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[PATCH] md: define backing_dev_info.congested_fn for raid0 and linear
authorNeilBrown <neilb@suse.de>
Tue, 3 Oct 2006 08:15:53 +0000 (01:15 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Tue, 3 Oct 2006 15:04:18 +0000 (08:04 -0700)
commit26be34dc3a46be983352dd89683db374b0cb73fa
tree296ed9d019ac56d4a6ea0909f1cf11bdfd08a3e5tree | snapshot
parentc04be0aa82ff535e3676ab3e573957bdeef41879commit | diff
[PATCH] md: define backing_dev_info.congested_fn for raid0 and linear

Each backing_dev needs to be able to report whether it is congested, either by
modulating BDI_*_congested in ->state, or by defining a ->congested_fn.
md/raid did neither of these.  This patch add a congested_fn which simply
checks all component devices to see if they are congested.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
drivers/md/linear.c diff | blob | history
drivers/md/raid0.c diff | blob | history
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