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-rw-r--r--mm/swapfile.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index e47a21e64764..cb08fa65819f 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -3169,6 +3169,9 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
if (bdi_cap_stable_pages_required(inode_to_bdi(inode)))
p->flags |= SWP_STABLE_WRITES;
+ if (bdi_cap_synchronous_io(inode_to_bdi(inode)))
+ p->flags |= SWP_SYNCHRONOUS_IO;
+
if (p->bdev && blk_queue_nonrot(bdev_get_queue(p->bdev))) {
int cpu;
unsigned long ci, nr_cluster;