From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: sergey.senozhatsky@gmail.com
Cc: mhocko@suse.com, linux-mm@kvack.org, pmladek@suse.cz
Subject: Re: [PATCH] mm/page_alloc: Wait for oom_lock before retrying.
Date: Thu, 22 Dec 2016 19:27:17 +0900 [thread overview]
Message-ID: <201612221927.BGE30207.OSFJMFLFOHQtOV@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <20161220153948.GA575@tigerII.localdomain>
Sergey Senozhatsky wrote:
> On (12/19/16 21:27), Sergey Senozhatsky wrote:
> [..]
> >
> > I'll finish re-basing the patch set tomorrow.
> >
>
> pushed
>
> https://gitlab.com/senozhatsky/linux-next-ss/commits/printk-safe-deferred
>
> not tested. will test and send out the patch set tomorrow.
>
> -ss
Thank you. I tried "[PATCHv6 0/7] printk: use printk_safe to handle printk()
recursive calls" at https://lkml.org/lkml/2016/12/21/232 on top of linux.git
as of commit 52bce91165e5f2db "splice: reinstate SIGPIPE/EPIPE handling", but
it turned out that your patch set does not solve this problem.
I was assuming that sending to consoles from printk() is offloaded to a kernel
thread dedicated for that purpose, but your patch set does not do it. As a result,
somebody who called out_of_memory() is still preempted by other threads consuming
CPU time due to cond_resched() from console_unlock() as demonstrated by below patch.
----------------------------------------
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2099,6 +2099,9 @@ static inline int can_use_console(void)
return cpu_online(raw_smp_processor_id()) || have_callable_console();
}
+extern bool oom_lock_resched;
+extern struct mutex oom_lock;
+
/**
* console_unlock - unlock the console system
*
@@ -2211,8 +2214,11 @@ void console_unlock(void)
start_critical_timings();
printk_safe_exit(flags);
- if (do_cond_resched)
+ if (do_cond_resched) {
+ oom_lock_resched = (__mutex_owner(&oom_lock) == current);
cond_resched();
+ oom_lock_resched = false;
+ }
}
console_locked = 0;
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3523,6 +3523,8 @@ bool gfp_pfmemalloc_allowed(gfp_t gfp_mask)
return false;
}
+bool oom_lock_resched;
+
static inline struct page *
__alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
struct alloc_context *ac)
@@ -3694,10 +3696,14 @@ bool gfp_pfmemalloc_allowed(gfp_t gfp_mask)
/* Make sure we know about allocations which stall for too long */
if (time_after(jiffies, alloc_start + stall_timeout)) {
- warn_alloc(gfp_mask,
- "page allocation stalls for %ums, order:%u",
- jiffies_to_msecs(jiffies-alloc_start), order);
- stall_timeout += 10 * HZ;
+ static DEFINE_RATELIMIT_STATE(stall_rs, HZ, 1);
+
+ if (__ratelimit(&stall_rs)) {
+ pr_warn("%s(%u): page allocation stalls for %ums, order:%u mode:%#x(%pGg) cond_resched_with_oom_lock=%u\n",
+ current->comm, current->pid, jiffies_to_msecs(jiffies - alloc_start),
+ order, gfp_mask, &gfp_mask, oom_lock_resched);
+ stall_timeout += 10 * HZ;
+ }
}
if (should_reclaim_retry(gfp_mask, order, ac, alloc_flags,
----------------------------------------
----------------------------------------
[ 103.425129] mysqld invoked oom-killer: gfp_mask=0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD), nodemask=0, order=0, oom_score_adj=0
[ 103.508812] mysqld cpuset=/ mems_allowed=0
[ 103.514111] CPU: 2 PID: 2300 Comm: mysqld Not tainted 4.9.0+ #100
[ 103.517436] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013
[ 103.522379] Call Trace:
[ 103.527731] dump_stack+0x85/0xc9
[ 103.532552] dump_header+0x82/0x275
[ 103.534901] ? trace_hardirqs_on_caller+0xf9/0x1c0
[ 103.537726] ? trace_hardirqs_on+0xd/0x10
[ 103.540217] oom_kill_process+0x219/0x400
[ 103.542729] out_of_memory+0x13e/0x580
[ 103.545162] ? out_of_memory+0x20e/0x580
[ 103.547603] __alloc_pages_slowpath+0x7d4/0x8e6
[ 103.550178] ? get_page_from_freelist+0x15a/0xdc0
[ 103.552808] __alloc_pages_nodemask+0x456/0x4e0
[ 103.555355] alloc_pages_current+0x97/0x1b0
[ 103.557750] ? find_get_entry+0x5/0x300
[ 103.559996] __page_cache_alloc+0x15d/0x1a0
[ 103.564859] ? pagecache_get_page+0x2c/0x2b0
[ 103.567258] filemap_fault+0x48e/0x6d0
[ 103.569444] ? filemap_fault+0x339/0x6d0
[ 103.571698] xfs_filemap_fault+0x71/0x1e0 [xfs]
[ 103.574125] __do_fault+0x21/0xa0
[ 103.576075] ? _raw_spin_unlock+0x27/0x40
[ 103.578273] handle_mm_fault+0xee9/0x1180
[ 103.580437] ? handle_mm_fault+0x5e/0x1180
[ 103.582634] __do_page_fault+0x24a/0x530
[ 103.584710] do_page_fault+0x30/0x80
[ 103.586682] page_fault+0x28/0x30
[ 103.588497] RIP: 0033:0x7f3b9d66d5d0
[ 103.590410] RSP: 002b:00007f3b7ffc9c88 EFLAGS: 00010246
[ 103.592857] RAX: 0000000000000001 RBX: 0000560ff6f1afa0 RCX: 00007f3b9d668a82
[ 103.596038] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000560ff6f162e0
[ 103.599490] RBP: 00007f3b7ffc9d80 R08: 0000560ff6f162e0 R09: 0000000000000001
[ 103.602675] R10: 00007f3b7ffc9ce0 R11: 0000000000000000 R12: 0000000000000003
[ 103.605821] R13: 00007f3b7ffc9ce0 R14: 000000000000006e R15: 0000560ff6f16200
[ 103.609007] Mem-Info:
[ 103.621042] __alloc_pages_slowpath: 39544 callbacks suppressed
[ 103.621046] irqbalance(483): page allocation stalls for 14949ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 104.621663] __alloc_pages_slowpath: 41790 callbacks suppressed
[ 104.621679] systemd(1): page allocation stalls for 15951ms, order:0 mode:0x24280ca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO) cond_resched_with_oom_lock=1
[ 105.622679] __alloc_pages_slowpath: 42194 callbacks suppressed
[ 105.622683] postgres(2210): page allocation stalls for 16864ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 106.623754] __alloc_pages_slowpath: 39712 callbacks suppressed
[ 106.623758] postgres(1190): page allocation stalls for 13337ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 107.624849] __alloc_pages_slowpath: 35250 callbacks suppressed
[ 107.624853] crond(503): page allocation stalls for 18950ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 108.625924] __alloc_pages_slowpath: 29191 callbacks suppressed
[ 108.625928] master(2162): page allocation stalls for 16786ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 109.626959] __alloc_pages_slowpath: 46005 callbacks suppressed
[ 109.626963] postgres(2212): page allocation stalls for 16623ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 110.628011] __alloc_pages_slowpath: 53990 callbacks suppressed
[ 110.628015] ksmtuned(507): page allocation stalls for 21856ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 111.628588] __alloc_pages_slowpath: 49833 callbacks suppressed
[ 111.628592] in:imjournal(885): page allocation stalls for 22956ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 112.629667] __alloc_pages_slowpath: 48069 callbacks suppressed
[ 112.629671] crond(503): page allocation stalls for 23955ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 113.630720] __alloc_pages_slowpath: 50438 callbacks suppressed
[ 113.630724] master(2162): page allocation stalls for 21791ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 114.631785] __alloc_pages_slowpath: 50191 callbacks suppressed
[ 114.631789] systemd(1): page allocation stalls for 25961ms, order:0 mode:0x24280ca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO) cond_resched_with_oom_lock=1
[ 115.632884] __alloc_pages_slowpath: 47058 callbacks suppressed
[ 115.632888] postgres(2211): page allocation stalls for 26874ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 116.633937] __alloc_pages_slowpath: 43322 callbacks suppressed
[ 116.633940] postgres(1190): page allocation stalls for 23347ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 117.634987] __alloc_pages_slowpath: 41755 callbacks suppressed
[ 117.634991] irqbalance(483): page allocation stalls for 28963ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 118.634021] active_anon:313193 inactive_anon:3457 isolated_anon:0
[ 118.634021] active_file:256 inactive_file:337 isolated_file:32
[ 118.634021] unevictable:0 dirty:9 writeback:0 unstable:0
[ 118.634021] slab_reclaimable:8896 slab_unreclaimable:31623
[ 118.634021] mapped:1988 shmem:3527 pagetables:8669 bounce:0
[ 118.634021] free:12797 free_pcp:214 free_cma:0
[ 118.636046] __alloc_pages_slowpath: 40420 callbacks suppressed
[ 118.636050] gmain(615): page allocation stalls for 29979ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=0
[ 119.636632] __alloc_pages_slowpath: 59369 callbacks suppressed
[ 119.636636] in:imjournal(885): page allocation stalls for 30964ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 120.637687] __alloc_pages_slowpath: 55694 callbacks suppressed
[ 120.637690] ksmtuned(507): page allocation stalls for 31866ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 121.638769] __alloc_pages_slowpath: 51519 callbacks suppressed
[ 121.638772] postgres(2212): page allocation stalls for 28635ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 122.639817] __alloc_pages_slowpath: 50601 callbacks suppressed
[ 122.639820] crond(503): page allocation stalls for 33965ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 123.640913] __alloc_pages_slowpath: 51169 callbacks suppressed
[ 123.640916] lpqd(2332): page allocation stalls for 28749ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 124.641949] __alloc_pages_slowpath: 54501 callbacks suppressed
[ 124.641953] gmain(615): page allocation stalls for 35985ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 125.643026] __alloc_pages_slowpath: 54196 callbacks suppressed
[ 125.643030] auditd(435): page allocation stalls for 26271ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 126.643593] __alloc_pages_slowpath: 54450 callbacks suppressed
[ 126.643597] systemd-hostnam(571): page allocation stalls for 19483ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 127.644663] __alloc_pages_slowpath: 53238 callbacks suppressed
[ 127.644666] tuned(2193): page allocation stalls for 39011ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 128.645733] __alloc_pages_slowpath: 53215 callbacks suppressed
[ 128.645737] systemd-hostnam(571): page allocation stalls for 21485ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 129.646815] __alloc_pages_slowpath: 60025 callbacks suppressed
[ 129.646818] in:imjournal(885): page allocation stalls for 40974ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 130.647865] __alloc_pages_slowpath: 58585 callbacks suppressed
[ 130.647869] postgres(2212): page allocation stalls for 37644ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 131.648927] __alloc_pages_slowpath: 56303 callbacks suppressed
[ 131.648930] systemd-logind(501): page allocation stalls for 11659ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 132.649994] __alloc_pages_slowpath: 52335 callbacks suppressed
[ 132.649998] ksmtuned(507): page allocation stalls for 43878ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 133.651052] __alloc_pages_slowpath: 51745 callbacks suppressed
[ 133.651056] lpqd(2332): page allocation stalls for 38759ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 134.651623] __alloc_pages_slowpath: 52909 callbacks suppressed
[ 134.651626] tuned(2193): page allocation stalls for 46018ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 135.652717] __alloc_pages_slowpath: 52653 callbacks suppressed
[ 135.652721] systemd-journal(383): page allocation stalls for 47032ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 136.653780] __alloc_pages_slowpath: 52888 callbacks suppressed
[ 136.653784] systemd-journal(383): page allocation stalls for 48033ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 137.654858] __alloc_pages_slowpath: 54692 callbacks suppressed
[ 137.654862] lpqd(2332): page allocation stalls for 42763ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 138.655883] __alloc_pages_slowpath: 55939 callbacks suppressed
[ 138.655886] postgres(1190): page allocation stalls for 45369ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 139.656972] __alloc_pages_slowpath: 62010 callbacks suppressed
[ 139.656975] auditd(435): page allocation stalls for 40285ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 140.658038] __alloc_pages_slowpath: 64428 callbacks suppressed
[ 140.658042] tuned(2193): page allocation stalls for 52024ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 141.658599] __alloc_pages_slowpath: 65734 callbacks suppressed
[ 141.658603] NetworkManager(537): page allocation stalls for 52973ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 142.659654] __alloc_pages_slowpath: 67122 callbacks suppressed
[ 142.659657] systemd-hostnam(571): page allocation stalls for 35499ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 143.660751] __alloc_pages_slowpath: 64515 callbacks suppressed
[ 143.660755] pickup(2169): page allocation stalls for 11784ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 144.661796] __alloc_pages_slowpath: 62998 callbacks suppressed
[ 144.661799] in:imjournal(885): page allocation stalls for 55989ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 145.662860] __alloc_pages_slowpath: 58703 callbacks suppressed
[ 145.662863] NetworkManager(537): page allocation stalls for 56977ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 146.663959] __alloc_pages_slowpath: 60013 callbacks suppressed
[ 146.663962] systemd-logind(501): page allocation stalls for 26674ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 147.664996] __alloc_pages_slowpath: 57511 callbacks suppressed
[ 147.664999] ksmtuned(507): page allocation stalls for 58893ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 148.666057] __alloc_pages_slowpath: 55971 callbacks suppressed
[ 148.666061] master(2162): page allocation stalls for 56826ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 149.666631] __alloc_pages_slowpath: 62040 callbacks suppressed
[ 149.666634] postgres(1190): page allocation stalls for 56380ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 150.667694] __alloc_pages_slowpath: 64495 callbacks suppressed
[ 150.667698] systemd-journal(383): page allocation stalls for 62047ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 151.668761] __alloc_pages_slowpath: 65855 callbacks suppressed
[ 151.668765] tuned(2193): page allocation stalls for 63035ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 152.669854] __alloc_pages_slowpath: 67093 callbacks suppressed
[ 152.669857] dbus-daemon(492): page allocation stalls for 63895ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 153.670902] __alloc_pages_slowpath: 66886 callbacks suppressed
[ 153.670906] mysqld(2238): page allocation stalls for 64927ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 154.671963] __alloc_pages_slowpath: 67141 callbacks suppressed
[ 154.671966] gmain(615): page allocation stalls for 66015ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 155.673055] __alloc_pages_slowpath: 67300 callbacks suppressed
[ 155.673058] NetworkManager(537): page allocation stalls for 66987ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 156.673615] __alloc_pages_slowpath: 67163 callbacks suppressed
[ 156.673619] postgres(1190): page allocation stalls for 63387ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 157.674661] __alloc_pages_slowpath: 67216 callbacks suppressed
[ 157.674665] postgres(1190): page allocation stalls for 64388ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 158.675760] __alloc_pages_slowpath: 64137 callbacks suppressed
[ 158.675763] auditd(435): page allocation stalls for 59304ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 159.676802] __alloc_pages_slowpath: 63812 callbacks suppressed
[ 159.676805] mysqld(2240): page allocation stalls for 70645ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 160.678024] __alloc_pages_slowpath: 63074 callbacks suppressed
[ 160.678028] systemd-logind(501): page allocation stalls for 40688ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 161.678962] __alloc_pages_slowpath: 64160 callbacks suppressed
[ 161.678966] mysqld(2238): page allocation stalls for 72935ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 162.680008] __alloc_pages_slowpath: 63952 callbacks suppressed
[ 162.680012] gmain(615): page allocation stalls for 74023ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 163.680565] __alloc_pages_slowpath: 65331 callbacks suppressed
[ 163.680568] systemd-hostnam(571): page allocation stalls for 56520ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 164.681997] __alloc_pages_slowpath: 67274 callbacks suppressed
[ 164.682005] dbus-daemon(492): page allocation stalls for 75907ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 165.682703] __alloc_pages_slowpath: 67081 callbacks suppressed
[ 165.682707] irqbalance(483): page allocation stalls for 77011ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 166.683767] __alloc_pages_slowpath: 67006 callbacks suppressed
[ 166.683770] postgres(1190): page allocation stalls for 73397ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 167.684838] __alloc_pages_slowpath: 63439 callbacks suppressed
[ 167.684842] postgres(2210): page allocation stalls for 78926ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 168.685904] __alloc_pages_slowpath: 63998 callbacks suppressed
[ 168.685907] lpqd(2332): page allocation stalls for 73794ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 169.686974] __alloc_pages_slowpath: 64142 callbacks suppressed
[ 169.686978] ksmtuned(507): page allocation stalls for 80915ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 170.687783] __alloc_pages_slowpath: 63814 callbacks suppressed
[ 170.687787] irqbalance(483): page allocation stalls for 82016ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 171.688605] __alloc_pages_slowpath: 64212 callbacks suppressed
[ 171.688608] postgres(2210): page allocation stalls for 82930ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 172.689672] __alloc_pages_slowpath: 61346 callbacks suppressed
[ 172.689676] systemd(1): page allocation stalls for 84019ms, order:0 mode:0x24280ca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO) cond_resched_with_oom_lock=1
[ 173.690749] __alloc_pages_slowpath: 65162 callbacks suppressed
[ 173.690753] NetworkManager(537): page allocation stalls for 85005ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 174.691815] __alloc_pages_slowpath: 67004 callbacks suppressed
[ 174.691818] irqbalance(483): page allocation stalls for 86020ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 175.692873] __alloc_pages_slowpath: 67376 callbacks suppressed
[ 175.692877] gmain(615): page allocation stalls for 87036ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 176.693970] __alloc_pages_slowpath: 67345 callbacks suppressed
[ 176.693973] mysqld(2238): page allocation stalls for 87950ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 177.695007] __alloc_pages_slowpath: 67219 callbacks suppressed
[ 177.695010] systemd-logind(501): page allocation stalls for 57705ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 178.635236] Node 0 active_anon:1252772kB inactive_anon:13828kB active_file:1024kB inactive_file:1348kB unevictable:0kB isolated(anon):0kB isolated(file):128kB mapped:7952kB dirty:36kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 892928kB anon_thp: 14108kB writeback_tmp:0kB unstable:0kB pages_scanned:3921 all_unreclaimable? yes
[ 178.695575] __alloc_pages_slowpath: 66566 callbacks suppressed
[ 178.695579] ksmtuned(507): page allocation stalls for 89924ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 179.283906] Node 0 DMA free:6700kB min:440kB low:548kB high:656kB active_anon:9144kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:32kB kernel_stack:0kB pagetables:28kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 179.299970] lowmem_reserve[]: 0 1565 1565 1565
[ 179.482583] Node 0 DMA32 free:44488kB min:44612kB low:55764kB high:66916kB active_anon:1243628kB inactive_anon:13828kB active_file:1024kB inactive_file:1348kB unevictable:0kB writepending:36kB present:2080640kB managed:1603468kB mlocked:0kB slab_reclaimable:35584kB slab_unreclaimable:126460kB kernel_stack:17936kB pagetables:34648kB bounce:0kB free_pcp:856kB local_pcp:116kB free_cma:0kB
[ 179.696680] __alloc_pages_slowpath: 58011 callbacks suppressed
[ 179.696688] a.out(2743): page allocation stalls for 91086ms, order:0 mode:0x342004a(GFP_NOFS|__GFP_HIGHMEM|__GFP_HARDWALL|__GFP_MOVABLE|__GFP_WRITE) cond_resched_with_oom_lock=1
[ 180.548518] lowmem_reserve[]: 0 0 0 0
[ 180.697713] __alloc_pages_slowpath: 64542 callbacks suppressed
[ 180.697717] gmain(615): page allocation stalls for 92041ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 181.698801] __alloc_pages_slowpath: 66996 callbacks suppressed
[ 181.698805] lpqd(2332): page allocation stalls for 86807ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 182.699853] __alloc_pages_slowpath: 67094 callbacks suppressed
[ 182.699857] in:imjournal(885): page allocation stalls for 94027ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 183.700923] __alloc_pages_slowpath: 67039 callbacks suppressed
[ 183.700926] systemd(1): page allocation stalls for 95030ms, order:0 mode:0x24280ca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO) cond_resched_with_oom_lock=1
[ 184.702000] __alloc_pages_slowpath: 67067 callbacks suppressed
[ 184.702004] NetworkManager(537): page allocation stalls for 96016ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 185.703062] __alloc_pages_slowpath: 66792 callbacks suppressed
[ 185.703066] systemd-hostnam(571): page allocation stalls for 78542ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 186.689089] Node 0 DMA: 1*4kB (U) 1*8kB (M) 0*16kB 1*32kB (U) 2*64kB (UM) 1*128kB (U) 1*256kB (U) 0*512kB 2*1024kB (UM) 0*2048kB 1*4096kB (M) = 6700kB
[ 186.703605] __alloc_pages_slowpath: 67093 callbacks suppressed
[ 186.703608] systemd(1): page allocation stalls for 98033ms, order:0 mode:0x24280ca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO) cond_resched_with_oom_lock=1
[ 187.704669] __alloc_pages_slowpath: 66243 callbacks suppressed
[ 187.704672] crond(503): page allocation stalls for 99030ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 188.705740] __alloc_pages_slowpath: 67397 callbacks suppressed
[ 188.705744] postgres(2211): page allocation stalls for 99947ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 189.706854] __alloc_pages_slowpath: 66839 callbacks suppressed
[ 189.706874] a.out(2653): page allocation stalls for 100985ms, order:0 mode:0x2604240(GFP_NOFS|__GFP_NOWARN|__GFP_COMP|__GFP_NOTRACK) cond_resched_with_oom_lock=1
[ 190.707883] __alloc_pages_slowpath: 66947 callbacks suppressed
[ 190.707886] pickup(2169): page allocation stalls for 58831ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 191.662483] Node 0 DMA32: 420*4kB (U) 315*8kB (UM) 172*16kB (UE) 335*32kB (UE) 99*64kB (UE) 26*128kB (UME) 9*256kB (UME) 11*512kB (UME) 9*1024kB (ME) 0*2048kB 0*4096kB = 44488kB
[ 191.708840] __alloc_pages_slowpath: 66618 callbacks suppressed
[ 191.708848] crond(503): page allocation stalls for 103034ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 192.710030] __alloc_pages_slowpath: 66453 callbacks suppressed
[ 192.710034] NetworkManager(537): page allocation stalls for 104024ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 193.710566] __alloc_pages_slowpath: 66903 callbacks suppressed
[ 193.710570] NetworkManager(537): page allocation stalls for 105025ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 194.712985] __alloc_pages_slowpath: 66683 callbacks suppressed
[ 194.712988] tuned(2193): page allocation stalls for 106079ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 195.713716] __alloc_pages_slowpath: 67736 callbacks suppressed
[ 195.713719] postgres(2210): page allocation stalls for 106955ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 196.714811] __alloc_pages_slowpath: 67054 callbacks suppressed
[ 196.714816] systemd-logind(501): page allocation stalls for 76725ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 197.715840] __alloc_pages_slowpath: 67059 callbacks suppressed
[ 197.715843] tuned(2193): page allocation stalls for 109082ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 198.716913] __alloc_pages_slowpath: 66687 callbacks suppressed
[ 198.716917] auditd(435): page allocation stalls for 99345ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 199.718012] __alloc_pages_slowpath: 67443 callbacks suppressed
[ 199.718016] postgres(2211): page allocation stalls for 110959ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 200.719049] __alloc_pages_slowpath: 67103 callbacks suppressed
[ 200.719053] postgres(2210): page allocation stalls for 111960ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 201.719617] __alloc_pages_slowpath: 65347 callbacks suppressed
[ 201.719620] crond(503): page allocation stalls for 113045ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 202.720681] __alloc_pages_slowpath: 67782 callbacks suppressed
[ 202.720685] systemd-logind(501): page allocation stalls for 82731ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 203.721761] __alloc_pages_slowpath: 67320 callbacks suppressed
[ 203.721765] crond(503): page allocation stalls for 115047ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 204.722809] __alloc_pages_slowpath: 67440 callbacks suppressed
[ 204.722812] lpqd(2332): page allocation stalls for 109831ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 205.723878] __alloc_pages_slowpath: 67259 callbacks suppressed
[ 205.723882] dbus-daemon(492): page allocation stalls for 116949ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 206.724974] __alloc_pages_slowpath: 66817 callbacks suppressed
[ 206.724978] postgres(2210): page allocation stalls for 117966ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 207.726015] __alloc_pages_slowpath: 66699 callbacks suppressed
[ 207.726019] auditd(435): page allocation stalls for 108354ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 208.726611] __alloc_pages_slowpath: 67461 callbacks suppressed
[ 208.726614] systemd-logind(501): page allocation stalls for 88737ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 209.727663] __alloc_pages_slowpath: 67552 callbacks suppressed
[ 209.727667] NetworkManager(537): page allocation stalls for 121042ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 210.728724] __alloc_pages_slowpath: 67554 callbacks suppressed
[ 210.728727] master(2162): page allocation stalls for 118889ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 211.729782] __alloc_pages_slowpath: 66883 callbacks suppressed
[ 211.729786] systemd-hostnam(571): page allocation stalls for 104569ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 212.730856] __alloc_pages_slowpath: 67060 callbacks suppressed
[ 212.730859] tuned(2193): page allocation stalls for 124097ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 213.731957] __alloc_pages_slowpath: 67212 callbacks suppressed
[ 213.731960] postgres(2211): page allocation stalls for 124973ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 214.732979] __alloc_pages_slowpath: 66906 callbacks suppressed
[ 214.732983] NetworkManager(537): page allocation stalls for 126047ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 215.733541] __alloc_pages_slowpath: 67186 callbacks suppressed
[ 215.733544] postgres(2210): page allocation stalls for 126975ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 216.734628] __alloc_pages_slowpath: 67116 callbacks suppressed
[ 216.734631] systemd-logind(501): page allocation stalls for 96745ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 217.735688] __alloc_pages_slowpath: 67045 callbacks suppressed
[ 217.735692] systemd-logind(501): page allocation stalls for 97746ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 218.736777] __alloc_pages_slowpath: 64296 callbacks suppressed
[ 218.736781] NetworkManager(537): page allocation stalls for 130051ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=1
[ 219.704510] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 219.711197] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 219.716162] 4152 total pagecache pages
[ 219.724755] 0 pages in swap cache
[ 219.727428] Swap cache stats: add 0, delete 0, find 0/0
[ 219.730665] Free swap = 0kB
[ 219.733323] Total swap = 0kB
[ 219.739283] 524157 pages RAM
[ 219.741645] 0 pages HighMem/MovableOnly
[ 219.744292] 119314 pages reserved
[ 219.745254] __alloc_pages_slowpath: 64179 callbacks suppressed
[ 219.745257] mysqld(2234): page allocation stalls for 130829ms, order:0 mode:0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD) cond_resched_with_oom_lock=0
[ 219.759890] 0 pages cma reserved
[ 219.762306] 0 pages hwpoisoned
[ 219.773275] Out of memory: Kill process 2706 (a.out) score 997 or sacrifice child
[ 219.777233] Killed process 2706 (a.out) total-vm:4168kB, anon-rss:84kB, file-rss:0kB, shmem-rss:0kB
[ 219.827687] oom_reaper: reaped process 2706 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
----------------------------------------
Pretending out_of_memory() as if under NMI context is ridicurous.
Running out_of_memory() with preemption disabled
( http://lkml.kernel.org/r/201509191605.CAF13520.QVSFHLtFJOMOOF@I-love.SAKURA.ne.jp )
was not accepted.
Adding exceptions like
- do_cond_resched = console_may_schedule;
+ do_cond_resched = console_may_schedule && __mutex_owner(&oom_lock) != current;
will not be smart.
Now, what options are left other than replacing !mutex_trylock(&oom_lock)
with mutex_lock_killable(&oom_lock) which also stops wasting CPU time?
Are we waiting for offloading sending to consoles?
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next prev parent reply other threads:[~2016-12-22 10:27 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-06 10:33 Tetsuo Handa
2016-12-07 8:15 ` Michal Hocko
2016-12-07 15:29 ` Tetsuo Handa
2016-12-08 8:20 ` Vlastimil Babka
2016-12-08 11:00 ` Tetsuo Handa
2016-12-08 13:32 ` Michal Hocko
2016-12-08 16:18 ` Sergey Senozhatsky
2016-12-08 13:27 ` Michal Hocko
2016-12-09 14:23 ` Tetsuo Handa
2016-12-09 14:46 ` Michal Hocko
2016-12-10 11:24 ` Tetsuo Handa
2016-12-12 9:07 ` Michal Hocko
2016-12-12 11:49 ` Petr Mladek
2016-12-12 13:00 ` Michal Hocko
2016-12-12 14:05 ` Tetsuo Handa
2016-12-13 1:06 ` Sergey Senozhatsky
2016-12-12 12:12 ` Tetsuo Handa
2016-12-12 12:55 ` Michal Hocko
2016-12-12 13:19 ` Michal Hocko
2016-12-13 12:06 ` Tetsuo Handa
2016-12-13 17:06 ` Michal Hocko
2016-12-14 11:37 ` Tetsuo Handa
2016-12-14 12:42 ` Michal Hocko
2016-12-14 16:36 ` Tetsuo Handa
2016-12-14 18:18 ` Michal Hocko
2016-12-15 10:21 ` Tetsuo Handa
2016-12-19 11:25 ` Tetsuo Handa
2016-12-19 12:27 ` Sergey Senozhatsky
2016-12-20 15:39 ` Sergey Senozhatsky
2016-12-22 10:27 ` Tetsuo Handa [this message]
2016-12-22 10:53 ` Petr Mladek
2016-12-22 13:40 ` Sergey Senozhatsky
2016-12-22 13:33 ` Tetsuo Handa
2016-12-22 19:24 ` Michal Hocko
2016-12-24 6:25 ` Tetsuo Handa
2016-12-26 11:49 ` Michal Hocko
2016-12-27 10:39 ` Tetsuo Handa
2016-12-27 10:57 ` Michal Hocko
2016-12-22 13:42 ` Sergey Senozhatsky
2016-12-22 14:01 ` Tetsuo Handa
2016-12-22 14:09 ` Sergey Senozhatsky
2016-12-22 14:30 ` Sergey Senozhatsky
2016-12-26 10:54 ` Tetsuo Handa
2016-12-26 11:34 ` Sergey Senozhatsky
2017-01-12 13:10 ` Petr Mladek
2017-01-13 2:52 ` Sergey Senozhatsky
2017-01-13 3:53 ` Sergey Senozhatsky
2017-01-13 11:15 ` Petr Mladek
2017-01-13 11:14 ` Petr Mladek
2017-01-12 14:18 ` Petr Mladek
2017-01-13 2:28 ` Sergey Senozhatsky
2017-01-13 11:03 ` Petr Mladek
2017-01-13 11:50 ` Sergey Senozhatsky
2017-01-13 12:15 ` Petr Mladek
2016-12-26 11:41 ` Sergey Senozhatsky
2017-01-13 14:03 ` Petr Mladek
2016-12-15 1:11 ` Sergey Senozhatsky
2016-12-15 6:35 ` Michal Hocko
2016-12-15 10:16 ` Petr Mladek
2016-12-14 9:37 ` Petr Mladek
2016-12-14 10:20 ` Sergey Senozhatsky
2016-12-14 11:01 ` Petr Mladek
2016-12-14 12:23 ` Sergey Senozhatsky
2016-12-14 12:47 ` Petr Mladek
2016-12-14 10:26 ` Michal Hocko
2016-12-15 7:34 ` Sergey Senozhatsky
2016-12-14 11:37 ` Tetsuo Handa
2016-12-14 12:36 ` Petr Mladek
2016-12-14 12:44 ` Michal Hocko
2016-12-14 13:36 ` Tetsuo Handa
2016-12-14 13:52 ` Michal Hocko
2016-12-14 12:50 ` Sergey Senozhatsky
2016-12-12 14:59 ` Tetsuo Handa
2016-12-12 15:55 ` Michal Hocko
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