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-rw-r--r--mm/shmem.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index ce501bce1c2..f7ac7b812f9 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1028,6 +1028,14 @@ repeat:
page_cache_release(swappage);
goto repeat;
}
+ if (!PageSwapCache(swappage)) {
+ /* Page migration has occured */
+ shmem_swp_unmap(entry);
+ spin_unlock(&info->lock);
+ unlock_page(swappage);
+ page_cache_release(swappage);
+ goto repeat;
+ }
if (PageWriteback(swappage)) {
shmem_swp_unmap(entry);
spin_unlock(&info->lock);