Christoph Hellwig 67efc92580 block: allow large discard requests ...

Currently we set the bio size to the byte equivalent of the blocks to
be trimmed when submitting the initial DISCARD ioctl.  That means it
is subject to the max_hw_sectors limitation of the HBA which is
much lower than the size of a DISCARD request we can support.
Add a separate max_discard_sectors tunable to limit the size for discard
requests.

We limit the max discard request size in bytes to 32bit as that is the
limit for bio->bi_size.  This could be much larger if we had a way to pass
that information through the block layer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

2009-10-01 21:19:34 +02:00

..

as-iosched.c

percpu: clean up percpu variable definitions

2009-06-24 15:13:48 +09:00

blk-barrier.c

block: allow large discard requests

2009-10-01 21:19:34 +02:00

blk-core.c

block: allow large discard requests

2009-10-01 21:19:34 +02:00

blk-exec.c

block: don't set REQ_NOMERGE unnecessarily

2009-04-28 07:37:33 +02:00

blk-integrity.c

block: fix improper kobject release in blk_integrity_unregister

2009-07-28 09:11:14 +02:00

blk-ioc.c

block: prevent possible io_context->refcount overflow

2009-06-10 23:07:15 +02:00

blk-iopoll.c

block: use interrupts disabled version of raise_softirq_irqoff()

2009-09-11 14:33:32 +02:00

blk-map.c

block: Use accessor functions for queue limits

2009-05-22 23:22:54 +02:00

blk-merge.c

Seperate read and write statistics of in_flight requests

2009-09-14 08:24:52 +02:00

blk-settings.c

block: allow large discard requests

2009-10-01 21:19:34 +02:00

blk-softirq.c

generic-ipi: remove CSD_FLAG_WAIT

2009-02-25 14:13:44 +01:00

blk-sysfs.c

Add missing blk_trace_remove_sysfs to be in pair with blk_trace_init_sysfs

2009-10-01 21:15:46 +02:00

blk-tag.c

block: change the tag sync vs async restriction logic

2009-05-20 08:54:31 +02:00

blk-timeout.c

block: clean up misc stuff after block layer timeout conversion

2009-04-28 07:37:34 +02:00

blk.h

block: implement mixed merge of different failfast requests

2009-09-11 14:33:30 +02:00

bsg.c

Driver-Core: extend devnode callbacks to provide permissions

2009-09-19 12:50:38 -07:00

cfq-iosched.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2009-09-15 09:39:44 -07:00

compat_ioctl.c

Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block

2009-06-11 11:10:35 -07:00

deadline-iosched.c

block: convert to pos and nr_sectors accessors

2009-05-11 09:50:54 +02:00

elevator.c

bio: first step in sanitizing the bio->bi_rw flag testing

2009-09-11 14:33:31 +02:00

genhd.c

Driver-Core: extend devnode callbacks to provide permissions

2009-09-19 12:50:38 -07:00

ioctl.c

block: use blkdev_issue_discard in blk_ioctl_discard

2009-09-14 08:24:53 +02:00

Kconfig

Make SCSI SG v4 driver enabled by default and remove EXPERIMENTAL dependency, since udev depends on BSG

2009-08-04 22:10:17 +02:00

Kconfig.iosched

update I/O sched Kconfig help texts - CFQ is now default, not AS.

2007-02-17 20:08:22 +01:00

Makefile

block: add blk-iopoll, a NAPI like approach for block devices

2009-09-11 14:33:31 +02:00

noop-iosched.c

block: get rid of elevator_t typedef

2008-12-29 08:29:50 +01:00

scsi_ioctl.c

block: call blk_scsi_ioctl_init()

2009-07-10 20:31:53 +02:00