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Commit 632b2ef0 authored by Liu Xiang's avatar Liu Xiang Committed by Linus Torvalds
Browse files

mm/slub.c: update the comment about slab frozen 

Now frozen slab can only be on the per cpu partial list.

Link: http://lkml.kernel.org/r/1554022325-11305-1-git-send-email-liu.xiang6@zte.com.cn


Signed-off-by: default avatarLiu Xiang <liu.xiang6@zte.com.cn>
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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 517f9f1e

mm/slub.c

+5 −4
Original line number Diff line number Diff line
@@ -58,10 +58,11 @@ 
 *	D. page->frozen		-> frozen state

 *

 *   If a slab is frozen then it is exempt from list management. It is not

 *   on any list. The processor that froze the slab is the one who can

 *   perform list operations on the page. Other processors may put objects

 *   onto the freelist but the processor that froze the slab is the only

 *   one that can retrieve the objects from the page's freelist.

 *   on any list except per cpu partial list. The processor that froze the

 *   slab is the one who can perform list operations on the page. Other

 *   processors may put objects onto the freelist but the processor that

 *   froze the slab is the only one that can retrieve the objects from the

 *   page's freelist.

 *

 *   The list_lock protects the partial and full list on each node and

 *   the partial slab counter. If taken then no new slabs may be added or