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b42cd7b3a2
raid5 is the only personality to suspend array in check_reshape() and start_reshape() callback, suspend and quiesce() callback can both wait for all normal io to be done, and prevent new io to be dispatched, the difference is that suspend is implemented in common layer, and quiesce() callback is implemented in raid5. In order to cleanup all the usage of mddev_suspend(), the new apis __mddev_suspend() need to be called before 'reconfig_mutex' is held, and it's not good to affect all the personalities in common layer just for raid5. Hence replace suspend with quiesce() callaback, prepare to reomove all the users of mddev_suspend(). Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20231010151958.145896-17-yukuai1@huaweicloud.com |
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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 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.