[PATCH] xattr consolidation v3 - generic xattr API

[PATCH] xattr consolidation v3 - generic xattr API

This patch consolidates common xattr handling logic into the core fs code,
with modifications suggested by Christoph Hellwig (hang off superblock, remove
locking, use generic code as methods), for use by ext2, ext3 and devpts, as
well as upcoming tmpfs xattr code.

Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Stephen Smalley <sds@epoch.ncsc.mil>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>