From: Christoph Hellwig <hch@infradead.org>
To: Ray Bryant <raybry@engr.sgi.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Ray Bryant <raybry@sgi.com>,
Hirokazu Takahashi <taka@valinux.co.jp>,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>,
Andi Kleen <ak@suse.de>, Dave Hansen <haveblue@us.ibm.com>,
linux-mm <linux-mm@kvack.org>, Nathan Scott <nathans@sgi.com>,
Ray Bryant <raybry@austin.rr.com>,
lhms-devel@lists.sourceforge.net
Subject: Re: [Lhms-devel] Re: [PATCH 2.6.12-rc3 1/8] mm: manual page migration-rc2 -- xfs-extended-attributes-rc2.patch
Date: Wed, 11 May 2005 20:50:03 +0100 [thread overview]
Message-ID: <20050511195003.GA2468@infradead.org> (raw)
In-Reply-To: <4281F650.2020807@engr.sgi.com>
On Wed, May 11, 2005 at 07:10:56AM -0500, Ray Bryant wrote:
> Is the issue here the use of extended attributes, period, or the use of the
> system name space?
The former.
> I would observe that after lengthy discussion on this topic in February
> with Andi, use of extended attributes was agreed upon as the preferred
> solution. Your alternative (As I recall: modifying the dynamic loader
> to mark mapped files in memory as shared libraries, and requiring a new
> mmap() flag to mark files as non-migratable) strikes me as more
> complicated and even harder to get accepted by the community, since it
> touches not only the kernel, but glibc as well.
But it's the right thing to do. Non-migratability is not an attribute
of a file but a memory region. Being able to set it for individual
mappings and possible even modifying it with a new MADVISE subcall
makes sense.
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next prev parent reply other threads:[~2005-05-11 19:50 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-11 4:37 [PATCH 2.6.12-rc3 0/8] mm: manual page migration-rc2 -- overview Ray Bryant
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 1/8] mm: manual page migration-rc2 -- xfs-extended-attributes-rc2.patch Ray Bryant
2005-05-11 7:15 ` Christoph Hellwig
2005-05-11 12:10 ` [Lhms-devel] " Ray Bryant
2005-05-11 12:59 ` Andi Kleen
2005-05-11 18:43 ` Ray Bryant
2005-05-11 19:32 ` Andi Kleen
2005-05-11 20:00 ` Christoph Hellwig
2005-05-11 22:04 ` Ray Bryant
2005-05-12 10:45 ` Christoph Hellwig
2005-05-17 4:22 ` Ray Bryant
2005-05-18 6:20 ` Paul Jackson
2005-05-18 14:49 ` Ray Bryant
2005-05-20 22:26 ` Ray Bryant
2005-05-23 17:50 ` Steve Longerbeam
2005-05-24 4:53 ` Ray Bryant
2005-05-24 20:59 ` Christoph Lameter
2005-05-24 21:04 ` Martin J. Bligh
2005-05-25 6:42 ` Ray Bryant
2005-05-28 8:40 ` Christoph Hellwig
2005-05-28 16:12 ` Ray Bryant
2005-05-11 19:50 ` Christoph Hellwig [this message]
2005-05-11 21:30 ` Ray Bryant
2005-05-12 9:55 ` Christoph Hellwig
2005-05-12 15:47 ` Ray Bryant
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 2/8] mm: manual page migration-rc2 -- xfs-migrate-page-rc2.patch Ray Bryant
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 3/8] mm: manual page migration-rc2 -- add-node_map-arg-to-try_to_migrate_pages-rc2.patch Ray Bryant
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 4/8] mm: manual page migration-rc2 -- add-sys_migrate_pages-rc2.patch Ray Bryant
2005-05-11 8:24 ` Christoph Hellwig
2005-05-18 19:07 ` Ray Bryant
2005-05-28 9:14 ` Christoph Hellwig
2005-05-28 15:53 ` Ray Bryant
2005-05-11 13:23 ` Hirokazu Takahashi
2005-05-11 13:26 ` Hirokazu Takahashi
2005-05-11 14:06 ` Ray Bryant
2005-05-12 6:41 ` Hirokazu Takahashi
2005-05-12 16:41 ` Ray Bryant
2005-05-12 23:50 ` Hirokazu Takahashi
2005-05-13 9:59 ` [Lhms-devel] " Ray Bryant
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 5/8] mm: manual page migration-rc2 -- sys_migrate_pages-xattr-support-rc2.patch Ray Bryant
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 6/8] mm: manual page migration-rc2 -- sys_migrate_pages-mempolicy-migration-rc2.patch Ray Bryant
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 7/8] mm: manual page migration-rc2 -- sys_migrate_pages-cpuset-support-rc2.patch Ray Bryant
2005-05-11 12:37 ` Paul Jackson
2005-05-11 14:20 ` Ray Bryant
2005-05-11 18:55 ` [Lhms-devel] " Paul Jackson
2005-05-11 4:38 ` [PATCH 2.6.12-rc3 8/8] mm: manual page migration-rc2 -- sys_migrate_pages-permissions-check-rc2.patch Ray Bryant
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