From: Marc MERLIN <marc@merlins.org>
To: linux-btrfs@vger.kernel.org
Subject: 3.14.0-rc3 btrfs scrub is preventing my laptop from going to sleep
Date: Thu, 27 Feb 2014 11:06:56 -0800 [thread overview]
Message-ID: <20140227190656.GA28338@merlins.org> (raw)
This does not happen consistently, but sometimes:
PM: Preparing system for mem sleep
Freezing user space processes ...
(...)
Freezing of tasks failed after 20.002 seconds (1 tasks refusing to freeze, wq_busy=0):
btrfs D ffff88017639c800 0 12239 12224 0x00000084
ffff880165ec1960 0000000000000086 ffff880165ec1fd8 ffff88017639c2d0
00000000000141c0 ffff88017639c2d0 ffff88007b874000 ffff8804062fa480
0000000000000000 ffff880175837ec0 ffff88007b874220 ffff880165ec1970
Call Trace:
[<ffffffff8160b0d9>] schedule+0x73/0x75
[<ffffffff8126e94c>] scrub_pages+0x27e/0x426
[<ffffffff81085062>] ? finish_wait+0x65/0x65
[<ffffffff81271732>] scrub_stripe+0xada/0xc9e
[<ffffffff812719cc>] scrub_chunk.isra.9+0xd6/0x10d
[<ffffffff81271c77>] scrub_enumerate_chunks+0x274/0x418
[<ffffffff81085000>] ? finish_wait+0x3/0x65
[<ffffffff812723bb>] btrfs_scrub_dev+0x254/0x3cb
[<ffffffff8116ddab>] ? __mnt_want_write+0x62/0x78
[<ffffffff81255c68>] btrfs_ioctl+0x1114/0x24b1
[<ffffffff81140698>] ? ____cache_alloc+0x1c/0x29b
[<ffffffff81140a06>] ? kmem_cache_alloc_node+0xef/0x179
[<ffffffff8160d7b3>] ? _raw_spin_unlock+0x17/0x2a
[<ffffffff81163ade>] do_vfs_ioctl+0x3d2/0x41d
[<ffffffff8116bd00>] ? __fget+0x6f/0x79
[<ffffffff81163b80>] SyS_ioctl+0x57/0x82
[<ffffffff8161426d>] system_call_fastpath+0x1a/0x1f
And then I end up with a hot laptop and a mostly dead battery in my backpack.
As far as I know, this was not happening with 3.13, unless I'm doing
something differently without knowing.
My laptop went to sleep just fine while I was typing this Email, so I'm guessing
it's only btrfs scrub that causes the problem with sleep.
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | PGP 1024R/763BE901
next reply other threads:[~2014-02-27 19:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-27 19:06 Marc MERLIN [this message]
2014-02-27 23:30 ` 3.14.0-rc3 btrfs scrub is preventing my laptop from going to sleep Marc MERLIN
2014-02-28 1:18 ` Wang Shilong
[not found] ` <20140301050937.GD18300@merlins.org>
2014-03-01 15:22 ` Marc MERLIN
2014-03-03 3:17 ` Wang Shilong
2014-03-03 5:21 ` Marc MERLIN
2014-03-03 6:50 ` Wang Shilong
2014-03-03 15:10 ` Marc MERLIN
2014-03-03 16:56 ` Josef Bacik
2014-03-03 17:09 ` Josef Bacik
2014-03-03 22:05 ` Marc MERLIN
2014-03-03 22:18 ` Josef Bacik
2014-03-03 23:13 ` Marc MERLIN
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