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    SubjectRe: [PATCH] mm: Avoid possible deadlock caused by too_many_isolated()
    On 10/22/2010 12:55 AM, Wu Fengguang wrote:

    > Now !GFP_IOFS reclaims won't be waiting for GFP_IOFS reclaims to
    > progress. They will be blocked only when there are too many concurrent
    > !GFP_IOFS reclaims, however that's very unlikely because the IO-less
    > direct reclaims is able to progress much more faster, and they won't
    > deadlock each other. The threshold is raised high enough for them, so
    > that there can be sufficient parallel progress of !GFP_IOFS reclaims.
    >
    > CC: Torsten Kaiser<just.for.lkml@googlemail.com>
    > CC: Minchan Kim<minchan.kim@gmail.com>
    > Tested-by: NeilBrown<neilb@suse.de>
    > Acked-by: KOSAKI Motohiro<kosaki.motohiro@jp.fujitsu.com>
    > Signed-off-by: Wu Fengguang<fengguang.wu@intel.com>

    Acked-by: Rik van Riel <riel@redhat.com>

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