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Post of disabling the SAVING migration file, which includes setting the file state to be MLX5_MIGF_STATE_ERROR, call to wake_up_interruptible() on its poll_wait member. This lets any potential reader which is waiting already for data as part of mlx5vf_save_read() to wake up, recognize the error state and return with an error. Post of that we don't need to rely on any other condition to wake up the reader as of the returning of the SAVE command that was previously executed, etc. In addition, this change will simplify error flows (e.g health recovery) once we'll move to chunk mode and multiple SAVE commands may run in the STOP_COPY phase as we won't need to rely any more on a SAVE command to wake-up a potential waiting reader. Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20230911093856.81910-3-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.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.