ;
+ bio_set_op_attrs(bio, REQ_OP_READ, 0);
bio->bi_end_io = read_moving_endio;

if (bio_alloc_pages(bio, GFP_KERNEL))
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 6b85a23..016b0aa 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -253,7 +253,7 @@ static void bch_data_insert_start(struct closure *cl)
trace_bcache_cache_insert(k);
bch_keylist_push(&op->insert_keys);

- n->bi_rw |= REQ_WRITE;
+ bio_set_op_attrs(n, REQ_OP_WRITE, 0);
bch_submit_bbio(n, op->c, k, 0);
} while (n != bio);

@@ -378,7 +378,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)

if (test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) ||
c->gc_stats.in_use > CUTOFF_CACHE_ADD ||
- (bio->bi_rw & REQ_DISCARD))
+ (bio_op(bio) == REQ_OP_DISCARD))
goto skip;

if (mode == CACHE_MODE_NONE ||
@@ -899,7 +899,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
* But check_overlapping drops dirty keys for which io hasn't started,
* so we still want to call it.
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio_op(bio) == REQ_OP_DISCARD)
s->iop.bypass = true;

if (should_writeback(dc, s->orig_bio,
@@ -913,7 +913,7 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
s->iop.bio = s->orig_bio;
bio_get(s->iop.bio);

- if (!(bio->bi_rw & REQ_DISCARD) ||
+ if ((bio_op(bio) != REQ_OP_DISCARD) ||
blk_queue_discard(bdev_get_queue(dc->bdev)))
closure_bio_submit(bio, cl);
} else if (s->iop.writeback) {
@@ -925,10 +925,10 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);

- flush->bi_rw = WRITE_FLUSH;
flush->bi_bdev = bio->bi_bdev;
flush->bi_end_io = request_endio;
flush->bi_private = cl;
+ bio_set_op_attrs(flush, REQ_OP_WRITE, WRITE_FLUSH);

closure_bio_submit(flush, cl);
}
@@ -992,7 +992,7 @@ static blk_qc_t cached_dev_make_request(struct request_queue *q,
cached_dev_read(dc, s);
}
} else {
- if ((bio->bi_rw & REQ_DISCARD) &&
+ if ((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
bio_endio(bio);
else
@@ -1103,7 +1103,7 @@ static blk_qc_t flash_dev_make_request(struct request_queue *q,
&KEY(d->id, bio->bi_iter.bi_sector, 0),
&KEY(d->id, bio_end_sector(bio), 0));

- s->iop.bypass = (bio->bi_rw & REQ_DISCARD) != 0;
+ s->iop.bypass = (bio_op(bio) == REQ_OP_DISCARD) != 0;
s->iop.writeback = true;
s->iop.bio = bio;

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 1eb526a7..c944daf7 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -212,8 +212,8 @@ static void __write_super(struct cache_sb *sb, struct bio *bio)
unsigned i;

bio->bi_iter.bi_sector = SB_SECTOR;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META;
bio->bi_iter.bi_size = SB_SIZE;
+ bio_set_op_attrs(bio, REQ_OP_WRITE, REQ_SYNC|REQ_META);
bch_bio_map(bio, NULL);

out->offset = cpu_to_le64(sb->offset);
@@ -333,7 +333,7 @@ static void uuid_io_unlock(struct closure *cl)
up(&c->uuid_write_mutex);
}

-static void uuid_io(struct cache_set *c, unsigned long rw,
+static void uuid_io(struct cache_set *c, int op, unsigned long op_flags,
struct bkey *k, struct closure *parent)
{
struct closure *cl = &c->uuid_write;
@@ -348,21 +348,22 @@ static void uuid_io(struct cache_set *c, unsigned long rw,
for (i = 0; i < KEY_PTRS(k); i++) {
struct bio *bio = bch_bbio_alloc(c);

- bio->bi_rw = REQ_SYNC|REQ_META|rw;
+ bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
bio->bi_iter.bi_size = KEY_SIZE(k) << 9;

bio->bi_end_io = uuid_endio;
bio->bi_private = cl;
+ bio_set_op_attrs(bio, op, REQ_SYNC|REQ_META|op_flags);
bch_bio_map(bio, c->uuids);

bch_submit_bbio(bio, c, k, i);

- if (!(rw & WRITE))
+ if (op != REQ_OP_WRITE)
break;
}

bch_extent_to_text(buf, sizeof(buf), k);
- pr_debug("%s UUIDs at %s", rw & REQ_WRITE ? "wrote" : "read", buf);
+ pr_debug("%s UUIDs at %s", op == REQ_OP_WRITE ? "wrote" : "read", buf);

for (u = c->uuids; u < c->uuids + c->nr_uuids; u++)
if (!bch_is_zero(u->uuid, 16))
@@ -381,7 +382,7 @@ static char *uuid_read(struct cache_set *c, struct jset *j, struct closure *cl)
return "bad uuid pointer";

bkey_copy(&c->uuid_bucket, k);
- uuid_io(c, READ_SYNC, k, cl);
+ uuid_io(c, REQ_OP_READ, READ_SYNC, k, cl);

if (j->version < BCACHE_JSET_VERSION_UUIDv1) {
struct uuid_entry_v0 *u0 = (void *) c->uuids;
@@ -426,7 +427,7 @@ static int __uuid_write(struct cache_set *c)
return 1;

SET_KEY_SIZE(&k.key, c->sb.bucket_size);
- uuid_io(c, REQ_WRITE, &k.key, &cl);
+ uuid_io(c, REQ_OP_WRITE, 0, &k.key, &cl);
closure_sync(&cl);

bkey_copy(&c->uuid_bucket, &k.key);
@@ -498,7 +499,8 @@ static void prio_endio(struct bio *bio)
closure_put(&ca->prio);
}

-static void prio_io(struct cache *ca, uint64_t bucket, unsigned long rw)
+static void prio_io(struct cache *ca, uint64_t bucket, int op,
+ unsigned long op_flags)
{
struct closure *cl = &ca->prio;
struct bio *bio = bch_bbio_alloc(ca->set);
@@ -507,11 +509,11 @@ static void prio_io(struct cache *ca, uint64_t bucket, unsigned long rw)

bio->bi_iter.bi_sector = bucket * ca->sb.bucket_size;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_SYNC|REQ_META|rw;
bio->bi_iter.bi_size = bucket_bytes(ca);

bio->bi_end_io = prio_endio;
bio->bi_private = ca;
+ bio_set_op_attrs(bio, op, REQ_SYNC|REQ_META|op_flags);
bch_bio_map(bio, ca->disk_buckets);

closure_bio_submit(bio, &ca->prio);
@@ -557,7 +559,7 @@ void bch_prio_write(struct cache *ca)
BUG_ON(bucket == -1);

mutex_unlock(&ca->set->bucket_lock);
- prio_io(ca, bucket, REQ_WRITE);
+ prio_io(ca, bucket, REQ_OP_WRITE, 0);
mutex_lock(&ca->set->bucket_lock);

ca->prio_buckets[i] = bucket;
@@ -599,7 +601,7 @@ static void prio_read(struct cache *ca, uint64_t bucket)
ca->prio_last_buckets[bucket_nr] = bucket;
bucket_nr++;

- prio_io(ca, bucket, READ_SYNC);
+ prio_io(ca, bucket, REQ_OP_READ, READ_SYNC);

if (p->csum != bch_crc64(&p->magic, bucket_bytes(ca) - 8))
pr_warn("bad csum reading priorities");
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 6012367..d9fd2a6 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -182,7 +182,7 @@ static void write_dirty(struct closure *cl)
struct keybuf_key *w = io->bio.bi_private;

dirty_init(w);
- io->bio.bi_rw = WRITE;
+ bio_set_op_attrs(&io->bio, REQ_OP_WRITE, 0);
io->bio.bi_iter.bi_sector = KEY_START(&w->key);
io->bio.bi_bdev = io->dc->bdev;
io->bio.bi_end_io = dirty_endio;
@@ -251,10 +251,10 @@ static void read_dirty(struct cached_dev *dc)
io->dc = dc;

dirty_init(w);
+ bio_set_op_attrs(&io->bio, REQ_OP_READ, 0);
io->bio.bi_iter.bi_sector = PTR_OFFSET(&w->key, 0);
io->bio.bi_bdev = PTR_CACHE(dc->disk.c,
&w->key, 0)->bdev;
- io->bio.bi_rw = READ;
io->bio.bi_end_io = read_dirty_endio;

if (bio_alloc_pages(&io->bio, GFP_KERNEL))