linux-kernel - Re: [PATCH] mm: Free unused pages in kmalloc

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Message-ID: <20200628163539.GA25523@casper.infradead.org>
Date:   Sun, 28 Jun 2020 17:35:39 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Markus Elfring <Markus.Elfring@....de>
Cc:     Long Li <lonuxli.64@...il.com>, linux-mm@...ck.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Lameter <cl@...ux.com>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Pekka Enberg <penberg@...nel.org>
Subject: Re: [PATCH] mm: Free unused pages in kmalloc_order()

On Sun, Jun 28, 2020 at 01:17:59PM +0200, Markus Elfring wrote:
> > kmalloc(1024, GFP_HIGHUSER) can allocate memory normally,
> > kmalloc(64*1024, GFP_HIGHUSER) will cause a memory leak,
> 
> Would you like to explain the influence of the selected allocation size
> in a different way?

Markus, this is not useful.  Please stop.