ocfs2: remove unused errmsg function and table

dlm_errmsg() has been unused since 2010's commit 0016eed
("ocfs2_dlmfs: Use the stackglue.")

Remove dlm_errmsg() and the message table it indexes.

Link: https://lkml.kernel.org/r/20241022002543.302606-1-linux@treblig.org
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: Dr. David Alan Gilbert

fs/ocfs2/dlm/dlmapi.h

@@ -62,8 +62,6 @@ enum dlm_status {
 	DLM_MAXSTATS,             /* 41: upper limit for return code validation */
 };
 
-/* for pretty-printing dlm_status error messages */
-const char *dlm_errmsg(enum dlm_status err);
 /* for pretty-printing dlm_status error names */
 const char *dlm_errname(enum dlm_status err);
 

fs/ocfs2/dlm/dlmdebug.c

@@ -164,59 +164,6 @@ static const char *dlm_errnames[] = {
 	[DLM_MAXSTATS] =		"DLM_MAXSTATS",
 };
 
-static const char *dlm_errmsgs[] = {
-	[DLM_NORMAL] = 			"request in progress",
-	[DLM_GRANTED] = 		"request granted",
-	[DLM_DENIED] = 			"request denied",
-	[DLM_DENIED_NOLOCKS] = 		"request denied, out of system resources",
-	[DLM_WORKING] = 		"async request in progress",
-	[DLM_BLOCKED] = 		"lock request blocked",
-	[DLM_BLOCKED_ORPHAN] = 		"lock request blocked by a orphan lock",
-	[DLM_DENIED_GRACE_PERIOD] = 	"topological change in progress",
-	[DLM_SYSERR] = 			"system error",
-	[DLM_NOSUPPORT] = 		"unsupported",
-	[DLM_CANCELGRANT] = 		"can't cancel convert: already granted",
-	[DLM_IVLOCKID] = 		"bad lockid",
-	[DLM_SYNC] = 			"synchronous request granted",
-	[DLM_BADTYPE] = 		"bad resource type",
-	[DLM_BADRESOURCE] = 		"bad resource handle",
-	[DLM_MAXHANDLES] = 		"no more resource handles",
-	[DLM_NOCLINFO] = 		"can't contact cluster manager",
-	[DLM_NOLOCKMGR] = 		"can't contact lock manager",
-	[DLM_NOPURGED] = 		"can't contact purge daemon",
-	[DLM_BADARGS] = 		"bad api args",
-	[DLM_VOID] = 			"no status",
-	[DLM_NOTQUEUED] = 		"NOQUEUE was specified and request failed",
-	[DLM_IVBUFLEN] = 		"invalid resource name length",
-	[DLM_CVTUNGRANT] = 		"attempted to convert ungranted lock",
-	[DLM_BADPARAM] = 		"invalid lock mode specified",
-	[DLM_VALNOTVALID] = 		"value block has been invalidated",
-	[DLM_REJECTED] = 		"request rejected, unrecognized client",
-	[DLM_ABORT] = 			"blocked lock request cancelled",
-	[DLM_CANCEL] = 			"conversion request cancelled",
-	[DLM_IVRESHANDLE] = 		"invalid resource handle",
-	[DLM_DEADLOCK] = 		"deadlock recovery refused this request",
-	[DLM_DENIED_NOASTS] = 		"failed to allocate AST",
-	[DLM_FORWARD] = 		"request must wait for primary's response",
-	[DLM_TIMEOUT] = 		"timeout value for lock has expired",
-	[DLM_IVGROUPID] = 		"invalid group specification",
-	[DLM_VERS_CONFLICT] = 		"version conflicts prevent request handling",
-	[DLM_BAD_DEVICE_PATH] = 	"Locks device does not exist or path wrong",
-	[DLM_NO_DEVICE_PERMISSION] = 	"Client has insufficient perms for device",
-	[DLM_NO_CONTROL_DEVICE] = 	"Cannot set options on opened device ",
-	[DLM_RECOVERING] = 		"lock resource being recovered",
-	[DLM_MIGRATING] = 		"lock resource being migrated",
-	[DLM_MAXSTATS] = 		"invalid error number",
-};
-
-const char *dlm_errmsg(enum dlm_status err)
-{
-	if (err >= DLM_MAXSTATS || err < 0)
-		return dlm_errmsgs[DLM_MAXSTATS];
-	return dlm_errmsgs[err];
-}
-EXPORT_SYMBOL_GPL(dlm_errmsg);
-
 const char *dlm_errname(enum dlm_status err)
 {
 	if (err >= DLM_MAXSTATS || err < 0)