5 files changed, 18 insertions, 8 deletions
diff --git a/fs/gfs2/locking/dlm/lock.c b/fs/gfs2/locking/dlm/lock.c
index 542a797ac89a..cf7ea8abec87 100644
--- a/fs/gfs2/locking/dlm/lock.c
+++ b/fs/gfs2/locking/dlm/lock.c
@@ -137,7 +137,8 @@ static inline unsigned int make_flags(struct gdlm_lock *lp,
 
 		/* Conversion deadlock avoidance by DLM */
 
-		if (!test_bit(LFL_FORCE_PROMOTE, &lp->flags) &&
+		if (!(lp->ls->fsflags & LM_MFLAG_CONV_NODROP) &&
+		    !test_bit(LFL_FORCE_PROMOTE, &lp->flags) &&
 		    !(lkf & DLM_LKF_NOQUEUE) &&
 		    cur > DLM_LOCK_NL && req > DLM_LOCK_NL && cur != req)
 			lkf |= DLM_LKF_CONVDEADLK;
@@ -164,7 +165,7 @@ static int gdlm_create_lp(struct gdlm_ls *ls, struct lm_lockname *name,
 {
 	struct gdlm_lock *lp;
 
-	lp = kzalloc(sizeof(struct gdlm_lock), GFP_KERNEL);
+	lp = kzalloc(sizeof(struct gdlm_lock), GFP_NOFS);
 	if (!lp)
 		return -ENOMEM;
 
@@ -382,7 +383,7 @@ static int gdlm_add_lvb(struct gdlm_lock *lp)
 {
 	char *lvb;
 
-	lvb = kzalloc(GDLM_LVB_SIZE, GFP_KERNEL);
+	lvb = kzalloc(GDLM_LVB_SIZE, GFP_NOFS);
 	if (!lvb)
 		return -ENOMEM;
 
diff --git a/fs/gfs2/locking/dlm/lock_dlm.h b/fs/gfs2/locking/dlm/lock_dlm.h
index 9e8265d28377..58fcf8c5bf39 100644
--- a/fs/gfs2/locking/dlm/lock_dlm.h
+++ b/fs/gfs2/locking/dlm/lock_dlm.h
@@ -183,5 +183,10 @@ int gdlm_plock_get(void *, struct lm_lockname *, struct file *,
 		struct file_lock *);
 int gdlm_punlock(void *, struct lm_lockname *, struct file *,
 		struct file_lock *);
+
+/* mount.c */
+
+extern const struct lm_lockops gdlm_ops;
+
 #endif
 
diff --git a/fs/gfs2/locking/dlm/main.c b/fs/gfs2/locking/dlm/main.c
index a0e7eda643ed..36a225850bd8 100644
--- a/fs/gfs2/locking/dlm/main.c
+++ b/fs/gfs2/locking/dlm/main.c
@@ -11,8 +11,6 @@
 
 #include "lock_dlm.h"
 
-extern struct lm_lockops gdlm_ops;
-
 static int __init init_lock_dlm(void)
 {
 	int error;
diff --git a/fs/gfs2/locking/dlm/sysfs.c b/fs/gfs2/locking/dlm/sysfs.c
index a87b09839761..8479da47049c 100644
--- a/fs/gfs2/locking/dlm/sysfs.c
+++ b/fs/gfs2/locking/dlm/sysfs.c
@@ -12,8 +12,6 @@
 
 #include "lock_dlm.h"
 
-extern struct lm_lockops gdlm_ops;
-
 static ssize_t proto_name_show(struct gdlm_ls *ls, char *buf)
 {
 	return sprintf(buf, "%s\n", gdlm_ops.lm_proto_name);
diff --git a/fs/gfs2/locking/dlm/thread.c b/fs/gfs2/locking/dlm/thread.c
index 521694fc19d6..e53db6fd28ab 100644
--- a/fs/gfs2/locking/dlm/thread.c
+++ b/fs/gfs2/locking/dlm/thread.c
@@ -135,7 +135,15 @@ static void process_complete(struct gdlm_lock *lp)
 			 lp->lksb.sb_status, lp->lockname.ln_type,
 			 (unsigned long long)lp->lockname.ln_number,
 			 lp->flags);
-		return;
+		if (lp->lksb.sb_status == -EDEADLOCK &&
+		    lp->ls->fsflags & LM_MFLAG_CONV_NODROP) {
+			lp->req = lp->cur;
+			acb.lc_ret |= LM_OUT_CONV_DEADLK;
+			if (lp->cur == DLM_LOCK_IV)
+				lp->lksb.sb_lkid = 0;
+			goto out;
+		} else
+			return;
 	}
 
 	/*