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This adds get_parent function so that nfs client can still work after cache drop (Tested on NFS v4 with echo 3 > /proc/sys/vm/drop_caches) [weiyongjun1@huawei.com: fix return value check in affs_get_parent()] Link: http://lkml.kernel.org/r/20170123141018.2331-1-weiyj.lk@gmail.com Link: http://lkml.kernel.org/r/20170109191208.6085-8-fabf@skynet.be Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Suggested-by: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.