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From: Eric Sandeen <sandeen@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>, Alex Tomas <alex@clusterfs.com>,
	"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
Subject: Re: booked-page-flag.patch
Date: Thu, 15 Feb 2007 09:18:34 -0800	[thread overview]
Message-ID: <45D495EA.3060200@redhat.com> (raw)
In-Reply-To: <20070215004504.023a90f0.akpm@linux-foundation.org>

Andrew Morton wrote:
> Sorry, we're seriously, seriously, seriously short on flags in the page
> struct and this patch is going to need one heck of a good case for it to be
> acceptable.

This was for the delayed allocation patchset, right; and by managing 
this at the page level that means we can't do this for block size < page 
size, I think...

There are already buffer head flags for delalloc (block to be allocated 
  on flush) and unwritten (actual block allocated to a file but not yet 
written) in the vfs - shouldn't we be looking at using those?

Unless there is a clear path from this patchset to one that supports 
blocks < page, I'm hesitant about it... but I know I'm being a bit of an 
armchair quarterback here, and I'll try to set aside some time to give 
this a better look.

Thanks,
-Eric

  parent reply	other threads:[~2007-02-15 17:19 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-15  8:45 booked-page-flag.patch Andrew Morton
2007-02-15 14:03 ` booked-page-flag.patch Alex Tomas
2007-02-15 17:18 ` Eric Sandeen [this message]
2007-02-15 17:30   ` booked-page-flag.patch Alex Tomas
2007-02-15 20:56     ` booked-page-flag.patch Andrew Morton
2007-02-15 21:07       ` booked-page-flag.patch Alex Tomas
2007-02-15 23:23         ` booked-page-flag.patch Andrew Morton
2007-02-16  7:30           ` booked-page-flag.patch Alex Tomas
2007-02-16  7:46             ` booked-page-flag.patch Andrew Morton
2007-02-16  7:56               ` booked-page-flag.patch Alex Tomas
2007-02-16  8:06                 ` booked-page-flag.patch Andrew Morton
2007-02-16 12:14                   ` booked-page-flag.patch Andreas Dilger
2007-02-16 16:02               ` booked-page-flag.patch Dave Kleikamp
2007-02-16 15:03           ` booked-page-flag.patch Theodore Tso
2007-02-15 20:21   ` booked-page-flag.patch Andrew Morton
2007-02-16 12:17   ` booked-page-flag.patch Andreas Dilger

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