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From: Christoph Hellwig <hch@lst.de>
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
	Chandan Babu R <chandan.babu@oracle.com>,
	Dave Chinner <david@fromorbit.com>,
	linux-xfs@vger.kernel.org
Subject: Re: [PATCH 04/13] xfs: move RT inode locking out of __xfs_bunmapi
Date: Wed, 27 Mar 2024 18:06:32 +0100	[thread overview]
Message-ID: <20240327170632.GC32019@lst.de> (raw)
In-Reply-To: <20240327150755.GX6390@frogsfrogsfrogs>

On Wed, Mar 27, 2024 at 08:07:55AM -0700, Darrick J. Wong wrote:
> How does it happen that xfs_rtfree_blocks gets called more than once in
> the same transaction?  Is that simply the effect of xfs_bunmapi_range
> and xfs_unmap_exten calling __xfs_bunmapi with
> nextents == XFS_ITRUNC_MAX_EXTENTS==2?

Yes.

> What if we simply didn't unmap multiple extents per bunmapi call for
> realtime files?  Would that eliminate the need for
> XFS_TRANS_RTBITMAP_LOCKED?

Probably.  Not that I really want to rock that boat now when we'll
also have the extent free item / defer ops based path soon.


  reply	other threads:[~2024-03-27 17:06 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-27 11:03 bring back RT delalloc support v5 Christoph Hellwig
2024-03-27 11:03 ` [PATCH 01/13] xfs: make XFS_TRANS_LOWMODE match the other XFS_TRANS_ definitions Christoph Hellwig
2024-03-28  3:08   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 02/13] xfs: refactor realtime inode locking Christoph Hellwig
2024-03-28  3:15   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 03/13] xfs: free RT extents after updating the bmap btree Christoph Hellwig
2024-03-27 14:55   ` Darrick J. Wong
2024-03-27 17:03     ` Christoph Hellwig
2024-03-28  4:13   ` Dave Chinner
2024-03-29  4:14     ` Christoph Hellwig
2024-03-30 21:55       ` Dave Chinner
2024-03-27 11:03 ` [PATCH 04/13] xfs: move RT inode locking out of __xfs_bunmapi Christoph Hellwig
2024-03-27 15:07   ` Darrick J. Wong
2024-03-27 17:06     ` Christoph Hellwig [this message]
2024-03-27 18:06       ` Darrick J. Wong
2024-03-27 18:12         ` Christoph Hellwig
2024-03-28  4:15   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 05/13] xfs: block deltas in xfs_trans_unreserve_and_mod_sb must be positive Christoph Hellwig
2024-03-28  4:16   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 06/13] xfs: split xfs_mod_freecounter Christoph Hellwig
2024-03-27 15:12   ` Darrick J. Wong
2024-03-28  4:18   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 07/13] xfs: reinstate RT support in xfs_bmapi_reserve_delalloc Christoph Hellwig
2024-03-28  4:20   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 08/13] xfs: cleanup fdblock/frextent accounting in xfs_bmap_del_extent_delay Christoph Hellwig
2024-03-28  4:22   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 09/13] xfs: support RT inodes in xfs_mod_delalloc Christoph Hellwig
2024-03-27 15:20   ` Darrick J. Wong
2024-03-27 17:05     ` Christoph Hellwig
2024-03-28  4:27   ` Dave Chinner
2024-03-28  4:34     ` Christoph Hellwig
2024-03-28  4:42       ` Dave Chinner
2024-03-28  8:25         ` Christoph Hellwig
2024-03-28 21:25           ` Dave Chinner
2024-03-27 11:03 ` [PATCH 10/13] xfs: look at m_frextents in xfs_iomap_prealloc_size for RT allocations Christoph Hellwig
2024-03-28  4:32   ` Dave Chinner
2024-03-28  4:34     ` Christoph Hellwig
2024-03-27 11:03 ` [PATCH 11/13] xfs: rework splitting of indirect block reservations Christoph Hellwig
2024-03-27 15:14   ` Darrick J. Wong
2024-03-28  4:35   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 12/13] xfs: stop the steal (of data blocks for RT indirect blocks) Christoph Hellwig
2024-03-27 15:18   ` Darrick J. Wong
2024-03-28  4:36   ` Dave Chinner
2024-03-27 11:03 ` [PATCH 13/13] xfs: reinstate delalloc for RT inodes (if sb_rextsize == 1) Christoph Hellwig
2024-03-28  4:39   ` Dave Chinner
  -- strict thread matches above, loose matches on Subject: below --
2024-04-22 11:20 bring back RT delalloc support v6 Christoph Hellwig
2024-04-22 11:20 ` [PATCH 04/13] xfs: move RT inode locking out of __xfs_bunmapi Christoph Hellwig

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