linux-kernel - Re: [PATCH] mm: fix incorrect behavior when process virtual address space limit is exceeded

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Message-ID: <20151118143217.GA15346@rei>
Date:	Wed, 18 Nov 2015 15:32:17 +0100
From:	Cyril Hrubis <chrubis@...e.cz>
To:	Michal Hocko <mhocko@...nel.org>
Cc:	Piotr Kwapulinski <kwapulinski.piotr@...il.com>,
	akpm@...ux-foundation.org, cmetcalf@...hip.com, mszeredi@...e.cz,
	viro@...iv.linux.org.uk, dave@...olabs.net,
	kirill.shutemov@...ux.intel.com, n-horiguchi@...jp.nec.com,
	aarcange@...hat.com, iamjoonsoo.kim@....com, jack@...e.cz,
	xiexiuqi@...wei.com, vbabka@...e.cz, Vineet.Gupta1@...opsys.com,
	oleg@...hat.com, riel@...hat.com, gang.chen.5i5j@...il.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] mm: fix incorrect behavior when process virtual address
 space limit is exceeded

Hi!
> [CCing Cyril]

Ah I've confused the vm_flags and flags variables and nobody caught that
during the review. But still sorry that I've messed up.

Looking at the code I agree with Michal that we try to find the
intesection poinlesly even for !MAP_FIXED which slowns down mmap() tiny
little bit which should be fixed.

The fix looks good to me.

-- 
Cyril Hrubis
chrubis@...e.cz
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