mm/mlock: remove __munlock_isolate_lru_page()

__munlock_isolate_lru_page() only has one caller, remove it to clean up
and simplify code.

Link: https://lkml.kernel.org/r/1604566549-62481-14-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/mlock.c b/mm/mlock.c
index 796c726..d487aa8 100644 (file)
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -105,26 +105,6 @@ void mlock_vma_page(struct page *page)
        }
 }
 
-/*
- * Isolate a page from LRU with optional get_page() pin.
- * Assumes lru_lock already held and page already pinned.
- */
-static bool __munlock_isolate_lru_page(struct page *page, bool getpage)
-{
-       if (PageLRU(page)) {
-               struct lruvec *lruvec;
-
-               lruvec = mem_cgroup_page_lruvec(page, page_pgdat(page));
-               if (getpage)
-                       get_page(page);
-               ClearPageLRU(page);
-               del_page_from_lru_list(page, lruvec, page_lru(page));
-               return true;
-       }
-
-       return false;
-}
-
 /*
  * Finish munlock after successful page isolation
  *
@@ -296,9 +276,16 @@ static void __munlock_pagevec(struct pagevec *pvec, struct zone *zone)
                         * We already have pin from follow_page_mask()
                         * so we can spare the get_page() here.
                         */
-                       if (__munlock_isolate_lru_page(page, false))
+                       if (PageLRU(page)) {
+                               struct lruvec *lruvec;
+
+                               ClearPageLRU(page);
+                               lruvec = mem_cgroup_page_lruvec(page,
+                                                       page_pgdat(page));
+                               del_page_from_lru_list(page, lruvec,
+                                                       page_lru(page));
                                continue;
-                       else
+                       } else
                                __munlock_isolation_failed(page);
                } else {
                        delta_munlocked++;