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1. The related resources (spin_lock, list and waitqueue) are needed for address raid1 reorder overlap issue too, in this case, rdev is set to NULL for mddev_create/destroy_serial_pool which implies all rdevs need to handle these resources. And also add "is_suspend" to mddev_destroy_serial_pool since it will be called under suspended situation, which also makes both create and destroy pool have same arguments. 2. Introduce rdevs_init_serial which is called if raid1 io serialization is enabled since all rdevs need to init related stuffs. 3. rdev_init_serial and clear_bit(CollisionCheck, &rdev->flags) should be called between suspend and resume. No need to export mddev_create_serial_pool since it is only called in md-mod module. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.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 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.