From: Andrew Morton <akpm@linux-foundation.org>
To: Ming Lei <ming.lei@canonical.com>
Cc: linux-kernel@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>,
Oliver Neukum <oneukum@suse.de>, Minchan Kim <minchan@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>, Jens Axboe <axboe@kernel.dk>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org,
linux-pm@vger.kernel.org,
linux-mm@kvack.org"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [PATCH v4 0/6] solve deadlock caused by memory allocation with I/O
Date: Tue, 6 Nov 2012 15:23:03 -0800 [thread overview]
Message-ID: <20121106152303.b1e135ee.akpm@linux-foundation.org> (raw)
In-Reply-To: <1351931714-11689-1-git-send-email-ming.lei@canonical.com>
On Sat, 3 Nov 2012 16:35:08 +0800
Ming Lei <ming.lei@canonical.com> wrote:
> This patchset try to solve one deadlock problem which might be caused
> by memory allocation with block I/O during runtime PM and block device
> error handling path. Traditionly, the problem is addressed by passing
> GFP_NOIO statically to mm, but that is not a effective solution, see
> detailed description in patch 1's commit log.
It generally looks OK to me. I have a few comments and I expect to grab
v5.
Rafael, your thoughts?
--
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WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Ming Lei <ming.lei@canonical.com>
Cc: linux-kernel@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>,
Oliver Neukum <oneukum@suse.de>, Minchan Kim <minchan@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>, Jens Axboe <axboe@kernel.dk>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org,
linux-pm@vger.kernel.org, linux-mm@kvack.org,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [PATCH v4 0/6] solve deadlock caused by memory allocation with I/O
Date: Tue, 6 Nov 2012 15:23:03 -0800 [thread overview]
Message-ID: <20121106152303.b1e135ee.akpm@linux-foundation.org> (raw)
In-Reply-To: <1351931714-11689-1-git-send-email-ming.lei@canonical.com>
On Sat, 3 Nov 2012 16:35:08 +0800
Ming Lei <ming.lei@canonical.com> wrote:
> This patchset try to solve one deadlock problem which might be caused
> by memory allocation with block I/O during runtime PM and block device
> error handling path. Traditionly, the problem is addressed by passing
> GFP_NOIO statically to mm, but that is not a effective solution, see
> detailed description in patch 1's commit log.
It generally looks OK to me. I have a few comments and I expect to grab
v5.
Rafael, your thoughts?
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Ming Lei <ming.lei@canonical.com>
Cc: linux-kernel@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>,
Oliver Neukum <oneukum@suse.de>, Minchan Kim <minchan@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>, Jens Axboe <axboe@kernel.dk>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org,
linux-pm@vger.kernel.org, linux-mm@kvack.org,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [PATCH v4 0/6] solve deadlock caused by memory allocation with I/O
Date: Tue, 6 Nov 2012 15:23:03 -0800 [thread overview]
Message-ID: <20121106152303.b1e135ee.akpm@linux-foundation.org> (raw)
In-Reply-To: <1351931714-11689-1-git-send-email-ming.lei@canonical.com>
On Sat, 3 Nov 2012 16:35:08 +0800
Ming Lei <ming.lei@canonical.com> wrote:
> This patchset try to solve one deadlock problem which might be caused
> by memory allocation with block I/O during runtime PM and block device
> error handling path. Traditionly, the problem is addressed by passing
> GFP_NOIO statically to mm, but that is not a effective solution, see
> detailed description in patch 1's commit log.
It generally looks OK to me. I have a few comments and I expect to grab
v5.
Rafael, your thoughts?
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2012-11-06 23:23 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-03 8:35 [PATCH v4 0/6] solve deadlock caused by memory allocation with I/O Ming Lei
2012-11-03 8:35 ` Ming Lei
2012-11-03 8:35 ` [PATCH v4 1/6] mm: teach mm by current context info to not do I/O during memory allocation Ming Lei
2012-11-03 8:35 ` Ming Lei
2012-11-06 23:23 ` Andrew Morton
2012-11-06 23:23 ` Andrew Morton
2012-11-07 3:11 ` Ming Lei
2012-11-07 3:11 ` Ming Lei
2012-11-07 3:48 ` Andrew Morton
2012-11-07 3:48 ` Andrew Morton
2012-11-07 4:35 ` Ming Lei
2012-11-07 4:35 ` Ming Lei
2012-11-03 8:35 ` [PATCH v4 2/6] PM / Runtime: introduce pm_runtime_set_memalloc_noio() Ming Lei
2012-11-03 8:35 ` Ming Lei
[not found] ` <1351931714-11689-3-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2012-11-06 23:24 ` Andrew Morton
2012-11-06 23:24 ` Andrew Morton
2012-11-06 23:24 ` Andrew Morton
2012-11-07 3:32 ` Ming Lei
2012-11-07 3:32 ` Ming Lei
2012-11-03 8:35 ` [PATCH v4 3/6] block/genhd.c: apply pm_runtime_set_memalloc_noio on block devices Ming Lei
2012-11-03 8:35 ` Ming Lei
2012-11-06 23:24 ` Andrew Morton
2012-11-06 23:24 ` Andrew Morton
2012-11-03 8:35 ` [PATCH v4 4/6] net/core: apply pm_runtime_set_memalloc_noio on network devices Ming Lei
2012-11-03 8:35 ` Ming Lei
2012-11-03 8:35 ` [PATCH v4 5/6] PM / Runtime: force memory allocation with no I/O during Runtime PM callbcack Ming Lei
2012-11-03 8:35 ` Ming Lei
2012-11-03 8:35 ` [PATCH v4 6/6] USB: forbid memory allocation with I/O during bus reset Ming Lei
2012-11-03 8:35 ` Ming Lei
2012-11-06 23:23 ` Andrew Morton [this message]
2012-11-06 23:23 ` [PATCH v4 0/6] solve deadlock caused by memory allocation with I/O Andrew Morton
2012-11-06 23:23 ` Andrew Morton
2012-11-07 3:37 ` Ming Lei
2012-11-07 3:37 ` Ming Lei
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