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Date: Sun, 6 May 2007 23:49:25 -0700
From: William Lee Irwin III <wli@holomorphy.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: David Chinner <dgc@sgi.com>, Theodore Tso <tytso@mit.edu>,
       Andrew Morton <akpm@linux-foundation.org>, clameter@sgi.com,
       linux-kernel@vger.kernel.org, Mel Gorman <mel@skynet.ie>,
       Jens Axboe <jens.axboe@oracle.com>,
       Badari Pulavarty <pbadari@gmail.com>,
       Maxim Levitsky <maximlevitsky@gmail.com>
Subject: Re: [00/17] Large Blocksize Support V3
Message-ID: <20070507064925.GB19966@holomorphy.com>
References: <20070427060921.GA77450368@melbourne.sgi.com> <20070427000403.6013d1fa.akpm@linux-foundation.org> <20070427080321.GG32602149@melbourne.sgi.com> <20070427014849.41f383f7.akpm@linux-foundation.org> <20070427164535.GH24852@thunk.org> <m1abwku30d.fsf@ebiederm.dsl.xmission.com> <20070507042925.GT32602149@melbourne.sgi.com> <m1tzupkzmw.fsf@ebiederm.dsl.xmission.com> <20070507052729.GV32602149@melbourne.sgi.com> <m17irlkubc.fsf@ebiederm.dsl.xmission.com>
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David Chinner <dgc@sgi.com> writes:
>> Right - so how do we efficiently  manipulate data inside a large
>> block that spans multiple discontigous pages if we don't vmap
>> it?

On Mon, May 07, 2007 at 12:43:19AM -0600, Eric W. Biederman wrote:
> You don't manipulate data except for copy_from_user, copy_to_user.
> That is easy comparatively to deal with, and certainly doesn't
> need vmap.
> Meta-data may be trickier, but a lot of that depends on your
> individual filesystem and how it organizes it's meta-data.

I wonder what happened to my pagearray patches.


-- wli
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