Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 45 insertions, 118 deletions

diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index b34c397909ef..23a67bb3052f 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: nodelist.h,v 1.131 2005/07/05 21:03:07 dwmw2 Exp $
+ * $Id: nodelist.h,v 1.140 2005/09/07 08:34:54 havasi Exp $
  *
  */
 
@@ -20,30 +20,15 @@
 #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
@@ -73,14 +58,17 @@
 #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.
 */
@@ -97,7 +85,7 @@ struct jffs2_raw_node_ref
 
         /* 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 */
@@ -110,7 +98,7 @@ struct jffs2_raw_node_ref
 /* 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.
 */
@@ -140,7 +128,7 @@ struct jffs2_inode_cache {
 #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.
 */
 
@@ -150,11 +138,11 @@ struct jffs2_full_dnode
         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()
@@ -164,7 +152,10 @@ struct jffs2_tmp_dnode_info
         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
 {
@@ -178,7 +169,7 @@ 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
@@ -207,86 +198,18 @@ struct jffs2_eraseblock
         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 {
@@ -306,11 +229,13 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c,
 {
         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;
@@ -323,14 +248,13 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c,
                        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 */
@@ -340,7 +264,7 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c,
 #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)
 
@@ -384,12 +308,7 @@ static inline struct jffs2_node_frag *frag_last(struct rb_root *root)
 #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 rb_root *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);
@@ -398,19 +317,23 @@ void jffs2_free_ino_caches(struct jffs2_sb_info *c);
 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);
@@ -418,17 +341,15 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
 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);
@@ -468,6 +389,10 @@ char *jffs2_getlink(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);
@@ -483,4 +408,6 @@ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_erasebloc
 int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 #endif
 
+#include "debug.h"
+
 #endif /* __JFFS2_NODELIST_H__ */