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89e0eb8c13
In commit9669f51de5I tried to get rid of the undocumented cow gc lifetime knob. The knob's function was never documented and it now doesn't really have a function since eof and cow gc have been consolidated. Regrettably, xfs/231 relies on it and regresses on for-next. I did not succeed at getting far enough through fstests patch review for the fixup to land in time. Restore the sysctl knob, document what it did (does?), put it on the deprecation schedule, and rip out a redundant function. Fixes:9669f51de5("xfs: consolidate the eofblocks and cowblocks workers") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
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.