[JFFS2] Deletion dirents should be REF_NORMAL, not REF_PRISTINE.

Otherwise they'll never actually get garbage-collected.
Noted by Jonathan Larmour.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

fs/jffs2/nodelist.h

@@ -139,6 +139,11 @@ static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_nod
 #define ref_obsolete(ref)	(((ref)->flash_offset & 3) == REF_OBSOLETE)
 #define mark_ref_normal(ref)    do { (ref)->flash_offset = ref_offset(ref) | REF_NORMAL; } while(0)
 
+/* Dirent nodes should be REF_PRISTINE only if they are not a deletion
+   dirent. Deletion dirents should be REF_NORMAL so that GC gets to
+   throw them away when appropriate */
+#define dirent_node_state(rd)	( (je32_to_cpu((rd)->ino)?REF_PRISTINE:REF_NORMAL) )
+
 /* NB: REF_PRISTINE for an inode-less node (ref->next_in_ino == NULL) indicates
    it is an unknown node of type JFFS2_NODETYPE_RWCOMPAT_COPY, so it'll get
    copied. If you need to do anything different to GC inode-less nodes, then

fs/jffs2/readinode.c

@@ -613,7 +613,7 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 		jeb->unchecked_size -= len;
 		c->used_size += len;
 		c->unchecked_size -= len;
-		ref->flash_offset = ref_offset(ref) | REF_PRISTINE;
+		ref->flash_offset = ref_offset(ref) | dirent_node_state(rd);
 		spin_unlock(&c->erase_completion_lock);
 	}
 

fs/jffs2/scan.c

@@ -1049,7 +1049,8 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
 		return -ENOMEM;
 	}
 
-	fd->raw = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rd->totlen)), ic);
+	fd->raw = jffs2_link_node_ref(c, jeb, ofs | dirent_node_state(rd),
+				      PAD(je32_to_cpu(rd->totlen)), ic);
 
 	fd->next = NULL;
 	fd->version = je32_to_cpu(rd->version);

fs/jffs2/write.c

@@ -296,7 +296,8 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 		return ERR_PTR(ret?ret:-EIO);
 	}
 	/* Mark the space used */
-	fd->raw = jffs2_add_physical_node_ref(c, flash_ofs | REF_PRISTINE, PAD(sizeof(*rd)+namelen), f->inocache);
+	fd->raw = jffs2_add_physical_node_ref(c, flash_ofs | dirent_node_state(rd),
+					      PAD(sizeof(*rd)+namelen), f->inocache);
 	if (IS_ERR(fd->raw)) {
 		void *hold_err = fd->raw;
 		/* Release the full_dirent which is now useless, and return */