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Johannes Thumshirn f957ddc4d8 btrfs: zoned: don't zone append to conventional zone
[ Upstream commit b39b26e017 ]

In case of a zoned RAID, it can happen that a data write is targeting a
sequential write required zone and a conventional zone. In this case the
bio will be marked as REQ_OP_ZONE_APPEND but for the conventional zone,
this needs to be REQ_OP_WRITE.

The setting of REQ_OP_ZONE_APPEND is deferred to the last possible time in
btrfs_submit_dev_bio(), but the decision if we can use zone append is
cached in btrfs_bio.

CC: Naohiro Aota <naohiro.aota@wdc.com>
Fixes: e9b9b911e0 ("btrfs: add raid stripe tree to features enabled with debug config")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-02-26 14:58:59 -08:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.