Re: [PATCH] kvmalloc: always use vmalloc if CONFIG_DEBUG_VM

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To: Mikulas Patocka <mpatocka@xxxxxxxxxx>, David Miller <davem@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx
Subject: Re: [PATCH] kvmalloc: always use vmalloc if CONFIG_DEBUG_VM
From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Thu, 19 Apr 2018 09:25:48 -0700
Cc: eric.dumazet@xxxxxxxxx, edumazet@xxxxxxxxxx, bhutchings@xxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, mst@xxxxxxxxxx, jasowang@xxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxx, Vlastimil Babka <vbabka@xxxxxxx>
In-reply-to: <alpine.LRH.2.02.1804191207380.31175@file01.intranet.prod.int.rdu2.redhat.com>
References: <alpine.LRH.2.02.1804181029270.19294@file01.intranet.prod.int.rdu2.redhat.com> <3e65977e-53cd-bf09-bc4b-0ce40e9091fe@gmail.com> <alpine.LRH.2.02.1804181218270.19136@file01.intranet.prod.int.rdu2.redhat.com> <20180418.134651.2225112489265654270.davem@davemloft.net> <alpine.LRH.2.02.1804181350050.17942@file01.intranet.prod.int.rdu2.redhat.com> <alpine.LRH.2.02.1804191207380.31175@file01.intranet.prod.int.rdu2.redhat.com>
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On 04/19/2018 09:12 AM, Mikulas Patocka wrote:
> 
> 
> These bugs are hard to reproduce because vmalloc falls back to kmalloc
> only if memory is fragmented.
> 

This sentence is wrong.

.... because kvmalloc() falls back to vmalloc() ...

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  - From: Mikulas Patocka

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