The patch titled
Subject: mm/hugetlb.c: just use put_page_testzero() instead of page_count()
has been removed from the -mm tree. Its filename was
mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Hui Su <sh_def@xxxxxxx>
Subject: mm/hugetlb.c: just use put_page_testzero() instead of page_count()
We test the page reference count is zero or not here, it can be a bug here
if page refercence count is not zero. So we can just use
put_page_testzero() instead of page_count().
Link: https://lkml.kernel.org/r/20201007170949.GA6416@rlk
Signed-off-by: Hui Su <sh_def@xxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/hugetlb.c~mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count
+++ a/mm/hugetlb.c
@@ -2014,8 +2014,7 @@ retry:
* This page is now managed by the hugetlb allocator and has
* no users -- drop the buddy allocator's reference.
*/
- put_page_testzero(page);
- VM_BUG_ON_PAGE(page_count(page), page);
+ VM_BUG_ON_PAGE(!put_page_testzero(page), page);
enqueue_huge_page(h, page);
}
free:
_
Patches currently in -mm which might be from sh_def@xxxxxxx are
fs-proc-make-pde_get-return-nothing.patch
acctc-use-elif-instead-of-end-and-elif.patch
mm-memcontrol-rewrite-mem_cgroup_page_lruvec.patch
