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| Filename | Latest commit message | Latest commit date |
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b277c37f43
Once xfs_defer_finish() has completed all deferred operations, it checks the dirty state of the transaction and rolls it once more to return a clean transaction for the caller. This primarily to cover the case where repeated xfs_defer_finish() calls are made in a loop and we need to make sure that the caller starts the next iteration with a clean transaction. Otherwise we risk transaction reservation overrun. This final transaction roll is not required in the transaction commit path, however, because the transaction is immediately committed and freed after dfops completion. Refactor the final roll into a separate helper such that we can avoid it in the transaction commit path. Lift the dfops reset as well so dfops remains valid until after the last call to xfs_defer_trans_roll(). The reset is also unnecessary in the transaction commit path because the transaction is about to complete. This eliminates unnecessary regrants of transactions where the associated transaction roll can be replaced by a transaction commit. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Bill O'Donnell <billodo@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> |
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| README | ||
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.