diff options
| author | Joel Becker <joel.becker@oracle.com> | 2008-01-30 15:38:24 -0800 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2008-04-18 08:56:04 -0700 |
| commit | 19fdb624dc8ccb663f6e48b3a3a3fa4e4e567fc1 (patch) | |
| tree | b50e358686ca63789af4af07526e0d21f2806bfb /fs/ocfs2/stackglue.c | |
| parent | 4670c46ded9a18268d1265417ff4ac72145a7917 (diff) | |
ocfs2: Abstract out node number queries.
ocfs2 asks the cluster stack for the local node's node number for two
reasons; to fill the slot map and to print it. While the slot map isn't
necessary for userspace cluster stacks, the printing is very nice for
debugging. Thus we add ocfs2_cluster_this_node() as a generic API to get
this value. It is anticipated that the slot map will not be used under a
userspace cluster stack, so validity checks of the node num only need to
exist in the slot map code. Otherwise, it just gets used and printed as an
opaque value.
[ Fixed up some "int" versus "unsigned int" issues and made osb->node_num
truly opaque. --Mark ]
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/stackglue.c')
| -rw-r--r-- | fs/ocfs2/stackglue.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index f6f309a0834..814686356cc 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -25,6 +25,8 @@ #include <linux/fs.h> #include "cluster/masklog.h" +#include "cluster/nodemanager.h" + #include "stackglue.h" static struct ocfs2_locking_protocol *lproto; @@ -371,6 +373,21 @@ int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn) return 0; } +int ocfs2_cluster_this_node(unsigned int *node) +{ + int node_num; + + node_num = o2nm_this_node(); + if (node_num == O2NM_INVALID_NODE_NUM) + return -ENOENT; + + if (node_num >= O2NM_MAX_NODES) + return -EOVERFLOW; + + *node = node_num; + return 0; +} + void o2cb_get_stack(struct ocfs2_locking_protocol *proto) { BUG_ON(proto == NULL); |