From: Dave Chinner <david@fromorbit.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Christoph Hellwig <hch@infradead.org>,
linux-xfs@vger.kernel.org, xfs@oss.sgi.com
Subject: Re: [PATCH 16/71] xfs: log refcount intent items
Date: Fri, 9 Sep 2016 09:13:26 +1000 [thread overview]
Message-ID: <20160908231326.GA30056@dastard> (raw)
In-Reply-To: <20160908191404.GB8969@birch.djwong.org>
On Thu, Sep 08, 2016 at 12:14:04PM -0700, Darrick J. Wong wrote:
> On Tue, Sep 06, 2016 at 08:21:55AM -0700, Christoph Hellwig wrote:
> > > + __uint64_t cui_id;
> > > + struct xfs_ail_cursor cur;
> > > + struct xfs_ail *ailp = log->l_ailp;
> > > +
> > > + cud_formatp = item->ri_buf[0].i_addr;
> > > + ASSERT(item->ri_buf[0].i_len == sizeof(struct xfs_cud_log_format));
> >
> > Should we return -EFSCORRUPTED here instead?
>
> Yes. The RUD recovery routine should probably get that change too.
>
> > > + /* XXX: do nothing for now */
> >
> > What else would be do in the future here?
> >
> > > +static void
> > > +xfs_trans_set_refcount_flags(
> > > + struct xfs_phys_extent *refc,
> > > + enum xfs_refcount_intent_type type)
> > > +{
> > > + refc->pe_flags = 0;
> > > + switch (type) {
> > > + case XFS_REFCOUNT_INCREASE:
> > > + refc->pe_flags |= XFS_REFCOUNT_EXTENT_INCREASE;
> > > + break;
> > > + case XFS_REFCOUNT_DECREASE:
> > > + refc->pe_flags |= XFS_REFCOUNT_EXTENT_DECREASE;
> > > + break;
> > > + case XFS_REFCOUNT_ALLOC_COW:
> > > + refc->pe_flags |= XFS_REFCOUNT_EXTENT_ALLOC_COW;
> > > + break;
> > > + case XFS_REFCOUNT_FREE_COW:
> > > + refc->pe_flags |= XFS_REFCOUNT_EXTENT_FREE_COW;
> > > + break;
> >
> > Is there any good reasons to use a type enum in core, but flags on
> > disk?
>
> I suppose since log structures aren't guaranteed to be platform agnostic
> it's fine to just copy in the in-core enum here.
Carfeul there - enums are not defined to have a fixed size and so
can change from compiler version to compiler version. IOWs, the
enum values can be written idirectly to an on-disk structure, but
the on-disk structure should not be using the enum as the type
definition for whatever gets stored on disk.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2016-09-08 23:13 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-25 23:31 [PATCH v8 00/71] xfs: add reflink and dedupe support Darrick J. Wong
2016-08-25 23:32 ` [PATCH 01/71] xfs: remove xfs_btree_bigkey Darrick J. Wong
2016-09-05 15:04 ` Christoph Hellwig
2016-08-25 23:32 ` [PATCH 02/71] xfs: create a standard btree size calculator code Darrick J. Wong
2016-09-05 15:05 ` Christoph Hellwig
2016-08-25 23:32 ` [PATCH 03/71] xfs: count the blocks in a btree Darrick J. Wong
2016-09-05 15:05 ` Christoph Hellwig
2016-08-25 23:32 ` [PATCH 04/71] xfs: defer should allow ->finish_item to request a new transaction Darrick J. Wong
2016-09-06 6:38 ` Christoph Hellwig
2016-09-06 23:57 ` Darrick J. Wong
2016-08-25 23:32 ` [PATCH 05/71] xfs: introduce tracepoints for AG reservation code Darrick J. Wong
2016-09-06 6:38 ` Christoph Hellwig
2016-08-25 23:32 ` [PATCH 06/71] xfs: set up per-AG free space reservations Darrick J. Wong
2016-09-06 14:53 ` Christoph Hellwig
2016-09-06 17:31 ` Darrick J. Wong
2016-09-08 17:47 ` Darrick J. Wong
2016-08-25 23:32 ` [PATCH 07/71] xfs: define tracepoints for refcount btree activities Darrick J. Wong
2016-09-06 14:54 ` Christoph Hellwig
2016-09-08 18:20 ` Darrick J. Wong
2016-08-25 23:32 ` [PATCH 08/71] xfs: introduce refcount btree definitions Darrick J. Wong
2016-09-06 14:59 ` Christoph Hellwig
2016-09-06 17:13 ` Darrick J. Wong
2016-08-25 23:32 ` [PATCH 09/71] xfs: add refcount btree stats infrastructure Darrick J. Wong
2016-09-06 14:59 ` Christoph Hellwig
2016-08-25 23:33 ` [PATCH 10/71] xfs: refcount btree add more reserved blocks Darrick J. Wong
2016-09-06 15:00 ` Christoph Hellwig
2016-08-25 23:33 ` [PATCH 11/71] xfs: define the on-disk refcount btree format Darrick J. Wong
2016-09-06 15:06 ` Christoph Hellwig
2016-08-25 23:33 ` [PATCH 12/71] xfs: add refcount btree support to growfs Darrick J. Wong
2016-09-06 15:06 ` Christoph Hellwig
2016-08-25 23:33 ` [PATCH 13/71] xfs: account for the refcount btree in the alloc/free log reservation Darrick J. Wong
2016-08-25 23:33 ` [PATCH 14/71] xfs: add refcount btree operations Darrick J. Wong
2016-09-06 15:09 ` Christoph Hellwig
2016-08-25 23:33 ` [PATCH 15/71] xfs: create refcount update intent log items Darrick J. Wong
2016-09-06 15:16 ` Christoph Hellwig
2016-09-06 16:43 ` Darrick J. Wong
2016-09-06 17:03 ` Christoph Hellwig
2016-08-25 23:33 ` [PATCH 16/71] xfs: log refcount intent items Darrick J. Wong
2016-09-06 15:21 ` Christoph Hellwig
2016-09-08 19:14 ` Darrick J. Wong
2016-09-08 23:13 ` Dave Chinner [this message]
2016-09-08 23:16 ` Darrick J. Wong
2016-09-11 12:52 ` Christoph Hellwig
2016-09-12 18:40 ` Darrick J. Wong
2016-09-12 23:28 ` Dave Chinner
2016-08-25 23:33 ` [PATCH 17/71] xfs: adjust refcount of an extent of blocks in refcount btree Darrick J. Wong
2016-08-25 23:33 ` [PATCH 18/71] xfs: connect refcount adjust functions to upper layers Darrick J. Wong
2016-08-25 23:34 ` [PATCH 19/71] xfs: adjust refcount when unmapping file blocks Darrick J. Wong
2016-08-25 23:34 ` [PATCH 20/71] xfs: add refcount btree block detection to log recovery Darrick J. Wong
2016-08-25 23:34 ` [PATCH 21/71] xfs: refcount btree requires more reserved space Darrick J. Wong
2016-08-25 23:34 ` [PATCH 22/71] xfs: introduce reflink utility functions Darrick J. Wong
2016-08-25 23:34 ` [PATCH 23/71] xfs: create bmbt update intent log items Darrick J. Wong
2016-08-25 23:34 ` [PATCH 24/71] xfs: log bmap intent items Darrick J. Wong
2016-08-25 23:34 ` [PATCH 25/71] xfs: map an inode's offset to an exact physical block Darrick J. Wong
2016-08-25 23:34 ` [PATCH 26/71] xfs: pass bmapi flags through to bmap_del_extent Darrick J. Wong
2016-08-25 23:34 ` [PATCH 27/71] xfs: implement deferred bmbt map/unmap operations Darrick J. Wong
2016-08-25 23:35 ` [PATCH 28/71] xfs: when replaying bmap operations, don't let unlinked inodes get reaped Darrick J. Wong
2016-08-25 23:35 ` [PATCH 29/71] xfs: return work remaining at the end of a bunmapi operation Darrick J. Wong
2016-08-25 23:35 ` [PATCH 30/71] xfs: define tracepoints for reflink activities Darrick J. Wong
2016-08-25 23:35 ` [PATCH 31/71] xfs: add reflink feature flag to geometry Darrick J. Wong
2016-08-25 23:35 ` [PATCH 32/71] xfs: don't allow reflinked dir/dev/fifo/socket/pipe files Darrick J. Wong
2016-08-25 23:35 ` [PATCH 33/71] xfs: introduce the CoW fork Darrick J. Wong
2016-08-25 23:35 ` [PATCH 34/71] xfs: support bmapping delalloc extents in " Darrick J. Wong
2016-09-06 15:25 ` Christoph Hellwig
2016-09-06 16:34 ` Darrick J. Wong
2016-09-11 12:59 ` Christoph Hellwig
2016-09-06 23:40 ` Dave Chinner
2016-09-11 12:57 ` Christoph Hellwig
2016-08-25 23:35 ` [PATCH 35/71] xfs: create delalloc extents in " Darrick J. Wong
2016-08-25 23:35 ` [PATCH 36/71] xfs: support allocating delayed " Darrick J. Wong
2016-08-25 23:35 ` [PATCH 37/71] xfs: allocate " Darrick J. Wong
2016-08-25 23:36 ` [PATCH 38/71] xfs: support removing extents from " Darrick J. Wong
2016-08-25 23:36 ` [PATCH 39/71] xfs: move mappings from cow fork to data fork after copy-write Darrick J. Wong
2016-08-25 23:36 ` [PATCH 40/71] xfs: report shared extents through the iomap interface Darrick J. Wong
2016-08-25 23:36 ` [PATCH 41/71] xfs: implement CoW for directio writes Darrick J. Wong
2016-08-25 23:36 ` [PATCH 42/71] xfs: cancel CoW reservations and clear inode reflink flag when freeing blocks Darrick J. Wong
2016-08-25 23:36 ` [PATCH 43/71] xfs: cancel pending CoW reservations when destroying inodes Darrick J. Wong
2016-08-25 23:36 ` [PATCH 44/71] xfs: store in-progress CoW allocations in the refcount btree Darrick J. Wong
2016-08-25 23:36 ` [PATCH 45/71] xfs: reflink extents from one file to another Darrick J. Wong
2016-08-25 23:36 ` [PATCH 46/71] xfs: add clone file and clone range vfs functions Darrick J. Wong
2016-08-25 23:37 ` [PATCH 47/71] xfs: add dedupe range vfs function Darrick J. Wong
2016-08-25 23:37 ` [PATCH 48/71] xfs: teach get_bmapx about shared extents and the CoW fork Darrick J. Wong
2016-08-25 23:37 ` [PATCH 49/71] xfs: swap inode reflink flags when swapping inode extents Darrick J. Wong
2016-08-25 23:37 ` [PATCH 50/71] xfs: unshare a range of blocks via fallocate Darrick J. Wong
2016-08-25 23:37 ` [PATCH 51/71] xfs: CoW shared EOF block when truncating file Darrick J. Wong
2016-08-25 23:37 ` [PATCH 52/71] xfs: support FS_XFLAG_REFLINK on reflink filesystems Darrick J. Wong
2016-08-25 23:37 ` [PATCH 53/71] xfs: create a separate cow extent size hint for the allocator Darrick J. Wong
2016-08-25 23:37 ` [PATCH 54/71] xfs: preallocate blocks for worst-case btree expansion Darrick J. Wong
2016-08-25 23:37 ` [PATCH 55/71] xfs: don't allow reflink when the AG is low on space Darrick J. Wong
2016-08-25 23:38 ` [PATCH 56/71] xfs: try other AGs to allocate a BMBT block Darrick J. Wong
2016-08-25 23:38 ` [PATCH 57/71] xfs: promote buffered writes to CoW when cowextsz is set Darrick J. Wong
2016-08-25 23:38 ` [PATCH 58/71] xfs: garbage collect old cowextsz reservations Darrick J. Wong
2016-09-24 19:42 ` Christoph Hellwig
2016-09-26 21:52 ` Darrick J. Wong
2016-09-27 18:50 ` Christoph Hellwig
2016-09-27 19:29 ` Darrick J. Wong
2016-09-27 20:15 ` Christoph Hellwig
2016-09-27 20:25 ` Darrick J. Wong
2016-08-25 23:38 ` [PATCH 59/71] xfs: provide switch to force filesystem to copy-on-write all the time Darrick J. Wong
2016-08-25 23:38 ` [PATCH 60/71] xfs: increase log reservations for reflink Darrick J. Wong
2016-08-25 23:38 ` [PATCH 61/71] xfs: add shared rmap map/unmap/convert log item types Darrick J. Wong
2016-08-25 23:38 ` [PATCH 62/71] xfs: use interval query for rmap alloc operations on shared files Darrick J. Wong
2016-08-25 23:38 ` [PATCH 63/71] xfs: convert unwritten status of reverse mappings for " Darrick J. Wong
2016-08-25 23:38 ` [PATCH 64/71] xfs: set a default CoW extent size of 32 blocks Darrick J. Wong
2016-08-25 23:38 ` [PATCH 65/71] xfs: check for invalid inode reflink flags Darrick J. Wong
2016-08-25 23:39 ` [PATCH 66/71] xfs: don't mix reflink and DAX mode for now Darrick J. Wong
2016-08-25 23:39 ` [PATCH 67/71] xfs: fail ->bmap for reflink inodes Darrick J. Wong
2016-09-06 15:29 ` Christoph Hellwig
2016-09-06 16:26 ` Darrick J. Wong
2016-09-06 17:02 ` Christoph Hellwig
2016-08-25 23:39 ` [PATCH 68/71] xfs: recognize the reflink feature bit Darrick J. Wong
2016-08-25 23:39 ` [PATCH 69/71] xfs: various swapext cleanups Darrick J. Wong
2016-08-25 23:39 ` [PATCH 70/71] xfs: refactor swapext code Darrick J. Wong
2016-08-25 23:39 ` [PATCH 71/71] xfs: implement swapext for rmap filesystems Darrick J. Wong
2016-08-26 12:56 ` [PATCH v8 00/71] xfs: add reflink and dedupe support Christoph Hellwig
2016-08-26 16:28 ` Darrick J. Wong
2016-08-26 18:42 ` Darrick J. Wong
2016-08-26 14:08 ` Brian Foster
2016-08-26 18:44 ` [PATCH 72/71] xfs: track log done items directly in the deferred pending work item Darrick J. Wong
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