fuse: nfs export special lookups
commit33670fa296860283f04a7975b8c790f101e43a6e
authorMiklos Szeredi <mszeredi@suse.cz>
Fri, 25 Jul 2008 08:49:02 +0000 (25 01:49 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 25 Jul 2008 17:53:48 +0000 (25 10:53 -0700)
tree61162737edbffe696f4f9b13998d192cd3be3f75
parentc180eebe1390c2076ead6a9bc95a02efb994edb7
fuse: nfs export special lookups

Implement the get_parent export operation by sending a LOOKUP request with
".." as the name.

Implement looking up an inode by node ID after it has been evicted from
the cache.  This is done by seding a LOOKUP request with "." as the name
(for all file types, not just directories).

The filesystem can set the FUSE_EXPORT_SUPPORT flag in the INIT reply, to
indicate that it supports these special lookups.

Thanks to John Muir for the original implementation of this feature.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: David Teigland <teigland@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/fuse/fuse_i.h
fs/fuse/inode.c
include/linux/fuse.h