return DEFAULT_EMPTY_SCAN_SIZE;
}
+static int file_dirty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
+{
+ int ret;
+
+ if ((ret = jffs2_prealloc_raw_node_refs(c, jeb, 1)))
+ return ret;
+ if ((ret = jffs2_scan_dirty_space(c, jeb, jeb->free_size)))
+ return ret;
+ /* Turned wasted size into dirty, since we apparently
+ think it's recoverable now. */
+ jeb->dirty_size += jeb->wasted_size;
+ c->dirty_size += jeb->wasted_size;
+ c->wasted_size -= jeb->wasted_size;
+ jeb->wasted_size = 0;
+ if (VERYDIRTY(c, jeb->dirty_size)) {
+ list_add(&jeb->list, &c->very_dirty_list);
+ } else {
+ list_add(&jeb->list, &c->dirty_list);
+ }
+ return 0;
+}
+
int jffs2_scan_medium(struct jffs2_sb_info *c)
{
int i, ret;
(!c->nextblock || c->nextblock->free_size < jeb->free_size)) {
/* Better candidate for the next writes to go to */
if (c->nextblock) {
- c->nextblock->dirty_size += c->nextblock->free_size + c->nextblock->wasted_size;
- c->dirty_size += c->nextblock->free_size + c->nextblock->wasted_size;
- c->free_size -= c->nextblock->free_size;
- c->wasted_size -= c->nextblock->wasted_size;
- c->nextblock->free_size = c->nextblock->wasted_size = 0;
- if (VERYDIRTY(c, c->nextblock->dirty_size)) {
- list_add(&c->nextblock->list, &c->very_dirty_list);
- } else {
- list_add(&c->nextblock->list, &c->dirty_list);
- }
+ ret = file_dirty(c, c->nextblock);
+ if (ret)
+ return ret;
/* deleting summary information of the old nextblock */
jffs2_sum_reset_collected(c->summary);
}
- /* update collected summary infromation for the current nextblock */
+ /* update collected summary information for the current nextblock */
jffs2_sum_move_collected(c, s);
D1(printk(KERN_DEBUG "jffs2_scan_medium(): new nextblock = 0x%08x\n", jeb->offset));
c->nextblock = jeb;
} else {
- jeb->dirty_size += jeb->free_size + jeb->wasted_size;
- c->dirty_size += jeb->free_size + jeb->wasted_size;
- c->free_size -= jeb->free_size;
- c->wasted_size -= jeb->wasted_size;
- jeb->free_size = jeb->wasted_size = 0;
- if (VERYDIRTY(c, jeb->dirty_size)) {
- list_add(&jeb->list, &c->very_dirty_list);
- } else {
- list_add(&jeb->list, &c->dirty_list);
- }
+ ret = file_dirty(c, jeb);
+ if (ret)
+ return ret;
}
break;
D1(printk(KERN_DEBUG "jffs2_scan_medium(): Skipping %d bytes in nextblock to ensure page alignment\n",
skip));
- c->nextblock->wasted_size += skip;
- c->wasted_size += skip;
-
- c->nextblock->free_size -= skip;
- c->free_size -= skip;
+ jffs2_prealloc_raw_node_refs(c, c->nextblock, 1);
+ jffs2_scan_dirty_space(c, c->nextblock, skip);
}
#endif
if (c->nr_erasing_blocks) {
int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
{
if ((jeb->used_size + jeb->unchecked_size) == PAD(c->cleanmarker_size) && !jeb->dirty_size
- && (!jeb->first_node || !jeb->first_node->next_phys) )
+ && (!jeb->first_node || !ref_next(jeb->first_node)) )
return BLK_STATE_CLEANMARKER;
/* move blocks with max 4 byte dirty space to cleanlist */
struct jffs2_summary *s)
{
struct jffs2_xattr_datum *xd;
- struct jffs2_raw_node_ref *raw;
uint32_t totlen, crc;
+ int err;
crc = crc32(0, rx, sizeof(struct jffs2_raw_xattr) - 4);
if (crc != je32_to_cpu(rx->node_crc)) {
if (je32_to_cpu(rx->node_crc) != 0xffffffff)
JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
ofs, je32_to_cpu(rx->node_crc), crc);
- DIRTY_SPACE(je32_to_cpu(rx->totlen));
+ if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rx->totlen))))
+ return err;
return 0;
}
if (totlen != je32_to_cpu(rx->totlen)) {
JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n",
ofs, je32_to_cpu(rx->totlen), totlen);
- DIRTY_SPACE(je32_to_cpu(rx->totlen));
+ if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rx->totlen))))
+ return err;
return 0;
}
- raw = jffs2_alloc_raw_node_ref();
- if (!raw)
- return -ENOMEM;
-
xd = jffs2_setup_xattr_datum(c, je32_to_cpu(rx->xid), je32_to_cpu(rx->version));
if (IS_ERR(xd)) {
- jffs2_free_raw_node_ref(raw);
if (PTR_ERR(xd) == -EEXIST) {
- DIRTY_SPACE(PAD(je32_to_cpu(rx->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rx->totlen)))))
+ return err;
return 0;
}
return PTR_ERR(xd);
xd->name_len = rx->name_len;
xd->value_len = je16_to_cpu(rx->value_len);
xd->data_crc = je32_to_cpu(rx->data_crc);
- xd->node = raw;
-
- raw->flash_offset = ofs | REF_PRISTINE;
- raw->next_in_ino = (void *)xd;
- jffs2_link_node_ref(c, jeb, raw, totlen);
+ xd->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, NULL);
+ /* FIXME */ xd->node->next_in_ino = (void *)xd;
if (jffs2_sum_active())
jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset);
struct jffs2_summary *s)
{
struct jffs2_xattr_ref *ref;
- struct jffs2_raw_node_ref *raw;
uint32_t crc;
+ int err;
crc = crc32(0, rr, sizeof(*rr) - 4);
if (crc != je32_to_cpu(rr->node_crc)) {
if (je32_to_cpu(rr->node_crc) != 0xffffffff)
JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
ofs, je32_to_cpu(rr->node_crc), crc);
- DIRTY_SPACE(PAD(je32_to_cpu(rr->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rr->totlen)))))
+ return err;
return 0;
}
if (PAD(sizeof(struct jffs2_raw_xref)) != je32_to_cpu(rr->totlen)) {
- JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n",
+ JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%zd\n",
ofs, je32_to_cpu(rr->totlen),
PAD(sizeof(struct jffs2_raw_xref)));
- DIRTY_SPACE(je32_to_cpu(rr->totlen));
+ if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rr->totlen))))
+ return err;
return 0;
}
if (!ref)
return -ENOMEM;
- raw = jffs2_alloc_raw_node_ref();
- if (!raw) {
- jffs2_free_xattr_ref(ref);
- return -ENOMEM;
- }
-
/* BEFORE jffs2_build_xattr_subsystem() called,
* ref->xid is used to store 32bit xid, xd is not used
* ref->ino is used to store 32bit inode-number, ic is not used
* used to chain all xattr_ref object. It's re-chained to
* jffs2_inode_cache in jffs2_build_xattr_subsystem() correctly.
*/
- ref->node = raw;
ref->ino = je32_to_cpu(rr->ino);
ref->xid = je32_to_cpu(rr->xid);
ref->next = c->xref_temp;
c->xref_temp = ref;
- raw->flash_offset = ofs | REF_PRISTINE;
- raw->next_in_ino = (void *)ref;
-
- jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(rr->totlen)));
+ ref->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rr->totlen)), NULL);
+ /* FIXME */ ref->node->next_in_ino = (void *)ref;
if (jffs2_sum_active())
jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset);
if (!buf_size) {
/* XIP case. Just look, point at the summary if it's there */
- sm = (void *)buf + jeb->offset - sizeof(*sm);
+ sm = (void *)buf + c->sector_size - sizeof(*sm);
if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC) {
sumptr = buf + je32_to_cpu(sm->offset);
sumlen = c->sector_size - je32_to_cpu(sm->offset);
if (sumptr) {
err = jffs2_sum_scan_sumnode(c, jeb, sumptr, sumlen, &pseudo_random);
- if (err)
- return err;
+
if (buf_size && sumlen > buf_size)
kfree(sumptr);
+ /* If it returns with a real error, bail.
+ If it returns positive, that's a block classification
+ (i.e. BLK_STATE_xxx) so return that too.
+ If it returns zero, fall through to full scan. */
+ if (err)
+ return err;
}
}
if (ofs) {
D1(printk(KERN_DEBUG "Free space at %08x ends at %08x\n", jeb->offset,
jeb->offset + ofs));
- DIRTY_SPACE(ofs);
+ if ((err = jffs2_prealloc_raw_node_refs(c, jeb, 1)))
+ return err;
+ if ((err = jffs2_scan_dirty_space(c, jeb, ofs)))
+ return err;
}
/* Now ofs is a complete physical flash offset as it always was... */
jffs2_dbg_acct_paranoia_check_nolock(c, jeb);
+ /* Make sure there are node refs available for use */
+ err = jffs2_prealloc_raw_node_refs(c, jeb, 2);
+ if (err)
+ return err;
+
cond_resched();
if (ofs & 3) {
}
if (ofs == prevofs) {
printk(KERN_WARNING "ofs 0x%08x has already been seen. Skipping\n", ofs);
- DIRTY_SPACE(4);
+ if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+ return err;
ofs += 4;
continue;
}
if (jeb->offset + c->sector_size < ofs + sizeof(*node)) {
D1(printk(KERN_DEBUG "Fewer than %zd bytes left to end of block. (%x+%x<%x+%zx) Not reading\n", sizeof(struct jffs2_unknown_node),
jeb->offset, c->sector_size, ofs, sizeof(*node)));
- DIRTY_SPACE((jeb->offset + c->sector_size)-ofs);
+ if ((err = jffs2_scan_dirty_space(c, jeb, (jeb->offset + c->sector_size)-ofs)))
+ return err;
break;
}
if (*(uint32_t *)(&buf[inbuf_ofs]) != 0xffffffff) {
printk(KERN_WARNING "Empty flash at 0x%08x ends at 0x%08x\n",
empty_start, ofs);
- DIRTY_SPACE(ofs-empty_start);
+ if ((err = jffs2_scan_dirty_space(c, jeb, ofs-empty_start)))
+ return err;
goto scan_more;
}
/* If we're only checking the beginning of a block with a cleanmarker,
bail now */
if (buf_ofs == jeb->offset && jeb->used_size == PAD(c->cleanmarker_size) &&
- c->cleanmarker_size && !jeb->dirty_size && !jeb->first_node->next_phys) {
+ c->cleanmarker_size && !jeb->dirty_size && !ref_next(jeb->first_node)) {
D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE(c->sector_size)));
return BLK_STATE_CLEANMARKER;
}
if (ofs == jeb->offset && je16_to_cpu(node->magic) == KSAMTIB_CIGAM_2SFFJ) {
printk(KERN_WARNING "Magic bitmask is backwards at offset 0x%08x. Wrong endian filesystem?\n", ofs);
- DIRTY_SPACE(4);
+ if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+ return err;
ofs += 4;
continue;
}
if (je16_to_cpu(node->magic) == JFFS2_DIRTY_BITMASK) {
D1(printk(KERN_DEBUG "Dirty bitmask at 0x%08x\n", ofs));
- DIRTY_SPACE(4);
+ if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+ return err;
ofs += 4;
continue;
}
if (je16_to_cpu(node->magic) == JFFS2_OLD_MAGIC_BITMASK) {
printk(KERN_WARNING "Old JFFS2 bitmask found at 0x%08x\n", ofs);
printk(KERN_WARNING "You cannot use older JFFS2 filesystems with newer kernels\n");
- DIRTY_SPACE(4);
+ if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+ return err;
ofs += 4;
continue;
}
noisy_printk(&noise, "jffs2_scan_eraseblock(): Magic bitmask 0x%04x not found at 0x%08x: 0x%04x instead\n",
JFFS2_MAGIC_BITMASK, ofs,
je16_to_cpu(node->magic));
- DIRTY_SPACE(4);
+ if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+ return err;
ofs += 4;
continue;
}
je32_to_cpu(node->totlen),
je32_to_cpu(node->hdr_crc),
hdr_crc);
- DIRTY_SPACE(4);
+ if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+ return err;
ofs += 4;
continue;
}
printk(KERN_WARNING "Node at 0x%08x with length 0x%08x would run over the end of the erase block\n",
ofs, je32_to_cpu(node->totlen));
printk(KERN_WARNING "Perhaps the file system was created with the wrong erase size?\n");
- DIRTY_SPACE(4);
+ if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+ return err;
ofs += 4;
continue;
}
if (!(je16_to_cpu(node->nodetype) & JFFS2_NODE_ACCURATE)) {
/* Wheee. This is an obsoleted node */
D2(printk(KERN_DEBUG "Node at 0x%08x is obsolete. Skipping\n", ofs));
- DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+ return err;
ofs += PAD(je32_to_cpu(node->totlen));
continue;
}
if (je32_to_cpu(node->totlen) != c->cleanmarker_size) {
printk(KERN_NOTICE "CLEANMARKER node found at 0x%08x has totlen 0x%x != normal 0x%x\n",
ofs, je32_to_cpu(node->totlen), c->cleanmarker_size);
- DIRTY_SPACE(PAD(sizeof(struct jffs2_unknown_node)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(sizeof(struct jffs2_unknown_node)))))
+ return err;
ofs += PAD(sizeof(struct jffs2_unknown_node));
} else if (jeb->first_node) {
printk(KERN_NOTICE "CLEANMARKER node found at 0x%08x, not first node in block (0x%08x)\n", ofs, jeb->offset);
- DIRTY_SPACE(PAD(sizeof(struct jffs2_unknown_node)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(sizeof(struct jffs2_unknown_node)))))
+ return err;
ofs += PAD(sizeof(struct jffs2_unknown_node));
} else {
- struct jffs2_raw_node_ref *marker_ref = jffs2_alloc_raw_node_ref();
- if (!marker_ref) {
- printk(KERN_NOTICE "Failed to allocate node ref for clean marker\n");
- return -ENOMEM;
- }
- marker_ref->next_in_ino = NULL;
- marker_ref->flash_offset = ofs | REF_NORMAL;
-
- jffs2_link_node_ref(c, jeb, marker_ref, c->cleanmarker_size);
+ jffs2_link_node_ref(c, jeb, ofs | REF_NORMAL, c->cleanmarker_size, NULL);
ofs += PAD(c->cleanmarker_size);
}
case JFFS2_NODETYPE_PADDING:
if (jffs2_sum_active())
jffs2_sum_add_padding_mem(s, je32_to_cpu(node->totlen));
- DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+ return err;
ofs += PAD(je32_to_cpu(node->totlen));
break;
c->flags |= JFFS2_SB_FLAG_RO;
if (!(jffs2_is_readonly(c)))
return -EROFS;
- DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+ return err;
ofs += PAD(je32_to_cpu(node->totlen));
break;
case JFFS2_FEATURE_RWCOMPAT_DELETE:
D1(printk(KERN_NOTICE "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs));
- DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+ return err;
ofs += PAD(je32_to_cpu(node->totlen));
break;
- case JFFS2_FEATURE_RWCOMPAT_COPY:
+ case JFFS2_FEATURE_RWCOMPAT_COPY: {
D1(printk(KERN_NOTICE "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs));
- USED_SPACE(PAD(je32_to_cpu(node->totlen)));
+
+ jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(node->totlen)), NULL);
+
+ /* We can't summarise nodes we don't grok */
+ jffs2_sum_disable_collecting(s);
ofs += PAD(je32_to_cpu(node->totlen));
break;
+ }
}
}
}
}
}
- D1(printk(KERN_DEBUG "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x\n", jeb->offset,
- jeb->free_size, jeb->dirty_size, jeb->unchecked_size, jeb->used_size));
-
+ D1(printk(KERN_DEBUG "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
+ jeb->offset,jeb->free_size, jeb->dirty_size, jeb->unchecked_size, jeb->used_size, jeb->wasted_size));
+
/* mark_node_obsolete can add to wasted !! */
if (jeb->wasted_size) {
jeb->dirty_size += jeb->wasted_size;
static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s)
{
- struct jffs2_raw_node_ref *raw;
struct jffs2_inode_cache *ic;
uint32_t ino = je32_to_cpu(ri->ino);
+ int err;
D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs));
Which means that the _full_ amount of time to get to proper write mode with GC
operational may actually be _longer_ than before. Sucks to be me. */
- raw = jffs2_alloc_raw_node_ref();
- if (!raw) {
- printk(KERN_NOTICE "jffs2_scan_inode_node(): allocation of node reference failed\n");
- return -ENOMEM;
- }
-
ic = jffs2_get_ino_cache(c, ino);
if (!ic) {
/* Inocache get failed. Either we read a bogus ino# or it's just genuinely the
printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
ofs, je32_to_cpu(ri->node_crc), crc);
/* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
- DIRTY_SPACE(PAD(je32_to_cpu(ri->totlen)));
- jffs2_free_raw_node_ref(raw);
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(ri->totlen)))))
+ return err;
return 0;
}
ic = jffs2_scan_make_ino_cache(c, ino);
- if (!ic) {
- jffs2_free_raw_node_ref(raw);
+ if (!ic)
return -ENOMEM;
- }
}
/* Wheee. It worked */
-
- raw->flash_offset = ofs | REF_UNCHECKED;
-
- raw->next_in_ino = ic->nodes;
- ic->nodes = raw;
-
- jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(ri->totlen)));
+ jffs2_link_node_ref(c, jeb, ofs | REF_UNCHECKED, PAD(je32_to_cpu(ri->totlen)), ic);
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),
static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
struct jffs2_raw_dirent *rd, uint32_t ofs, struct jffs2_summary *s)
{
- struct jffs2_raw_node_ref *raw;
struct jffs2_full_dirent *fd;
struct jffs2_inode_cache *ic;
uint32_t crc;
+ int err;
D1(printk(KERN_DEBUG "jffs2_scan_dirent_node(): Node at 0x%08x\n", ofs));
printk(KERN_NOTICE "jffs2_scan_dirent_node(): Node CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
ofs, je32_to_cpu(rd->node_crc), crc);
/* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
- DIRTY_SPACE(PAD(je32_to_cpu(rd->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rd->totlen)))))
+ return err;
return 0;
}
jffs2_free_full_dirent(fd);
/* FIXME: Why do we believe totlen? */
/* We believe totlen because the CRC on the node _header_ was OK, just the name failed. */
- DIRTY_SPACE(PAD(je32_to_cpu(rd->totlen)));
+ if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rd->totlen)))))
+ return err;
return 0;
}
- raw = jffs2_alloc_raw_node_ref();
- if (!raw) {
- jffs2_free_full_dirent(fd);
- printk(KERN_NOTICE "jffs2_scan_dirent_node(): allocation of node reference failed\n");
- return -ENOMEM;
- }
ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(rd->pino));
if (!ic) {
jffs2_free_full_dirent(fd);
- jffs2_free_raw_node_ref(raw);
return -ENOMEM;
}
- raw->flash_offset = ofs | REF_PRISTINE;
- raw->next_in_ino = ic->nodes;
- ic->nodes = raw;
-
- jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(rd->totlen)));
+ fd->raw = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rd->totlen)), ic);
- fd->raw = raw;
fd->next = NULL;
fd->version = je32_to_cpu(rd->version);
fd->ino = je32_to_cpu(rd->ino);