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commit0e24421ac4upstream. If the max_mds is decreased in a cephfs cluster, there is a window of time before the MDSs are removed. If a map goes out during this period, the mdsmap may show the decreased max_mds but still shows those MDSes as in or in the export target list. Ensure that we don't fail the map decode in that case. Cc: stable@vger.kernel.org URL: https://tracker.ceph.com/issues/52436 Fixes:d517b3983d("ceph: reconnect to the export targets on new mdsmaps") Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.