[JFFS2] Switch to using an array of jffs2_raw_node_refs instead of a list.

This allows us to drop another pointer from the struct jffs2_raw_node_ref,
shrinking it to 8 bytes on 32-bit machines (if the TEST_TOTLEN) paranoia
check is turned off, which will be committed soon).

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

1 files changed, 1 insertions, 50 deletions

diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 73a06d01db48..71d1630609a5 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -458,14 +458,13 @@ 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;
         size_t retlen;
         uint32_t freed_len;
 
-        if(!ref) {
+        if(unlikely(!ref)) {
                 printk(KERN_NOTICE "EEEEEK. jffs2_mark_node_obsolete called with NULL node\n");
                 return;
         }
@@ -683,54 +682,6 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
                 spin_unlock(&c->erase_completion_lock);
         }
 
-
-        /* 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 */
-        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 += next_ref->__totlen;
-#endif
-                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(next_ref);
-        }
-
-        /* Also merge with the previous node in the list, if there is one
-           and that one is obsolete */
-        if (ref != jeb->first_node ) {
-                struct jffs2_raw_node_ref *p = jeb->first_node;
-
-                spin_lock(&c->erase_completion_lock);
-
-                while ((next_ref = ref_next(ref)) != ref)
-                        p = next_ref;
-
-                if (ref_obsolete(p) && !ref->next_in_ino) {
-#ifdef TEST_TOTLEN
-                        p->__totlen += ref->__totlen;
-#endif
-                        if (jeb->last_node == ref) {
-                                jeb->last_node = p;
-                        }
-                        if (jeb->gc_node == ref) {
-                                /* gc will be happy continuing gc on this node */
-                                jeb->gc_node=p;
-                        }
-                        p->next_phys = ref_next(ref);
-                        __jffs2_free_raw_node_ref(ref);
-                }
-                spin_unlock(&c->erase_completion_lock);
-        }
  out_erase_sem:
         up(&c->erase_free_sem);
 }