From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: 'Wolfgang Wander' <wwc@rentec.com>, Andrew Morton <akpm@osdl.org>
Cc: mingo@elte.hu, arjanv@redhat.com, linux-mm@kvack.org
Subject: RE: [PATCH] Avoiding mmap fragmentation (against 2.6.12-rc4) to
Date: Wed, 11 May 2005 08:05:01 -0700 [thread overview]
Message-ID: <200505111505.j4BF52g07882@unix-os.sc.intel.com> (raw)
In-Reply-To: <17026.6227.225173.588629@gargle.gargle.HOWL>
Wolfgang Wander wrote on Wednesday, May 11, 2005 7:36 AM
> The patch adresses thes issues by introducing yet another cache
> descriptor cached_hole_size that contains the largest known hole
> size below the current free_area_cache. If a new request comes
> in the size is compared against the cached_hole_size and if the
> request can be filled with a hole below free_area_cache the
> search is started from the base instead.
>
> arch/ia64/kernel/sys_ia64.c | 15 ++++++++++++---
> arch/ppc64/mm/hugetlbpage.c | 34 +++++++++++++++++++++++++++++-----
> arch/sparc64/kernel/sys_sparc.c | 8 ++++++++
To me, the original issue is a specific problem with 32-bit address space
fragmentation. On first glance of the patch, the changes for 64-bit arches
are questionable here. I will work on this.
- Ken
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next prev parent reply other threads:[~2005-05-11 15:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-09 13:30 Fw: [Bug 4520] New: /proc/*/maps fragments too quickly compared to Wolfgang Wander
2005-05-09 21:26 ` Andrew Morton
2005-05-09 21:30 ` Arjan van de Ven
2005-05-10 13:23 ` Wolfgang Wander
2005-05-10 15:35 ` Chen, Kenneth W
2005-05-10 18:58 ` Andrew Morton
2005-05-10 19:07 ` Arjan van de Ven
2005-05-10 19:34 ` Chen, Kenneth W
2005-05-10 19:43 ` Andrew Morton
2005-05-10 19:50 ` Wolfgang Wander
2005-05-10 19:57 ` Andrew Morton
2005-05-11 14:36 ` [PATCH] Avoiding mmap fragmentation (against 2.6.12-rc4) to Wolfgang Wander
2005-05-11 15:05 ` Chen, Kenneth W [this message]
2005-05-12 0:59 ` Andrew Morton
2005-05-12 1:33 ` Wolfgang Wander
2005-05-12 7:07 ` Ingo Molnar
2005-05-12 7:14 ` Ingo Molnar
2005-05-10 19:58 ` Fw: [Bug 4520] New: /proc/*/maps fragments too quickly compared to Ingo Molnar
2005-05-10 20:04 ` Wolfgang Wander
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