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linux/block
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Jens Axboe 28f13702f0 block: avoid duplicate calls to get_part() in disk stat code 
get_part() is fairly expensive, as it O(N) loops over partitions
to find the right one. In lots of normal IO paths we end up looking
up the partition twice, to make matters even worse. Change the
stat add code to accept a passed in partition instead.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-05-07 10:15:46 +02:00
..
as-iosched.c block: kill swap_io_context() 2008-02-01 11:34:49 +01:00
blk-barrier.c block: remove remaining __FUNCTION__ occurrences 2008-05-01 08:04:02 -07:00
blk-core.c block: avoid duplicate calls to get_part() in disk stat code 2008-05-07 10:15:46 +02:00
blk-exec.c block: make core bits checkpatch compliant 2008-02-01 09:26:33 +01:00
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: add dma alignment and padding support to blk_rq_map_kern 2008-04-29 09:50:34 +02:00
blk-merge.c block: get rid of likely/unlikely predictions in merge logic 2008-05-07 09:33:55 +02:00
blk-settings.c block: remove remaining __FUNCTION__ occurrences 2008-05-01 08:04:02 -07:00
blk-sysfs.c block: sysfs store function needs to grab queue_lock and use queue_flag_*() 2008-05-07 09:09:39 +02:00
blk-tag.c block: adjust tagging function queue bit locking 2008-05-07 09:27:43 +02:00
blk.h block: rename and export rq_init() 2008-04-29 14:48:55 +02:00
blktrace.c blktrace: Add blktrace ioctls to SCSI generic devices 2008-01-28 10:04:46 +01:00
bsg.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-05-02 13:52:35 -07:00
cfq-iosched.c cfq-iosched: make io priorities inherit CPU scheduling class as well as nice 2008-05-07 09:51:23 +02:00
compat_ioctl.c ide: remove broken/dangerous HDIO_[UNREGISTER,SCAN]_HWIF ioctls (take 3) 2008-04-18 00:46:24 +02:00
deadline-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
elevator.c block: remove remaining __FUNCTION__ occurrences 2008-05-01 08:04:02 -07:00
genhd.c mm: bdi: export BDI attributes in sysfs 2008-04-30 08:29:49 -07:00
ioctl.c compat_ioctl: move common block ioctls to compat_blkdev_ioctl 2007-10-10 09:26:00 +02:00
Kconfig Kconfig: clean up block/Kconfig help descriptions 2008-04-21 09:51:04 +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: ll_rw_blk.c split, add blk-merge.c 2008-01-29 21:55:12 +01:00
noop-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
scsi_ioctl.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-05-02 13:52:35 -07:00