[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>
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 01bf277..f4649c2 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -458,6 +458,7 @@
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 @@
/* 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 @@
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 @@
/* 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);