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ad3e369318
Re-implement writing of a log vector that does not fit into the current iclog. The iclog will already be in XLOG_STATE_WANT_SYNC because xlog_get_iclog_space() will have reserved all the remaining iclog space for us, hence we can simply iterate over the iovecs in the log vector getting more iclog space until the entire log vector is written. Handling this partial write case separately means we do need to pass unnecessary state around for the common, fast path case when the log vector fits entirely within the current iclog. It isolates the complexity and allows us to modify and improve the partial write case without impacting the simple fast path. This change includes several improvements incorporated from patches written by Christoph Hellwig. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Signed-off-by: Dave Chinner <david@fromorbit.com> |
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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.