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Date: Mon, 18 Jan 2010 00:00:23 +0100 From: "Rafael J. Wysocki" <rjw@...k.pl> To: Benjamin Herrenschmidt <benh@...nel.crashing.org> Cc: Oliver Neukum <oliver@...kum.org>, Maxim Levitsky <maximlevitsky@...il.com>, linux-pm@...ts.linux-foundation.org, LKML <linux-kernel@...r.kernel.org>, "linux-mm" <linux-mm@...ck.org>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] Memory allocations in .suspend became very unreliable) On Sunday 17 January 2010, Benjamin Herrenschmidt wrote: > On Sun, 2010-01-17 at 14:27 +0100, Rafael J. Wysocki wrote: ... > However, it's hard to deal with the case of allocations that have > already started waiting for IOs. It might be possible to have some VM > hook to make them wakeup, re-evaluate the situation and get out of that > code path but in any case it would be tricky. In the second version of the patch I used an rwsem that made us wait for these allocations to complete before we changed gfp_allowed_mask. [This is kinda buggy in the version I sent, but I'm going to send an update in a minute.] Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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