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From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, avi@scylladb.com
Subject: reduce sub-block DIO serialisation v4
Date: Fri, 22 Jan 2021 17:20:32 +0100
Message-ID: <20210122162043.616755-1-hch@lst.de> (raw)

This takes the approach from Dave, but adds a new flag instead of abusing
the nowait one, and keeps a simpler calling convention for iomap_dio_rw.

Changes since v3:
 - further comment improvements
 - micro-optimize an alignment check

Changes since v2:
 - add another sanity check in __iomap_dio_rw
 - rename IOMAP_DIO_UNALIGNED to IOMAP_DIO_OVERWRITE_ONLY
 - use more consistent parameter naming
 - improve a few comments
 - cleanup an if statement

Changes since v1:
 - rename the new flags
 - add an EOF check for subblock I/O
 - minor cleanups

             reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-22 16:20 Christoph Hellwig [this message]
2021-01-22 16:20 ` [PATCH 01/11] xfs: factor out a xfs_ilock_iocb helper Christoph Hellwig
2021-01-22 16:20 ` [PATCH 02/11] xfs: make xfs_file_aio_write_checks IOCB_NOWAIT-aware Christoph Hellwig
2021-01-22 16:20 ` [PATCH 03/11] xfs: cleanup the read/write helper naming Christoph Hellwig
2021-01-22 16:20 ` [PATCH 04/11] xfs: remove the buffered I/O fallback assert Christoph Hellwig
2021-01-22 16:20 ` [PATCH 05/11] xfs: simplify the read/write tracepoints Christoph Hellwig
2021-01-22 16:20 ` [PATCH 06/11] xfs: improve the reflink_bounce_dio_write tracepoint Christoph Hellwig
2021-01-22 16:20 ` [PATCH 07/11] xfs: split the unaligned DIO write code out Christoph Hellwig
2021-01-22 16:20 ` [PATCH 08/11] iomap: rename the flags variable in __iomap_dio_rw Christoph Hellwig
2021-01-22 16:20 ` [PATCH 09/11] iomap: pass a flags argument to iomap_dio_rw Christoph Hellwig
2021-01-22 16:20 ` [PATCH 10/11] iomap: add a IOMAP_DIO_OVERWRITE_ONLY flag Christoph Hellwig
2021-01-22 16:20 ` [PATCH 11/11] xfs: reduce exclusive locking on unaligned dio Christoph Hellwig
2021-01-22 17:24   ` Darrick J. Wong
2021-01-23 18:57 ` reduce sub-block DIO serialisation v4 Darrick J. Wong
2021-02-01 16:58   ` Christoph Hellwig
2021-02-01 17:51     ` Darrick J. Wong

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