[Cluster-devel] [PATCH v5.19-rc1 6/7] fs: dlm: change -EINVAL recovery error to -EAGAIN

[Alexander Aring]

This patch changes a -EINVAL error for dlm_master_lookup() to -EAGAIN.
It is a critical error which should not happened, if it happens there
exists an issue. However we still track those issues inside the lock but
if they happen we try to run recovery again if those issues will get
resolved. If not recovery has a logic to fail this node after several
retries.

Signed-off-by: Alexander Aring <aahringo at redhat.com>
---
 fs/dlm/lock.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 226822f49d30..ad32a883c1fd 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1018,7 +1018,10 @@ int dlm_master_lookup(struct dlm_ls *ls, int from_nodeid, char *name, int len,
 			  from_nodeid, dir_nodeid, our_nodeid, hash,
 			  ls->ls_num_nodes);
 		*r_nodeid = -1;
-		return -EINVAL;
+		/* this case should never occur, we try again
+		 * to hope it got resolved
+		 */
+		return -EAGAIN;
 	}
 
  retry:
-- 
2.31.1