mm, swap: introduce SWP_SYNCHRONOUS_IO

[sfrench/cifs-2.6.git] / include / linux / swap.h

diff --git a/include/linux/swap.h b/include/linux/swap.h
index f02fb5db8914bf0731c03ae80e444156ec83a3cb..933d7c0c35421687179d21b6e810c750c9b89117 100644 (file)
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -171,8 +171,9 @@ enum {
        SWP_AREA_DISCARD = (1 << 8),    /* single-time swap area discards */
        SWP_PAGE_DISCARD = (1 << 9),    /* freed swap page-cluster discards */
        SWP_STABLE_WRITES = (1 << 10),  /* no overwrite PG_writeback pages */
+       SWP_SYNCHRONOUS_IO = (1 << 11), /* synchronous IO is efficient */
                                        /* add others here before... */
-       SWP_SCANNING    = (1 << 11),    /* refcount in scan_swap_map */
+       SWP_SCANNING    = (1 << 12),    /* refcount in scan_swap_map */
 };
 
 #define SWAP_CLUSTER_MAX 32UL