linux/block
James Bottomley 11c3e689f1 [SCSI] block: Introduce new blk_queue_update_dma_alignment interface
The purpose of this is to allow stacked alignment settings, with the
ultimate queue alignment being set to the largest alignment requirement
in the stack.

The reason for this is so that the SCSI mid-layer can relax the default
alignment requirements (which are basically causing a lot of superfluous
copying to go on in the SG_IO interface) while allowing transports,
devices or HBAs to add stricter limits if they need them.

Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:29:20 -06:00
..
Kconfig Only enable BLOCK_COMPAT if COMPAT is needed 2007-10-12 17:58:36 -07:00
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] Only include the compat ioctl code if CONFIG_BLOCK is set 2007-10-12 12:50:41 +02:00
as-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
blktrace.c blktrace: kill the unneeded initcall 2008-01-11 13:37:01 +01:00
bsg.c [SCSI] libsas, bsg: pass errors through correctly 2008-01-11 18:29:13 -06:00
cfq-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
compat_ioctl.c compat_ioctl: fix block device compat ioctl regression 2007-10-29 11:33:06 +01:00
deadline-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
elevator.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
genhd.c block: Fix memory leak in alloc_disk_node() 2007-11-27 09:19:40 +01:00
ioctl.c compat_ioctl: move common block ioctls to compat_blkdev_ioctl 2007-10-10 09:26:00 +02:00
ll_rw_blk.c [SCSI] block: Introduce new blk_queue_update_dma_alignment interface 2008-01-11 18:29:20 -06:00
noop-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
scsi_ioctl.c block: use jiffies conversion functions in scsi_ioctl.c 2007-12-18 08:29:28 +01:00