slub: add missed accounting
With per-cpu partial list, slab is added to partial list first and then moved
to node list. The __slab_free() code path for add/remove_partial is almost
deprecated(except for slub debug). But we forget to account add/remove_partial
when move per-cpu partial pages to node list, so the statistics for such events
are always 0. Add corresponding accounting.
This is against the patch "slub: use correct parameter to add a page to
partial list tail"
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
diff --git a/mm/slub.c b/mm/slub.c
index c313823..108ed03f 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1901,11 +1901,14 @@
}
if (l != m) {
- if (l == M_PARTIAL)
+ if (l == M_PARTIAL) {
remove_partial(n, page);
- else
+ stat(s, FREE_REMOVE_PARTIAL);
+ } else {
add_partial(n, page,
DEACTIVATE_TO_TAIL);
+ stat(s, FREE_ADD_PARTIAL);
+ }
l = m;
}