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ocfs2_dlm: fix cluster-wide refcounting of lock resources

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This was previously broken and migration of some locks had to be temporarily
disabled. We use a new (and backward-incompatible) set of network messages
to account for all references to a lock resources held across the cluster.
once these are all freed, the master node may then free the lock resource
memory once its local references are dropped.

Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Kurt Hackel
2006-12-01 14:47:20 -08:00
committed by Mark Fasheh
parent 5331be0905
commit ba2bf21851
8 changed files with 727 additions and 172 deletions
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5
fs/ocfs2/cluster/tcp_internal.h
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@ -38,6 +38,9 @@
* locking semantics of the file system using the protocol. It should
* be somewhere else, I'm sure, but right now it isn't.
*
* New in version 6:
* - DLM lockres remote refcount fixes.
*
* New in version 5:
* - Network timeout checking protocol
*
@ -51,7 +54,7 @@
* - full 64 bit i_size in the metadata lock lvbs
* - introduction of "rw" lock and pushing meta/data locking down
*/
#define O2NET_PROTOCOL_VERSION 5ULL
#define O2NET_PROTOCOL_VERSION 6ULL
struct o2net_handshake {
__be64 protocol_version;
__be64 connector_id;