[ Upstream commit 554c577cee95bdc1d03d9f457e57dc96eb791845 ] Currently, instead of performing a short write, iomap_file_buffered_write will fail when part of its iov iterator cannot be read. In contrast, gfs2_file_buffered_write will loop around if it can read part of the iov iterator, so we can end up in an endless loop. This should be fixed in iomap_file_buffered_write (and also generic_perform_write), but this comes a bit late in the 5.16 development cycle, so work around it in the filesystem by trimming the iov iterator to the known-good size for now. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Sasha Levin <sashal@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.
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