Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-bdi')
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-bdi b/Documentation/ABI/testing/sysfs-class-bdi
index 5f500977b42..d773d5697cf 100644
@@ -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.
+ If set, the backing device requires that all pages comprising a write
+ request must not be changed until writeout is complete.