linux-kernel - Re: [PATCH] huge tmpfs: fix Committed

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Message-ID: <20160923092523.GA29313@node.shutemov.name>
Date:   Fri, 23 Sep 2016 12:25:23 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Hugh Dickins <hughd@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] huge tmpfs: fix Committed_AS leak

On Thu, Sep 22, 2016 at 10:37:03AM -0700, Hugh Dickins wrote:
> Under swapping load on huge tmpfs, /proc/meminfo's Committed_AS grows
> bigger and bigger: just a cosmetic issue for most users, but disabling
> for those who run without overcommit (/proc/sys/vm/overcommit_memory 2).
> 
> shmem_uncharge() was forgetting to unaccount __vm_enough_memory's charge,
> and shmem_charge() was forgetting it on the filesystem-full error path.
> 
> Fixes: 800d8c63b2e9 ("shmem: add huge pages support")
> Signed-off-by: Hugh Dickins <hughd@...gle.com>

Acked-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

-- 
 Kirill A. Shutemov