]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
md: allow parallel resync of md-devices.
authorBernd Schubert <bs@q-leap.de>
Fri, 23 May 2008 20:04:38 +0000 (13:04 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 24 May 2008 16:56:10 +0000 (09:56 -0700)
commit90b08710e41a07d4ff0fb8940dcce3a552991a56
tree8e45d1c6d9b4020099fd36781065bf8b8fdb76e4
parent4f54b0e9485644a3c5fca2ae43bcbe7376825747
md: allow parallel resync of md-devices.

In some configurations, a raid6 resync can be limited by CPU speed
(Calculating P and Q and moving data) rather than by device speed.  In
these cases there is nothing to be gained byt serialising resync of arrays
that share a device, and doing the resync in parallel can provide benefit.
 So add a sysfs tunable to flag an array as being allowed to resync in
parallel with other arrays that use (a different part of) the same device.

Signed-off-by: Bernd Schubert <bs@q-leap.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/md/md.c
include/linux/raid/md_k.h