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546d402085
Returns 0 if caps were not able to be acquired (yet), 1 if cap acquisition succeeded, or a negative error code. There are 3 special error codes: -EAGAIN: need to sleep but non-blocking is specified -EFBIG: ask caller to call check_max_size() and try again. -ESTALE: ask caller to call ceph_renew_caps() and try again. [ jlayton: add WARN_ON_ONCE check for -EAGAIN ] Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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.