tree 9579700c6b8b99e873462018cf536c00ab76dfb6
parent 364fbb29a0105863d76a1f7bbc01783a4af30a75
author Eric Dumazet <dada1@cosmosbay.com> 1178488168 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1178565173 -0700

SLAB: don't allocate empty shared caches

We can avoid allocating empty shared caches and avoid unecessary check of
cache->limit.  We save some memory.  We avoid bringing into CPU cache
unecessary cache lines.

All accesses to l3->shared are already checking NULL pointers so this patch is
safe.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>