slub: fix kmem_cache_shrink return value
It is supposed to return 0 if the cache has no remaining objects and 1 otherwise, while currently it always returns 0. Fix it. Signed-off-by: NVladimir Davydov <vdavydov@parallels.com> Acked-by: NChristoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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