Merge [acm]time nanosecond support from 2.5.48.

fs/Kconfig

@@ -531,8 +531,8 @@ config JFFS2_FS
 	  levelling, compression and support for hard links. You cannot use
 	  this on normal block devices, only on 'MTD' devices.
 
-	  Further information should be made available soon at
-	  <http://sources.redhat.com/jffs2/>.
+	  Further information on the design and implementation of JFFS2 is
+	  available at <http://sources.redhat.com/jffs2/>.
 
 config JFFS2_FS_DEBUG
 	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
@@ -554,6 +554,19 @@ config JFFS2_FS_DEBUG
 config JFFS2_FS_NAND
 	bool "JFFS2 support for NAND flash (EXPERIMENTAL)"
 	depends on JFFS2_FS && EXPERIMENTAL
+	default n
+	---help---
+	  This enables the experimental support for NAND flash in JFFS2. NAND
+	  is a newer type of flash chip design than the traditional NOR flash,
+	  with higher density but a handful of characteristics which make it
+	  more interesting for the file system to use. Support for NAND flash
+	  is not yet complete and may corrupt data. For further information,
+	  including a link to the mailing list where details of the remaining
+	  work to be completed for NAND flash support can be found, see the 
+	  JFFS2 web site at <http://sources.redhat.com/jffs2>.
+
+	  Say 'N' unless you have NAND flash and you are willing to test and
+	  develop JFFS2 support for it.
 
 config CRAMFS
 	tristate "Compressed ROM file system support"

fs/jffs2/TODO

-$Id: TODO,v 1.9 2002/07/11 10:39:04 dwmw2 Exp $
+$Id: TODO,v 1.10 2002/09/09 16:31:21 dwmw2 Exp $
 
  - disable compression in commit_write()?
  - fine-tune the allocation / GC thresholds
@@ -23,22 +23,18 @@ $Id: TODO,v 1.9 2002/07/11 10:39:04 dwmw2 Exp $
 
  - Optimisations:
    - Stop GC from decompressing and immediately recompressing nodes which could
-     just be copied intact.
+     just be copied intact. (We now keep track of REF_PRISTINE flag. Easy now.)
    - Furthermore, in the case where it could be copied intact we don't even need
      to call iget() for it -- if we use (raw_node_raw->flash_offset & 2) as a flag
      to show a node can be copied intact and it's _not_ in icache, we could just do
      it, fix up the next_in_ino list and move on. We would need a way to find out
      _whether_ it's in icache though -- if it's in icache we also need to do the 
      fragment lists, etc. P'raps a flag or pointer in the jffs2_inode_cache could
-     help.
+     help. (We have half of this now.)
    - Stop keeping name in-core with struct jffs2_full_dirent. If we keep the hash in 
      the full dirent, we only need to go to the flash in lookup() when we think we've
      got a match, and in readdir(). 
    - Doubly-linked next_in_ino list to allow us to free obsoleted raw_node_refs immediately?
    - Remove totlen from jffs2_raw_node_ref? Need to have totlen passed into
 	jffs2_mark_node_obsolete(). Can all callers work it out?
-   - Don't check data CRC on node scan during mount. We don't really need to know 
-	yet. This means we can't build up node fragment lists, and hence can't 
-	build accurate clean/dirty information. But we don't _need_ that for reading,
-	only for writing. And in fact we don't even need it for writing until we 
-	start to need GC.
+   - Remove size from jffs2_raw_node_frag. 

fs/jffs2/background.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: background.c,v 1.29 2002/06/07 10:04:28 dwmw2 Exp $
+ * $Id: background.c,v 1.33 2002/11/12 09:44:30 dwmw2 Exp $
  *
  */
 
@@ -83,21 +83,22 @@ static int jffs2_garbage_collect_thread(void *_c)
 	struct jffs2_sb_info *c = _c;
 
 	daemonize();
+
 	c->gc_task = current;
 	up(&c->gc_thread_start);
 
-        sprintf(current->comm, "jffs2_gcd_mtd%d", c->mtd->index);
+	sprintf(current->comm, "jffs2_gcd_mtd%d", c->mtd->index);
 
 	set_user_nice(current, 10);
 
 	for (;;) {
-		spin_lock_irq(&current->sig->siglock);
+		spin_lock_irq(&current_sig_lock);
 		siginitsetinv (&current->blocked, sigmask(SIGHUP) | sigmask(SIGKILL) | sigmask(SIGSTOP) | sigmask(SIGCONT));
 		recalc_sigpending();
-		spin_unlock_irq(&current->sig->siglock);
+		spin_unlock_irq(&current_sig_lock);
 
 		if (!thread_should_wake(c)) {
-                        set_current_state (TASK_INTERRUPTIBLE);
+			set_current_state (TASK_INTERRUPTIBLE);
 			D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n"));
 			/* Yes, there's a race here; we checked thread_should_wake() before
 			   setting current->state to TASK_INTERRUPTIBLE. But it doesn't
@@ -105,30 +106,30 @@ static int jffs2_garbage_collect_thread(void *_c)
 			   is only an optimisation anyway. */
 			schedule();
 		}
-                
+
 		cond_resched();
 
-                /* Put_super will send a SIGKILL and then wait on the sem. 
-                 */
-                while (signal_pending(current)) {
-                        siginfo_t info;
-                        unsigned long signr = 0 ;
+		/* Put_super will send a SIGKILL and then wait on the sem. 
+		 */
+		while (signal_pending(current)) {
+			siginfo_t info;
+			unsigned long signr;
 
-                        spin_lock_irq(&current->sig->siglock);
+			spin_lock_irq(&current_sig_lock);
 			signr = dequeue_signal(&current->blocked, &info);
-                        spin_unlock_irq(&current->sig->siglock);
+			spin_unlock_irq(&current_sig_lock);
 
-                        switch(signr) {
-                        case SIGSTOP:
-                                D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): SIGSTOP received.\n"));
-                                set_current_state(TASK_STOPPED);
-                                schedule();
-                                break;
+			switch(signr) {
+			case SIGSTOP:
+				D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): SIGSTOP received.\n"));
+				set_current_state(TASK_STOPPED);
+				schedule();
+				break;
 
-                        case SIGKILL:
-                                D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): SIGKILL received.\n"));
+			case SIGKILL:
+				D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): SIGKILL received.\n"));
 				spin_lock_bh(&c->erase_completion_lock);
-                                c->gc_task = NULL;
+				c->gc_task = NULL;
 				spin_unlock_bh(&c->erase_completion_lock);
 				complete_and_exit(&c->gc_thread_exit, 0);
 
@@ -137,14 +138,13 @@ static int jffs2_garbage_collect_thread(void *_c)
 				break;
 			default:
 				D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): signal %ld received\n", signr));
-
-                        }
-                }
+			}
+		}
 		/* We don't want SIGHUP to interrupt us. STOP and KILL are OK though. */
-		spin_lock_irq(&current->sig->siglock);
+		spin_lock_irq(&current_sig_lock);
 		siginitsetinv (&current->blocked, sigmask(SIGKILL) | sigmask(SIGSTOP) | sigmask(SIGCONT));
 		recalc_sigpending();
-		spin_unlock_irq(&current->sig->siglock);
+		spin_unlock_irq(&current_sig_lock);
 
 		D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread(): pass\n"));
 		jffs2_garbage_collect_pass(c);
@@ -153,23 +153,20 @@ static int jffs2_garbage_collect_thread(void *_c)
 
 static int thread_should_wake(struct jffs2_sb_info *c)
 {
-	uint32_t gcnodeofs = 0;
-	int ret;
+	int ret = 0;
 
-	/* Don't count any progress we've already made through the gcblock
-	   as dirty space, for the purposes of this calculation */
-	if (c->gcblock && c->gcblock->gc_node)
-		gcnodeofs = c->gcblock->gc_node->flash_offset & ~3 & (c->sector_size-1);
+	if (c->unchecked_size) {
+		D1(printk(KERN_DEBUG "thread_should_wake(): unchecked_size %d, checked_ino #%d\n",
+			  c->unchecked_size, c->checked_ino));
+		return 1;
+	}
 
-	if (c->nr_free_blocks + c->nr_erasing_blocks < JFFS2_RESERVED_BLOCKS_GCTRIGGER &&
-	    (c->dirty_size - gcnodeofs) > c->sector_size)
+	if (c->nr_free_blocks + c->nr_erasing_blocks < JFFS2_RESERVED_BLOCKS_GCTRIGGER && 
+			(c->dirty_size > c->sector_size)) 
 		ret = 1;
-	else 
-		ret = 0;
 
-	D1(printk(KERN_DEBUG "thread_should_wake(): nr_free_blocks %d, nr_erasing_blocks %d, dirty_size 0x%x (mod 0x%x): %s\n", 
-		  c->nr_free_blocks, c->nr_erasing_blocks, c->dirty_size,
-		  c->dirty_size - gcnodeofs, ret?"yes":"no"));
+	D1(printk(KERN_DEBUG "thread_should_wake(): nr_free_blocks %d, nr_erasing_blocks %d, dirty_size 0x%x: %s\n", 
+		  c->nr_free_blocks, c->nr_erasing_blocks, c->dirty_size, ret?"yes":"no"));
 
 	return ret;
 }

fs/jffs2/build.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: build.c,v 1.35 2002/05/20 14:56:37 dwmw2 Exp $
+ * $Id: build.c,v 1.42 2002/09/09 16:29:08 dwmw2 Exp $
  *
  */
 
@@ -43,8 +43,9 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
 		return ret;
 
 	D1(printk(KERN_DEBUG "Scanned flash completely\n"));
-	/* Now build the data map for each inode, marking obsoleted nodes
-	   as such, and also increase nlink of any children. */
+	D1(jffs2_dump_block_lists(c));
+
+	/* Now scan the directory tree, increasing nlink according to every dirent found. */
 	for_each_inode(i, c, ic) {
 		D1(printk(KERN_DEBUG "Pass 1: ino #%u\n", ic->ino));
 		ret = jffs2_build_inode_pass1(c, ic);
@@ -52,8 +53,10 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
 			D1(printk(KERN_WARNING "Eep. jffs2_build_inode_pass1 for ino %d returned %d\n", ic->ino, ret));
 			return ret;
 		}
+		cond_resched();
 	}
 	D1(printk(KERN_DEBUG "Pass 1 complete\n"));
+	D1(jffs2_dump_block_lists(c));
 
 	/* Next, scan for inodes with nlink == 0 and remove them. If
 	   they were directories, then decrement the nlink of their
@@ -68,6 +71,8 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
 			if (ic->nlink)
 				continue;
 			
+			/* XXX: Can get high latency here. Move the cond_resched() from the end of the loop? */
+
 			ret = jffs2_build_remove_unlinked_inode(c, ic);
 			if (ret)
 				break;
@@ -75,115 +80,52 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
 		   and furthermore that it had children and their nlink has now
 		   gone to zero too. So we have to restart the scan. */
 		} 
-	} while(ret == -EAGAIN);
+		D1(jffs2_dump_block_lists(c));
+
+		cond_resched();
 	
+	} while(ret == -EAGAIN);
+
 	D1(printk(KERN_DEBUG "Pass 2 complete\n"));
 	
 	/* Finally, we can scan again and free the dirent nodes and scan_info structs */
 	for_each_inode(i, c, ic) {
-		struct jffs2_scan_info *scan = ic->scan;
 		struct jffs2_full_dirent *fd;
 		D1(printk(KERN_DEBUG "Pass 3: ino #%u, ic %p, nodes %p\n", ic->ino, ic, ic->nodes));
-		if (!scan) {
-			if (ic->nlink) {
-				D1(printk(KERN_WARNING "Why no scan struct for ino #%u which has nlink %d?\n", ic->ino, ic->nlink));
-			}
-			continue;
-		}
-		ic->scan = NULL;
-		while(scan->dents) {
-			fd = scan->dents;
-			scan->dents = fd->next;
+
+		while(ic->scan_dents) {
+			fd = ic->scan_dents;
+			ic->scan_dents = fd->next;
 			jffs2_free_full_dirent(fd);
 		}
-		kfree(scan);
+		ic->scan_dents = NULL;
+		cond_resched();
 	}
 	D1(printk(KERN_DEBUG "Pass 3 complete\n"));
+	D1(jffs2_dump_block_lists(c));
 
 	/* Rotate the lists by some number to ensure wear levelling */
 	jffs2_rotate_lists(c);
 
 	return ret;
 }
-	
+
 int jffs2_build_inode_pass1(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic)
 {
-	struct jffs2_tmp_dnode_info *tn;
 	struct jffs2_full_dirent *fd;
-	struct jffs2_node_frag *fraglist = NULL;
-	struct jffs2_tmp_dnode_info *metadata = NULL;
 
 	D1(printk(KERN_DEBUG "jffs2_build_inode building inode #%u\n", ic->ino));
+
 	if (ic->ino > c->highest_ino)
 		c->highest_ino = ic->ino;
 
-	if (!ic->scan->tmpnodes && ic->ino != 1) {
-		D1(printk(KERN_DEBUG "jffs2_build_inode: ino #%u has no data nodes!\n", ic->ino));
-	}
-	/* Build the list to make sure any obsolete nodes are marked as such */
-	while(ic->scan->tmpnodes) {
-		tn = ic->scan->tmpnodes;
-		ic->scan->tmpnodes = tn->next;
-		
-		if (metadata && tn->version > metadata->version) {
-			D1(printk(KERN_DEBUG "jffs2_build_inode_pass1 ignoring old metadata at 0x%08x\n",
-				  metadata->fn->raw->flash_offset &~3));
-			
-			jffs2_mark_node_obsolete(c, metadata->fn->raw);
-			jffs2_free_full_dnode(metadata->fn);
-			jffs2_free_tmp_dnode_info(metadata);
-			metadata = NULL;
-		}
-			
-		if (tn->fn->size) {
-			jffs2_add_full_dnode_to_fraglist (c, &fraglist, tn->fn);
-			jffs2_free_tmp_dnode_info(tn);
-		} else {
-			if (!metadata) {
-				metadata = tn;
-			} else {
-				/* This will only happen if it has the _same_ version
-				   number as the existing metadata node. */
-				D1(printk(KERN_DEBUG "jffs2_build_inode_pass1 ignoring new metadata at 0x%08x\n",
-					  tn->fn->raw->flash_offset &~3));
-				
-				jffs2_mark_node_obsolete(c, tn->fn->raw);
-				jffs2_free_full_dnode(tn->fn);
-				jffs2_free_tmp_dnode_info(tn);
-			}
-		}
-	}
-
-	if (ic->scan->version) {
-		/* It's a regular file, so truncate it to the last known
-		   i_size, if necessary */
-		D1(printk(KERN_DEBUG "jffs2_build_inode_pass1 truncating fraglist to 0x%08x\n", ic->scan->isize));
-		jffs2_truncate_fraglist(c, &fraglist, ic->scan->isize);
-	}
-	
-	/* OK. Now clear up */
-	if (metadata) {
-		jffs2_free_full_dnode(metadata->fn);
-		jffs2_free_tmp_dnode_info(metadata);
-	}
-	metadata = NULL;
-	
-	while (fraglist) {
-		struct jffs2_node_frag *frag;
-		frag = fraglist;
-		fraglist = fraglist->next;
-		
-		if (frag->node && !(--frag->node->frags)) {
-			jffs2_free_full_dnode(frag->node);
-		}
-		jffs2_free_node_frag(frag);
-	}
-
-	/* Now for each child, increase nlink */
-	for(fd=ic->scan->dents; fd; fd = fd->next) {
+	/* For each child, increase nlink */
+	for(fd=ic->scan_dents; fd; fd = fd->next) {
 		struct jffs2_inode_cache *child_ic;
 		if (!fd->ino)
 			continue;
+		
+		/* XXX: Can get high latency here with huge directories */
 
 		child_ic = jffs2_get_ino_cache(c, fd->ino);
 		if (!child_ic) {
@@ -212,26 +154,33 @@ int jffs2_build_remove_unlinked_inode(struct jffs2_sb_info *c, struct jffs2_inod
 	struct jffs2_full_dirent *fd;
 	int ret = 0;
 
-	if(!ic->scan) {
-		D1(printk(KERN_DEBUG "ino #%u was already removed\n", ic->ino));
-		return 0;
-	}
-
 	D1(printk(KERN_DEBUG "JFFS2: Removing ino #%u with nlink == zero.\n", ic->ino));
 	
 	for (raw = ic->nodes; raw != (void *)ic; raw = raw->next_in_ino) {
-		D1(printk(KERN_DEBUG "obsoleting node at 0x%08x\n", raw->flash_offset&~3));
+		D1(printk(KERN_DEBUG "obsoleting node at 0x%08x\n", ref_offset(raw)));
 		jffs2_mark_node_obsolete(c, raw);
 	}
 
-	if (ic->scan->dents) {
-		printk(KERN_NOTICE "Inode #%u was a directory with children - removing those too...\n", ic->ino);
-	
-		while(ic->scan->dents) {
+	if (ic->scan_dents) {
+		int whinged = 0;
+		D1(printk(KERN_DEBUG "Inode #%u was a directory which may have children...\n", ic->ino));
+
+		while(ic->scan_dents) {
 			struct jffs2_inode_cache *child_ic;
 
-			fd = ic->scan->dents;
-			ic->scan->dents = fd->next;
+			fd = ic->scan_dents;
+			ic->scan_dents = fd->next;
+
+			if (!fd->ino) {
+				/* It's a deletion dirent. Ignore it */
+				D1(printk(KERN_DEBUG "Child \"%s\" is a deletion dirent, skipping...\n", fd->name));
+				jffs2_free_full_dirent(fd);
+				continue;
+			}
+			if (!whinged) {
+				whinged = 1;
+				printk(KERN_NOTICE "Inode #%u was a directory with children - removing those too...\n", ic->ino);
+			}
 
 			D1(printk(KERN_DEBUG "Removing child \"%s\", ino #%u\n",
 				  fd->name, fd->ino));
@@ -239,6 +188,7 @@ int jffs2_build_remove_unlinked_inode(struct jffs2_sb_info *c, struct jffs2_inod
 			child_ic = jffs2_get_ino_cache(c, fd->ino);
 			if (!child_ic) {
 				printk(KERN_NOTICE "Cannot remove child \"%s\", ino #%u, because it doesn't exist\n", fd->name, fd->ino);
+				jffs2_free_full_dirent(fd);
 				continue;
 			}
 			jffs2_free_full_dirent(fd);
@@ -246,8 +196,6 @@ int jffs2_build_remove_unlinked_inode(struct jffs2_sb_info *c, struct jffs2_inod
 		}
 		ret = -EAGAIN;
 	}
-	kfree(ic->scan);
-	ic->scan = NULL;
 
 	/*
 	   We don't delete the inocache from the hash list and free it yet. 
@@ -271,6 +219,8 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c)
 		c->blocks[i].offset = i * c->sector_size;
 		c->blocks[i].free_size = c->sector_size;
 		c->blocks[i].dirty_size = 0;
+		c->blocks[i].wasted_size = 0;
+		c->blocks[i].unchecked_size = 0;
 		c->blocks[i].used_size = 0;
 		c->blocks[i].first_node = NULL;
 		c->blocks[i].last_node = NULL;

fs/jffs2/dir.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: dir.c,v 1.71 2002/07/23 17:00:45 dwmw2 Exp $
+ * $Id: dir.c,v 1.73 2002/08/26 15:00:51 dwmw2 Exp $
  *
  */
 
@@ -211,7 +211,7 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode)
 		return ret;
 	}
 
-	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = ri->ctime;
+	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = je32_to_cpu(ri->ctime);
 	dir_i->i_mtime.tv_nsec = dir_i->i_ctime.tv_nsec = 0;
 
 	jffs2_free_raw_inode(ri);
@@ -234,7 +234,8 @@ static int jffs2_unlink(struct inode *dir_i, struct dentry *dentry)
 
 	ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name, 
 			       dentry->d_name.len, dead_f);
-	dentry->d_inode->i_nlink = dead_f->inocache->nlink;
+	if (dead_f->inocache)
+		dentry->d_inode->i_nlink = dead_f->inocache->nlink;
 	return ret;
 }
 /***********************************************************************/
@@ -248,6 +249,10 @@ static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct de
 	int ret;
 	uint8_t type;
 
+	/* Don't let people make hard links to bad inodes. */
+	if (!f->inocache)
+		return -EIO;
+
 	if (S_ISDIR(old_dentry->d_inode->i_mode))
 		return -EPERM;
 
@@ -318,13 +323,14 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 
 	f = JFFS2_INODE_INFO(inode);
 
-	inode->i_size = ri->isize = ri->dsize = ri->csize = strlen(target);
-	ri->totlen = sizeof(*ri) + ri->dsize;
-	ri->hdr_crc = crc32(0, ri, sizeof(struct jffs2_unknown_node)-4);
+	inode->i_size = strlen(target);
+	ri->isize = ri->dsize = ri->csize = cpu_to_je32(inode->i_size);
+	ri->totlen = cpu_to_je32(sizeof(*ri) + inode->i_size);
+	ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
 
 	ri->compr = JFFS2_COMPR_NONE;
-	ri->data_crc = crc32(0, target, strlen(target));
-	ri->node_crc = crc32(0, ri, sizeof(*ri)-8);
+	ri->data_crc = cpu_to_je32(crc32(0, target, strlen(target)));
+	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 	
 	fn = jffs2_write_dnode(c, f, ri, target, strlen(target), phys_ofs, &writtenlen);
 
@@ -370,19 +376,19 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 	dir_f = JFFS2_INODE_INFO(dir_i);
 	down(&dir_f->sem);
 
-	rd->magic = JFFS2_MAGIC_BITMASK;
-	rd->nodetype = JFFS2_NODETYPE_DIRENT;
-	rd->totlen = sizeof(*rd) + namelen;
-	rd->hdr_crc = crc32(0, rd, sizeof(struct jffs2_unknown_node)-4);
+	rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+	rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
+	rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
+	rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
 
-	rd->pino = dir_i->i_ino;
-	rd->version = ++dir_f->highest_version;
-	rd->ino = inode->i_ino;
-	rd->mctime = get_seconds();
+	rd->pino = cpu_to_je32(dir_i->i_ino);
+	rd->version = cpu_to_je32(++dir_f->highest_version);
+	rd->ino = cpu_to_je32(inode->i_ino);
+	rd->mctime = cpu_to_je32(get_seconds());
 	rd->nsize = namelen;
 	rd->type = DT_LNK;
-	rd->node_crc = crc32(0, rd, sizeof(*rd)-8);
-	rd->name_crc = crc32(0, dentry->d_name.name, namelen);
+	rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
+	rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
 
 	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, &writtenlen);
 
@@ -396,7 +402,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 		return PTR_ERR(fd);
 	}
 
-	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = rd->mctime;
+	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = je32_to_cpu(rd->mctime);
 	dir_i->i_mtime.tv_nsec = dir_i->i_ctime.tv_nsec = 0;
 
 	jffs2_free_raw_dirent(rd);
@@ -461,8 +467,8 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 
 	f = JFFS2_INODE_INFO(inode);
 
-	ri->data_crc = 0;
-	ri->node_crc = crc32(0, ri, sizeof(*ri)-8);
+	ri->data_crc = cpu_to_je32(0);
+	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 	
 	fn = jffs2_write_dnode(c, f, ri, NULL, 0, phys_ofs, &writtenlen);
 
@@ -508,19 +514,19 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 	dir_f = JFFS2_INODE_INFO(dir_i);
 	down(&dir_f->sem);
 
-	rd->magic = JFFS2_MAGIC_BITMASK;
-	rd->nodetype = JFFS2_NODETYPE_DIRENT;
-	rd->totlen = sizeof(*rd) + namelen;
-	rd->hdr_crc = crc32(0, rd, sizeof(struct jffs2_unknown_node)-4);
+	rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+	rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
+	rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
+	rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
 
-	rd->pino = dir_i->i_ino;
-	rd->version = ++dir_f->highest_version;
-	rd->ino = inode->i_ino;
-	rd->mctime = get_seconds();
+	rd->pino = cpu_to_je32(dir_i->i_ino);
+	rd->version = cpu_to_je32(++dir_f->highest_version);
+	rd->ino = cpu_to_je32(inode->i_ino);
+	rd->mctime = cpu_to_je32(get_seconds());
 	rd->nsize = namelen;
 	rd->type = DT_DIR;
-	rd->node_crc = crc32(0, rd, sizeof(*rd)-8);
-	rd->name_crc = crc32(0, dentry->d_name.name, namelen);
+	rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
+	rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
 
 	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, &writtenlen);
 	
@@ -534,7 +540,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 		return PTR_ERR(fd);
 	}
 
-	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = rd->mctime;
+	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = je32_to_cpu(rd->mctime);
 	dir_i->i_mtime.tv_nsec = dir_i->i_ctime.tv_nsec = 0;
 	dir_i->i_nlink++;
 
@@ -617,13 +623,13 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, in
 
 	f = JFFS2_INODE_INFO(inode);
 
-	ri->dsize = ri->csize = devlen;
-	ri->totlen = sizeof(*ri) + ri->csize;
-	ri->hdr_crc = crc32(0, ri, sizeof(struct jffs2_unknown_node)-4);
+	ri->dsize = ri->csize = cpu_to_je32(devlen);
+	ri->totlen = cpu_to_je32(sizeof(*ri) + devlen);
+	ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
 
 	ri->compr = JFFS2_COMPR_NONE;
-	ri->data_crc = crc32(0, &dev, devlen);
-	ri->node_crc = crc32(0, ri, sizeof(*ri)-8);
+	ri->data_crc = cpu_to_je32(crc32(0, &dev, devlen));
+	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 	
 	fn = jffs2_write_dnode(c, f, ri, (char *)&dev, devlen, phys_ofs, &writtenlen);
 
@@ -669,22 +675,22 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, in
 	dir_f = JFFS2_INODE_INFO(dir_i);
 	down(&dir_f->sem);
 
-	rd->magic = JFFS2_MAGIC_BITMASK;
-	rd->nodetype = JFFS2_NODETYPE_DIRENT;
-	rd->totlen = sizeof(*rd) + namelen;
-	rd->hdr_crc = crc32(0, rd, sizeof(struct jffs2_unknown_node)-4);
+	rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+	rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
+	rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
+	rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
 
-	rd->pino = dir_i->i_ino;
-	rd->version = ++dir_f->highest_version;
-	rd->ino = inode->i_ino;
-	rd->mctime = get_seconds();
+	rd->pino = cpu_to_je32(dir_i->i_ino);
+	rd->version = cpu_to_je32(++dir_f->highest_version);
+	rd->ino = cpu_to_je32(inode->i_ino);
+	rd->mctime = cpu_to_je32(get_seconds());
 	rd->nsize = namelen;
 
 	/* XXX: This is ugly. */
 	rd->type = (mode & S_IFMT) >> 12;
 
-	rd->node_crc = crc32(0, rd, sizeof(*rd)-8);
-	rd->name_crc = crc32(0, dentry->d_name.name, namelen);
+	rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
+	rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
 
 	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, &writtenlen);
 	
@@ -698,7 +704,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, in
 		return PTR_ERR(fd);
 	}
 
-	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = rd->mctime;
+	dir_i->i_mtime.tv_sec = dir_i->i_ctime.tv_sec = je32_to_cpu(rd->mctime);
 	dir_i->i_mtime.tv_nsec = dir_i->i_ctime.tv_nsec = 0;
 
 	jffs2_free_raw_dirent(rd);
@@ -790,7 +796,8 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
 		struct jffs2_inode_info *f = JFFS2_INODE_INFO(old_dentry->d_inode);
 		down(&f->sem);
 		old_dentry->d_inode->i_nlink++;
-		f->inocache->nlink++;
+		if (f->inocache)
+			f->inocache->nlink++;
 		up(&f->sem);
 
 		printk(KERN_NOTICE "jffs2_rename(): Link succeeded, unlink failed (err %d). You now have a hard link\n", ret);

fs/jffs2/file.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: file.c,v 1.76 2002/07/29 08:25:35 dwmw2 Exp $
+ * $Id: file.c,v 1.81 2002/11/12 09:46:22 dwmw2 Exp $
  *
  */
 
@@ -139,41 +139,43 @@ int jffs2_setattr (struct dentry *dentry, struct iattr *iattr)
 	down(&f->sem);
 	ivalid = iattr->ia_valid;
 	
-	ri->magic = JFFS2_MAGIC_BITMASK;
-	ri->nodetype = JFFS2_NODETYPE_INODE;
-	ri->totlen = sizeof(*ri) + mdatalen;
-	ri->hdr_crc = crc32(0, ri, sizeof(struct jffs2_unknown_node)-4);
-
-	ri->ino = inode->i_ino;
-	ri->version = ++f->highest_version;
-
-	ri->mode = (ivalid & ATTR_MODE)?iattr->ia_mode:inode->i_mode;
-	ri->uid = (ivalid & ATTR_UID)?iattr->ia_uid:inode->i_uid;
-	ri->gid = (ivalid & ATTR_GID)?iattr->ia_gid:inode->i_gid;
-
-	if (ivalid & ATTR_MODE && ri->mode & S_ISGID &&
-	    !in_group_p(ri->gid) && !capable(CAP_FSETID))
-		ri->mode &= ~S_ISGID;
+	ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+	ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
+	ri->totlen = cpu_to_je32(sizeof(*ri) + mdatalen);
+	ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
+
+	ri->ino = cpu_to_je32(inode->i_ino);
+	ri->version = cpu_to_je32(++f->highest_version);
+
+	ri->uid = cpu_to_je16((ivalid & ATTR_UID)?iattr->ia_uid:inode->i_uid);
+	ri->gid = cpu_to_je16((ivalid & ATTR_GID)?iattr->ia_gid:inode->i_gid);
+
+	if (ivalid & ATTR_MODE)
+		if (iattr->ia_mode & S_ISGID &&
+		    !in_group_p(je16_to_cpu(ri->gid)) && !capable(CAP_FSETID))
+			ri->mode = cpu_to_je32(iattr->ia_mode & ~S_ISGID);
+		else 
+			ri->mode = cpu_to_je32(iattr->ia_mode);
+	else
+		ri->mode = cpu_to_je32(inode->i_mode);
 
-	ri->isize = (ivalid & ATTR_SIZE)?iattr->ia_size:inode->i_size;
-	ri->atime = (ivalid & ATTR_ATIME)?iattr->ia_atime.tv_sec:inode->i_atime.tv_sec;
-	ri->mtime = (ivalid & ATTR_MTIME)?iattr->ia_mtime.tv_sec:inode->i_mtime.tv_sec;
-	ri->ctime = (ivalid & ATTR_CTIME)?iattr->ia_ctime.tv_sec:inode->i_ctime.tv_sec;
 
-	ri->offset = 0;
-	ri->csize = ri->dsize = mdatalen;
+	ri->isize = cpu_to_je32((ivalid & ATTR_SIZE)?iattr->ia_size:inode->i_size);
+	ri->atime = cpu_to_je32((ivalid & ATTR_ATIME)?iattr->ia_atime.tv_sec:inode->i_atime.tv_sec);
+	ri->mtime = cpu_to_je32((ivalid & ATTR_MTIME)?iattr->ia_mtime.tv_sec:inode->i_mtime.tv_sec);
+	ri->ctime = cpu_to_je32((ivalid & ATTR_CTIME)?iattr->ia_ctime.tv_sec:inode->i_ctime.tv_sec);
 	ri->compr = JFFS2_COMPR_NONE;
-	if (inode->i_size < ri->isize) {
+	if (ivalid & ATTR_SIZE && inode->i_size < iattr->ia_size) {
 		/* It's an extension. Make it a hole node */
 		ri->compr = JFFS2_COMPR_ZERO;
-		ri->dsize = ri->isize - inode->i_size;
-		ri->offset = inode->i_size;
+		ri->dsize = cpu_to_je32(iattr->ia_size - inode->i_size);
+		ri->offset = cpu_to_je32(inode->i_size);
 	}
-	ri->node_crc = crc32(0, ri, sizeof(*ri)-8);
+	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 	if (mdatalen)
-		ri->data_crc = crc32(0, mdata, mdatalen);
+		ri->data_crc = cpu_to_je32(crc32(0, mdata, mdatalen));
 	else
-		ri->data_crc = 0;
+		ri->data_crc = cpu_to_je32(0);
 
 	new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, phys_ofs, NULL);
 	if (S_ISLNK(inode->i_mode))
@@ -186,27 +188,27 @@ int jffs2_setattr (struct dentry *dentry, struct iattr *iattr)
 		return PTR_ERR(new_metadata);
 	}
 	/* It worked. Update the inode */
-	inode->i_atime.tv_sec = ri->atime;
-	inode->i_ctime.tv_sec = ri->ctime;
-	inode->i_mtime.tv_sec = ri->mtime;
+	inode->i_atime = je32_to_cpu(ri->atime.tv_sec);
+	inode->i_ctime = je32_to_cpu(ri->ctime.tv_sec);
+	inode->i_mtime = je32_to_cpu(ri->mtime.tv_sec);
 	inode->i_atime.tv_nsec =
 	inode->i_ctime.tv_nsec =
 	inode->i_mtime.tv_nsec = 0;
-	inode->i_mode = ri->mode;
-	inode->i_uid = ri->uid;
-	inode->i_gid = ri->gid;
+	inode->i_mode = je32_to_cpu(ri->mode);
+	inode->i_uid = je16_to_cpu(ri->uid);
+	inode->i_gid = je16_to_cpu(ri->gid);
 
 
 	old_metadata = f->metadata;
 
-	if (inode->i_size > ri->isize) {
-		vmtruncate(inode, ri->isize);
-		jffs2_truncate_fraglist (c, &f->fraglist, ri->isize);
+	if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) {
+		vmtruncate(inode, iattr->ia_size);
+		jffs2_truncate_fraglist (c, &f->fragtree, iattr->ia_size);
 	}
 
-	if (inode->i_size < ri->isize) {
+	if (ivalid & ATTR_SIZE && inode->i_size < iattr->ia_size) {
 		jffs2_add_full_dnode_to_inode(c, f, new_metadata);
-		inode->i_size = ri->isize;
+		inode->i_size = iattr->ia_size;
 		f->metadata = NULL;
 	} else {
 		f->metadata = new_metadata;
@@ -281,7 +283,6 @@ int jffs2_prepare_write (struct file *filp, struct page *pg, unsigned start, uns
 	uint32_t pageofs = pg->index << PAGE_CACHE_SHIFT;
 	int ret = 0;
 
-	down(&f->sem);
 	D1(printk(KERN_DEBUG "jffs2_prepare_write()\n"));
 
 	if (pageofs > inode->i_size) {
@@ -295,30 +296,30 @@ int jffs2_prepare_write (struct file *filp, struct page *pg, unsigned start, uns
 			  (unsigned int)inode->i_size, pageofs));
 
 		ret = jffs2_reserve_space(c, sizeof(ri), &phys_ofs, &alloc_len, ALLOC_NORMAL);
-		if (ret) {
-			up(&f->sem);
+		if (ret)
 			return ret;
-		}
+
+		down(&f->sem);
 		memset(&ri, 0, sizeof(ri));
 
-		ri.magic = JFFS2_MAGIC_BITMASK;
-		ri.nodetype = JFFS2_NODETYPE_INODE;
-		ri.totlen = sizeof(ri);
-		ri.hdr_crc = crc32(0, &ri, sizeof(struct jffs2_unknown_node)-4);
-
-		ri.ino = f->inocache->ino;
-		ri.version = ++f->highest_version;
-		ri.mode = inode->i_mode;
-		ri.uid = inode->i_uid;
-		ri.gid = inode->i_gid;
-		ri.isize = max((uint32_t)inode->i_size, pageofs);
-		ri.atime = ri.ctime = ri.mtime = get_seconds();
-		ri.offset = inode->i_size;
-		ri.dsize = pageofs - inode->i_size;
-		ri.csize = 0;
+		ri.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+		ri.nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
+		ri.totlen = cpu_to_je32(sizeof(ri));
+		ri.hdr_crc = cpu_to_je32(crc32(0, &ri, sizeof(struct jffs2_unknown_node)-4));
+
+		ri.ino = cpu_to_je32(f->inocache->ino);
+		ri.version = cpu_to_je32(++f->highest_version);
+		ri.mode = cpu_to_je32(inode->i_mode);
+		ri.uid = cpu_to_je16(inode->i_uid);
+		ri.gid = cpu_to_je16(inode->i_gid);
+		ri.isize = cpu_to_je32(max((uint32_t)inode->i_size, pageofs));
+		ri.atime = ri.ctime = ri.mtime = cpu_to_je32(get_seconds());
+		ri.offset = cpu_to_je32(inode->i_size);
+		ri.dsize = cpu_to_je32(pageofs - inode->i_size);
+		ri.csize = cpu_to_je32(0);
 		ri.compr = JFFS2_COMPR_ZERO;
-		ri.node_crc = crc32(0, &ri, sizeof(ri)-8);
-		ri.data_crc = 0;
+		ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
+		ri.data_crc = cpu_to_je32(0);
 		
 		fn = jffs2_write_dnode(c, f, &ri, NULL, 0, phys_ofs, NULL);
 
@@ -344,14 +345,16 @@ int jffs2_prepare_write (struct file *filp, struct page *pg, unsigned start, uns
 		}
 		jffs2_complete_reservation(c);
 		inode->i_size = pageofs;
+		up(&f->sem);
 	}
 	
-
-	/* Read in the page if it wasn't already present */
-	if (!PageUptodate(pg) && (start || end < PAGE_SIZE))
+	/* Read in the page if it wasn't already present, unless it's a whole page */
+	if (!PageUptodate(pg) && (start || end < PAGE_CACHE_SIZE)) {
+		down(&f->sem);
 		ret = jffs2_do_readpage_nolock(inode, pg);
-	D1(printk(KERN_DEBUG "end prepare_write()\n"));
-	up(&f->sem);
+		up(&f->sem);
+	}
+	D1(printk(KERN_DEBUG "end prepare_write(). pg->flags %lx\n", pg->flags));
 	return ret;
 }
 
@@ -367,8 +370,16 @@ int jffs2_commit_write (struct file *filp, struct page *pg, unsigned start, unsi
 	int ret = 0;
 	uint32_t writtenlen = 0;
 
-	D1(printk(KERN_DEBUG "jffs2_commit_write(): ino #%lu, page at 0x%lx, range %d-%d\n",
-		  inode->i_ino, pg->index << PAGE_CACHE_SHIFT, start, end));
+	D1(printk(KERN_DEBUG "jffs2_commit_write(): ino #%lu, page at 0x%lx, range %d-%d, flags %lx\n",
+		  inode->i_ino, pg->index << PAGE_CACHE_SHIFT, start, end, pg->flags));
+
+	if (!start && end == PAGE_CACHE_SIZE) {
+		/* We need to avoid deadlock with page_cache_read() in
+		   jffs2_garbage_collect_pass(). So we have to mark the
+		   page up to date, to prevent page_cache_read() from 
+		   trying to re-lock it. */
+		SetPageUptodate(pg);
+	}
 
 	ri = jffs2_alloc_raw_inode();
 
@@ -378,16 +389,21 @@ int jffs2_commit_write (struct file *filp, struct page *pg, unsigned start, unsi
 	}
 
 	/* Set the fields that the generic jffs2_write_inode_range() code can't find */
-	ri->ino = inode->i_ino;
-	ri->mode = inode->i_mode;
-	ri->uid = inode->i_uid;
-	ri->gid = inode->i_gid;
-	ri->isize = (uint32_t)inode->i_size;
-	ri->atime = ri->ctime = ri->mtime = get_seconds();
-
+	ri->ino = cpu_to_je32(inode->i_ino);
+	ri->mode = cpu_to_je32(inode->i_mode);
+	ri->uid = cpu_to_je16(inode->i_uid);
+	ri->gid = cpu_to_je16(inode->i_gid);
+	ri->isize = cpu_to_je32((uint32_t)inode->i_size);
+	ri->atime = ri->ctime = ri->mtime = cpu_to_je32(get_seconds());
+
+	/* In 2.4, it was already kmapped by generic_file_write(). Doesn't
+	   hurt to do it again. The alternative is ifdefs, which are ugly. */
 	kmap(pg);
+
 	ret = jffs2_write_inode_range(c, f, ri, page_address(pg) + start,
-				      (pg->index << PAGE_CACHE_SHIFT) + start, end - start, &writtenlen);
+				      (pg->index << PAGE_CACHE_SHIFT) + start,
+				      end - start, &writtenlen);
+
 	kunmap(pg);
 
 	if (ret) {
@@ -400,7 +416,7 @@ int jffs2_commit_write (struct file *filp, struct page *pg, unsigned start, unsi
 			inode->i_size = (pg->index << PAGE_CACHE_SHIFT) + start + writtenlen;
 			inode->i_blocks = (inode->i_size + 511) >> 9;
 			
-			inode->i_ctime.tv_sec = inode->i_mtime.tv_sec = ri->ctime;
+			inode->i_ctime.tv_sec = inode->i_mtime.tv_sec = je32_to_cpu(ri->ctime);
 			inode->i_ctime.tv_nsec = inode->i_mtime.tv_nsec = 0;
 		}
 	}

fs/jffs2/fs.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: fs.c,v 1.13 2002/07/02 22:48:24 dwmw2 Exp $
+ * $Id: fs.c,v 1.19 2002/11/12 09:53:40 dwmw2 Exp $
  *
  */
 
@@ -86,15 +86,15 @@ void jffs2_read_inode (struct inode *inode)
 		up(&f->sem);
 		return;
 	}
-	inode->i_mode = latest_node.mode;
-	inode->i_uid = latest_node.uid;
-	inode->i_gid = latest_node.gid;
-	inode->i_size = latest_node.isize;
-	inode->i_atime.tv_sec = latest_node.atime;
-	inode->i_mtime.tv_sec = latest_node.mtime;
-	inode->i_ctime.tv_sec = latest_node.ctime;
-	inode->i_atime.tv_nsec = 
-	inode->i_mtime.tv_nsec = 
+	inode->i_mode = je32_to_cpu(latest_node.mode);
+	inode->i_uid = je16_to_cpu(latest_node.uid);
+	inode->i_gid = je16_to_cpu(latest_node.gid);
+	inode->i_size = je32_to_cpu(latest_node.isize);
+	inode->i_atime = je32_to_cpu(latest_node.atime);
+	inode->i_mtime = je32_to_cpu(latest_node.mtime);
+	inode->i_ctime = je32_to_cpu(latest_node.ctime);
+	inode->i_atime.tv_nsec =
+	inode->i_mtime.tv_nsec =
 	inode->i_ctime.tv_nsec = 0;
 
 	inode->i_nlink = f->inocache->nlink;
@@ -192,19 +192,9 @@ void jffs2_write_super (struct super_block *sb)
 	if (sb->s_flags & MS_RDONLY)
 		return;
 
-	D1(printk(KERN_DEBUG "jffs2_write_super(): flush_wbuf before gc-trigger\n"));
+	D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
 	jffs2_garbage_collect_trigger(c);
 	jffs2_erase_pending_blocks(c);
-	jffs2_mark_erased_blocks(c);
-	/* Eep. If we lock this here, we deadlock with jffs2_reserve_space() when
-	 * it locks the alloc_sem and jffs2_do_reserve_space() waits for erases
-	 * to happen. I think the erases and/or the flush_wbuf want doing from
-	 *
-	 */
-	if (!down_trylock(&c->alloc_sem)) {
-		jffs2_flush_wbuf(c, 2);
-		up(&c->alloc_sem);
-	} // else it stays dirty. FIXME.
 }
 
 
@@ -232,16 +222,16 @@ struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_i
 
 	memset(ri, 0, sizeof(*ri));
 	/* Set OS-specific defaults for new inodes */
-	ri->uid = current->fsuid;
+	ri->uid = cpu_to_je16(current->fsuid);
 
 	if (dir_i->i_mode & S_ISGID) {
-		ri->gid = dir_i->i_gid;
+		ri->gid = cpu_to_je16(dir_i->i_gid);
 		if (S_ISDIR(mode))
-			ri->mode |= S_ISGID;
+			mode |= S_ISGID;
 	} else {
-		ri->gid = current->fsgid;
+		ri->gid = cpu_to_je16(current->fsgid);
 	}
-	ri->mode = mode;
+	ri->mode =  cpu_to_je32(mode);
 	ret = jffs2_do_new_inode (c, f, mode, ri);
 	if (ret) {
 		make_bad_inode(inode);
@@ -249,12 +239,14 @@ struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_i
 		return ERR_PTR(ret);
 	}
 	inode->i_nlink = 1;
-	inode->i_ino = ri->ino;
-	inode->i_mode = ri->mode;
-	inode->i_gid = ri->gid;
-	inode->i_uid = ri->uid;
-	inode->i_atime = inode->i_ctime = inode->i_mtime = 
-		ri->atime = ri->mtime = ri->ctime = get_seconds();
+	inode->i_ino = je32_to_cpu(ri->ino);
+	inode->i_mode = je32_to_cpu(ri->mode);
+	inode->i_gid = je16_to_cpu(ri->gid);
+	inode->i_uid = je16_to_cpu(ri->uid);
+	inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec = inode->i_mtime.tv_nsec = 0;
+	inode->i_atime.tv_sec = inode->i_ctime.tv_sec = inode->i_mtime.tv_sec = get_seconds();
+	ri->atime = ri->mtime = ri->ctime = cpu_to_je32(inode->i_mtime.tv_sec);
+
 	inode->i_blksize = PAGE_SIZE;
 	inode->i_blocks = 0;
 	inode->i_size = 0;
@@ -305,9 +297,10 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 		if (!c->wbuf)
 			return -ENOMEM;
 
-		/* Initialize process for timed wbuf flush */
+		/* Initialise process for timed wbuf flush */
 		INIT_WORK(&c->wbuf_task,(void*) jffs2_wbuf_process, (void *)c);
-		/* Initialize timer for timed wbuf flush */
+
+		/* Initialise timer for timed wbuf flush */
 		init_timer(&c->wbuf_timer);
 		c->wbuf_timer.function = jffs2_wbuf_timeout;
 		c->wbuf_timer.data = (unsigned long) c;

fs/jffs2/nodelist.h

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: nodelist.h,v 1.74 2002/06/26 01:20:43 dwmw2 Exp $
+ * $Id: nodelist.h,v 1.87 2002/11/12 13:36:18 dwmw2 Exp $
  *
  */
 
@@ -53,16 +53,22 @@ struct jffs2_raw_node_ref
 		for this inode instead. The inode_cache will have NULL in the first
 		word so you know when you've got there :) */
 	struct jffs2_raw_node_ref *next_phys;
-	//	uint32_t ino;
 	uint32_t flash_offset;
 	uint32_t totlen;
-//	uint16_t nodetype;
 	
         /* 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. So we set the least significant bit to 1 to
 	   signify that the node is obsoleted by later nodes.
 	*/
+#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 */
+#define REF_NORMAL	3	/* Possibly overlapped. Read the page and write again on GC */
+#define ref_flags(ref)		((ref)->flash_offset & 3)
+#define ref_offset(ref)		((ref)->flash_offset & ~3)
+#define ref_obsolete(ref)	(((ref)->flash_offset & 3) == REF_OBSOLETE)
+#define mark_ref_normal(ref)    do { (ref)->flash_offset = ref_offset(ref) | REF_NORMAL; } while(0)
 };
 
 /* 
@@ -83,14 +89,20 @@ struct jffs2_raw_node_ref_list {
    a pointer to the first physical node which is part of this inode, too.
 */
 struct jffs2_inode_cache {
-	struct jffs2_scan_info *scan; /* Used during scan to hold
-		temporary lists of nodes, and later must be set to
+	struct jffs2_full_dirent *scan_dents; /* Used during scan to hold
+		temporary lists of dirents, and later must be set to
 		NULL to mark the end of the raw_node_ref->next_in_ino
 		chain. */
 	struct jffs2_inode_cache *next;
 	struct jffs2_raw_node_ref *nodes;
 	uint32_t ino;
 	int nlink;
+	int state;
+#define INO_STATE_UNCHECKED 0
+#define INO_STATE_CHECKING 1
+#define INO_STATE_CHECKEDABSENT 2
+#define INO_STATE_READINGINODE 3
+#define INO_STATE_PRESENT 5
 };
 
 #define INOCACHE_HASHSIZE 128
@@ -146,7 +158,7 @@ struct jffs2_full_dirent
 */
 struct jffs2_node_frag
 {
-	struct jffs2_node_frag *next;
+	struct rb_node rb;
 	struct jffs2_full_dnode *node; /* NULL for holes */
 	uint32_t size;
 	uint32_t ofs; /* Don't really need this, but optimisation */
@@ -158,8 +170,10 @@ struct jffs2_eraseblock
 	int bad_count;
 	uint32_t offset;		/* of this block in the MTD */
 
+	uint32_t unchecked_size;
 	uint32_t used_size;
 	uint32_t dirty_size;
+	uint32_t wasted_size;
 	uint32_t free_size;	/* Note that sector_size - free_size
 				   is the address of the first free space */
 	struct jffs2_raw_node_ref *first_node;
@@ -177,25 +191,28 @@ struct jffs2_eraseblock
 };
 
 #define ACCT_SANITY_CHECK(c, jeb) do { \
-	if (jeb->used_size + jeb->dirty_size + jeb->free_size != c->sector_size) { \
+	if (jeb->used_size + jeb->dirty_size + jeb->free_size + jeb->wasted_size + jeb->unchecked_size != c->sector_size) { \
 		printk(KERN_NOTICE "Eeep. Space accounting for block at 0x%08x is screwed\n", jeb->offset); \
-		printk(KERN_NOTICE "free 0x%08x + dirty 0x%08x + used %08x != total %08x\n", \
-		jeb->free_size, jeb->dirty_size, jeb->used_size, c->sector_size); \
+		printk(KERN_NOTICE "free 0x%08x + dirty 0x%08x + used %08x + wasted %08x + unchecked %08x != total %08x\n", \
+		jeb->free_size, jeb->dirty_size, jeb->used_size, jeb->wasted_size, jeb->unchecked_size, c->sector_size); \
 		BUG(); \
 	} \
-	if (c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size != c->flash_size) { \
+	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 != total %08x\n", \
-		c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size, c->flash_size); \
+		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)
 
 #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 (!(ref2->flash_offset & 1)) \
+			if (ref_flags(ref2) == REF_UNCHECKED) \
+				my_unchecked_size += ref2->totlen; \
+			else if (!ref_obsolete(ref2)) \
 				my_used_size += ref2->totlen; \
 			ref2 = ref2->next_phys; \
 		} \
@@ -203,6 +220,10 @@ struct jffs2_eraseblock
 			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)
 
 #define ALLOC_NORMAL	0	/* Normal allocation */
@@ -211,7 +232,7 @@ struct jffs2_eraseblock
 
 #define JFFS2_RESERVED_BLOCKS_BASE 3						/* Number of free blocks there must be before we... */
 #define JFFS2_RESERVED_BLOCKS_WRITE (JFFS2_RESERVED_BLOCKS_BASE + 2)		/* ... allow a normal filesystem write */
-#define JFFS2_RESERVED_BLOCKS_DELETION (JFFS2_RESERVED_BLOCKS_BASE + 1)		/* ... allow a normal filesystem deletion */
+#define JFFS2_RESERVED_BLOCKS_DELETION (JFFS2_RESERVED_BLOCKS_BASE)		/* ... allow a normal filesystem deletion */
 #define JFFS2_RESERVED_BLOCKS_GCTRIGGER (JFFS2_RESERVED_BLOCKS_BASE + 3)	/* ... wake up the GC thread */
 #define JFFS2_RESERVED_BLOCKS_GCBAD (JFFS2_RESERVED_BLOCKS_BASE + 1)		/* ... pick a block from the bad_list to GC */
 #define JFFS2_RESERVED_BLOCKS_GCMERGE (JFFS2_RESERVED_BLOCKS_BASE)		/* ... merge pages when garbage collecting */
@@ -220,6 +241,9 @@ struct jffs2_eraseblock
 /* How much dirty space before it goes on the very_dirty_list */
 #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 PAD(x) (((x)+3)&~3)
 
 static inline int jffs2_raw_ref_to_inum(struct jffs2_raw_node_ref *raw)
@@ -231,6 +255,24 @@ static inline int jffs2_raw_ref_to_inum(struct jffs2_raw_node_ref *raw)
 	return ((struct jffs2_inode_cache *)raw)->ino;
 }
 
+static inline struct jffs2_node_frag *frag_first(struct rb_root *root)
+{
+	struct rb_node *node = root->rb_node;
+
+	if (!node)
+		return NULL;
+	while(node->rb_left)
+		node = node->rb_left;
+	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_parent(frag) rb_entry(rb_parent(&(frag)->rb), struct jffs2_node_frag, rb)
+#define frag_left(frag) rb_entry((frag)->rb.rb_left, struct jffs2_node_frag, rb)
+#define frag_right(frag) rb_entry((frag)->rb.rb_right, struct jffs2_node_frag, rb)
+#define frag_erase(frag, list) rb_erase(&frag->rb, list);
+
 /* nodelist.c */
 D1(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);
@@ -244,11 +286,17 @@ void jffs2_add_ino_cache (struct jffs2_sb_info *c, struct jffs2_inode_cache *new
 void jffs2_del_ino_cache(struct jffs2_sb_info *c, struct jffs2_inode_cache *old);
 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);
 
 /* nodemgmt.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_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new, uint32_t len, int dirty);
+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);
@@ -266,8 +314,8 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
 
 
 /* readinode.c */
-void jffs2_truncate_fraglist (struct jffs2_sb_info *c, struct jffs2_node_frag **list, uint32_t size);
-int jffs2_add_full_dnode_to_fraglist(struct jffs2_sb_info *c, struct jffs2_node_frag **list, struct jffs2_full_dnode *fn);
+void jffs2_truncate_fraglist (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
+int jffs2_add_full_dnode_to_fraglist(struct jffs2_sb_info *c, struct rb_root *list, struct jffs2_full_dnode *fn);
 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, 
 			uint32_t ino, struct jffs2_raw_inode *latest_node);
@@ -320,7 +368,6 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c);
 /* erase.c */
 void jffs2_erase_block(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 void jffs2_erase_pending_blocks(struct jffs2_sb_info *c);
-void jffs2_mark_erased_blocks(struct jffs2_sb_info *c);
 void jffs2_erase_pending_trigger(struct jffs2_sb_info *c);
 
 #ifdef CONFIG_JFFS2_FS_NAND

fs/jffs2/os-linux.h

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: os-linux.h,v 1.19 2002/05/20 14:56:38 dwmw2 Exp $
+ * $Id: os-linux.h,v 1.21 2002/11/12 09:44:30 dwmw2 Exp $
  *
  */
 
@@ -49,11 +49,19 @@
 #define JFFS2_F_I_RDEV_MAJ(f) (MAJOR(to_kdev_t(OFNI_EDONI_2SFFJ(f)->i_rdev)))
 #endif
 
+/* Hmmm. P'raps generic code should only ever see versions of signal
+   functions which do the locking automatically? */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,40)
+#define current_sig_lock current->sigmask_lock
+#else
+#define current_sig_lock current->sig->siglock
+#endif
+
 static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 {
 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,2)
 	f->highest_version = 0;
-	f->fraglist = NULL;
+	f->fragtree = RB_ROOT;
 	f->metadata = NULL;
 	f->dents = NULL;
 	f->flags = 0;

fs/jffs2/read.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: read.c,v 1.23 2002/05/20 14:56:38 dwmw2 Exp $
+ * $Id: read.c,v 1.29 2002/11/12 09:51:22 dwmw2 Exp $
  *
  */
 
@@ -31,35 +31,41 @@ int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_full_dnode *fd, unsig
 	if (!ri)
 		return -ENOMEM;
 
-	ret = jffs2_flash_read(c, fd->raw->flash_offset & ~3, sizeof(*ri), &readlen, (char *)ri);
+	ret = jffs2_flash_read(c, ref_offset(fd->raw), sizeof(*ri), &readlen, (char *)ri);
 	if (ret) {
 		jffs2_free_raw_inode(ri);
-		printk(KERN_WARNING "Error reading node from 0x%08x: %d\n", fd->raw->flash_offset & ~3, ret);
+		printk(KERN_WARNING "Error reading node from 0x%08x: %d\n", ref_offset(fd->raw), ret);
 		return ret;
 	}
 	if (readlen != sizeof(*ri)) {
 		jffs2_free_raw_inode(ri);
 		printk(KERN_WARNING "Short read from 0x%08x: wanted 0x%x bytes, got 0x%x\n", 
-		       fd->raw->flash_offset & ~3, sizeof(*ri), readlen);
+		       ref_offset(fd->raw), sizeof(*ri), readlen);
 		return -EIO;
 	}
 	crc = crc32(0, ri, sizeof(*ri)-8);
 
-	D1(printk(KERN_DEBUG "Node read from %08x: node_crc %08x, calculated CRC %08x. dsize %x, csize %x, offset %x, buf %p\n", fd->raw->flash_offset & ~3, ri->node_crc, crc, ri->dsize, ri->csize, ri->offset, buf));
-	if (crc != ri->node_crc) {
-		printk(KERN_WARNING "Node CRC %08x != calculated CRC %08x for node at %08x\n", ri->node_crc, crc, fd->raw->flash_offset & ~3);
+	D1(printk(KERN_DEBUG "Node read from %08x: node_crc %08x, calculated CRC %08x. dsize %x, csize %x, offset %x, buf %p\n",
+		  ref_offset(fd->raw), je32_to_cpu(ri->node_crc),
+		  crc, je32_to_cpu(ri->dsize), je32_to_cpu(ri->csize),
+		  je32_to_cpu(ri->offset), buf));
+	if (crc != je32_to_cpu(ri->node_crc)) {
+		printk(KERN_WARNING "Node CRC %08x != calculated CRC %08x for node at %08x\n",
+		       je32_to_cpu(ri->node_crc), crc, ref_offset(fd->raw));
 		ret = -EIO;
 		goto out_ri;
 	}
 	/* There was a bug where we wrote hole nodes out with csize/dsize
 	   swapped. Deal with it */
-	if (ri->compr == JFFS2_COMPR_ZERO && !ri->dsize && ri->csize) {
+	if (ri->compr == JFFS2_COMPR_ZERO && !je32_to_cpu(ri->dsize) && 
+	    je32_to_cpu(ri->csize)) {
 		ri->dsize = ri->csize;
-		ri->csize = 0;
+		ri->csize = cpu_to_je32(0);
 	}
 
-	D1(if(ofs + len > ri->dsize) {
-		printk(KERN_WARNING "jffs2_read_dnode() asked for %d bytes at %d from %d-byte node\n", len, ofs, ri->dsize);
+	D1(if(ofs + len > je32_to_cpu(ri->dsize)) {
+		printk(KERN_WARNING "jffs2_read_dnode() asked for %d bytes at %d from %d-byte node\n",
+		       len, ofs, je32_to_cpu(ri->dsize));
 		ret = -EINVAL;
 		goto out_ri;
 	});
@@ -76,18 +82,18 @@ int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_full_dnode *fd, unsig
 	   Reading partial node and it's uncompressed - read into readbuf, check CRC, and copy 
 	   Reading partial node and it's compressed - read into readbuf, check checksum, decompress to decomprbuf and copy
 	*/
-	if (ri->compr == JFFS2_COMPR_NONE && len == ri->dsize) {
+	if (ri->compr == JFFS2_COMPR_NONE && len == je32_to_cpu(ri->dsize)) {
 		readbuf = buf;
 	} else {
-		readbuf = kmalloc(ri->csize, GFP_KERNEL);
+		readbuf = kmalloc(je32_to_cpu(ri->csize), GFP_KERNEL);
 		if (!readbuf) {
 			ret = -ENOMEM;
 			goto out_ri;
 		}
 	}
 	if (ri->compr != JFFS2_COMPR_NONE) {
-		if (len < ri->dsize) {
-			decomprbuf = kmalloc(ri->dsize, GFP_KERNEL);
+		if (len < je32_to_cpu(ri->dsize)) {
+			decomprbuf = kmalloc(je32_to_cpu(ri->dsize), GFP_KERNEL);
 			if (!decomprbuf) {
 				ret = -ENOMEM;
 				goto out_readbuf;
@@ -99,31 +105,35 @@ int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_full_dnode *fd, unsig
 		decomprbuf = readbuf;
 	}
 
-	D2(printk(KERN_DEBUG "Read %d bytes to %p\n", ri->csize, readbuf));
-	ret = jffs2_flash_read(c, (fd->raw->flash_offset &~3) + sizeof(*ri), ri->csize, &readlen, readbuf);
+	D2(printk(KERN_DEBUG "Read %d bytes to %p\n", je32_to_cpu(ri->csize),
+		  readbuf));
+	ret = jffs2_flash_read(c, (ref_offset(fd->raw)) + sizeof(*ri),
+			       je32_to_cpu(ri->csize), &readlen, readbuf);
 
-	if (!ret && readlen != ri->csize)
+	if (!ret && readlen != je32_to_cpu(ri->csize))
 		ret = -EIO;
 	if (ret)
 		goto out_decomprbuf;
 
-	crc = crc32(0, readbuf, ri->csize);
-	if (crc != ri->data_crc) {
-		printk(KERN_WARNING "Data CRC %08x != calculated CRC %08x for node at %08x\n", ri->data_crc, crc, fd->raw->flash_offset & ~3);
+	crc = crc32(0, readbuf, je32_to_cpu(ri->csize));
+	if (crc != je32_to_cpu(ri->data_crc)) {
+		printk(KERN_WARNING "Data CRC %08x != calculated CRC %08x for node at %08x\n",
+		       je32_to_cpu(ri->data_crc), crc, ref_offset(fd->raw));
 		ret = -EIO;
 		goto out_decomprbuf;
 	}
 	D2(printk(KERN_DEBUG "Data CRC matches calculated CRC %08x\n", crc));
 	if (ri->compr != JFFS2_COMPR_NONE) {
-		D2(printk(KERN_DEBUG "Decompress %d bytes from %p to %d bytes at %p\n", ri->csize, readbuf, ri->dsize, decomprbuf)); 
-		ret = jffs2_decompress(ri->compr, readbuf, decomprbuf, ri->csize, ri->dsize);
+		D2(printk(KERN_DEBUG "Decompress %d bytes from %p to %d bytes at %p\n",
+			  je32_to_cpu(ri->csize), readbuf, je32_to_cpu(ri->dsize), decomprbuf)); 
+		ret = jffs2_decompress(ri->compr, readbuf, decomprbuf, je32_to_cpu(ri->csize), je32_to_cpu(ri->dsize));
 		if (ret) {
 			printk(KERN_WARNING "Error: jffs2_decompress returned %d\n", ret);
 			goto out_decomprbuf;
 		}
 	}
 
-	if (len < ri->dsize) {
+	if (len < je32_to_cpu(ri->dsize)) {
 		memcpy(buf, decomprbuf+ofs, len);
 	}
  out_decomprbuf:
@@ -142,16 +152,14 @@ int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 			   unsigned char *buf, uint32_t offset, uint32_t len)
 {
 	uint32_t end = offset + len;
-	struct jffs2_node_frag *frag = f->fraglist;
+	struct jffs2_node_frag *frag;
 	int ret;
 
 	D1(printk(KERN_DEBUG "jffs2_read_inode_range: ino #%u, range 0x%08x-0x%08x\n",
 		  f->inocache->ino, offset, offset+len));
 
-	while(frag && frag->ofs + frag->size  <= offset) {
-		D2(printk(KERN_DEBUG "skipping frag %d-%d; before the region we care about\n", frag->ofs, frag->ofs + frag->size));
-		frag = frag->next;
-	}
+	frag = jffs2_lookup_node_frag(&f->fragtree, offset);
+
 	/* XXX FIXME: Where a single physical node actually shows up in two
 	   frags, we read it twice. Don't do that. */
 	/* Now we're pointing at the first frag which overlaps our page */
@@ -181,24 +189,28 @@ int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 			memset(buf, 0, holeend - offset);
 			buf += holeend - offset;
 			offset = holeend;
-			frag = frag->next;
+			frag = frag_next(frag);
 			continue;
 		} else {
 			uint32_t readlen;
-			readlen = min(frag->size, end - offset);
-			D1(printk(KERN_DEBUG "Reading %d-%d from node at 0x%x\n", frag->ofs, frag->ofs+readlen, frag->node->raw->flash_offset & ~3));
-			ret = jffs2_read_dnode(c, frag->node, buf, frag->ofs - frag->node->ofs, readlen);
+			uint32_t fragofs; /* offset within the frag to start reading */
+			
+			fragofs = offset - frag->ofs;
+			readlen = min(frag->size - fragofs, end - offset);
+			D1(printk(KERN_DEBUG "Reading %d-%d from node at 0x%x\n", frag->ofs+fragofs, frag->ofs+fragofs+readlen, 
+				  ref_offset(frag->node->raw)));
+			ret = jffs2_read_dnode(c, frag->node, buf, fragofs + frag->ofs - frag->node->ofs, readlen);
 			D2(printk(KERN_DEBUG "node read done\n"));
 			if (ret) {
 				D1(printk(KERN_DEBUG"jffs2_read_inode_range error %d\n",ret));
-				memset(buf, 0, frag->size);
+				memset(buf, 0, readlen);
 				return ret;
 			}
+			buf += readlen;
+			offset += readlen;
+			frag = frag_next(frag);
+			D2(printk(KERN_DEBUG "node read was OK. Looping\n"));
 		}
-		buf += frag->size;
-		offset += frag->size;
-		frag = frag->next;
-		D2(printk(KERN_DEBUG "node read was OK. Looping\n"));
 	}
 	return 0;
 }

fs/jffs2/super.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: super.c,v 1.73 2002/07/23 17:00:45 dwmw2 Exp $
+ * $Id: super.c,v 1.74 2002/11/12 09:37:39 dwmw2 Exp $
  *
  */
 

fs/jffs2/wbuf.c

@@ -7,8 +7,9 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: wbuf.c,v 1.12 2002/05/20 14:56:39 dwmw2 Exp $
- * -- with the NAND definitions added back pending MTD update for 2.5.
+ * $Id: wbuf.c,v 1.20 2002/11/12 11:33:02 dwmw2 Exp $
+ * + some of the dependencies on later MTD NAND code temporarily reverted.
+ *
  */
 
 #include <linux/kernel.h>
@@ -16,17 +17,22 @@
 #include <linux/mtd/mtd.h>
 #include <linux/interrupt.h>
 #include <linux/crc32.h>
+#include <linux/mtd/nand.h>
 #include "nodelist.h"
 
 /* FIXME duplicated defines in wbuf.c and nand.c
  * Constants for out of band layout
  */
+#ifndef NAND_BADBLOCK_POS
+#define NAND_BADBLOCK_POS		5
+#endif
+#ifndef NAND_JFFS2_OOB_BADBPOS
 #define NAND_JFFS2_OOB_BADBPOS		5
 #define NAND_JFFS2_OOB8_FSDAPOS		6
 #define NAND_JFFS2_OOB16_FSDAPOS	8
 #define NAND_JFFS2_OOB8_FSDALEN		2
 #define NAND_JFFS2_OOB16_FSDALEN	8
-
+#endif
 
 /* max. erase failures before we mark a block bad */
 #define MAX_ERASE_FAILURES 	5
@@ -88,18 +94,40 @@ void jffs2_wbuf_process (void *data)
 	struct jffs2_sb_info *c = (struct jffs2_sb_info *) data;	
 	
 	D1(printk(KERN_DEBUG "jffs2_wbuf_process() entered\n"));
-
-	if (!down_trylock(&c->alloc_sem)) {
-		D1(printk (KERN_DEBUG "jffs2_wbuf_process() alloc_sem got\n"));
 	
-		if(!c->nextblock || (c->nextblock->free_size < (c->wbuf_pagesize - c->wbuf_len)))
-			jffs2_flush_wbuf(c, 1); /* pad only */
-		else			
-			jffs2_flush_wbuf(c, 2); /* pad and adjust nextblock */
-		up(&c->alloc_sem);
-	} else {
+	/* Check, if the timer is active again */
+	if (timer_pending (&c->wbuf_timer)) {
+		D1(printk (KERN_DEBUG "Nothing to do, timer is active again\n"));
+		return;
+	}
+
+	if (down_trylock(&c->alloc_sem)) {
+		/* If someone else has the alloc_sem, they're about to
+		   write anyway. So no need to waste space by
+		   padding */
 		D1(printk (KERN_DEBUG "jffs2_wbuf_process() alloc_sem already occupied\n"));
+		return;
 	}	
+
+	D1(printk (KERN_DEBUG "jffs2_wbuf_process() alloc_sem got\n"));
+
+	if (!c->nextblock) {
+		D1(printk(KERN_DEBUG "jffs2_wbuf_process(): nextblock NULL, nothing to do\n"));
+		if (c->wbuf_len) {
+			printk(KERN_WARNING "jffs2_wbuf_process(): c->wbuf_len is 0x%03x but nextblock is NULL!\n", c->wbuf_len);
+			up(&c->alloc_sem);
+			BUG();
+		}
+		return;
+	}
+	
+	
+	/* if !c->nextblock then the tail will have got flushed from
+	   jffs2_do_reserve_space() anyway. */
+	if(c->nextblock)
+		jffs2_flush_wbuf(c, 2); /* pad and adjust nextblock */
+
+	up(&c->alloc_sem);
 }
 
 
@@ -112,7 +140,12 @@ int jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
 {
 	int ret;
 	size_t retlen;
-	
+
+	/* Nothing to do if not NAND flash. In particular, we shouldn't
+	   del_timer() the timer we never initialised. */
+	if (jffs2_can_mark_obsolete(c))
+		return 0;
+
 	if (!down_trylock(&c->alloc_sem)) {
 		up(&c->alloc_sem);
 		printk(KERN_CRIT "jffs2_flush_wbuf() called with alloc_sem not locked!\n");
@@ -136,10 +169,10 @@ int jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
 		
 		if ( c->wbuf_len + sizeof(struct jffs2_unknown_node) < c->wbuf_pagesize) {
 			struct jffs2_unknown_node *padnode = (void *)(c->wbuf + c->wbuf_len);
-			padnode->magic = JFFS2_MAGIC_BITMASK;
-			padnode->nodetype = JFFS2_NODETYPE_PADDING;
-			padnode->totlen = c->wbuf_pagesize - c->wbuf_len;
-			padnode->hdr_crc = crc32(0, padnode, sizeof(*padnode)-4);
+			padnode->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+			padnode->nodetype = cpu_to_je16(JFFS2_NODETYPE_PADDING);
+			padnode->totlen = cpu_to_je32(c->wbuf_pagesize - c->wbuf_len);
+			padnode->hdr_crc = cpu_to_je32(crc32(0, padnode, sizeof(*padnode)-4));
 		}
 	}
 	/* else jffs2_flash_writev has actually filled in the rest of the
@@ -175,10 +208,20 @@ int jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
 		spin_lock_bh(&c->erase_completion_lock);
 		if (!c->nextblock)
 			BUG();
-		if (c->nextblock->free_size < (c->wbuf_pagesize - c->wbuf_len))
+		/* wbuf_pagesize - wbuf_len is the amount of space that's to be 
+		   padded. If there is less free space in the block than that,
+		   something screwed up */
+		if (c->nextblock->free_size < (c->wbuf_pagesize - c->wbuf_len)) {
+			printk(KERN_CRIT "jffs2_flush_wbuf(): Accounting error. wbuf at 0x%08x has 0x%03x bytes, 0x%03x left.\n",
+			       c->wbuf_ofs, c->wbuf_len, c->wbuf_pagesize-c->wbuf_len);
+			printk(KERN_CRIT "jffs2_flush_wbuf(): But free_size for block at 0x%08x is only 0x%08x\n",
+			       c->nextblock->offset, c->nextblock->free_size);
 			BUG();
+		}
 		c->nextblock->free_size -= (c->wbuf_pagesize - c->wbuf_len);
-		c->nextblock->dirty_size += (c->wbuf_pagesize - c->wbuf_len);
+		c->free_size -= (c->wbuf_pagesize - c->wbuf_len);
+		c->nextblock->wasted_size += (c->wbuf_pagesize - c->wbuf_len);
+		c->wasted_size += (c->wbuf_pagesize - c->wbuf_len);
 		spin_unlock_bh(&c->erase_completion_lock);
 	}
 
@@ -415,28 +458,30 @@ int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *re
 	int	ret;
 
 	/* Read flash */
-	ret = c->mtd->read(c->mtd, ofs, len, retlen, buf);
-
-	if (!jffs2_can_mark_obsolete(c) && (ret == -EIO) && (*retlen == len) ) {
-		printk(KERN_WARNING "mtd->read(0x%x bytes from 0x%llx) returned ECC error\n", len, ofs);
-		/* 
-		 * We have the raw data without ECC correction in the buffer, maybe 
-		 * we are lucky and all data or parts are correct. We check the node.
-		 * If data are corrupted node check will sort it out.
-		 * We keep this block, it will fail on write or erase and the we
-		 * mark it bad. Or should we do that now? But we should give him a chance.
-		 * Maybe we had a system crash or power loss before the ecc write or  
-		 * a erase was completed.
-		 * So we return success. :)
-		 */
-		 ret = 0;	
-	}
+	if (!jffs2_can_mark_obsolete(c)) {
+		ret = c->mtd->read(c->mtd, ofs, len, retlen, buf);
+
+		if ( (ret == -EIO) && (*retlen == len) ) {
+			printk(KERN_WARNING "mtd->read(0x%x bytes from 0x%llx) returned ECC error\n", len, ofs);
+			/* 
+			 * We have the raw data without ECC correction in the buffer, maybe 
+			 * we are lucky and all data or parts are correct. We check the node.
+			 * If data are corrupted node check will sort it out.
+			 * We keep this block, it will fail on write or erase and the we
+			 * mark it bad. Or should we do that now? But we should give him a chance.
+			 * Maybe we had a system crash or power loss before the ecc write or  
+			 * a erase was completed.
+			 * So we return success. :)
+			 */
+		 	ret = 0;
+		 }	
+	} else
+		return c->mtd->read(c->mtd, ofs, len, retlen, buf);
 
 	/* if no writebuffer available or write buffer empty, return */
 	if (!c->wbuf_pagesize || !c->wbuf_len)
 		return ret;
 
-
 	/* if we read in a different block, return */
 	if ( (ofs & ~(c->sector_size-1)) != (c->wbuf_ofs & ~(c->sector_size-1)) ) 
 		return ret;	
@@ -478,7 +523,7 @@ int jffs2_check_oob_empty( struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
 	switch(c->mtd->ecctype) {
 	case MTD_ECC_SW:		
 		fsdata_pos = (c->wbuf_pagesize == 256) ? NAND_JFFS2_OOB8_FSDAPOS : NAND_JFFS2_OOB16_FSDAPOS;
-		badblock_pos = NAND_JFFS2_OOB_BADBPOS;
+		badblock_pos = NAND_BADBLOCK_POS;
 		break;
 	default:
 		D1(printk(KERN_WARNING "jffs2_write_oob_empty(): Invalid ECC type\n"));
@@ -486,7 +531,7 @@ int jffs2_check_oob_empty( struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
 	}	
 
 	/* allocate a buffer for all oob data in this sector */
-	len = oob_size * (c->sector_size/c->mtd->oobblock);
+	len = 4 * oob_size;
 	buf = kmalloc(len, GFP_KERNEL);
 	if (!buf) {
 		printk(KERN_NOTICE "jffs2_check_oob_empty(): allocation of temporary data buffer for oob check failed\n");
@@ -510,7 +555,7 @@ int jffs2_check_oob_empty( struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
 	}
 	
 	/* Special check for first two pages */
-	for (page = 0; page < 2; page += oob_size) {
+	for (page = 0; page < 2 * oob_size; page += oob_size) {
 		/* Check for bad block marker */
 		if (buf[page+badblock_pos] != 0xff) {
 			D1(printk(KERN_WARNING "jffs2_check_oob_empty(): Bad or failed block at %08x\n",jeb->offset));
@@ -563,7 +608,7 @@ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_erasebloc
 	case MTD_ECC_SW:	
 		fsdata_pos = (c->wbuf_pagesize == 256) ? NAND_JFFS2_OOB8_FSDAPOS : NAND_JFFS2_OOB16_FSDAPOS;
 		fsdata_len = (c->wbuf_pagesize == 256) ? NAND_JFFS2_OOB8_FSDALEN : NAND_JFFS2_OOB16_FSDALEN;
-		badblock_pos = NAND_JFFS2_OOB_BADBPOS;
+		badblock_pos = NAND_BADBLOCK_POS;
 		break;
 	default:
 		D1(printk(KERN_WARNING "jffs2_write_nand_cleanmarker(): Invalid ECC type\n"));
@@ -598,9 +643,9 @@ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_erasebloc
 		return 3;
 	}
 
-	n.magic = JFFS2_MAGIC_BITMASK;
-	n.nodetype = JFFS2_NODETYPE_CLEANMARKER;
-	n.totlen = 8;
+	n.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+	n.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER);
+	n.totlen = cpu_to_je32(8);
 	p = (unsigned char *) &n;
 	
 	for (i = 0; i < fsdata_len; i++) {
@@ -630,9 +675,9 @@ int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_erasebloc
 		return -EINVAL;
 	}	
 	
-	n.magic = JFFS2_MAGIC_BITMASK;
-	n.nodetype = JFFS2_NODETYPE_CLEANMARKER;
-	n.totlen = 8;
+	n.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+	n.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER);
+	n.totlen = cpu_to_je32(8);
 
 	ret = jffs2_flash_write_oob(c, jeb->offset + fsdata_pos, fsdata_len, &retlen, (unsigned char *)&n);
 	
@@ -661,7 +706,7 @@ int jffs2_nand_read_failcnt(struct jffs2_sb_info *c, struct jffs2_eraseblock *je
 
 	switch(c->mtd->ecctype) {
 	case MTD_ECC_SW:	
-		badblock_pos = NAND_JFFS2_OOB_BADBPOS;
+		badblock_pos = NAND_BADBLOCK_POS;
 		break;
 	default:
 		D1(printk(KERN_WARNING "jffs2_nand_read_failcnt(): Invalid ECC type\n"));
@@ -702,7 +747,7 @@ int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *
 
 	switch(c->mtd->ecctype) {
 	case MTD_ECC_SW:	
-		pos = NAND_JFFS2_OOB_BADBPOS;
+		pos = NAND_BADBLOCK_POS;
 		break;
 	default:
 		D1(printk(KERN_WARNING "jffs2_write_nand_badblock(): Invalid ECC type\n"));

fs/jffs2/writev.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: writev.c,v 1.2 2002/05/20 14:56:39 dwmw2 Exp $
+ * $Id: writev.c,v 1.3 2002/08/08 08:35:21 dwmw2 Exp $
  *
  */
 
@@ -28,7 +28,7 @@ static inline int mtd_fake_writev(struct mtd_info *mtd, const struct iovec *vecs
 	for (i=0; i<count; i++) {
 		if (!vecs[i].iov_len)
 			continue;
-		mtd->write(mtd, to, vecs[i].iov_len, &thislen, vecs[i].iov_base);
+		ret = mtd->write(mtd, to, vecs[i].iov_len, &thislen, vecs[i].iov_base);
 		totlen += thislen;
 		if (ret || thislen != vecs[i].iov_len)
 			break;

include/linux/jffs2_fs_i.h

-/* $Id: jffs2_fs_i.h,v 1.12 2002/03/06 13:59:21 dwmw2 Exp $ */
+/* $Id: jffs2_fs_i.h,v 1.15 2002/11/12 09:42:49 dwmw2 Exp $ */
 
 #ifndef _JFFS2_FS_I
 #define _JFFS2_FS_I
 
 #include <linux/version.h>
+#include <linux/rbtree.h>
 
 struct jffs2_inode_info {
 	/* We need an internal semaphore similar to inode->i_sem.
@@ -18,7 +19,7 @@ struct jffs2_inode_info {
 	uint32_t highest_version;
 
 	/* List of data fragments which make up the file */
-	struct jffs2_node_frag *fraglist;
+	struct rb_root fragtree;
 
 	/* There may be one datanode which isn't referenced by any of the
 	   above fragments, if it contains a metadata update but no actual

include/linux/jffs2_fs_sb.h

-/* $Id: jffs2_fs_sb.h,v 1.32 2002/07/23 14:35:34 dwmw2 Exp $ */
+/* $Id: jffs2_fs_sb.h,v 1.35 2002/11/12 09:42:18 dwmw2 Exp $ */
 
 #ifndef _JFFS2_FS_SB
 #define _JFFS2_FS_SB
@@ -21,6 +21,8 @@ struct jffs2_sb_info {
 	struct mtd_info *mtd;
 
 	uint32_t highest_ino;
+	uint32_t checked_ino;
+
 	unsigned int flags;
 
 	struct task_struct *gc_task;	/* GC task struct */
@@ -38,10 +40,12 @@ struct jffs2_sb_info {
 	uint32_t flash_size;
 	uint32_t used_size;
 	uint32_t dirty_size;
+	uint32_t wasted_size;
 	uint32_t free_size;
 	uint32_t erasing_size;
 	uint32_t bad_size;
 	uint32_t sector_size;
+	uint32_t unchecked_size;
 
 	uint32_t nr_free_blocks;
 	uint32_t nr_erasing_blocks;