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Lars Ellenberg e3881a6816 [PATCH] md: pass down BIO_RW_SYNC in raid{1,10} 
md raidX make_request functions strip off the BIO_RW_SYNC flag, thus
introducing additional latency.

Fixing this in raid1 and raid10 seems to be straightforward enough.

For our particular usage case in DRBD, passing this flag improved some
initialization time from ~5 minutes to ~5 seconds.

Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Lars Ellenberg <lars@linbit.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2007-01-11 18:18:21 -08:00
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raid6test
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.gitignore
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Kconfig [CRYPTO] dm-crypt: Select CRYPTO_CBC 2006-12-10 10:18:57 -08:00
Makefile
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bitmap.c
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dm-bio-list.h [PATCH] dm: suspend: add noflush pushback 2006-12-08 08:29:09 -08:00
dm-bio-record.h
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dm-crypt.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm-emc.c
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dm-exception-store.c
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dm-hw-handler.c
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dm-hw-handler.h
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dm-io.c
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dm-io.h
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dm-ioctl.c [PATCH] dm: ioctl: add noflush suspend 2006-12-08 08:29:09 -08:00
dm-linear.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm-log.c [PATCH] dm: raid1: reset sync_search on resume 2006-12-08 08:29:09 -08:00
dm-log.h [PATCH] dm: log: rename complete_resync_work 2006-12-08 08:29:09 -08:00
dm-mpath.c [PATCH] dm: mpath: use noflush suspending 2006-12-08 08:29:09 -08:00
dm-mpath.h
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dm-path-selector.c
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dm-path-selector.h
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dm-raid1.c [PATCH] dm: log: rename complete_resync_work 2006-12-08 08:29:09 -08:00
dm-round-robin.c
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dm-snap.c [PATCH] make drivers/md/dm-snap.c:ksnapd static 2006-12-08 08:29:09 -08:00
dm-snap.h
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dm-stripe.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm-table.c
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dm-target.c
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dm-zero.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm.c [PATCH] dm: suspend: add noflush pushback 2006-12-08 08:29:09 -08:00
dm.h [PATCH] dm: suspend: add noflush pushback 2006-12-08 08:29:09 -08:00
faulty.c [PATCH] md: Don't assume that READ==0 and WRITE==1 - use the names explicitly 2006-12-13 09:05:48 -08:00
kcopyd.c
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kcopyd.h
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linear.c
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md.c [PATCH] md: fix a few problems with the interface (sysfs and ioctl) to md 2006-12-22 08:55:51 -08:00
mktables.c
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multipath.c
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raid0.c
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raid1.c [PATCH] md: pass down BIO_RW_SYNC in raid{1,10} 2007-01-11 18:18:21 -08:00
raid5.c [PATCH] md: Don't assume that READ==0 and WRITE==1 - use the names explicitly 2006-12-13 09:05:48 -08:00
raid6.h
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raid6algos.c
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raid6altivec.uc
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raid6int.uc
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raid6mmx.c
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raid6recov.c
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raid6sse1.c
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raid6sse2.c
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raid6x86.h
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raid10.c [PATCH] md: pass down BIO_RW_SYNC in raid{1,10} 2007-01-11 18:18:21 -08:00
unroll.pl
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xor.c
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