In case __cmpxchg_double_slab() fails and (l != m), current code records
transition states of slub action.
This patch update slub action after __cmpxchg_double_slab() succeed to
record the final state.
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
---
mm/slub.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 44dd1d6cfbc3..cbb1aade7858 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2136,24 +2136,14 @@ static void deactivate_slab(struct kmem_cache *s, struct page *page,
if (l != m) {
if (l == M_PARTIAL)
-
remove_partial(n, page);
-
else if (l == M_FULL)
-
remove_full(s, n, page);
- if (m == M_PARTIAL) {
-
+ if (m == M_PARTIAL)
add_partial(n, page, tail);
- stat(s, tail);
-
- } else if (m == M_FULL) {
-
- stat(s, DEACTIVATE_FULL);
+ else if (m == M_FULL)
add_full(s, n, page);
-
- }
}
l = m;
@@ -2166,7 +2156,11 @@ static void deactivate_slab(struct kmem_cache *s, struct page *page,
if (lock)
spin_unlock(&n->list_lock);
- if (m == M_FREE) {
+ if (m == M_PARTIAL)
+ stat(s, tail);
+ else if (m == M_FULL)
+ stat(s, DEACTIVATE_FULL);
+ else if (m == M_FREE) {
stat(s, DEACTIVATE_EMPTY);
discard_slab(s, page);
stat(s, FREE_SLAB);
--
2.15.1
