mm: add_to_swap_cache() does not return -EEXIST

[deliverable/linux.git] / mm / shmem.c

diff --git a/mm/shmem.c b/mm/shmem.c
index bd20f8bb02aa7ac7d7dea5d581075309425d040c..376d8f0a8f6bd37f7ac7fd536dbeba2d2b80ab1e 100644 (file)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1097,6 +1097,10 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
        shmem_swp_unmap(entry);
 unlock:
        spin_unlock(&info->lock);
+       /*
+        * add_to_swap_cache() doesn't return -EEXIST, so we can safely
+        * clear SWAP_HAS_CACHE flag.
+        */
        swapcache_free(swap, NULL);
 redirty:
        set_page_dirty(page);