1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-bdi b/Documentation/ABI/testing/sysfs-class-bdi
index 5f500977b42f..d773d5697cf5 100644
--- a/Documentation/ABI/testing/sysfs-class-bdi
+++ b/Documentation/ABI/testing/sysfs-class-bdi
@@ -48,3 +48,8 @@ max_ratio (read-write)
         most of the write-back cache.  For example in case of an NFS
         mount that is prone to get stuck, or a FUSE mount which cannot
         be trusted to play fair.
+
+stable_pages_required (read-only)
+
+        If set, the backing device requires that all pages comprising a write
+        request must not be changed until writeout is complete.