From mboxrd@z Thu Jan 1 00:00:00 1970 From: Abhijith Das Date: Thu, 13 Sep 2007 23:35:27 -0500 Subject: [Cluster-devel] [PATCH][GFS2] - bz 272021: GFS2 - flocks from same process trip kernel BUG at fs/gfs2/glock.c:1118! Message-ID: <46EA0F8F.8080601@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit This patch adds a new flag to the gfs2_holder structure GL_FLOCK. It is set on holders of glocks representing flocks. This flag is checked in add_to_queue() and a process is permitted to queue more than one holder onto a glock if it is set. This solves the issue of a process not being able to do multiple flocks on the same file. Through a single descriptor, a process can now promote and demote flocks. Through multiple descriptors a process can now queue multiple flocks on the same file. There's still the problem of a process deadlocking itself (because gfs2 blocking locks are not interruptible) by queueing incompatible deadlock. Signed-off-by: Abhijith Das -------------- next part -------------- A non-text attachment was scrubbed... Name: bz272021-git-new.patch Type: text/x-patch Size: 3496 bytes Desc: not available URL: