From: Dave Chinner <david@fromorbit.com>
To: Brian Foster <bfoster@redhat.com>
Cc: xfs@oss.sgi.com
Subject: Re: [RFC PATCH 04/11] xfs: update inode allocation transaction reservations for finobt
Date: Thu, 5 Sep 2013 10:59:46 +1000 [thread overview]
Message-ID: <20130905005946.GR23571@dastard> (raw)
In-Reply-To: <1378232708-57156-5-git-send-email-bfoster@redhat.com>
On Tue, Sep 03, 2013 at 02:25:01PM -0400, Brian Foster wrote:
> Update inode allocation transaction reservations for the finobt. A
> create via record modification requires a log reservation for the
> additional finobt record. Any such allocation could result in an
> finobt removal if the inode chunk has become fully allocated, thus
> we include a reservation for a finobt btree merge as well.
> Allocation of a new inode chunk must account for splits in the
> finobt as well as the existing ialloc tree.
These transaction reservation changes are only necessary for
filesystems with free inode btrees, otherwise they just use more log
space than is necessary.
Can you add helper functions for the free inode btree reservations,
and have them return 0 when the feature is not enabled? That way the
code stays pretty clean, is self documenting and doesn't take
unnecessary space when the feature is not enabled....
> Also update XFS_IALLOC_SPACE_RES() to reserve data blocks for
> finobt split/merge scenarios.
Needs to handle the enabled/disabled case, too.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2013-09-05 0:59 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-03 18:24 [RFC PATCH 00/11] xfs: introduce the free inode btree Brian Foster
2013-09-03 18:24 ` [RFC PATCH 01/11] xfs: refactor xfs_ialloc_btree.c to support multiple inobt numbers Brian Foster
2013-09-05 0:36 ` Dave Chinner
2013-09-03 18:24 ` [RFC PATCH 02/11] xfs: reserve v5 superblock read-only compat. feature bit for finobt Brian Foster
2013-09-05 0:39 ` Dave Chinner
2013-09-03 18:25 ` [RFC PATCH 03/11] xfs: support the XFS_BTNUM_FINOBT free inode btree type Brian Foster
2013-09-05 0:54 ` Dave Chinner
2013-09-05 16:17 ` Brian Foster
2013-09-06 0:07 ` Dave Chinner
2013-09-06 11:25 ` Brian Foster
2013-09-06 21:22 ` Dave Chinner
2013-09-03 18:25 ` [RFC PATCH 04/11] xfs: update inode allocation transaction reservations for finobt Brian Foster
2013-09-05 0:59 ` Dave Chinner [this message]
2013-09-05 16:17 ` Brian Foster
2013-09-06 0:11 ` Dave Chinner
2013-09-03 18:25 ` [RFC PATCH 05/11] xfs: update ifree " Brian Foster
2013-09-05 1:00 ` Dave Chinner
2013-09-03 18:25 ` [RFC PATCH 06/11] xfs: use correct transaction reservations in xfs_inactive() Brian Foster
2013-09-05 1:35 ` Dave Chinner
2013-09-05 16:18 ` Brian Foster
2013-09-03 18:25 ` [RFC PATCH 07/11] xfs: retry trans reservation on ENOSPC " Brian Foster
2013-09-05 1:40 ` Dave Chinner
2013-09-05 16:18 ` Brian Foster
2013-09-06 0:17 ` Dave Chinner
2013-09-06 11:30 ` Brian Foster
2013-09-03 18:25 ` [RFC PATCH 08/11] xfs: insert newly allocated inode chunks into the finobt Brian Foster
2013-09-05 2:10 ` Dave Chinner
2013-09-03 18:25 ` [RFC PATCH 09/11] xfs: use and update the finobt on inode allocation Brian Foster
2013-09-05 2:27 ` Dave Chinner
2013-09-05 16:18 ` Brian Foster
2013-09-03 18:25 ` [RFC PATCH 10/11] xfs: update the finobt on inode free Brian Foster
2013-09-05 2:54 ` Dave Chinner
2013-09-05 16:19 ` Brian Foster
2013-09-06 0:28 ` Dave Chinner
2013-09-06 11:39 ` Brian Foster
2013-09-06 21:24 ` Dave Chinner
2013-09-07 12:30 ` Brian Foster
2013-09-08 20:08 ` Michael L. Semon
2013-09-09 2:34 ` Better numbers " Michael L. Semon
2013-09-03 18:25 ` [RFC PATCH 11/11] xfs: add finobt support to growfs Brian Foster
2013-09-05 2:55 ` Dave Chinner
2013-09-05 21:17 ` [RFC PATCH 00/11] xfs: introduce the free inode btree Michael L. Semon
2013-09-06 11:17 ` Brian Foster
2013-09-06 21:35 ` Dave Chinner
2013-09-07 12:31 ` Brian Foster
2013-09-08 1:04 ` Michael L. Semon
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