From: Andrea Arcangeli <andrea@cpushare.com>
To: linux-mm@kvack.org
Subject: [PATCH 13 of 13] congestion wait
Date: Tue, 08 Jan 2008 08:50:44 +0100 [thread overview]
Message-ID: <352591adebd643c51fe6.1199778644@v2.random> (raw)
In-Reply-To: <patchbomb.1199778631@v2.random>
# HG changeset patch
# User andrea@cpushare.com
# Date 1199701210 -3600
# Node ID 352591adebd643c51fe629c5ee343342f60b24f0
# Parent 74af3b1477511c7bd6a526b47195ddf95a5424dc
congestion wait
Don't block in congestion_wait if memdie is set.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -83,6 +83,9 @@ long congestion_wait(int rw, long timeou
DEFINE_WAIT(wait);
wait_queue_head_t *wqh = &congestion_wqh[rw];
+ if (unlikely(test_thread_flag(TIF_MEMDIE)))
+ return timeout;
+
prepare_to_wait(wqh, &wait, TASK_UNINTERRUPTIBLE);
ret = io_schedule_timeout(timeout);
finish_wait(wqh, &wait);
--
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prev parent reply other threads:[~2008-01-08 7:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-08 7:50 [PATCH 00 of 13] oom deadlock fixes # try 2 Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 01 of 13] limit shrink zone scanning Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 02 of 13] avoid oom deadlock in nfs_create_request Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 03 of 13] prevent oom deadlocks during read/write operations Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 04 of 13] avoid selecting already killed tasks Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 05 of 13] reduce the probability of an OOM livelock Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 06 of 13] balance_pgdat doesn't return the number of pages freed Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 07 of 13] don't depend on PF_EXITING tasks to go away Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 08 of 13] stop useless vm trashing while we wait the TIF_MEMDIE task to exit Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 09 of 13] oom select should only take rss into account Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 10 of 13] limit reclaim if enough pages have been freed Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 11 of 13] not-wait-memdie Andrea Arcangeli
2008-01-08 7:50 ` [PATCH 12 of 13] gfp-repeat stop with TIF_MEMDIE Andrea Arcangeli
2008-01-08 7:50 ` Andrea Arcangeli [this message]
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