*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: nodelist.h,v 1.126 2004/11/19 15:06:29 dedekind Exp $
+ * $Id: nodelist.h,v 1.140 2005/09/07 08:34:54 havasi Exp $
*
*/
#include <linux/jffs2.h>
#include <linux/jffs2_fs_sb.h>
#include <linux/jffs2_fs_i.h>
+#include "summary.h"
#ifdef __ECOS
#include "os-ecos.h"
#else
-#include <linux/mtd/compatmac.h> /* For min/max in older kernels */
+#include <linux/mtd/compatmac.h> /* For compatibility with older kernels */
#include "os-linux.h"
#endif
-#ifndef CONFIG_JFFS2_FS_DEBUG
-#define CONFIG_JFFS2_FS_DEBUG 1
-#endif
-
-#if CONFIG_JFFS2_FS_DEBUG > 0
-#define D1(x) x
-#else
-#define D1(x)
-#endif
-
-#if CONFIG_JFFS2_FS_DEBUG > 1
-#define D2(x) x
-#else
-#define D2(x)
-#endif
-
#define JFFS2_NATIVE_ENDIAN
/* Note we handle mode bits conversion from JFFS2 (i.e. Linux) to/from
#define je16_to_cpu(x) (le16_to_cpu(x.v16))
#define je32_to_cpu(x) (le32_to_cpu(x.v32))
#define jemode_to_cpu(x) (le32_to_cpu(jffs2_to_os_mode((x).m)))
-#else
+#else
#error wibble
#endif
+/* The minimal node header size */
+#define JFFS2_MIN_NODE_HEADER sizeof(struct jffs2_raw_dirent)
+
/*
This is all we need to keep in-core for each raw node during normal
operation. As and when we do read_inode on a particular inode, we can
- scan the nodes which are listed for it and build up a proper map of
+ scan the nodes which are listed for it and build up a proper map of
which nodes are currently valid. JFFSv1 always used to keep that whole
map in core for each inode.
*/
/* flash_offset & 3 always has to be zero, because nodes are
always aligned at 4 bytes. So we have a couple of extra bits
- to play with, which indicate the node's status; see below: */
+ to play with, which indicate the node's status; see below: */
#define REF_UNCHECKED 0 /* We haven't yet checked the CRC or built its inode */
#define REF_OBSOLETE 1 /* Obsolete, can be completely ignored */
#define REF_PRISTINE 2 /* Completely clean. GC without looking */
/* For each inode in the filesystem, we need to keep a record of
nlink, because it would be a PITA to scan the whole directory tree
at read_inode() time to calculate it, and to keep sufficient information
- in the raw_node_ref (basically both parent and child inode number for
+ in the raw_node_ref (basically both parent and child inode number for
dirent nodes) would take more space than this does. We also keep
a pointer to the first physical node which is part of this inode, too.
*/
#define INO_STATE_CHECKEDABSENT 3 /* Checked, cleared again */
#define INO_STATE_GC 4 /* GCing a 'pristine' node */
#define INO_STATE_READING 5 /* In read_inode() */
+#define INO_STATE_CLEARING 6 /* In clear_inode() */
#define INOCACHE_HASHSIZE 128
/*
- Larger representation of a raw node, kept in-core only when the
+ Larger representation of a raw node, kept in-core only when the
struct inode for this particular ino is instantiated.
*/
uint32_t ofs; /* The offset to which the data of this node belongs */
uint32_t size;
uint32_t frags; /* Number of fragments which currently refer
- to this node. When this reaches zero,
+ to this node. When this reaches zero,
the node is obsolete. */
};
-/*
+/*
Even larger representation of a raw node, kept in-core only while
we're actually building up the original map of which nodes go where,
in read_inode()
*/
struct jffs2_tmp_dnode_info
{
- struct jffs2_tmp_dnode_info *next;
+ struct rb_node rb;
struct jffs2_full_dnode *fn;
uint32_t version;
-};
+ uint32_t data_crc;
+ uint32_t partial_crc;
+ uint32_t csize;
+};
struct jffs2_full_dirent
{
};
/*
- Fragments - used to build a map of which raw node to obtain
+ Fragments - used to build a map of which raw node to obtain
data from for each part of the ino
*/
struct jffs2_node_frag
struct jffs2_raw_node_ref *gc_node; /* Next node to be garbage collected */
};
-#define ACCT_SANITY_CHECK(c, jeb) do { \
- struct jffs2_eraseblock *___j = jeb; \
- if ((___j) && ___j->used_size + ___j->dirty_size + ___j->free_size + ___j->wasted_size + ___j->unchecked_size != c->sector_size) { \
- printk(KERN_NOTICE "Eeep. Space accounting for block at 0x%08x is screwed\n", ___j->offset); \
- printk(KERN_NOTICE "free 0x%08x + dirty 0x%08x + used %08x + wasted %08x + unchecked %08x != total %08x\n", \
- ___j->free_size, ___j->dirty_size, ___j->used_size, ___j->wasted_size, ___j->unchecked_size, c->sector_size); \
- BUG(); \
- } \
- if (c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size + c->wasted_size + c->unchecked_size != c->flash_size) { \
- printk(KERN_NOTICE "Eeep. Space accounting superblock info is screwed\n"); \
- printk(KERN_NOTICE "free 0x%08x + dirty 0x%08x + used %08x + erasing %08x + bad %08x + wasted %08x + unchecked %08x != total %08x\n", \
- c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size, c->wasted_size, c->unchecked_size, c->flash_size); \
- BUG(); \
- } \
-} while(0)
-
-static inline void paranoia_failed_dump(struct jffs2_eraseblock *jeb)
+static inline int jffs2_blocks_use_vmalloc(struct jffs2_sb_info *c)
{
- struct jffs2_raw_node_ref *ref;
- int i=0;
-
- printk(KERN_NOTICE);
- for (ref = jeb->first_node; ref; ref = ref->next_phys) {
- printk("%08x->", ref_offset(ref));
- if (++i == 8) {
- i = 0;
- printk("\n" KERN_NOTICE);
- }
- }
- printk("\n");
+ return ((c->flash_size / c->sector_size) * sizeof (struct jffs2_eraseblock)) > (128 * 1024);
}
-
-#define ACCT_PARANOIA_CHECK(jeb) do { \
- uint32_t my_used_size = 0; \
- uint32_t my_unchecked_size = 0; \
- struct jffs2_raw_node_ref *ref2 = jeb->first_node; \
- while (ref2) { \
- if (unlikely(ref2->flash_offset < jeb->offset || \
- ref2->flash_offset > jeb->offset + c->sector_size)) { \
- printk(KERN_NOTICE "Node %08x shouldn't be in block at %08x!\n", \
- ref_offset(ref2), jeb->offset); \
- paranoia_failed_dump(jeb); \
- BUG(); \
- } \
- if (ref_flags(ref2) == REF_UNCHECKED) \
- my_unchecked_size += ref_totlen(c, jeb, ref2); \
- else if (!ref_obsolete(ref2)) \
- my_used_size += ref_totlen(c, jeb, ref2); \
- if (unlikely((!ref2->next_phys) != (ref2 == jeb->last_node))) { \
- if (!ref2->next_phys) \
- printk("ref for node at %p (phys %08x) has next_phys->%p (----), last_node->%p (phys %08x)\n", \
- ref2, ref_offset(ref2), ref2->next_phys, \
- jeb->last_node, ref_offset(jeb->last_node)); \
- else \
- printk("ref for node at %p (phys %08x) has next_phys->%p (%08x), last_node->%p (phys %08x)\n", \
- ref2, ref_offset(ref2), ref2->next_phys, ref_offset(ref2->next_phys), \
- jeb->last_node, ref_offset(jeb->last_node)); \
- paranoia_failed_dump(jeb); \
- BUG(); \
- } \
- ref2 = ref2->next_phys; \
- } \
- if (my_used_size != jeb->used_size) { \
- printk(KERN_NOTICE "Calculated used size %08x != stored used size %08x\n", my_used_size, jeb->used_size); \
- BUG(); \
- } \
- if (my_unchecked_size != jeb->unchecked_size) { \
- printk(KERN_NOTICE "Calculated unchecked size %08x != stored unchecked size %08x\n", my_unchecked_size, jeb->unchecked_size); \
- BUG(); \
- } \
- } while(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;
-
+
if (ref->next_phys)
ref_end = ref_offset(ref->next_phys);
else {
{
uint32_t ret;
- D1(if (jeb && jeb != &c->blocks[ref->flash_offset / c->sector_size]) {
+#if CONFIG_JFFS2_FS_DEBUG > 0
+ if (jeb && jeb != &c->blocks[ref->flash_offset / c->sector_size]) {
printk(KERN_CRIT "ref_totlen called with wrong block -- at 0x%08x instead of 0x%08x; ref 0x%08x\n",
jeb->offset, c->blocks[ref->flash_offset / c->sector_size].offset, ref_offset(ref));
BUG();
- })
+ }
+#endif
#if 1
ret = ref->__totlen;
ret, ref->__totlen);
if (!jeb)
jeb = &c->blocks[ref->flash_offset / c->sector_size];
- paranoia_failed_dump(jeb);
+ jffs2_dbg_dump_node_refs_nolock(c, jeb);
BUG();
}
#endif
return ret;
}
-
#define ALLOC_NORMAL 0 /* Normal allocation */
#define ALLOC_DELETION 1 /* Deletion node. Best to allow it */
#define ALLOC_GC 2 /* Space requested for GC. Give it or die */
#define VERYDIRTY(c, size) ((size) >= ((c)->sector_size / 2))
/* check if dirty space is more than 255 Byte */
-#define ISDIRTY(size) ((size) > sizeof (struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN)
+#define ISDIRTY(size) ((size) > sizeof (struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN)
#define PAD(x) (((x)+3)&~3)
node = node->rb_left;
return rb_entry(node, struct jffs2_node_frag, rb);
}
+
+static inline struct jffs2_node_frag *frag_last(struct rb_root *root)
+{
+ struct rb_node *node = root->rb_node;
+
+ if (!node)
+ return NULL;
+ while(node->rb_right)
+ node = node->rb_right;
+ return rb_entry(node, struct jffs2_node_frag, rb);
+}
+
#define rb_parent(rb) ((rb)->rb_parent)
#define frag_next(frag) rb_entry(rb_next(&(frag)->rb), struct jffs2_node_frag, rb)
#define frag_prev(frag) rb_entry(rb_prev(&(frag)->rb), struct jffs2_node_frag, rb)
#define frag_erase(frag, list) rb_erase(&frag->rb, list);
/* nodelist.c */
-D2(void jffs2_print_frag_list(struct jffs2_inode_info *f));
void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list);
-int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
- struct jffs2_tmp_dnode_info **tnp, struct jffs2_full_dirent **fdp,
- uint32_t *highest_version, uint32_t *latest_mctime,
- uint32_t *mctime_ver);
void jffs2_set_inocache_state(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic, int state);
struct jffs2_inode_cache *jffs2_get_ino_cache(struct jffs2_sb_info *c, uint32_t ino);
void jffs2_add_ino_cache (struct jffs2_sb_info *c, struct jffs2_inode_cache *new);
void jffs2_free_raw_node_refs(struct jffs2_sb_info *c);
struct jffs2_node_frag *jffs2_lookup_node_frag(struct rb_root *fragtree, uint32_t offset);
void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c_delete);
-void jffs2_fragtree_insert(struct jffs2_node_frag *newfrag, struct jffs2_node_frag *base);
struct rb_node *rb_next(struct rb_node *);
struct rb_node *rb_prev(struct rb_node *);
void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root *root);
+void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this);
+int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn);
+void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
+int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn);
/* nodemgmt.c */
int jffs2_thread_should_wake(struct jffs2_sb_info *c);
-int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs, uint32_t *len, int prio);
-int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs, uint32_t *len);
+int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
+ uint32_t *len, int prio, uint32_t sumsize);
+int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
+ uint32_t *len, uint32_t sumsize);
int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new);
void jffs2_complete_reservation(struct jffs2_sb_info *c);
void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *raw);
-void jffs2_dump_block_lists(struct jffs2_sb_info *c);
/* write.c */
int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri);
struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const unsigned char *data, uint32_t datalen, uint32_t flash_ofs, int alloc_mode);
struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_dirent *rd, const unsigned char *name, uint32_t namelen, uint32_t flash_ofs, int alloc_mode);
int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
- struct jffs2_raw_inode *ri, unsigned char *buf,
+ struct jffs2_raw_inode *ri, unsigned char *buf,
uint32_t offset, uint32_t writelen, uint32_t *retlen);
int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const char *name, int namelen);
-int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, int namelen, struct jffs2_inode_info *dead_f);
-int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen);
+int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, int namelen, struct jffs2_inode_info *dead_f, uint32_t time);
+int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time);
/* readinode.c */
-void jffs2_truncate_fraglist (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
-int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn);
-int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
uint32_t ino, struct jffs2_raw_inode *latest_node);
int jffs2_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f);
/* scan.c */
int jffs2_scan_medium(struct jffs2_sb_info *c);
void jffs2_rotate_lists(struct jffs2_sb_info *c);
+int jffs2_fill_scan_buf(struct jffs2_sb_info *c, void *buf,
+ uint32_t ofs, uint32_t len);
+struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uint32_t ino);
+int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
/* build.c */
int jffs2_do_mount_fs(struct jffs2_sb_info *c);
/* erase.c */
void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count);
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
/* wbuf.c */
int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
#endif
+#include "debug.h"
+
#endif /* __JFFS2_NODELIST_H__ */
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