1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index a9b80fc7f0f3..4cd267fe87ec 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -180,6 +180,7 @@ enum
         VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
         VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
         VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
+        VM_DROP_PAGECACHE=29,   /* int: nuke lots of pagecache */
 };