From 2ddfbdd6848d496d8088b28992d257fd02e58c9d Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Wed, 20 Aug 2014 12:44:45 -0400 Subject: [PATCH] GFS2: Request demote when a "try" flock fails This patch changes the flock code so that it uses the TRY_1CB flag instead of the TRY flag on the first attempt. That forces any holding nodes to issue a dlm callback, which requests a demote of the glock. Then, if the "try" failed, it sleeps a small amount of time for the demote to occur. Then it tries again, for an increasing amount of time. Subsequent attempts to gain the "try" lock don't use "_1CB" so that only one callback is issued. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse --- Reading git-format-patch failed