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28f13702f0
linux/drivers/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
..
aoe block: avoid duplicate calls to get_part() in disk stat code 2008-05-07 10:15:46 +02:00
paride block: use blk_rq_init() to initialize the request 2008-04-29 14:48:55 +02:00
amiflop.c [BLOCK] Get rid of request_queue_t typedef 2007-07-24 09:28:11 +02:00
ataflop.c Atari floppy: Rename disk_type to atari_disk_type 2008-02-06 10:41:10 -08:00
brd.c brd: modify ramdisk device to be able to manage partitions 2008-04-30 08:29:53 -07:00
cciss_cmd.h [PATCH] cciss: add support for 1024 logical volumes 2006-12-07 08:39:30 -08:00
cciss_scsi.c cciss: fix warning oops on rmmod of driver 2008-04-21 09:50:09 +02:00
cciss_scsi.h cciss: update copyright notices 2007-10-29 11:33:05 +01:00
cciss.c cciss: assign PDE->data before gluing PDE into /proc tree 2008-05-01 08:04:02 -07:00
cciss.h [PATCH] cciss: add support for 1024 logical volumes 2006-12-07 08:39:30 -08:00
cpqarray.c proc: remove proc_root_driver 2008-04-29 08:06:18 -07:00
cpqarray.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cryptoloop.c drivers: Remove unnecessary inclusions of asm/semaphore.h 2008-04-18 22:16:32 -04:00
DAC960.c blk_end_request: changing DAC960 (take 4) 2008-01-28 10:36:04 +01:00
DAC960.h Fix DAC960 driver on machines which don't support 64-bit DMA 2007-09-11 17:21:19 -07:00
floppy.c drivers/block/floppy.c: replace init_module&cleanup_module with module_init&module_exit 2008-04-29 08:06:03 -07:00
ida_cmd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ida_ioctl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig The ps2esdi driver was marked as BROKEN more than two years ago due to being 2008-03-17 09:03:05 +01:00
loop.c block: make queue flags non-atomic 2008-04-29 14:48:33 +02:00
Makefile The ps2esdi driver was marked as BROKEN more than two years ago due to being 2008-03-17 09:03:05 +01:00
nbd.c Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2008-04-29 08:18:03 -07:00
pktcdvd.c Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2008-04-29 08:18:03 -07:00
ps3disk.c block: no need to initialize rq->cmd in prepare_flush_fn hook 2008-04-29 14:48:54 +02:00
smart1,2.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sunvdc.c block/sunvdc.c:print_version() must be __devinit 2008-02-01 09:26:32 +01:00
swim3.c Fix compile of swim3 as module 2008-02-14 20:58:04 -08:00
sx8.c block: replace remaining __FUNCTION__ occurrences 2008-04-21 09:51:04 +02:00
ub.c ub: Cosmetics 2008-05-02 10:25:52 -07:00
umem.c Cleanup umem driver: fix most checkpatch warnings, conform to kernel 2007-12-18 08:29:28 +01:00
umem.h drivers/block/umem: trim trailing whitespace 2007-10-10 09:25:59 +02:00
viodasd.c [POWERPC] Use FIELD_SIZEOF in drivers/block/viodasd.c 2008-04-01 20:43:10 +11:00
virtio_blk.c virtio: add virtio disk geometry feature 2008-05-02 21:50:51 +10:00
xd.c [BLOCK] Get rid of request_queue_t typedef 2007-07-24 09:28:11 +02:00
xd.h [BLOCK] Get rid of request_queue_t typedef 2007-07-24 09:28:11 +02:00
xen-blkfront.c xen: make blkif_getgeo static 2008-04-29 08:06:06 -07:00
xsysace.c [POWERPC] Xilinx: Update compatible to use values generated by BSP generator. 2008-02-06 10:23:21 -07:00
z2ram.c [BLOCK] Get rid of request_queue_t typedef 2007-07-24 09:28:11 +02:00