Darrick J. Wong
d69769356a
[ Upstream commiteb8409071a] This reverts commit6ff646b2ce. Your maintainer committed a major braino in the rmap code by adding the attr fork, bmbt, and unwritten extent usage bits into rmap record key comparisons. While XFS uses the usage bits *in the rmap records* for cross-referencing metadata in xfs_scrub and xfs_repair, it only needs the owner and offset information to distinguish between reverse mappings of the same physical extent into the data fork of a file at multiple offsets. The other bits are not important for key comparisons for index lookups, and never have been. Eric Sandeen reports that this causes regressions in generic/299, so undo this patch before it does more damage. Reported-by: Eric Sandeen <sandeen@sandeen.net> Fixes:6ff646b2ce("xfs: fix rmap key and record comparison functions") Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.