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[ Upstream commit f7a4874d977bf4202ad575031222e78809a36292 ] If unshare encounters a delalloc reservation in the srcmap, that means that the file range isn't shared because delalloc reservations cannot be reflinked. Therefore, don't try to unshare them. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20241002150040.GB21853@frogsfrogsfrogs Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Christian Brauner <brauner@kernel.org> Stable-dep-of: 50793801fc7f ("fsdax: dax_unshare_iter needs to copy entire blocks") 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.