tree 4895c90613737db7354f43431ed10a55dc0c98f0
parent 982aedfd091e6d9831216f8519f12242091be4fd
author NeilBrown <neilb@suse.de> 1171441992 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1171469393 -0800

[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>