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All the infrastructure has already been plumbed to support this for stacked devices, so just enable the request_queue limits features flag. A note about chunk sectors for linear arrays: While it is possible to set a chunk sectors param for building a linear array, this is for specifying the granularity at which data sectors from the device are used. It is not the same as a stripe size, like for RAID0. As such, it is not appropriate to set chunk_sectors request queue limit to the same value, as chunk_sectors request limit is a boundary for which requests cannot straddle. However, request_queue limit max_hw_sectors is set to chunk sectors, which almost has the same effect as setting chunk_sectors limit. Link: https://lore.kernel.org/linux-raid/20250903161052.3326176-1-john.g.garry@oracle.com Signed-off-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Yu Kuai <yukuai3@fnnas.com> Signed-off-by: Yu Kuai <yukuai@fnnas.com>
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.