From: Christoph Hellwig <hch@infradead.org>
To: John Garry <john.g.garry@oracle.com>
Cc: brauner@kernel.org, djwong@kernel.org, cem@kernel.org,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, ojaswin@linux.ibm.com,
ritesh.list@gmail.com, martin.petersen@oracle.com
Subject: Re: [PATCH v5 09/10] xfs: Allow block allocator to take an alignment hint
Date: Wed, 12 Mar 2025 00:42:39 -0700 [thread overview]
Message-ID: <Z9E679YhzP6grfDV@infradead.org> (raw)
In-Reply-To: <20250310183946.932054-10-john.g.garry@oracle.com>
> else if (ap->datatype & XFS_ALLOC_USERDATA)
> align = xfs_get_extsz_hint(ap->ip);
> +
> + if (align > 1 && (ap->flags & XFS_BMAPI_EXTSZALIGN))
> + args->alignment = align;
> +
Add a comment please.
> +/* Try to align allocations to the extent size hint */
> +#define XFS_BMAPI_EXTSZALIGN (1u << 11)
Shouldn't we be doing this by default for any extent size hint
based allocations?
> bool found;
> bool atomic_sw = flags & XFS_REFLINK_ATOMIC_SW;
> + uint32_t bmapi_flags = XFS_BMAPI_COWFORK |
> + XFS_BMAPI_PREALLOC;
> +
> + if (atomic_sw)
> + bmapi_flags |= XFS_BMAPI_EXTSZALIGN;
Please add a comment why you are doing this.
next prev parent reply other threads:[~2025-03-12 7:42 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-10 18:39 [PATCH v5 00/10] large atomic writes for xfs with CoW John Garry
2025-03-10 18:39 ` [PATCH v5 01/10] xfs: Pass flags to xfs_reflink_allocate_cow() John Garry
2025-03-12 7:15 ` Christoph Hellwig
2025-03-12 8:19 ` John Garry
2025-03-10 18:39 ` [PATCH v5 02/10] xfs: Switch atomic write size check in xfs_file_write_iter() John Garry
2025-03-12 7:17 ` Christoph Hellwig
2025-03-12 8:21 ` John Garry
2025-03-10 18:39 ` [PATCH v5 03/10] xfs: Refactor xfs_reflink_end_cow_extent() John Garry
2025-03-12 7:24 ` Christoph Hellwig
2025-03-12 8:27 ` John Garry
2025-03-12 8:35 ` Christoph Hellwig
2025-03-12 15:46 ` Darrick J. Wong
2025-03-12 22:06 ` John Garry
2025-03-12 23:22 ` Darrick J. Wong
2025-03-13 1:25 ` Dave Chinner
2025-03-13 4:51 ` Darrick J. Wong
2025-03-13 6:11 ` John Garry
2025-03-18 0:43 ` Dave Chinner
2025-03-13 7:21 ` Dave Chinner
2025-03-22 5:19 ` Darrick J. Wong
2025-03-10 18:39 ` [PATCH v5 04/10] xfs: Reflink CoW-based atomic write support John Garry
2025-03-12 7:27 ` Christoph Hellwig
2025-03-12 9:13 ` John Garry
2025-03-12 13:45 ` Christoph Hellwig
2025-03-12 14:48 ` John Garry
2025-03-10 18:39 ` [PATCH v5 05/10] xfs: Iomap SW-based " John Garry
2025-03-12 7:37 ` Christoph Hellwig
2025-03-12 9:00 ` John Garry
2025-03-12 13:52 ` Christoph Hellwig
2025-03-12 14:57 ` John Garry
2025-03-12 15:55 ` Christoph Hellwig
2025-03-12 16:11 ` John Garry
2025-03-10 18:39 ` [PATCH v5 06/10] xfs: Add xfs_file_dio_write_atomic() John Garry
2025-03-10 18:39 ` [PATCH v5 07/10] xfs: Commit CoW-based atomic writes atomically John Garry
2025-03-12 7:39 ` Christoph Hellwig
2025-03-12 9:04 ` John Garry
2025-03-12 13:54 ` Christoph Hellwig
2025-03-12 15:01 ` John Garry
2025-03-10 18:39 ` [PATCH v5 08/10] xfs: Update atomic write max size John Garry
2025-03-11 14:40 ` Carlos Maiolino
2025-03-12 7:41 ` Christoph Hellwig
2025-03-12 8:09 ` John Garry
2025-03-12 8:13 ` Christoph Hellwig
2025-03-12 8:14 ` John Garry
2025-03-10 18:39 ` [PATCH v5 09/10] xfs: Allow block allocator to take an alignment hint John Garry
2025-03-12 7:42 ` Christoph Hellwig [this message]
2025-03-12 8:05 ` John Garry
2025-03-12 13:45 ` Christoph Hellwig
2025-03-12 14:47 ` John Garry
2025-03-12 16:00 ` Darrick J. Wong
2025-03-12 16:28 ` John Garry
2025-03-10 18:39 ` [PATCH RFC v5 10/10] iomap: Rename ATOMIC flags again John Garry
2025-03-12 7:13 ` Christoph Hellwig
2025-03-12 23:59 ` Dave Chinner
2025-03-13 6:28 ` John Garry
2025-03-13 7:02 ` Christoph Hellwig
2025-03-13 7:41 ` John Garry
2025-03-13 7:49 ` Christoph Hellwig
2025-03-13 7:53 ` John Garry
2025-03-13 8:09 ` Christoph Hellwig
2025-03-13 8:18 ` Christoph Hellwig
2025-03-13 8:24 ` John Garry
2025-03-13 8:28 ` Christoph Hellwig
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