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commit7009fa9cd9upstream. When starting an iomap write, gfs2_quota_lock_check -> gfs2_quota_lock -> gfs2_quota_hold is called from gfs2_iomap_begin. At the end of the write, before unlocking the quotas, punch_hole -> gfs2_quota_hold can be called again in gfs2_iomap_end, which is incorrect and leads to a failed assertion. Instead, move the call to gfs2_quota_unlock before the call to punch_hole to fix that. Fixes:64bc06bb32("gfs2: iomap buffered write support") Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Andreas Gruenbacher <agruenba@redhat.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.