[JFFS2] Introduce ref_next() macro for finding next physical node

Another part of the preparation for switching to an array...

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 11 insertions, 11 deletions

diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 01bf2773fe4d..f4649c275fbe 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -458,6 +458,7 @@ static inline int on_list(struct list_head *obj, struct list_head *head)
 void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref)
 {
 	struct jffs2_eraseblock *jeb;
+	struct jffs2_raw_node_ref *next_ref;
 	int blocknr;
 	struct jffs2_unknown_node n;
 	int ret, addedsize;
@@ -685,24 +686,23 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 
 	/* Merge with the next node in the physical list, if there is one
 	   and if it's also obsolete and if it doesn't belong to any inode */
-	if (ref->next_phys && ref_obsolete(ref->next_phys) &&
-	    !ref->next_phys->next_in_ino) {
-		struct jffs2_raw_node_ref *n = ref->next_phys;
+	next_ref = ref_next(ref);
 
+	if (next_ref && ref_obsolete(next_ref) && !next_ref->next_in_ino) {
 		spin_lock(&c->erase_completion_lock);
 
 #ifdef TEST_TOTLEN
-		ref->__totlen += n->__totlen;
+		ref->__totlen += next_ref->__totlen;
 #endif
-		ref->next_phys = n->next_phys;
-                if (jeb->last_node == n) jeb->last_node = ref;
-		if (jeb->gc_node == n) {
+		ref->next_phys = ref_next(next_ref);
+                if (jeb->last_node == next_ref) jeb->last_node = ref;
+		if (jeb->gc_node == next_ref) {
 			/* gc will be happy continuing gc on this node */
 			jeb->gc_node=ref;
 		}
 		spin_unlock(&c->erase_completion_lock);
 
-		__jffs2_free_raw_node_ref(n);
+		__jffs2_free_raw_node_ref(next_ref);
 	}
 
 	/* Also merge with the previous node in the list, if there is one
@@ -712,8 +712,8 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 
 		spin_lock(&c->erase_completion_lock);
 
-		while (p->next_phys != ref)
-			p = p->next_phys;
+		while ((next_ref = ref_next(ref)) != ref)
+			p = next_ref;
 
 		if (ref_obsolete(p) && !ref->next_in_ino) {
 #ifdef TEST_TOTLEN
@@ -726,7 +726,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 				/* gc will be happy continuing gc on this node */
 				jeb->gc_node=p;
 			}
-			p->next_phys = ref->next_phys;
+			p->next_phys = ref_next(ref);
 			__jffs2_free_raw_node_ref(ref);
 		}
 		spin_unlock(&c->erase_completion_lock);