Re: [PATCH v6 4/4] hugetlb: allow to free gigantic pages regardless of the configuration

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To: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Subject: Re: [PATCH v6 4/4] hugetlb: allow to free gigantic pages regardless of the configuration
From: Alex Ghiti <alex@xxxxxxxx>
Date: Sat, 9 Mar 2019 04:32:05 -0500
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will.deacon@xxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, Paul Mackerras <paulus@xxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Martin Schwidefsky <schwidefsky@xxxxxxxxxx>, Heiko Carstens <heiko.carstens@xxxxxxxxxx>, Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>, Rich Felker <dalias@xxxxxxxx>, "David S . Miller" <davem@xxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, "H . Peter Anvin" <hpa@xxxxxxxxx>, x86@xxxxxxxxxx, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
In-reply-to: <ee22103c-5060-e39e-7085-87c07d674cd8@oracle.com>
References: <20190307132015.26970-1-alex@ghiti.fr> <20190307132015.26970-5-alex@ghiti.fr> <ee22103c-5060-e39e-7085-87c07d674cd8@oracle.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

On 3/8/19 2:05 PM, Mike Kravetz wrote:

On 3/7/19 5:20 AM, Alexandre Ghiti wrote:

On systems without CONTIG_ALLOC activated but that support gigantic pages,
boottime reserved gigantic pages can not be freed at all. This patch
simply enables the possibility to hand back those pages to memory
allocator.

Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> [sparc]

Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>

Thanks Mike,

Alex

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References:
- [PATCH v6 0/4] Fix free/allocation of runtime gigantic pages
  - From: Alexandre Ghiti
- [PATCH v6 4/4] hugetlb: allow to free gigantic pages regardless of the configuration
  - From: Alexandre Ghiti
- Re: [PATCH v6 4/4] hugetlb: allow to free gigantic pages regardless of the configuration
  - From: Mike Kravetz

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