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[DLM] dumping master locks

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Add a new debugfs file that dumps a compact list of mastered locks.
This will be used by a userland daemon to collect state for deadlock
detection.

Also, for the existing function that prints all lock state, lock the rsb
before going through the lock lists since they can be changing in the
course of normal dlm activity.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
David Teigland
2007-05-29 08:47:04 -05:00
committed by Steven Whitehouse
parent 8b4021fa43
commit 9dd592d70b
2 changed files with 163 additions and 2 deletions
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fs/dlm/dlm_internal.h
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@@ -470,6 +470,7 @@ struct dlm_ls {
struct dentry *ls_debug_rsb_dentry; /* debugfs */
struct dentry *ls_debug_waiters_dentry; /* debugfs */
struct dentry *ls_debug_master_dentry; /* debugfs */
wait_queue_head_t ls_uevent_wait; /* user part of join/leave */
int ls_uevent_result;