tree 8838edf8e3d4068c41816d7b17c63849318ceb93
parent fac533c2505b39faf30492cd3f0844c0da51c75c
author Sven Schnelle <svens@stackframe.org> 1206738955 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1206740721 -0700

afs: prevent double cell registration

kafs doesn't check if the cell already exists - so if you do an echo "add
newcell.org 1.2.3.4" >/proc/fs/afs/cells it will try to create this cell
again.  kobject will also complain about a double registration.  To prevent
such problems, return -EEXIST in that case.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>