8cebc59d6e
[ Upstream commit 134d0b3f2440cdddd12fc3444c9c0f62331ce6fc ] There is an inherent race where a symlink file may have been overriden (by a different client) between lookup and readlink, resulting in a spurious EIO error returned to userspace. Fix this by propagating back ESTALE errors such that the vfs will retry the lookup/get_link (similar to nfs4_file_open) at least once. Cc: Dan Aloni <dan.aloni@vastdata.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.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.