From: Ming Lei <ming.lei@canonical.com>
To: linux-kernel@vger.kernel.org
Cc: Alan Stern <stern@rowland.harvard.edu>,
Oliver Neukum <oneukum@suse.de>, Minchan Kim <minchan@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [RFC PATCH v1 0/3] mm/PM/USB: memory allocation with no io in need
Date: Tue, 16 Oct 2012 23:59:40 +0800 [thread overview]
Message-ID: <1350403183-12650-1-git-send-email-ming.lei@canonical.com> (raw)
Hi,
This patch set introduces one process flag and trys to fix one deadlock
problem on block device during runtime resume or usb bus reset.
The 1st one is the change on include/sched.h and mm.
The other 2 patches are applied again PM and USB subsystem to demo
how to use the introduced mechanism to fix the deadlock problem.
V1:
- take Minchan's change to avoid the check in alloc_page hot path
- change the helpers' style into save/restore as suggested by Alan
- memory allocation with no io in usb bus reset path for all devices
as suggested by Greg and Oliver
drivers/base/power/runtime.c | 14 ++++++++++++++
drivers/usb/core/hub.c | 11 +++++++++++
include/linux/sched.h | 11 +++++++++++
mm/page_alloc.c | 10 +++++++++-
mm/vmscan.c | 13 +++++++++++++
5 files changed, 58 insertions(+), 1 deletion(-)
Thanks,
--
Ming Lei
next reply other threads:[~2012-10-16 15:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-16 15:59 Ming Lei [this message]
2012-10-16 15:59 ` [RFC PATCH v1 1/3] mm: teach mm by current context info to not do I/O during memory allocation Ming Lei
2012-10-16 20:19 ` Andrew Morton
2012-10-17 1:54 ` Ming Lei
2012-10-17 23:54 ` Andrew Morton
2012-10-19 3:52 ` Ming Lei
2012-10-17 3:40 ` Ming Lei
2012-10-17 5:14 ` Kamezawa Hiroyuki
2012-10-17 10:56 ` Ming Lei
2012-10-16 15:59 ` [RFC PATCH v1 2/3] PM / Runtime: force memory allocation with no I/O during runtime_resume callbcack Ming Lei
2012-10-17 5:43 ` Rafael J. Wysocki
2012-10-17 11:07 ` Ming Lei
2012-10-18 23:16 ` Rafael J. Wysocki
2012-10-19 1:41 ` Ming Lei
2012-10-16 15:59 ` [RFC PATCH v1 3/3] USB: forbid memory allocation with I/O during bus reset Ming Lei
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