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aad7272a92
The iclog callback processing done during a forced log shutdown has different logic to normal runtime IO completion callback processing. Separate out the shutdown callbacks into their own function and call that from the shutdown code instead. We don't need this shutdown specific logic in the normal runtime completion code - we'll always run the shutdown version on shutdown, and it will do what shutdown needs regardless of whether there are racing IO completion callbacks scheduled or in progress. Hence we can also simplify the normal IO completion callpath and only abort if shutdown occurred while we actively were processing callbacks. Further, separating out the IO completion logic from the shutdown logic avoids callback race conditions from being triggered by log IO completion after a shutdown. IO completion will now only run callbacks on iclogs that are in the correct state for a callback to be run, avoiding the possibility of running callbacks on a referenced iclog that hasn't yet been submitted for IO. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> |
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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.