[JFFS2] Introduce jffs2_link_node_ref() function to reduce code duplication

The same sequence of code was repeated in many places, to add a new
struct jffs2_raw_node_ref to an eraseblock and adjust the space accounting
accordingly. Move it out-of-line.

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

1 files changed, 11 insertions, 38 deletions

diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 40d62d057aa4..3cbe9f029e01 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -351,17 +351,11 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
         xd->data_crc = je32_to_cpu(rx->data_crc);
         xd->node = raw;
 
-        raw->__totlen = totlen;
         raw->flash_offset = ofs | REF_PRISTINE;
-        raw->next_phys = NULL;
         raw->next_in_ino = (void *)xd;
-        if (!jeb->first_node)
-                jeb->first_node = raw;
-        if (jeb->last_node)
-                jeb->last_node->next_phys = raw;
-        jeb->last_node = raw;
 
-        USED_SPACE(PAD(je32_to_cpu(rx->totlen)));
+        jffs2_link_node_ref(c, jeb, raw, totlen);
+
         if (jffs2_sum_active())
                 jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset);
         dbg_xattr("scaning xdatum at %#08x (xid=%u, version=%u)\n",
@@ -418,17 +412,11 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock
         ref->next = c->xref_temp;
         c->xref_temp = ref;
 
-        raw->__totlen = PAD(je32_to_cpu(rr->totlen));
         raw->flash_offset = ofs | REF_PRISTINE;
-        raw->next_phys = NULL;
         raw->next_in_ino = (void *)ref;
-        if (!jeb->first_node)
-                jeb->first_node = raw;
-        if (jeb->last_node)
-                jeb->last_node->next_phys = raw;
-        jeb->last_node = raw;
 
-        USED_SPACE(PAD(je32_to_cpu(rr->totlen)));       
+        jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(rr->totlen)));
+
         if (jffs2_sum_active())
                 jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset);
         dbg_xattr("scan xref at %#08x (xid=%u, ino=%u)\n",
@@ -827,12 +815,10 @@ scan_more:
                                         return -ENOMEM;
                                 }
                                 marker_ref->next_in_ino = NULL;
-                                marker_ref->next_phys = NULL;
                                 marker_ref->flash_offset = ofs | REF_NORMAL;
-                                marker_ref->__totlen = c->cleanmarker_size;
-                                jeb->first_node = jeb->last_node = marker_ref;
 
-                                USED_SPACE(PAD(c->cleanmarker_size));
+                                jffs2_link_node_ref(c, jeb, marker_ref, c->cleanmarker_size);
+
                                 ofs += PAD(c->cleanmarker_size);
                         }
                         break;
@@ -971,16 +957,11 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
         /* Wheee. It worked */
 
         raw->flash_offset = ofs | REF_UNCHECKED;
-        raw->__totlen = PAD(je32_to_cpu(ri->totlen));
-        raw->next_phys = NULL;
-        raw->next_in_ino = ic->nodes;
 
+        raw->next_in_ino = ic->nodes;
         ic->nodes = raw;
-        if (!jeb->first_node)
-                jeb->first_node = raw;
-        if (jeb->last_node)
-                jeb->last_node->next_phys = raw;
-        jeb->last_node = raw;
+        
+        jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(ri->totlen)));
 
         D1(printk(KERN_DEBUG "Node is ino #%u, version %d. Range 0x%x-0x%x\n",
                   je32_to_cpu(ri->ino), je32_to_cpu(ri->version),
@@ -989,8 +970,6 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 
         pseudo_random += je32_to_cpu(ri->version);
 
-        UNCHECKED_SPACE(PAD(je32_to_cpu(ri->totlen)));
-
         if (jffs2_sum_active()) {
                 jffs2_sum_add_inode_mem(s, ri, ofs - jeb->offset);
         }
@@ -1053,16 +1032,11 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
                 return -ENOMEM;
         }
 
-        raw->__totlen = PAD(je32_to_cpu(rd->totlen));
         raw->flash_offset = ofs | REF_PRISTINE;
-        raw->next_phys = NULL;
         raw->next_in_ino = ic->nodes;
         ic->nodes = raw;
-        if (!jeb->first_node)
-                jeb->first_node = raw;
-        if (jeb->last_node)
-                jeb->last_node->next_phys = raw;
-        jeb->last_node = raw;
+
+        jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(rd->totlen)));
 
         fd->raw = raw;
         fd->next = NULL;
@@ -1070,7 +1044,6 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
         fd->ino = je32_to_cpu(rd->ino);
         fd->nhash = full_name_hash(fd->name, rd->nsize);
         fd->type = rd->type;
-        USED_SPACE(PAD(je32_to_cpu(rd->totlen)));
         jffs2_add_fd_to_list(c, fd, &ic->scan_dents);
 
         if (jffs2_sum_active()) {