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646ddf0c4d
xfs_reserve_blocks has a very odd interface that can only be explained by it directly deriving from the IRIX fcntl handler back in the day. Split reporting out the reserved blocks out of xfs_reserve_blocks into the only caller that cares. This means that the value reported from XFS_IOC_SET_RESBLKS isn't atomically sampled in the same critical section as when it was set anymore, but as the values could change right after setting them anyway that does not matter. It does provide atomic sampling of both values for XFS_IOC_GET_RESBLKS now, though. Also pass a normal scalar integer value for the requested value instead of the pointless pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Darrick J. Wong" <djwong@kernel.org> Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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.