From: Dave Chinner <david@fromorbit.com>
To: Mark Tinguely <tinguely@sgi.com>
Cc: xfs@oss.sgi.com
Subject: ***** SUSPECTED SPAM ***** Re: [PATCH 47/49] xfs: Add read-only support for dirent filetype field
Date: Mon, 12 Aug 2013 10:33:37 +1000 [thread overview]
Message-ID: <20130812003337.GJ12779@dastard> (raw)
In-Reply-To: <52016716.3080807@sgi.com>
On Tue, Aug 06, 2013 at 04:13:58PM -0500, Mark Tinguely wrote:
> On 07/19/13 01:45, Dave Chinner wrote:
> >From: Dave Chinner<dchinner@redhat.com>
> >
> >Add support for the file type field in directory entries so that
> >readdir can return the type of the inode the dirent points to to
> >userspace without first having to read the inode off disk.
> >
> >The encoding of the type field is a single byte that is added to the
> >end of the directory entry name length. For all intents and
> >purposes, it appends a "hidden" byte to the name field which
> >contains the type information. As the directory entry is already of
> >dynamic size, helpers are already required to access and decode the
> >direct entry structures.
> >
> >Hence the relevent extraction and iteration helpers are updated to
> >understand the hidden byte. Helpers for reading and writing the
> >filetype field from the directory entries are also added. Only the
> >read helpers are used by this patch. It also adds all the code
> >necessary to read the type information out of the dirents on disk.
> >
> >Further we add the superblock feature bit and helpers to indicate
> >that we understand the on-disk format change. This is not a
> >compatible change - existing kernels cannot read the new format
> >successfully - so an incompatible feature flag is added. We don't
> >yet allow filesystems to mount with this flag yet - that will be
> >added once write support is added.
> >
> >Finally, the code to take the type from the VFS, convert it to an
> >XFS on-disk type and put it into the xfs_name structures passed
> >around is added, but the directory code does not use this field yet.
> >That will be in the next patch.
> >
> >Signed-off-by: Dave Chinner<dchinner@redhat.com>
> >---
>
> Same as kernel patch (48/49) - written to support only v3 inodes. This
> should support v2 and v3 inodes.
It's a directory entry format change - it has nothing to do with the
version of the inode.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2013-08-12 0:34 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-19 6:44 [PATCH 00/49] xfsprogs: patches for crc-dev branch Dave Chinner
2013-07-19 6:44 ` [PATCH 01/49] xfsprogs: introduce xfs_icreate.h Dave Chinner
2013-08-01 18:07 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 02/49] xfsprogs: port inode create transaction changes Dave Chinner
2013-08-01 19:01 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 03/49] xfsprogs: teach logprint about icreate transaction Dave Chinner
2013-08-01 21:30 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 04/49] libxfs: fix directory/attribute format issues Dave Chinner
2013-08-02 13:10 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 05/49] libxfs: ensure btree root split sets blkno correctly Dave Chinner
2013-08-02 13:12 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 06/49] libxfs: fix byte swapping on constants Dave Chinner
2013-08-02 13:51 ` Mark Tinguely
2013-08-12 0:03 ` ***** SUSPECTED SPAM ***** " Dave Chinner
2013-07-19 6:44 ` [PATCH 07/49] libxfs: sync xfs_da_btree.c Dave Chinner
2013-08-02 14:22 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 08/49] libxfs: update xfs_alloc to current kernel version Dave Chinner
2013-08-02 15:11 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 09/49] libxfs: sync attr code with kernel Dave Chinner
2013-08-02 16:02 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 10/49] libxfs: sync dir2 kernel differences Dave Chinner
2013-08-02 16:25 ` Mark Tinguely
2013-08-08 22:04 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 11/49] libxfs: sync xfs_ialloc.c to the kernel code Dave Chinner
2013-08-02 18:08 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 12/49] xfsprogs: define min/max once and use them everywhere Dave Chinner
2013-08-02 18:42 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 13/49] libxfs: fix compile warnings Dave Chinner
2013-08-02 21:13 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 14/49] xfs: remove local fork format handling from xfs_bmapi_write() Dave Chinner
2013-08-02 21:42 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 15/49] libxfs: local to remote format support of remote symlinks Dave Chinner
2013-08-02 22:22 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 16/49] xfs: separate out log format definitions Dave Chinner
2013-08-03 15:15 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 17/49] xfs: split out inode log item format definition Dave Chinner
2013-08-03 15:23 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 18/49] xfs: split out buf log item format definitions Dave Chinner
2013-08-04 23:37 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 19/49] xfs: split out inode log item format definition Dave Chinner
2013-08-04 23:41 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 20/49] xfs: separate dquot on disk format definitions out of xfs_quota.h Dave Chinner
2013-08-05 14:18 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 21/49] xfs: separate icreate log format definitions from xfs_icreate_item.h Dave Chinner
2013-08-05 14:27 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 22/49] xfs: split out on-disk transaction definitions Dave Chinner
2013-08-05 15:22 ` Mark Tinguely
2013-08-05 15:24 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 23/49] xfs: introduce xfs_rtalloc_defs.h Dave Chinner
2013-08-05 18:53 ` Mark Tinguely
2013-07-19 6:44 ` [PATCH 24/49] xfs: introduce xfs_quota_defs.h Dave Chinner
2013-08-05 19:09 ` Mark Tinguely
2013-08-12 0:24 ` ***** SUSPECTED SPAM ***** " Dave Chinner
2013-07-19 6:45 ` [PATCH 25/49] libxfs: introduce xfs_trans_resv.c Dave Chinner
2013-08-05 20:16 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 26/49] libxfs: move transaction code to trans.c Dave Chinner
2013-08-05 20:51 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 27/49] xfs: move inode fork definitions to a new header file Dave Chinner
2013-08-05 21:39 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 28/49] xfs: move unrealted definitions out of xfs_inode.h Dave Chinner
2013-08-05 21:57 ` Mark Tinguely
2013-08-12 0:30 ` ***** SUSPECTED SPAM ***** " Dave Chinner
2013-07-19 6:45 ` [PATCH 29/49] xfs: introduce xfs_inode_buf.c for inode buffer operations Dave Chinner
2013-08-06 13:25 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 30/49] xfs: split out the remote symlink handling Dave Chinner
2013-07-19 6:45 ` [PATCH 31/49] libxfs: switch over to xfs_sb.c and remove xfs_mount.c Dave Chinner
2013-07-19 6:45 ` [PATCH 32/49] xfs: create xfs_bmap_util.[ch] Dave Chinner
2013-08-06 15:13 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 33/49] xfsprogs: sync minor kernel header differences Dave Chinner
2013-08-06 15:26 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 34/49] xfs: don't special case shared superblock mounts Dave Chinner
2013-08-06 15:33 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 35/49] xfs: move swap extent code to xfs_extent_ops Dave Chinner
2013-08-06 15:41 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 36/49] xfs: kill __KERNEL__ check for debug code in allocation code Dave Chinner
2013-08-06 15:52 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 37/49] xfs: remove __KERNEL__ from debug code Dave Chinner
2013-08-06 16:07 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 38/49] xfs: remove __KERNEL__ check from xfs_dir2_leaf.c Dave Chinner
2013-08-06 16:12 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 39/49] xfs: move kernel specific type definitions to xfs.h Dave Chinner
2013-08-06 16:16 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 40/49] xfs: make struct xfs_perag kernel only Dave Chinner
2013-08-06 16:28 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 41/49] xfs: Introduce a new structure to hold transaction reservation items Dave Chinner
2013-08-06 18:23 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 42/49] xfs: Introduce tr_fsyncts to m_reservation Dave Chinner
2013-08-06 18:33 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 43/49] xfs: Make writeid transaction use tr_writeid Dave Chinner
2013-08-06 18:38 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 44/49] xfs: refactor xfs_trans_reserve() interface Dave Chinner
2013-08-06 19:12 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 45/49] xfs: Get rid of all XFS_XXX_LOG_RES() macro Dave Chinner
2013-08-06 19:23 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 46/49] xfs: Add xfs_log_rlimit.c Dave Chinner
2013-08-06 20:31 ` Mark Tinguely
2013-07-19 6:45 ` [PATCH 47/49] xfs: Add read-only support for dirent filetype field Dave Chinner
2013-08-06 21:13 ` Mark Tinguely
2013-08-12 0:33 ` Dave Chinner [this message]
2013-07-19 6:45 ` [PATCH 48/49] xfs: Add write " Dave Chinner
2013-07-19 6:45 ` [PATCH 49/49] xfsprogs: add dtype support to mkfs and db Dave Chinner
2013-07-21 6:34 ` [PATCH 00/49] xfsprogs: patches for crc-dev branch Michael L. Semon
2013-07-22 23:32 ` Dave Chinner
2013-07-23 3:36 ` Michael L. Semon
2013-07-23 4:44 ` Dave Chinner
2013-07-23 21:02 ` Michael L. Semon
2013-07-24 3:52 ` Dave Chinner
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