[PATCH] knfsd: add some new fsid types
authorNeilBrown <neilb@suse.de>
Wed, 14 Feb 2007 08:33:12 +0000 (00:33 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 14 Feb 2007 16:09:53 +0000 (08:09 -0800)
commitaf6a4e280e3ff453653f39190b57b345ff0bec16
tree4895c90613737db7354f43431ed10a55dc0c98f0
parent982aedfd091e6d9831216f8519f12242091be4fd
[PATCH] knfsd: add some new fsid types

Add support for using a filesystem UUID to identify and export point in the
filehandle.

For NFSv2, this UUID is xor-ed down to 4 or 8 bytes so that it doesn't take up
too much room.  For NFSv3+, we use the full 16 bytes, and possibly also a
64bit inode number for exports beneath the root of a filesystem.

When generating an fsid to return in 'stat' information, use the UUID (hashed
down to size) if it is available and a small 'fsid' was not specifically
provided.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/nfsd/export.c
fs/nfsd/nfs3xdr.c
fs/nfsd/nfs4xdr.c
fs/nfsd/nfsfh.c
fs/nfsd/nfsxdr.c
include/linux/nfsd/export.h
include/linux/nfsd/nfsd.h
include/linux/nfsd/nfsfh.h