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authorWei Yang <richard.weiyang@gmail.com>2018-12-28 09:33:13 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2018-12-28 21:11:46 +0100
commit88349a2837fbaef83862a011e1f53c4551d3e199 (patch)
treeca3794d49f7c84ca93d9abff6986a7d7fb2ffd88 /mm/slub.c
parentmm/slub.c: page is always non-NULL in node_match() (diff)
downloadlinux-88349a2837fbaef83862a011e1f53c4551d3e199.tar.xz
linux-88349a2837fbaef83862a011e1f53c4551d3e199.zip
mm/slub.c: record final state of slub action in deactivate_slab()
If __cmpxchg_double_slab() fails and (l != m), current code records transition states of slub action. Update the action after __cmpxchg_double_slab() success to record the final state. [akpm@linux-foundation.org: more whitespace cleanup] Link: http://lkml.kernel.org/r/20181107013119.3816-1-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 011e53e5845b..36c0befeebd8 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2131,26 +2131,15 @@ redo:
}
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;
@@ -2163,7 +2152,11 @@ redo:
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);