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b39f35ebe8
Some levels doesn't implement "pers->quiesce", for example raid0_quiesce() is empty, and now that all levels will drop 'active_io' until io is done, wait for 'active_io' to be 0 is enough to make sure all normal io is done, and percpu_ref_kill() for 'active_io' will make sure no new normal io can be dispatched. There is no need to call "pers->quiesce" anymore from mddev_suspend(). Signed-off-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20230628012931.88911-2-yukuai1@huaweicloud.com Signed-off-by: Song Liu <song@kernel.org>
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 Restructured Text 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.