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Kiyoshi Ueda 82124d6035 block: add request submission interface 
This patch adds blk_insert_cloned_request(), a generic request
submission interface for request stacking drivers.
Request-based dm will use it to submit their clones to underlying
devices.

blk_rq_check_limits() is also added because it is possible that
the lower queue has stronger limitations than the upper queue
if multiple drivers are stacking at request-level.
Not only for blk_insert_cloned_request()'s internal use, the function
will be used by request-based dm when the queue limitation is
modified (e.g. by replacing dm's table).

Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-09 08:56:18 +02:00
..
as-iosched.c block: make kblockd_schedule_work() take the queue as parameter 2008-10-09 08:56:09 +02:00
blk-barrier.c block: adjust blkdev_issue_discard for swap 2008-10-09 08:56:17 +02:00
blk-core.c block: add request submission interface 2008-10-09 08:56:18 +02:00
blk-exec.c Add some block/ source files to the kernel-api docbook. Fix kernel-doc notation in them as needed. Fix changed function parameter names. Fix typos/spellos. In comments, change REQ_SPECIAL to REQ_TYPE_SPECIAL and REQ_BLOCK_PC to REQ_TYPE_BLOCK_PC. 2008-10-09 08:56:03 +02:00
blk-integrity.c block: implement and use {disk|part}_to_dev() 2008-10-09 08:56:07 +02:00
blk-ioc.c cfq-iosched: fix RCU race in the cfq io_context destructor handling 2008-05-07 09:28:57 +02:00
blk-map.c block: make blk_rq_map_user take a NULL user-space buffer 2008-10-09 08:56:11 +02:00
blk-merge.c block: inherit CPU completion on bio->rq and rq->rq merges 2008-10-09 08:56:09 +02:00
blk-settings.c block: unify request timeout handling 2008-10-09 08:56:13 +02:00
blk-softirq.c block: add fault injection mechanism for faking request timeouts 2008-10-09 08:56:17 +02:00
blk-sysfs.c block: add support for IO CPU affinity 2008-10-09 08:56:09 +02:00
blk-tag.c Add some block/ source files to the kernel-api docbook. Fix kernel-doc notation in them as needed. Fix changed function parameter names. Fix typos/spellos. In comments, change REQ_SPECIAL to REQ_TYPE_SPECIAL and REQ_BLOCK_PC to REQ_TYPE_BLOCK_PC. 2008-10-09 08:56:03 +02:00
blk-timeout.c block: use rq complete marking in blk_abort_request() 2008-10-09 08:56:17 +02:00
blk.h block: add fault injection mechanism for faking request timeouts 2008-10-09 08:56:17 +02:00
blktrace.c blktrace: simplify flags handling in __blk_add_trace 2008-10-09 08:56:01 +02:00
bsg.c block: introduce struct rq_map_data to use reserved pages 2008-10-09 08:56:10 +02:00
cfq-iosched.c cfq-iosched: fix queue depth detection 2008-10-09 08:56:09 +02:00
cmd-filter.c block: move holder_dir from disk to part0 2008-10-09 08:56:08 +02:00
compat_ioctl.c Add BLKDISCARD ioctl to allow userspace to discard sectors 2008-10-09 08:56:02 +02:00
deadline-iosched.c deadline-iosched: non-functional fixes 2008-10-09 08:56:03 +02:00
elevator.c block: Add interface to abort queued requests 2008-10-09 08:56:13 +02:00
genhd.c block: add fault injection mechanism for faking request timeouts 2008-10-09 08:56:17 +02:00
ioctl.c block: make partition array dynamic 2008-10-09 08:56:08 +02:00
Kconfig block: Block layer data integrity support 2008-07-03 13:21:13 +02:00
Kconfig.iosched
Makefile block: unify request timeout handling 2008-10-09 08:56:13 +02:00
noop-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
scsi_ioctl.c block: introduce struct rq_map_data to use reserved pages 2008-10-09 08:56:10 +02:00