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A zloop zoned block device declares to the block layer that it supports zone append operations. That is, a zloop device ressembles an NVMe ZNS devices supporting zone append. This native support is fine but it does not allow exercising the block layer zone write plugging emulation of zone append, as is done with SCSI or ATA SMR HDDs. Introduce the zone_append configuration parameter to allow creating a zloop device without native support for zone append, thus relying on the block layer zone append emulation. If not specified, zone append support is enabled by default. Otherwise, a value of 0 disables native zone append and a value of 1 enables it. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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.