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34389616a9
While reviewing the FIEXCHANGE code in XFS, I realized that the function that enables logged xattrs doesn't actually check that the superblock has a LOG_INCOMPAT feature bit field. Add a check to refuse the operation if we don't have a V5 filesystem... ...but on second though, let's require either reflink or rmap so that we only have to deal with LARP mode on relatively /modern/ kernel. 4.14 is about as far back as I feel like going. Seeing as LARP is a debugging-only option anyway, this isn't likely to affect any real users. Fixes:d9c61ccb3b("xfs: move xfs_attr_use_log_assist out of xfs_log.c") Really-Fixes:f3f36c893f("xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Bill O'Donnell <bodonnel@redhat.com>
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.