Re: [Bisected Regression in 2.6.35] A full tmpfs filesystem causeshibernation to hang

[KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>]

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> > === 8< ===
> > PM: Marking nosave pages: ...0009f000 - ...000100000
> > PM: basic memory bitmaps created
> > PM: Syncing filesystems ... done
> > Freezing user space processes ... (elapsed 0.01 seconds) done.
> > Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
> > PM: Preallocating image memory...
> > shrink_all_memory start
> > PM: shrink memory: pass=1, req:310171 reclaimed:15492 free:360936
> > PM: shrink memory: pass=2, req:294679 reclaimed:28864 free:373981
> > PM: shrink memory: pass=3, req:265815 reclaimed:60311 free:405374
> > PM: shrink memory: pass=4, req:205504 reclaimed:97870 free:443024
> > PM: shrink memory: pass=5, req:107634 reclaimed:146948 free:492141
> > shrink_all_memory: req:107634 reclaimed:146948 free:492141
> > PM: preallocate_image_highmem 556658 278329
> > PM: preallocate_image_memory 103139 103139
> > PM: preallocate_highmem_fraction 183908 556658 760831 -> 183908
> > === >8 ===
> > 
> > According to your patch, the next output should have been
> > "preallocate_image_memory ...", but it never gets printed, so the
> > hang point should be that function.
> 
> Great!
> I've attached more verbose debug message patch and trial bug fixing patch.
> Could you please to try this?

Oops, please apply attached patch instead 0002-add-gfp_noretry.patch.

Thanks.

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From 88349215862785c4477abcb9c07555cfb7454697 Mon Sep 17 00:00:00 2001
From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Date: Mon, 15 Feb 2044 01:17:09 +0900
Subject: [PATCH] do_try_to_free_pages() oom_killer_disabled

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
---
 mm/vmscan.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index be133ac..69810ae 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -40,6 +40,7 @@
 #include <linux/memcontrol.h>
 #include <linux/delayacct.h>
 #include <linux/sysctl.h>
+#include <linux/oom.h>
 
 #include <asm/tlbflush.h>
 #include <asm/div64.h>
@@ -1931,7 +1932,7 @@ out:
 		return sc->nr_reclaimed;
 
 	/* top priority shrink_zones still had more to do? don't OOM, then */
-	if (scanning_global_lru(sc) && !all_unreclaimable)
+	if (scanning_global_lru(sc) && !all_unreclaimable && !oom_killer_disabled)
 		return 1;
 
 	return 0;
-- 
1.6.5.2