Document that setting vm.dirtytime_expire_seconds to zero disables periodic dirtytime writeback, matching the behavior of the related dirty_writeback_centisecs sysctl which already documents this.
Signed-off-by: Laveesh Bansal laveeshb@laveeshbansal.com Reviewed-by: Jan Kara jack@suse.cz --- Documentation/admin-guide/sysctl/vm.rst | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst index 4d71211fdad8..e2fdbc521033 100644 --- a/Documentation/admin-guide/sysctl/vm.rst +++ b/Documentation/admin-guide/sysctl/vm.rst @@ -231,6 +231,8 @@ eventually gets pushed out to disk. This tunable is used to define when dirty inode is old enough to be eligible for writeback by the kernel flusher threads. And, it is also used as the interval to wakeup dirtytime_writeback thread.
+Setting this to zero disables periodic dirtytime writeback. +
dirty_writeback_centisecs =========================