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Jens Axboe da77526502 [PATCH] cfq-iosched: don't allow sync merges across queues 
Currently we allow any merge, even if the io originates from different
processes. This can cause really bad starvation and unfairness, if those
ios happen to be synchronous (reads or direct writes).

So add a allow_merge hook to the io scheduler ops, so an io scheduler can
help decide whether a bio/process combination may be merged with an
existing request.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2006-12-20 11:04:12 +01:00
..
acpi
asm-alpha [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-arm Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2006-12-13 15:58:32 -08:00
asm-arm26 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-avr32 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-cris [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-frv [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-generic Remove stack unwinder for now 2006-12-15 08:47:51 -08:00
asm-h8300 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-i386 Remove stack unwinder for now 2006-12-15 08:47:51 -08:00
asm-ia64 Merge branch 'release' of master.kernel.org:/home/ftp/pub/scm/linux/kernel/git/aegl/linux-2.6 2006-12-13 15:57:58 -08:00
asm-m32r [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-m68k [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-m68knommu [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-mips [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-parisc [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-powerpc [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-ppc
asm-s390 [S390] Fix reboot hang on LPARs 2006-12-15 17:18:22 +01:00
asm-sh [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-sh64 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-sparc [SPARC]: Make bitops use same spinlocks as atomics. 2006-12-17 16:18:47 -08:00
asm-sparc64 [SPARC64]: Mirror x86_64's PERCPU_ENOUGH_ROOM definition. 2006-12-17 14:06:59 -08:00
asm-um
asm-v850 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-x86_64 Remove stack unwinder for now 2006-12-15 08:47:51 -08:00
asm-xtensa [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
crypto
keys
linux [PATCH] cfq-iosched: don't allow sync merges across queues 2006-12-20 11:04:12 +01:00
math-emu
media
mtd
net [IPV6]: Make fib6_node subtree depend on IPV6_SUBTREES 2006-12-13 16:48:31 -08:00
pcmcia
rdma IB: Fix ib_dma_alloc_coherent() wrapper 2006-12-15 13:57:26 -08:00
rxrpc
scsi
sound
video [PATCH] sstfb: add sysfs interface 2006-12-13 09:05:55 -08:00
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