Merge tag 'dlm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:

 - Allow blocking posix lock requests to be interrupted while waiting.
   This requires a cancel request to be sent to the userspace daemon
   where posix lock requests are processed across the cluster.

 - Fix a posix lock patch from the previous cycle in which lock requests
   from different file systems could be mixed up.

 - Fix some long standing problems with nfs posix lock cancelation.

 - Add a new debugfs file for printing queued callbacks.

 - Stop modifying buffers that have been used to receive a message.

 - Misc cleanups and some refactoring.

* tag 'dlm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: fix plock lookup when using multiple lockspaces
  fs: dlm: don't use RCOM_NAMES for version detection
  fs: dlm: create midcomms nodes when configure
  fs: dlm: constify receive buffer
  fs: dlm: drop rxbuf manipulation in dlm_recover_master_copy
  fs: dlm: drop rxbuf manipulation in dlm_copy_master_names
  fs: dlm: get recovery sequence number as parameter
  fs: dlm: cleanup lock order
  fs: dlm: remove clear_members_cb
  fs: dlm: add plock dev tracepoints
  fs: dlm: check on plock ops when exit dlm
  fs: dlm: debugfs for queued callbacks
  fs: dlm: remove unused processed_nodes
  fs: dlm: add missing spin_unlock
  fs: dlm: fix F_CANCELLK to cancel pending request
  fs: dlm: allow to F_SETLKW getting interrupted
  fs: dlm: remove twice newline

3 files changed, 54 insertions, 0 deletions

diff --git a/include/linux/dlm_plock.h b/include/linux/dlm_plock.h
index e6d76e8715a6..15fc856d198c 100644
--- a/include/linux/dlm_plock.h
+++ b/include/linux/dlm_plock.h
@@ -11,6 +11,8 @@ int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
 		int cmd, struct file_lock *fl);
 int dlm_posix_unlock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
 		struct file_lock *fl);
+int dlm_posix_cancel(dlm_lockspace_t *lockspace, u64 number, struct file *file,
+		     struct file_lock *fl);
 int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file,
 		struct file_lock *fl);
 #endif
diff --git a/include/trace/events/dlm.h b/include/trace/events/dlm.h
index 2b09574e1243..c1a146f9fc91 100644
--- a/include/trace/events/dlm.h
+++ b/include/trace/events/dlm.h
@@ -7,6 +7,7 @@
 
 #include <linux/dlm.h>
 #include <linux/dlmconstants.h>
+#include <uapi/linux/dlm_plock.h>
 #include <linux/tracepoint.h>
 
 #include "../../../fs/dlm/dlm_internal.h"
@@ -585,6 +586,56 @@ TRACE_EVENT(dlm_recv_message,
 
 );
 
+DECLARE_EVENT_CLASS(dlm_plock_template,
+
+	TP_PROTO(const struct dlm_plock_info *info),
+
+	TP_ARGS(info),
+
+	TP_STRUCT__entry(
+		__field(uint8_t, optype)
+		__field(uint8_t, ex)
+		__field(uint8_t, wait)
+		__field(uint8_t, flags)
+		__field(uint32_t, pid)
+		__field(int32_t, nodeid)
+		__field(int32_t, rv)
+		__field(uint32_t, fsid)
+		__field(uint64_t, number)
+		__field(uint64_t, start)
+		__field(uint64_t, end)
+		__field(uint64_t, owner)
+	),
+
+	TP_fast_assign(
+		__entry->optype = info->optype;
+		__entry->ex = info->ex;
+		__entry->wait = info->wait;
+		__entry->flags = info->flags;
+		__entry->pid = info->pid;
+		__entry->nodeid = info->nodeid;
+		__entry->rv = info->rv;
+		__entry->fsid = info->fsid;
+		__entry->number = info->number;
+		__entry->start = info->start;
+		__entry->end = info->end;
+		__entry->owner = info->owner;
+	),
+
+	TP_printk("fsid=%u number=%llx owner=%llx optype=%d ex=%d wait=%d flags=%x pid=%u nodeid=%d rv=%d start=%llx end=%llx",
+		  __entry->fsid, __entry->number, __entry->owner,
+		  __entry->optype, __entry->ex, __entry->wait,
+		  __entry->flags, __entry->pid, __entry->nodeid,
+		  __entry->rv, __entry->start, __entry->end)
+
+);
+
+DEFINE_EVENT(dlm_plock_template, dlm_plock_read,
+	     TP_PROTO(const struct dlm_plock_info *info), TP_ARGS(info));
+
+DEFINE_EVENT(dlm_plock_template, dlm_plock_write,
+	     TP_PROTO(const struct dlm_plock_info *info), TP_ARGS(info));
+
 TRACE_EVENT(dlm_send,
 
 	TP_PROTO(int nodeid, int ret),
diff --git a/include/uapi/linux/dlm_plock.h b/include/uapi/linux/dlm_plock.h
index 63b6c1fd9169..eb66afcac40e 100644
--- a/include/uapi/linux/dlm_plock.h
+++ b/include/uapi/linux/dlm_plock.h
@@ -22,6 +22,7 @@ enum {
 	DLM_PLOCK_OP_LOCK = 1,
 	DLM_PLOCK_OP_UNLOCK,
 	DLM_PLOCK_OP_GET,
+	DLM_PLOCK_OP_CANCEL,
 };
 
 #define DLM_PLOCK_FL_CLOSE 1