linux/block
Tejun Heo dd831006d5 block: misc cleanups in barrier code
Make the following cleanups in preparation of barrier/flush update.

* blk_do_ordered() declaration is moved from include/linux/blkdev.h to
  block/blk.h.

* blk_do_ordered() now returns pointer to struct request, with %NULL
  meaning "try the next request" and ERR_PTR(-EAGAIN) "try again
  later".  The third case will be dropped with further changes.

* In the initialization of proxy barrier request, data direction is
  already set by init_request_from_bio().  Drop unnecessary explicit
  REQ_WRITE setting and move init_request_from_bio() above REQ_FUA
  flag setting.

* add_request() is collapsed into __make_request().

These changes don't make any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-09-10 12:35:36 +02:00
..
Kconfig blk-cgroup: config options re-arrangement 2010-04-26 19:27:56 +02:00
Kconfig.iosched blk-cgroup: config options re-arrangement 2010-04-26 19:27:56 +02:00
Makefile blkdev: move blkdev_issue helper functions to separate file 2010-04-28 19:47:36 +02:00
blk-barrier.c block: misc cleanups in barrier code 2010-09-10 12:35:36 +02:00
blk-cgroup.c Merge branch 'master' into for-2.6.35 2010-05-21 21:27:26 +02:00
blk-cgroup.h blk-cgroup: config options re-arrangement 2010-04-26 19:27:56 +02:00
blk-core.c block: misc cleanups in barrier code 2010-09-10 12:35:36 +02:00
blk-exec.c block: remove wrappers for request type/flags 2010-08-07 18:17:56 +02:00
blk-integrity.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
blk-ioc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
blk-iopoll.c tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
blk-lib.c block: add secure discard 2010-08-12 08:43:30 -07:00
blk-map.c block: unify flags for struct bio and struct request 2010-08-07 18:20:39 +02:00
blk-merge.c gcc-4.6: block: fix unused but set variables in blk-merge 2010-08-07 18:23:10 +02:00
blk-settings.c block: deprecate barrier and replace blk_queue_ordered() with blk_queue_flush() 2010-09-10 12:35:36 +02:00
blk-softirq.c generic-ipi: remove CSD_FLAG_WAIT 2009-02-25 14:13:44 +01:00
blk-sysfs.c block: add helpers for the trivial queue flag sysfs show/store entries 2010-08-07 18:13:50 +02:00
blk-tag.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
blk-timeout.c block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer 2010-04-21 17:42:08 +02:00
blk.h block: misc cleanups in barrier code 2010-09-10 12:35:36 +02:00
bsg.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
cfq-iosched.c block: unify flags for struct bio and struct request 2010-08-07 18:20:39 +02:00
cfq.h cfq: fix recursive call in cfq_blkiocg_update_completion_stats() 2010-06-21 09:10:55 +02:00
compat_ioctl.c block: add secure discard 2010-08-12 08:43:30 -07:00
deadline-iosched.c block: convert to pos and nr_sectors accessors 2009-05-11 09:50:54 +02:00
elevator.c block: add secure discard 2010-08-12 08:43:30 -07:00
genhd.c block: remove all rcu head initializations 2010-05-21 20:01:02 +02:00
ioctl.c block: add secure discard 2010-08-12 08:43:30 -07:00
noop-iosched.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
scsi_ioctl.c block/scsi_ioctl.c: quiet sparse noise 2009-11-04 09:10:33 +01:00