When mapping_locked is true, TTU_RMAP_LOCKED is always set to ttu. We can
check ttu instead so mapping_locked can be removed. And ttu is either 0
or TTU_RMAP_LOCKED now. Change '|=' to '=' to reflect this.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/migrate.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index 42e3a944f35c..50bc62d85eaf 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1230,7 +1230,6 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
goto put_anon;
if (page_mapped(hpage)) {
- bool mapping_locked = false;
enum ttu_flags ttu = 0;
if (!PageAnon(hpage)) {
@@ -1244,14 +1243,13 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
if (unlikely(!mapping))
goto unlock_put_anon;
- mapping_locked = true;
- ttu |= TTU_RMAP_LOCKED;
+ ttu = TTU_RMAP_LOCKED;
}
try_to_migrate(src, ttu);
page_was_mapped = 1;
- if (mapping_locked)
+ if (ttu & TTU_RMAP_LOCKED)
i_mmap_unlock_write(mapping);
}
--
2.23.0
