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-rw-r--r--block/bio.c12
-rw-r--r--block/blk-core.c31
-rw-r--r--drivers/md/dm.c29
-rw-r--r--drivers/md/raid1.c3
-rw-r--r--drivers/md/raid10.c3
5 files changed, 48 insertions, 30 deletions
diff --git a/block/bio.c b/block/bio.c
index 46e2cc1d4016..14263fab94d3 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -373,10 +373,14 @@ static void punt_bios_to_rescuer(struct bio_set *bs)
bio_list_init(&punt);
bio_list_init(&nopunt);
- while ((bio = bio_list_pop(current->bio_list)))
+ while ((bio = bio_list_pop(&current->bio_list[0])))
bio_list_add(bio->bi_pool == bs ? &punt : &nopunt, bio);
+ current->bio_list[0] = nopunt;
- *current->bio_list = nopunt;
+ bio_list_init(&nopunt);
+ while ((bio = bio_list_pop(&current->bio_list[1])))
+ bio_list_add(bio->bi_pool == bs ? &punt : &nopunt, bio);
+ current->bio_list[1] = nopunt;
spin_lock(&bs->rescue_lock);
bio_list_merge(&bs->rescue_list, &punt);
@@ -464,7 +468,9 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
* we retry with the original gfp_flags.
*/
- if (current->bio_list && !bio_list_empty(current->bio_list))
+ if (current->bio_list &&
+ (!bio_list_empty(&current->bio_list[0]) ||
+ !bio_list_empty(&current->bio_list[1])))
gfp_mask &= ~__GFP_DIRECT_RECLAIM;
p = mempool_alloc(bs->bio_pool, gfp_mask);
diff --git a/block/blk-core.c b/block/blk-core.c
index 7a58a22d1595..ef083e7a37c5 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2021,7 +2021,14 @@ end_io:
*/
blk_qc_t generic_make_request(struct bio *bio)
{
- struct bio_list bio_list_on_stack;
+ /*
+ * bio_list_on_stack[0] contains bios submitted by the current
+ * make_request_fn.
+ * bio_list_on_stack[1] contains bios that were submitted before
+ * the current make_request_fn, but that haven't been processed
+ * yet.
+ */
+ struct bio_list bio_list_on_stack[2];
blk_qc_t ret = BLK_QC_T_NONE;
if (!generic_make_request_checks(bio))
@@ -2038,7 +2045,7 @@ blk_qc_t generic_make_request(struct bio *bio)
* should be added at the tail
*/
if (current->bio_list) {
- bio_list_add(current->bio_list, bio);
+ bio_list_add(&current->bio_list[0], bio);
goto out;
}
@@ -2057,17 +2064,17 @@ blk_qc_t generic_make_request(struct bio *bio)
* bio_list, and call into ->make_request() again.
*/
BUG_ON(bio->bi_next);
- bio_list_init(&bio_list_on_stack);
- current->bio_list = &bio_list_on_stack;
+ bio_list_init(&bio_list_on_stack[0]);
+ current->bio_list = bio_list_on_stack;
do {
struct request_queue *q = bdev_get_queue(bio->bi_bdev);
if (likely(blk_queue_enter(q, __GFP_DIRECT_RECLAIM) == 0)) {
- struct bio_list lower, same, hold;
+ struct bio_list lower, same;
/* Create a fresh bio_list for all subordinate requests */
- hold = bio_list_on_stack;
- bio_list_init(&bio_list_on_stack);
+ bio_list_on_stack[1] = bio_list_on_stack[0];
+ bio_list_init(&bio_list_on_stack[0]);
ret = q->make_request_fn(q, bio);
@@ -2077,19 +2084,19 @@ blk_qc_t generic_make_request(struct bio *bio)
*/
bio_list_init(&lower);
bio_list_init(&same);
- while ((bio = bio_list_pop(&bio_list_on_stack)) != NULL)
+ while ((bio = bio_list_pop(&bio_list_on_stack[0])) != NULL)
if (q == bdev_get_queue(bio->bi_bdev))
bio_list_add(&same, bio);
else
bio_list_add(&lower, bio);
/* now assemble so we handle the lowest level first */
- bio_list_merge(&bio_list_on_stack, &lower);
- bio_list_merge(&bio_list_on_stack, &same);
- bio_list_merge(&bio_list_on_stack, &hold);
+ bio_list_merge(&bio_list_on_stack[0], &lower);
+ bio_list_merge(&bio_list_on_stack[0], &same);
+ bio_list_merge(&bio_list_on_stack[0], &bio_list_on_stack[1]);
} else {
bio_io_error(bio);
}
- bio = bio_list_pop(current->bio_list);
+ bio = bio_list_pop(&bio_list_on_stack[0]);
} while (bio);
current->bio_list = NULL; /* deactivate */
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 397f0454100b..320eb3c4bb6b 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1481,26 +1481,29 @@ static void flush_current_bio_list(struct blk_plug_cb *cb, bool from_schedule)
struct dm_offload *o = container_of(cb, struct dm_offload, cb);
struct bio_list list;
struct bio *bio;
+ int i;
INIT_LIST_HEAD(&o->cb.list);
if (unlikely(!current->bio_list))
return;
- list = *current->bio_list;
- bio_list_init(current->bio_list);
-
- while ((bio = bio_list_pop(&list))) {
- struct bio_set *bs = bio->bi_pool;
- if (unlikely(!bs) || bs == fs_bio_set) {
- bio_list_add(current->bio_list, bio);
- continue;
+ for (i = 0; i < 2; i++) {
+ list = current->bio_list[i];
+ bio_list_init(&current->bio_list[i]);
+
+ while ((bio = bio_list_pop(&list))) {
+ struct bio_set *bs = bio->bi_pool;
+ if (unlikely(!bs) || bs == fs_bio_set) {
+ bio_list_add(&current->bio_list[i], bio);
+ continue;
+ }
+
+ spin_lock(&bs->rescue_lock);
+ bio_list_add(&bs->rescue_list, bio);
+ queue_work(bs->rescue_workqueue, &bs->rescue_work);
+ spin_unlock(&bs->rescue_lock);
}
-
- spin_lock(&bs->rescue_lock);
- bio_list_add(&bs->rescue_list, bio);
- queue_work(bs->rescue_workqueue, &bs->rescue_work);
- spin_unlock(&bs->rescue_lock);
}
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 515554c7365b..9be39988bf06 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -877,7 +877,8 @@ static sector_t wait_barrier(struct r1conf *conf, struct bio *bio)
((conf->start_next_window <
conf->next_resync + RESYNC_SECTORS) &&
current->bio_list &&
- !bio_list_empty(current->bio_list))),
+ (!bio_list_empty(&current->bio_list[0]) ||
+ !bio_list_empty(&current->bio_list[1])))),
conf->resync_lock);
conf->nr_waiting--;
}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index a92979e704e3..e5ee4e9e0ea5 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -946,7 +946,8 @@ static void wait_barrier(struct r10conf *conf)
!conf->barrier ||
(conf->nr_pending &&
current->bio_list &&
- !bio_list_empty(current->bio_list)),
+ (!bio_list_empty(&current->bio_list[0]) ||
+ !bio_list_empty(&current->bio_list[1]))),
conf->resync_lock);
conf->nr_waiting--;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-08 00:07:26 +0000