linux-kernel - [PATCH 0/6] make request

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Message-ID: <20120214164646.GA21154@redhat.com>
Date:	Tue, 14 Feb 2012 17:46:46 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	apw@...onical.com, arjan@...ux.intel.com, fhrbata@...hat.com,
	john.johansen@...onical.com, penguin-kernel@...ove.SAKURA.ne.jp,
	rientjes@...gle.com, rusty@...tcorp.com.au, tj@...nel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/6] make request_module() killable

As Tetsuo pointed out, request_module() is very much unfriendly wrt OOM.
It needs "a lot" of time/memory to finish while the caller is blocked in
TASK_UNINTERRUPTIBLE.

Changes:

	- improve the comments a bit

	- reorder the changes so that 3/6 which changes kABI can be
	  skipped, to simplify the backporting

	- tried to test, seems to work

This series is orthogonal to kmod-avoid-deadlock-by-recursive-kmod-call.patch
(which I still think should be replaced, I'll try to return to this later).

3/6 depends on usermodehelper-use-umh_wait_proc-consistently.patch


Many thanks to Tetsuo for the discussion.

Oleg.

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