/*
* JFFS2 -- Journalling Flash File System, Version 2.
*
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
*
* Created by David Woodhouse <dwmw2@infradead.org>
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: nodelist.c,v 1.115 2005/11/07 11:14:40 gleixner Exp $
- *
*/
#include <linux/kernel.h>
#include <linux/pagemap.h>
#include "nodelist.h"
+static void jffs2_obsolete_node_frag(struct jffs2_sb_info *c,
+ struct jffs2_node_frag *this);
+
void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list)
{
struct jffs2_full_dirent **prev = list;
if ((*prev)->nhash == new->nhash && !strcmp((*prev)->name, new->name)) {
/* Duplicate. Free one */
if (new->version < (*prev)->version) {
- dbg_dentlist("Eep! Marking new dirent node is obsolete, old is \"%s\", ino #%u\n",
+ dbg_dentlist("Eep! Marking new dirent node obsolete, old is \"%s\", ino #%u\n",
(*prev)->name, (*prev)->ino);
jffs2_mark_node_obsolete(c, new->raw);
jffs2_free_full_dirent(new);
} else {
- dbg_dentlist("marking old dirent \"%s\", ino #%u bsolete\n",
+ dbg_dentlist("marking old dirent \"%s\", ino #%u obsolete\n",
(*prev)->name, (*prev)->ino);
new->next = (*prev)->next;
- jffs2_mark_node_obsolete(c, ((*prev)->raw));
+ /* It may have been a 'placeholder' deletion dirent,
+ if jffs2_can_mark_obsolete() (see jffs2_do_unlink()) */
+ if ((*prev)->raw)
+ jffs2_mark_node_obsolete(c, ((*prev)->raw));
jffs2_free_full_dirent(*prev);
*prev = new;
}
*prev = new;
}
-void jffs2_truncate_fragtree(struct jffs2_sb_info *c, struct rb_root *list, uint32_t size)
+uint32_t jffs2_truncate_fragtree(struct jffs2_sb_info *c, struct rb_root *list, uint32_t size)
{
struct jffs2_node_frag *frag = jffs2_lookup_node_frag(list, size);
}
if (size == 0)
- return;
+ return 0;
- /*
- * If the last fragment starts at the RAM page boundary, it is
- * REF_PRISTINE irrespective of its size.
- */
frag = frag_last(list);
+
+ /* Sanity check for truncation to longer than we started with... */
+ if (!frag)
+ return 0;
+ if (frag->ofs + frag->size < size)
+ return frag->ofs + frag->size;
+
+ /* If the last fragment starts at the RAM page boundary, it is
+ * REF_PRISTINE irrespective of its size. */
if (frag->node && (frag->ofs & (PAGE_CACHE_SIZE - 1)) == 0) {
dbg_fragtree2("marking the last fragment 0x%08x-0x%08x REF_PRISTINE.\n",
frag->ofs, frag->ofs + frag->size);
frag->node->raw->flash_offset = ref_offset(frag->node->raw) | REF_PRISTINE;
}
+ return size;
}
-void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this)
+static void jffs2_obsolete_node_frag(struct jffs2_sb_info *c,
+ struct jffs2_node_frag *this)
{
if (this->node) {
this->node->frags--;
return 0;
}
-/*
- * Check the data CRC of the node.
- *
- * Returns: 0 if the data CRC is correct;
- * 1 - if incorrect;
- * error code if an error occured.
- */
-static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info *tn)
-{
- struct jffs2_raw_node_ref *ref = tn->fn->raw;
- int err = 0, pointed = 0;
- struct jffs2_eraseblock *jeb;
- unsigned char *buffer;
- uint32_t crc, ofs, len;
- size_t retlen;
-
- BUG_ON(tn->csize == 0);
-
- if (!jffs2_is_writebuffered(c))
- goto adj_acc;
-
- /* Calculate how many bytes were already checked */
- ofs = ref_offset(ref) + sizeof(struct jffs2_raw_inode);
- len = ofs % c->wbuf_pagesize;
- if (likely(len))
- len = c->wbuf_pagesize - len;
-
- if (len >= tn->csize) {
- dbg_readinode("no need to check node at %#08x, data length %u, data starts at %#08x - it has already been checked.\n",
- ref_offset(ref), tn->csize, ofs);
- goto adj_acc;
- }
-
- ofs += len;
- len = tn->csize - len;
-
- dbg_readinode("check node at %#08x, data length %u, partial CRC %#08x, correct CRC %#08x, data starts at %#08x, start checking from %#08x - %u bytes.\n",
- ref_offset(ref), tn->csize, tn->partial_crc, tn->data_crc, ofs - len, ofs, len);
-
-#ifndef __ECOS
- /* TODO: instead, incapsulate point() stuff to jffs2_flash_read(),
- * adding and jffs2_flash_read_end() interface. */
- if (c->mtd->point) {
- err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer);
- if (!err && retlen < tn->csize) {
- JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
- c->mtd->unpoint(c->mtd, buffer, ofs, len);
- } else if (err)
- JFFS2_WARNING("MTD point failed: error code %d.\n", err);
- else
- pointed = 1; /* succefully pointed to device */
- }
-#endif
-
- if (!pointed) {
- buffer = kmalloc(len, GFP_KERNEL);
- if (unlikely(!buffer))
- return -ENOMEM;
-
- /* TODO: this is very frequent pattern, make it a separate
- * routine */
- err = jffs2_flash_read(c, ofs, len, &retlen, buffer);
- if (err) {
- JFFS2_ERROR("can not read %d bytes from 0x%08x, error code: %d.\n", len, ofs, err);
- goto free_out;
- }
-
- if (retlen != len) {
- JFFS2_ERROR("short read at %#08x: %zd instead of %d.\n", ofs, retlen, len);
- err = -EIO;
- goto free_out;
- }
- }
-
- /* Continue calculating CRC */
- crc = crc32(tn->partial_crc, buffer, len);
- if(!pointed)
- kfree(buffer);
-#ifndef __ECOS
- else
- c->mtd->unpoint(c->mtd, buffer, ofs, len);
-#endif
-
- if (crc != tn->data_crc) {
- JFFS2_NOTICE("wrong data CRC in data node at 0x%08x: read %#08x, calculated %#08x.\n",
- ofs, tn->data_crc, crc);
- return 1;
- }
-
-adj_acc:
- jeb = &c->blocks[ref->flash_offset / c->sector_size];
- len = ref_totlen(c, jeb, ref);
-
- /*
- * Mark the node as having been checked and fix the
- * accounting accordingly.
- */
- spin_lock(&c->erase_completion_lock);
- jeb->used_size += len;
- jeb->unchecked_size -= len;
- c->used_size += len;
- c->unchecked_size -= len;
- spin_unlock(&c->erase_completion_lock);
-
- return 0;
-
-free_out:
- if(!pointed)
- kfree(buffer);
-#ifndef __ECOS
- else
- c->mtd->unpoint(c->mtd, buffer, ofs, len);
-#endif
- return err;
-}
-
-/*
- * Helper function for jffs2_add_older_frag_to_fragtree().
- *
- * Checks the node if we are in the checking stage.
- */
-static int check_node(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn)
-{
- int ret;
-
- BUG_ON(ref_obsolete(tn->fn->raw));
-
- /* We only check the data CRC of unchecked nodes */
- if (ref_flags(tn->fn->raw) != REF_UNCHECKED)
- return 0;
-
- dbg_fragtree2("check node %#04x-%#04x, phys offs %#08x.\n",
- tn->fn->ofs, tn->fn->ofs + tn->fn->size, ref_offset(tn->fn->raw));
-
- ret = check_node_data(c, tn);
- if (unlikely(ret < 0)) {
- JFFS2_ERROR("check_node_data() returned error: %d.\n",
- ret);
- } else if (unlikely(ret > 0)) {
- dbg_fragtree2("CRC error, mark it obsolete.\n");
- jffs2_mark_node_obsolete(c, tn->fn->raw);
- }
-
- return ret;
-}
-
-/*
- * Helper function for jffs2_add_older_frag_to_fragtree().
- *
- * Called when the new fragment that is being inserted
- * splits a hole fragment.
- */
-static int split_hole(struct jffs2_sb_info *c, struct rb_root *root,
- struct jffs2_node_frag *newfrag, struct jffs2_node_frag *hole)
-{
- dbg_fragtree2("fragment %#04x-%#04x splits the hole %#04x-%#04x\n",
- newfrag->ofs, newfrag->ofs + newfrag->size, hole->ofs, hole->ofs + hole->size);
-
- if (hole->ofs == newfrag->ofs) {
- /*
- * Well, the new fragment actually starts at the same offset as
- * the hole.
- */
- if (hole->ofs + hole->size > newfrag->ofs + newfrag->size) {
- /*
- * We replace the overlapped left part of the hole by
- * the new node.
- */
-
- dbg_fragtree2("insert fragment %#04x-%#04x and cut the left part of the hole\n",
- newfrag->ofs, newfrag->ofs + newfrag->size);
- rb_replace_node(&hole->rb, &newfrag->rb, root);
-
- hole->ofs += newfrag->size;
- hole->size -= newfrag->size;
-
- /*
- * We know that 'hole' should be the right hand
- * fragment.
- */
- jffs2_fragtree_insert(hole, newfrag);
- rb_insert_color(&hole->rb, root);
- } else {
- /*
- * Ah, the new fragment is of the same size as the hole.
- * Relace the hole by it.
- */
- dbg_fragtree2("insert fragment %#04x-%#04x and overwrite hole\n",
- newfrag->ofs, newfrag->ofs + newfrag->size);
- rb_replace_node(&hole->rb, &newfrag->rb, root);
- jffs2_free_node_frag(hole);
- }
- } else {
- /* The new fragment lefts some hole space at the left */
-
- struct jffs2_node_frag * newfrag2 = NULL;
-
- if (hole->ofs + hole->size > newfrag->ofs + newfrag->size) {
- /* The new frag also lefts some space at the right */
- newfrag2 = new_fragment(NULL, newfrag->ofs +
- newfrag->size, hole->ofs + hole->size
- - newfrag->ofs - newfrag->size);
- if (unlikely(!newfrag2)) {
- jffs2_free_node_frag(newfrag);
- return -ENOMEM;
- }
- }
-
- hole->size = newfrag->ofs - hole->ofs;
- dbg_fragtree2("left the hole %#04x-%#04x at the left and inserd fragment %#04x-%#04x\n",
- hole->ofs, hole->ofs + hole->size, newfrag->ofs, newfrag->ofs + newfrag->size);
-
- jffs2_fragtree_insert(newfrag, hole);
- rb_insert_color(&newfrag->rb, root);
-
- if (newfrag2) {
- dbg_fragtree2("left the hole %#04x-%#04x at the right\n",
- newfrag2->ofs, newfrag2->ofs + newfrag2->size);
- jffs2_fragtree_insert(newfrag2, newfrag);
- rb_insert_color(&newfrag2->rb, root);
- }
- }
-
- return 0;
-}
-
-/*
- * This function is used when we build inode. It expects the nodes are passed
- * in the decreasing version order. The whole point of this is to improve the
- * inodes checking on NAND: we check the nodes' data CRC only when they are not
- * obsoleted. Previously, add_frag_to_fragtree() function was used and
- * nodes were passed to it in the increasing version ordes and CRCs of all
- * nodes were checked.
- *
- * Note: tn->fn->size shouldn't be zero.
- *
- * Returns 0 if the node was inserted
- * 1 if it wasn't inserted (since it is obsolete)
- * < 0 an if error occured
- */
-int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
- struct jffs2_tmp_dnode_info *tn)
-{
- struct jffs2_node_frag *this, *newfrag;
- uint32_t lastend;
- struct jffs2_full_dnode *fn = tn->fn;
- struct rb_root *root = &f->fragtree;
- uint32_t fn_size = fn->size, fn_ofs = fn->ofs;
- int err, checked = 0;
- int ref_flag;
-
- dbg_fragtree("insert fragment %#04x-%#04x, ver %u\n", fn_ofs, fn_ofs + fn_size, tn->version);
-
- /* Skip all the nodes which are completed before this one starts */
- this = jffs2_lookup_node_frag(root, fn_ofs);
- if (this)
- dbg_fragtree2("'this' found %#04x-%#04x (%s)\n", this->ofs, this->ofs + this->size, this->node ? "data" : "hole");
-
- if (this)
- lastend = this->ofs + this->size;
- else
- lastend = 0;
-
- /* Detect the preliminary type of node */
- if (fn->size >= PAGE_CACHE_SIZE)
- ref_flag = REF_PRISTINE;
- else
- ref_flag = REF_NORMAL;
-
- /* See if we ran off the end of the root */
- if (lastend <= fn_ofs) {
- /* We did */
-
- /*
- * We are going to insert the new node into the
- * fragment tree, so check it.
- */
- err = check_node(c, f, tn);
- if (err != 0)
- return err;
-
- fn->frags = 1;
-
- newfrag = new_fragment(fn, fn_ofs, fn_size);
- if (unlikely(!newfrag))
- return -ENOMEM;
-
- err = no_overlapping_node(c, root, newfrag, this, lastend);
- if (unlikely(err != 0)) {
- jffs2_free_node_frag(newfrag);
- return err;
- }
-
- goto out_ok;
- }
-
- fn->frags = 0;
-
- while (1) {
- /*
- * Here we have:
- * fn_ofs < this->ofs + this->size && fn_ofs >= this->ofs.
- *
- * Remember, 'this' has higher version, any non-hole node
- * which is already in the fragtree is newer then the newly
- * inserted.
- */
- if (!this->node) {
- /*
- * 'this' is the hole fragment, so at least the
- * beginning of the new fragment is valid.
- */
-
- /*
- * We are going to insert the new node into the
- * fragment tree, so check it.
- */
- if (!checked) {
- err = check_node(c, f, tn);
- if (unlikely(err != 0))
- return err;
- checked = 1;
- }
-
- if (this->ofs + this->size >= fn_ofs + fn_size) {
- /* We split the hole on two parts */
-
- fn->frags += 1;
- newfrag = new_fragment(fn, fn_ofs, fn_size);
- if (unlikely(!newfrag))
- return -ENOMEM;
-
- err = split_hole(c, root, newfrag, this);
- if (unlikely(err))
- return err;
- goto out_ok;
- }
-
- /*
- * The beginning of the new fragment is valid since it
- * overlaps the hole node.
- */
-
- ref_flag = REF_NORMAL;
-
- fn->frags += 1;
- newfrag = new_fragment(fn, fn_ofs,
- this->ofs + this->size - fn_ofs);
- if (unlikely(!newfrag))
- return -ENOMEM;
-
- if (fn_ofs == this->ofs) {
- /*
- * The new node starts at the same offset as
- * the hole and supersieds the hole.
- */
- dbg_fragtree2("add the new fragment instead of hole %#04x-%#04x, refcnt %d\n",
- fn_ofs, fn_ofs + this->ofs + this->size - fn_ofs, fn->frags);
-
- rb_replace_node(&this->rb, &newfrag->rb, root);
- jffs2_free_node_frag(this);
- } else {
- /*
- * The hole becomes shorter as its right part
- * is supersieded by the new fragment.
- */
- dbg_fragtree2("reduce size of hole %#04x-%#04x to %#04x-%#04x\n",
- this->ofs, this->ofs + this->size, this->ofs, this->ofs + this->size - newfrag->size);
-
- dbg_fragtree2("add new fragment %#04x-%#04x, refcnt %d\n", fn_ofs,
- fn_ofs + this->ofs + this->size - fn_ofs, fn->frags);
-
- this->size -= newfrag->size;
- jffs2_fragtree_insert(newfrag, this);
- rb_insert_color(&newfrag->rb, root);
- }
-
- fn_ofs += newfrag->size;
- fn_size -= newfrag->size;
- this = rb_entry(rb_next(&newfrag->rb),
- struct jffs2_node_frag, rb);
-
- dbg_fragtree2("switch to the next 'this' fragment: %#04x-%#04x %s\n",
- this->ofs, this->ofs + this->size, this->node ? "(data)" : "(hole)");
- }
-
- /*
- * 'This' node is not the hole so it obsoletes the new fragment
- * either fully or partially.
- */
- if (this->ofs + this->size >= fn_ofs + fn_size) {
- /* The new node is obsolete, drop it */
- if (fn->frags == 0) {
- dbg_fragtree2("%#04x-%#04x is obsolete, mark it obsolete\n", fn_ofs, fn_ofs + fn_size);
- ref_flag = REF_OBSOLETE;
- }
- goto out_ok;
- } else {
- struct jffs2_node_frag *new_this;
-
- /* 'This' node obsoletes the beginning of the new node */
- dbg_fragtree2("the beginning %#04x-%#04x is obsolete\n", fn_ofs, this->ofs + this->size);
-
- ref_flag = REF_NORMAL;
-
- fn_size -= this->ofs + this->size - fn_ofs;
- fn_ofs = this->ofs + this->size;
- dbg_fragtree2("now considering %#04x-%#04x\n", fn_ofs, fn_ofs + fn_size);
-
- new_this = rb_entry(rb_next(&this->rb), struct jffs2_node_frag, rb);
- if (!new_this) {
- /*
- * There is no next fragment. Add the rest of
- * the new node as the right-hand child.
- */
- if (!checked) {
- err = check_node(c, f, tn);
- if (unlikely(err != 0))
- return err;
- checked = 1;
- }
-
- fn->frags += 1;
- newfrag = new_fragment(fn, fn_ofs, fn_size);
- if (unlikely(!newfrag))
- return -ENOMEM;
-
- dbg_fragtree2("there are no more fragments, insert %#04x-%#04x\n",
- newfrag->ofs, newfrag->ofs + newfrag->size);
- rb_link_node(&newfrag->rb, &this->rb, &this->rb.rb_right);
- rb_insert_color(&newfrag->rb, root);
- goto out_ok;
- } else {
- this = new_this;
- dbg_fragtree2("switch to the next 'this' fragment: %#04x-%#04x %s\n",
- this->ofs, this->ofs + this->size, this->node ? "(data)" : "(hole)");
- }
- }
- }
-
-out_ok:
- BUG_ON(fn->size < PAGE_CACHE_SIZE && ref_flag == REF_PRISTINE);
-
- if (ref_flag == REF_OBSOLETE) {
- dbg_fragtree2("the node is obsolete now\n");
- /* jffs2_mark_node_obsolete() will adjust space accounting */
- jffs2_mark_node_obsolete(c, fn->raw);
- return 1;
- }
-
- dbg_fragtree2("the node is \"%s\" now\n", ref_flag == REF_NORMAL ? "REF_NORMAL" : "REF_PRISTINE");
-
- /* Space accounting was adjusted at check_node_data() */
- spin_lock(&c->erase_completion_lock);
- fn->raw->flash_offset = ref_offset(fn->raw) | ref_flag;
- spin_unlock(&c->erase_completion_lock);
-
- return 0;
-}
-
void jffs2_set_inocache_state(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic, int state)
{
spin_lock(&c->inocache_lock);
{
struct jffs2_inode_cache **prev;
+#ifdef CONFIG_JFFS2_FS_XATTR
+ BUG_ON(old->xref);
+#endif
dbg_inocache("del %p (ino #%u)\n", old, old->ino);
spin_lock(&c->inocache_lock);
this = c->inocache_list[i];
while (this) {
next = this->next;
+ jffs2_xattr_free_inode(c, this);
jffs2_free_inode_cache(this);
this = next;
}
for (i=0; i<c->nr_blocks; i++) {
this = c->blocks[i].first_node;
- while(this) {
- next = this->next_phys;
- jffs2_free_raw_node_ref(this);
+ while (this) {
+ if (this[REFS_PER_BLOCK].flash_offset == REF_LINK_NODE)
+ next = this[REFS_PER_BLOCK].next_in_ino;
+ else
+ next = NULL;
+
+ jffs2_free_refblock(this);
this = next;
}
c->blocks[i].first_node = c->blocks[i].last_node = NULL;
cond_resched();
}
}
+
+struct jffs2_raw_node_ref *jffs2_link_node_ref(struct jffs2_sb_info *c,
+ struct jffs2_eraseblock *jeb,
+ uint32_t ofs, uint32_t len,
+ struct jffs2_inode_cache *ic)
+{
+ struct jffs2_raw_node_ref *ref;
+
+ BUG_ON(!jeb->allocated_refs);
+ jeb->allocated_refs--;
+
+ ref = jeb->last_node;
+
+ dbg_noderef("Last node at %p is (%08x,%p)\n", ref, ref->flash_offset,
+ ref->next_in_ino);
+
+ while (ref->flash_offset != REF_EMPTY_NODE) {
+ if (ref->flash_offset == REF_LINK_NODE)
+ ref = ref->next_in_ino;
+ else
+ ref++;
+ }
+
+ dbg_noderef("New ref is %p (%08x becomes %08x,%p) len 0x%x\n", ref,
+ ref->flash_offset, ofs, ref->next_in_ino, len);
+
+ ref->flash_offset = ofs;
+
+ if (!jeb->first_node) {
+ jeb->first_node = ref;
+ BUG_ON(ref_offset(ref) != jeb->offset);
+ } else if (unlikely(ref_offset(ref) != jeb->offset + c->sector_size - jeb->free_size)) {
+ uint32_t last_len = ref_totlen(c, jeb, jeb->last_node);
+
+ JFFS2_ERROR("Adding new ref %p at (0x%08x-0x%08x) not immediately after previous (0x%08x-0x%08x)\n",
+ ref, ref_offset(ref), ref_offset(ref)+len,
+ ref_offset(jeb->last_node),
+ ref_offset(jeb->last_node)+last_len);
+ BUG();
+ }
+ jeb->last_node = ref;
+
+ if (ic) {
+ ref->next_in_ino = ic->nodes;
+ ic->nodes = ref;
+ } else {
+ ref->next_in_ino = NULL;
+ }
+
+ switch(ref_flags(ref)) {
+ case REF_UNCHECKED:
+ c->unchecked_size += len;
+ jeb->unchecked_size += len;
+ break;
+
+ case REF_NORMAL:
+ case REF_PRISTINE:
+ c->used_size += len;
+ jeb->used_size += len;
+ break;
+
+ case REF_OBSOLETE:
+ c->dirty_size += len;
+ jeb->dirty_size += len;
+ break;
+ }
+ c->free_size -= len;
+ jeb->free_size -= len;
+
+#ifdef TEST_TOTLEN
+ /* Set (and test) __totlen field... for now */
+ ref->__totlen = len;
+ ref_totlen(c, jeb, ref);
+#endif
+ return ref;
+}
+
+/* No locking, no reservation of 'ref'. Do not use on a live file system */
+int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+ uint32_t size)
+{
+ if (!size)
+ return 0;
+ if (unlikely(size > jeb->free_size)) {
+ printk(KERN_CRIT "Dirty space 0x%x larger then free_size 0x%x (wasted 0x%x)\n",
+ size, jeb->free_size, jeb->wasted_size);
+ BUG();
+ }
+ /* REF_EMPTY_NODE is !obsolete, so that works OK */
+ if (jeb->last_node && ref_obsolete(jeb->last_node)) {
+#ifdef TEST_TOTLEN
+ jeb->last_node->__totlen += size;
+#endif
+ c->dirty_size += size;
+ c->free_size -= size;
+ jeb->dirty_size += size;
+ jeb->free_size -= size;
+ } else {
+ uint32_t ofs = jeb->offset + c->sector_size - jeb->free_size;
+ ofs |= REF_OBSOLETE;
+
+ jffs2_link_node_ref(c, jeb, ofs, size, NULL);
+ }
+
+ return 0;
+}
+
+/* Calculate totlen from surrounding nodes or eraseblock */
+static inline uint32_t __ref_totlen(struct jffs2_sb_info *c,
+ struct jffs2_eraseblock *jeb,
+ struct jffs2_raw_node_ref *ref)
+{
+ uint32_t ref_end;
+ struct jffs2_raw_node_ref *next_ref = ref_next(ref);
+
+ if (next_ref)
+ ref_end = ref_offset(next_ref);
+ else {
+ if (!jeb)
+ jeb = &c->blocks[ref->flash_offset / c->sector_size];
+
+ /* Last node in block. Use free_space */
+ if (unlikely(ref != jeb->last_node)) {
+ printk(KERN_CRIT "ref %p @0x%08x is not jeb->last_node (%p @0x%08x)\n",
+ ref, ref_offset(ref), jeb->last_node, jeb->last_node?ref_offset(jeb->last_node):0);
+ BUG();
+ }
+ ref_end = jeb->offset + c->sector_size - jeb->free_size;
+ }
+ return ref_end - ref_offset(ref);
+}
+
+uint32_t __jffs2_ref_totlen(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+ struct jffs2_raw_node_ref *ref)
+{
+ uint32_t ret;
+
+ ret = __ref_totlen(c, jeb, ref);
+
+#ifdef TEST_TOTLEN
+ if (unlikely(ret != ref->__totlen)) {
+ if (!jeb)
+ jeb = &c->blocks[ref->flash_offset / c->sector_size];
+
+ printk(KERN_CRIT "Totlen for ref at %p (0x%08x-0x%08x) miscalculated as 0x%x instead of %x\n",
+ ref, ref_offset(ref), ref_offset(ref)+ref->__totlen,
+ ret, ref->__totlen);
+ if (ref_next(ref)) {
+ printk(KERN_CRIT "next %p (0x%08x-0x%08x)\n", ref_next(ref), ref_offset(ref_next(ref)),
+ ref_offset(ref_next(ref))+ref->__totlen);
+ } else
+ printk(KERN_CRIT "No next ref. jeb->last_node is %p\n", jeb->last_node);
+
+ printk(KERN_CRIT "jeb->wasted_size %x, dirty_size %x, used_size %x, free_size %x\n", jeb->wasted_size, jeb->dirty_size, jeb->used_size, jeb->free_size);
+
+#if defined(JFFS2_DBG_DUMPS) || defined(JFFS2_DBG_PARANOIA_CHECKS)
+ __jffs2_dbg_dump_node_refs_nolock(c, jeb);
+#endif
+
+ WARN_ON(1);
+
+ ret = ref->__totlen;
+ }
+#endif /* TEST_TOTLEN */
+ return ret;
+}