linux-kernel - Re: [PATCH v2] slob: add size header to all allocations

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Date:   Mon, 25 Oct 2021 14:49:28 -0700
From:   Rustam Kovhaev <rkovhaev@...il.com>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     cl@...ux.com, penberg@...nel.org, rientjes@...gle.com,
        iamjoonsoo.kim@....com, akpm@...ux-foundation.org, corbet@....net,
        djwong@...nel.org, david@...morbit.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, gregkh@...uxfoundation.org,
        viro@...iv.linux.org.uk, dvyukov@...gle.com
Subject: Re: [PATCH v2] slob: add size header to all allocations

On Mon, Oct 25, 2021 at 11:36:53AM +0200, Vlastimil Babka wrote:
> On 10/23/21 08:41, Rustam Kovhaev wrote:
> > Let's prepend both kmalloc() and kmem_cache_alloc() allocations with the
> > size header.
> > It simplifies the slab API and guarantees that both kmem_cache_alloc()
> > and kmalloc() memory could be freed by kfree().
> > 
> > meminfo right after the system boot, without the patch:
> > Slab:              35456 kB
> > 
> > the same, with the patch:
> > Slab:              36160 kB
> > 
> > Link: https://lore.kernel.org/lkml/20210929212347.1139666-1-rkovhaev@gmail.com
> > Signed-off-by: Rustam Kovhaev <rkovhaev@...il.com>
> 
> Seems overal correct to me, thanks! I'll just suggest some improvements:

Thank you, I'll send a v3.