mm: rename page trylock

Converting page lock to new locking bitops requires a change of page flag
operation naming, so we might as well convert it to something nicer
(!TestSetPageLocked_Lock => trylock_page, SetPageLocked => set_page_locked).

This also facilitates lockdeping of page lock.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/migrate.c b/mm/migrate.c
index 153572fb60b8..2a80136b23bb 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -605,7 +605,7 @@ static int move_to_new_page(struct page *newpage, struct page *page)
          * establishing additional references. We are the only one
          * holding a reference to the new page at this point.
          */
-        if (TestSetPageLocked(newpage))
+        if (!trylock_page(newpage))
                 BUG();
 
         /* Prepare mapping for the new page.*/
@@ -667,7 +667,7 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
         BUG_ON(charge);
 
         rc = -EAGAIN;
-        if (TestSetPageLocked(page)) {
+        if (!trylock_page(page)) {
                 if (!force)
                         goto move_newpage;
                 lock_page(page);