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With commit6ce220dd2f("raid5: don't set STRIPE_HANDLE to stripe which is in batch list"), we don't want to set STRIPE_HANDLE flag for sh which is already in batch list. However, the stripe which is the head of batch list should set this flag, otherwise panic could happen inside init_stripe at BUG_ON(sh->batch_head), it is reproducible with raid5 on top of nvdimm devices per Xiao oberserved. Thanks for Xiao's effort to verify the change. Fixes:6ce220dd2f("raid5: don't set STRIPE_HANDLE to stripe which is in batch list") Reported-by: Xiao Ni <xni@redhat.com> Tested-by: Xiao Ni <xni@redhat.com> 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.