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authorLinus Torvalds <torvalds@linux-foundation.org>2011-11-04 17:06:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-04 17:06:58 -0700
commitb4fdcb02f1e39c27058a885905bd0277370ba441 (patch)
treefd4cfd1994f21f44afe5e7904681fb5ac09f81b8 /drivers/md/dm.c
parent044595d4e448305fbaec472eb7d22636d24e7d8c (diff)
parent6dd9ad7df2019b1e33a372a501907db293ebcd0d (diff)
Merge branch 'for-3.2/core' of git://git.kernel.dk/linux-block
* 'for-3.2/core' of git://git.kernel.dk/linux-block: (29 commits) block: don't call blk_drain_queue() if elevator is not up blk-throttle: use queue_is_locked() instead of lockdep_is_held() blk-throttle: Take blkcg->lock while traversing blkcg->policy_list blk-throttle: Free up policy node associated with deleted rule block: warn if tag is greater than real_max_depth. block: make gendisk hold a reference to its queue blk-flush: move the queue kick into blk-flush: fix invalid BUG_ON in blk_insert_flush block: Remove the control of complete cpu from bio. block: fix a typo in the blk-cgroup.h file block: initialize the bounce pool if high memory may be added later block: fix request_queue lifetime handling by making blk_queue_cleanup() properly shutdown block: drop @tsk from attempt_plug_merge() and explain sync rules block: make get_request[_wait]() fail if queue is dead block: reorganize throtl_get_tg() and blk_throtl_bio() block: reorganize queue draining block: drop unnecessary blk_get/put_queue() in scsi_cmd_ioctl() and blk_get_tg() block: pass around REQ_* flags instead of broken down booleans during request alloc/free block: move blk_throtl prototypes to block/blk.h block: fix genhd refcounting in blkio_policy_parse_and_set() ... Fix up trivial conflicts due to "mddev_t" -> "struct mddev" conversion and making the request functions be of type "void" instead of "int" in - drivers/md/{faulty.c,linear.c,md.c,md.h,multipath.c,raid0.c,raid1.c,raid10.c,raid5.c} - drivers/staging/zram/zram_drv.c
Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r--drivers/md/dm.c25
1 files changed, 7 insertions, 18 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 6b6616a41ba..4720f68f817 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -192,9 +192,6 @@ struct mapped_device {
/* forced geometry settings */
struct hd_geometry geometry;
- /* For saving the address of __make_request for request based dm */
- make_request_fn *saved_make_request_fn;
-
/* sysfs handle */
struct kobject kobj;
@@ -1403,7 +1400,7 @@ out:
* The request function that just remaps the bio built up by
* dm_merge_bvec.
*/
-static int _dm_request(struct request_queue *q, struct bio *bio)
+static void _dm_request(struct request_queue *q, struct bio *bio)
{
int rw = bio_data_dir(bio);
struct mapped_device *md = q->queuedata;
@@ -1424,19 +1421,12 @@ static int _dm_request(struct request_queue *q, struct bio *bio)
queue_io(md, bio);
else
bio_io_error(bio);
- return 0;
+ return;
}
__split_and_process_bio(md, bio);
up_read(&md->io_lock);
- return 0;
-}
-
-static int dm_make_request(struct request_queue *q, struct bio *bio)
-{
- struct mapped_device *md = q->queuedata;
-
- return md->saved_make_request_fn(q, bio); /* call __make_request() */
+ return;
}
static int dm_request_based(struct mapped_device *md)
@@ -1444,14 +1434,14 @@ static int dm_request_based(struct mapped_device *md)
return blk_queue_stackable(md->queue);
}
-static int dm_request(struct request_queue *q, struct bio *bio)
+static void dm_request(struct request_queue *q, struct bio *bio)
{
struct mapped_device *md = q->queuedata;
if (dm_request_based(md))
- return dm_make_request(q, bio);
-
- return _dm_request(q, bio);
+ blk_queue_bio(q, bio);
+ else
+ _dm_request(q, bio);
}
void dm_dispatch_request(struct request *rq)
@@ -2191,7 +2181,6 @@ static int dm_init_request_based_queue(struct mapped_device *md)
return 0;
md->queue = q;
- md->saved_make_request_fn = md->queue->make_request_fn;
dm_init_md_queue(md);
blk_queue_softirq_done(md->queue, dm_softirq_done);
blk_queue_prep_rq(md->queue, dm_prep_fn);