linux-kernel - [PATCH 0/2] Improve documentation of FADV

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Date:	Wed,  3 Dec 2014 00:42:45 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Michael Kerrisk <mtk.manpages@...il.com>
Cc:	Linux-MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	Mel Gorman <mgorman@...e.de>
Subject: [PATCH 0/2] Improve documentation of FADV_DONTNEED behaviour

Partial page discard requests are ignored and the documentation on why this
is correct behaviour sucks. A readahead patch looked like a "regression" to
a random IO storage benchmark because posix_fadvise() was used incorrectly
to force IO requests to go to disk. In reality, the benchmark sucked but
it was non-obvious why. Patch 1 updates the kernel comment in case someone
"fixes" either readahead or fadvise for inappropriate reasons. Patch 2
updates the relevant man page on the rough off chance that application
developers do not read kernel source comments.

-- 
2.1.2

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