[PATCH v2] mm: fix z3fold warnings on CONFIG_SMP=n

[Alex Xu (Hello71)]

Spinlocks are always lockable on UP systems, even if they were just
locked.

Cc: Dan Streetman <ddstr...@ieee.org>
Signed-off-by: Alex Xu (Hello71) <alex_y...@yahoo.ca>
---
 mm/z3fold.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/z3fold.c b/mm/z3fold.c
index 4b366d181..2e8d268ac 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -277,7 +277,7 @@ static void release_z3fold_page_locked(struct kref *ref)
 {
        struct z3fold_header *zhdr = container_of(ref, struct z3fold_header,
                                                refcount);
-       WARN_ON(z3fold_page_trylock(zhdr));
+       WARN_ON_SMP(z3fold_page_trylock(zhdr));
        __release_z3fold_page(zhdr, true);
 }
 
@@ -289,7 +289,7 @@ static void release_z3fold_page_locked_list(struct kref 
*ref)
        list_del_init(&zhdr->buddy);
        spin_unlock(&zhdr->pool->lock);
 
-       WARN_ON(z3fold_page_trylock(zhdr));
+       WARN_ON_SMP(z3fold_page_trylock(zhdr));
        __release_z3fold_page(zhdr, true);
 }
 
@@ -403,7 +403,7 @@ static void do_compact_page(struct z3fold_header *zhdr, 
bool locked)
 
        page = virt_to_page(zhdr);
        if (locked)
-               WARN_ON(z3fold_page_trylock(zhdr));
+               WARN_ON_SMP(z3fold_page_trylock(zhdr));
        else
                z3fold_page_lock(zhdr);
        if (WARN_ON(!test_and_clear_bit(NEEDS_COMPACTING, &page->private))) {
-- 
2.19.0