Merge angband.namesys.com:/home/green/bk/linux-2.5

into angband.namesys.com:/home/green/bk_work/reiser3-linux-2.5

Documentation/Changes

@@ -314,7 +314,7 @@ o  <http://oss.software.ibm.com/jfs>
 
 Reiserfsprogs
 -------------
-o  <ftp://ftp.namesys.com/pub/reiserfsprogs/reiserfsprogs-3.x.0b.tar.gz>
+o  <ftp://ftp.namesys.com/pub/reiserfsprogs/reiserfsprogs-3.x.1b.tar.gz>
 
 LVM toolset
 -----------

fs/reiserfs/bitmap.c

@@ -103,7 +103,7 @@ static void _reiserfs_free_block (struct reiserfs_transaction_handle *th, unsign
   if (nr >= sb_bmap_nr (rs)) {
 	  reiserfs_warning ("vs-4075: reiserfs_free_block: "
 			    "block %lu is out of range on %s\n", 
-			    block, s->s_id);
+			    block, reiserfs_bdevname (s));
 	  return;
   }
 
@@ -113,7 +113,7 @@ static void _reiserfs_free_block (struct reiserfs_transaction_handle *th, unsign
   if (!reiserfs_test_and_clear_le_bit (offset, apbh[nr]->b_data)) {
       reiserfs_warning ("vs-4080: reiserfs_free_block: "
 			"free_block (%s:%lu)[dev:blocknr]: bit already cleared\n", 
-	    s->s_id, block);
+			reiserfs_bdevname (s), block);
   }
   journal_mark_dirty (th, s, apbh[nr]);
 
@@ -139,10 +139,8 @@ void reiserfs_free_block (struct reiserfs_transaction_handle *th,
 /* preallocated blocks don't need to be run through journal_mark_freed */
 void reiserfs_free_prealloc_block (struct reiserfs_transaction_handle *th, 
                           unsigned long block) {
-    struct super_block * s = th->t_super;
-
-    RFALSE(!s, "vs-4060: trying to free block on nonexistent device");
-    RFALSE(is_reusable (s, block, 1) == 0, "vs-4070: can not free such block");
+    RFALSE(!th->t_super, "vs-4060: trying to free block on nonexistent device");
+    RFALSE(is_reusable (th->t_super, block, 1) == 0, "vs-4070: can not free such block");
     _reiserfs_free_block(th, block) ;
 }
 
@@ -670,10 +668,7 @@ int reiserfs_new_unf_blocknrs2 (struct reiserfs_transaction_handle *th,
   return ret;
 }
 
-//
-// a portion of this function, was derived from minix or ext2's
-// analog. You should be able to tell which portion by looking at the
-// ext2 code and comparing. 
+
 static void __discard_prealloc (struct reiserfs_transaction_handle * th,
 				struct reiserfs_inode_info *ei)
 {

fs/reiserfs/dir.c

@@ -24,9 +24,10 @@ struct file_operations reiserfs_dir_operations = {
 };
 
 int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry, int datasync) {
-  lock_kernel();
-  reiserfs_commit_for_inode(dentry->d_inode) ;
-  unlock_kernel() ;
+  struct inode *inode = dentry->d_inode;
+  reiserfs_write_lock(inode->i_sb);
+  reiserfs_commit_for_inode(inode) ;
+  reiserfs_write_unlock(inode->i_sb) ;
   return 0 ;
 }
 
@@ -50,7 +51,7 @@ static int reiserfs_readdir (struct file * filp, void * dirent, filldir_t filldi
     struct reiserfs_dir_entry de;
     int ret = 0;
 
-    lock_kernel();
+    reiserfs_write_lock(inode->i_sb);
 
     reiserfs_check_lock_depth("readdir") ;
 
@@ -109,7 +110,7 @@ static int reiserfs_readdir (struct file * filp, void * dirent, filldir_t filldi
 		if (!d_name[d_reclen - 1])
 		    d_reclen = strlen (d_name);
 	
-		if (d_reclen > REISERFS_MAX_NAME_LEN(inode->i_sb->s_blocksize)){
+		if (d_reclen > REISERFS_MAX_NAME(inode->i_sb->s_blocksize)){
 		    /* too big to send back to VFS */
 		    continue ;
 		}
@@ -181,13 +182,12 @@ static int reiserfs_readdir (struct file * filp, void * dirent, filldir_t filldi
 
 
  end:
-    // FIXME: ext2_readdir does not reset f_pos
     filp->f_pos = next_pos;
     pathrelse (&path_to_entry);
     reiserfs_check_path(&path_to_entry) ;
     UPDATE_ATIME(inode) ;
  out:
-    unlock_kernel();
+    reiserfs_write_unlock(inode->i_sb);
     return ret;
 }
 

fs/reiserfs/file.c

@@ -39,7 +39,7 @@ static int reiserfs_file_release (struct inode * inode, struct file * filp)
 	return 0;
     }    
     
-    lock_kernel() ;
+    reiserfs_write_lock(inode->i_sb);
     down (&inode->i_sem); 
     journal_begin(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT * 3) ;
     reiserfs_update_inode_transaction(inode) ;
@@ -61,14 +61,12 @@ static int reiserfs_file_release (struct inode * inode, struct file * filp)
 	pop_journal_writer(windex) ;
     }
     up (&inode->i_sem); 
-    unlock_kernel() ;
+    reiserfs_write_unlock(inode->i_sb);
     return 0;
 }
 
 static void reiserfs_vfs_truncate_file(struct inode *inode) {
-    lock_kernel();
     reiserfs_truncate_file(inode, 1) ;
-    unlock_kernel();
 }
 
 /* Sync a reiserfs file. */
@@ -86,21 +84,21 @@ static int reiserfs_sync_file(
   struct inode * p_s_inode = p_s_dentry->d_inode;
   int n_err;
 
-  lock_kernel() ;
+  reiserfs_write_lock(p_s_inode->i_sb);
 
   if (!S_ISREG(p_s_inode->i_mode))
       BUG ();
 
   n_err = sync_mapping_buffers(p_s_inode->i_mapping) ;
   reiserfs_commit_for_inode(p_s_inode) ;
-  unlock_kernel() ;
+  reiserfs_write_unlock(p_s_inode->i_sb);
   return ( n_err < 0 ) ? -EIO : 0;
 }
 
 static int reiserfs_setattr(struct dentry *dentry, struct iattr *attr) {
     struct inode *inode = dentry->d_inode ;
     int error ;
-    lock_kernel();
+    reiserfs_write_lock(inode->i_sb);
     if (attr->ia_valid & ATTR_SIZE) {
 	/* version 2 items will be caught by the s_maxbytes check
 	** done for us in vmtruncate
@@ -138,7 +136,7 @@ static int reiserfs_setattr(struct dentry *dentry, struct iattr *attr) {
         inode_setattr(inode, attr) ;
 
 out:
-    unlock_kernel();
+    reiserfs_write_unlock(inode->i_sb);
     return error ;
 }
 

fs/reiserfs/fix_node.c

@@ -2092,21 +2092,27 @@ static void tb_buffer_sanity_check (struct super_block * p_s_sb,
   if (p_s_bh) {
     if (atomic_read (&(p_s_bh->b_count)) <= 0) {
 
-      reiserfs_panic (p_s_sb, "tb_buffer_sanity_check(): negative or zero reference counter for buffer %s[%d] (%b)\n", descr, level, p_s_bh);
+      reiserfs_panic (p_s_sb, "jmacd-1: tb_buffer_sanity_check(): negative or zero reference counter for buffer %s[%d] (%b)\n", descr, level, p_s_bh);
     }
 
     if ( ! buffer_uptodate (p_s_bh) ) {
-      reiserfs_panic (p_s_sb, "tb_buffer_sanity_check(): buffer is not up to date %s[%d] (%b)\n", descr, level, p_s_bh);
+      reiserfs_panic (p_s_sb, "jmacd-2: tb_buffer_sanity_check(): buffer is not up to date %s[%d] (%b)\n", descr, level, p_s_bh);
     }
 
     if ( ! B_IS_IN_TREE (p_s_bh) ) {
-      reiserfs_panic (p_s_sb, "tb_buffer_sanity_check(): buffer is not in tree %s[%d] (%b)\n", descr, level, p_s_bh);
+      reiserfs_panic (p_s_sb, "jmacd-3: tb_buffer_sanity_check(): buffer is not in tree %s[%d] (%b)\n", descr, level, p_s_bh);
     }
 
-    if (p_s_bh->b_bdev != p_s_sb->s_bdev || 
-	p_s_bh->b_size != p_s_sb->s_blocksize ||
-	p_s_bh->b_blocknr > SB_BLOCK_COUNT(p_s_sb)) {
-      reiserfs_panic (p_s_sb, "tb_buffer_sanity_check(): check failed for buffer %s[%d] (%b)\n", descr, level, p_s_bh);
+    if (p_s_bh->b_bdev != p_s_sb->s_bdev) {
+	reiserfs_panic (p_s_sb, "jmacd-4: tb_buffer_sanity_check(): buffer has wrong device %s[%d] (%b)\n", descr, level, p_s_bh);
+    }
+
+    if (p_s_bh->b_size != p_s_sb->s_blocksize) {
+	reiserfs_panic (p_s_sb, "jmacd-5: tb_buffer_sanity_check(): buffer has wrong blocksize %s[%d] (%b)\n", descr, level, p_s_bh);
+    }
+
+    if (p_s_bh->b_blocknr > SB_BLOCK_COUNT(p_s_sb)) {
+	reiserfs_panic (p_s_sb, "jmacd-6: tb_buffer_sanity_check(): buffer block number too high %s[%d] (%b)\n", descr, level, p_s_bh);
     }
   }
 }

fs/reiserfs/inode.c

@@ -20,10 +20,7 @@
 
 static int reiserfs_get_block (struct inode * inode, sector_t block,
 			       struct buffer_head * bh_result, int create);
-//
-// initially this function was derived from minix or ext2's analog and
-// evolved as the prototype did
-//
+
 void reiserfs_delete_inode (struct inode * inode)
 {
     int jbegin_count = JOURNAL_PER_BALANCE_CNT * 2; 
@@ -31,7 +28,7 @@ void reiserfs_delete_inode (struct inode * inode)
     struct reiserfs_transaction_handle th ;
 
   
-    lock_kernel() ; 
+    reiserfs_write_lock(inode->i_sb);
 
     /* The = 0 happens when we abort creating a new inode for some reason like lack of space.. */
     if (!(inode->i_state & I_NEW) && INODE_PKEY(inode)->k_objectid != 0) { /* also handles bad_inode case */
@@ -56,7 +53,7 @@ void reiserfs_delete_inode (struct inode * inode)
     }
     clear_inode (inode); /* note this must go after the journal_end to prevent deadlock */
     inode->i_blocks = 0;
-    unlock_kernel() ;
+    reiserfs_write_unlock(inode->i_sb);
 }
 
 static void _make_cpu_key (struct cpu_key * key, int version, __u32 dirid, __u32 objectid, 
@@ -112,8 +109,7 @@ static void add_to_flushlist(struct inode *inode, struct buffer_head *bh) {
 }
 
 //
-// FIXME: we might cache recently accessed indirect item (or at least
-// first 15 pointers just like ext2 does
+// FIXME: we might cache recently accessed indirect item
 
 // Ugh.  Not too eager for that....
 //  I cut the code until such time as I see a convincing argument (benchmark).
@@ -412,10 +408,10 @@ int reiserfs_bmap (struct inode * inode, sector_t block,
     if (!file_capable (inode, block))
 	return -EFBIG;
 
-    lock_kernel() ;
+    reiserfs_write_lock(inode->i_sb);
     /* do not read the direct item */
     _get_block_create_0 (inode, block, bh_result, 0) ;
-    unlock_kernel() ;
+    reiserfs_write_unlock(inode->i_sb);
     return 0;
 }
 
@@ -521,12 +517,7 @@ static inline int _allocate_block(struct reiserfs_transaction_handle *th,
 #endif
     return reiserfs_new_unf_blocknrs (th, allocated_block_nr, tag);
 }
-//
-// initially this function was derived from ext2's analog and evolved
-// as the prototype did.  You'll need to look at the ext2 version to
-// determine which parts are derivative, if any, understanding that
-// there are only so many ways to code to a given interface.
-//
+
 int reiserfs_get_block (struct inode * inode, sector_t block,
 			struct buffer_head * bh_result, int create)
 {
@@ -554,17 +545,17 @@ int reiserfs_get_block (struct inode * inode, sector_t block,
     loff_t new_offset = (((loff_t)block) << inode->i_sb->s_blocksize_bits) + 1 ;
 
 				/* bad.... */
-    lock_kernel() ;
+    reiserfs_write_lock(inode->i_sb);
     th.t_trans_id = 0 ;
     version = get_inode_item_key_version (inode);
 
     if (block < 0) {
-	unlock_kernel();
+	reiserfs_write_unlock(inode->i_sb);
 	return -EIO;
     }
 
     if (!file_capable (inode, block)) {
-	unlock_kernel() ;
+	reiserfs_write_unlock(inode->i_sb);
 	return -EFBIG;
     }
 
@@ -576,7 +567,7 @@ int reiserfs_get_block (struct inode * inode, sector_t block,
 	/* find number of block-th logical block of the file */
 	ret = _get_block_create_0 (inode, block, bh_result, 
 	                           create | GET_BLOCK_READ_DIRECT) ;
-	unlock_kernel() ;
+	reiserfs_write_unlock(inode->i_sb);
 	return ret;
     }
 
@@ -667,7 +658,7 @@ int reiserfs_get_block (struct inode * inode, sector_t block,
 	if (transaction_started)
 	    journal_end(&th, inode->i_sb, jbegin_count) ;
 
-	unlock_kernel() ;
+	reiserfs_write_unlock(inode->i_sb);
 	 
 	/* the item was found, so new blocks were not added to the file
 	** there is no need to make sure the inode is updated with this 
@@ -866,7 +857,6 @@ int reiserfs_get_block (struct inode * inode, sector_t block,
 
 
     retval = 0;
-    reiserfs_check_path(&path) ;
 
  failure:
     if (transaction_started) {
@@ -874,7 +864,7 @@ int reiserfs_get_block (struct inode * inode, sector_t block,
       journal_end(&th, inode->i_sb, jbegin_count) ;
     }
     pop_journal_writer(windex) ;
-    unlock_kernel() ;
+    reiserfs_write_unlock(inode->i_sb);
     reiserfs_check_path(&path) ;
     return retval;
 }
@@ -1353,10 +1343,6 @@ int reiserfs_encode_fh(struct dentry *dentry, __u32 *data, int *lenp, int need_p
 }
 
 
-//
-// initially this function was derived from minix or ext2's analog and
-// evolved as the prototype did
-//
 /* looks for stat data, then copies fields to it, marks the buffer
    containing stat data as dirty */
 /* reiserfs inodes are never really dirty, since the dirty inode call
@@ -1379,11 +1365,11 @@ void reiserfs_write_inode (struct inode * inode, int do_sync) {
     ** ignored because the altered inode has already been logged.
     */
     if (do_sync && !(current->flags & PF_MEMALLOC)) {
-	lock_kernel() ;
+	reiserfs_write_lock(inode->i_sb);
 	journal_begin(&th, inode->i_sb, jbegin_count) ;
 	reiserfs_update_sd (&th, inode);
 	journal_end_sync(&th, inode->i_sb, jbegin_count) ;
-	unlock_kernel() ;
+	reiserfs_write_unlock(inode->i_sb);
     }
 }
 
@@ -1725,7 +1711,8 @@ static int grab_tail_page(struct inode *p_s_inode,
 	** call prepare_write
 	*/
 	reiserfs_warning("clm-6000: error reading block %lu on dev %s\n",
-	                  bh->b_blocknr, p_s_inode->i_sb->s_id) ;
+			 bh->b_blocknr,
+			 reiserfs_bdevname (p_s_inode->i_sb)) ;
 	error = -EIO ;
 	goto unlock ;
     }
@@ -1750,7 +1737,6 @@ static int grab_tail_page(struct inode *p_s_inode,
 void reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps) {
     struct reiserfs_transaction_handle th ;
     int windex ;
-
     /* we want the offset for the first byte after the end of the file */
     unsigned long offset = p_s_inode->i_size & (PAGE_CACHE_SIZE - 1) ;
     unsigned blocksize = p_s_inode->i_sb->s_blocksize ;
@@ -1759,6 +1745,8 @@ void reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps) {
     int error ;
     struct buffer_head *bh = NULL ;
 
+    reiserfs_write_lock(p_s_inode->i_sb);
+
     if (p_s_inode->i_size > 0) {
         if ((error = grab_tail_page(p_s_inode, &page, &bh))) {
 	    // -ENOENT means we truncated past the end of the file, 
@@ -1812,7 +1800,7 @@ void reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps) {
 	page_cache_release(page) ;
     }
 
-    return ;
+    reiserfs_write_unlock(p_s_inode->i_sb);
 }
 
 static int map_block_for_writepage(struct inode *inode, 
@@ -1836,7 +1824,7 @@ static int map_block_for_writepage(struct inode *inode,
 
     kmap(bh_result->b_page) ;
 start_over:
-    lock_kernel() ;
+    reiserfs_write_lock(inode->i_sb);
     journal_begin(&th, inode->i_sb, jbegin_count) ;
     reiserfs_update_inode_transaction(inode) ;
 
@@ -1894,7 +1882,7 @@ static int map_block_for_writepage(struct inode *inode,
 	    goto research ;
 	}
     } else {
-        reiserfs_warning("clm-6003: bad item inode %lu, device %s\n", inode->i_ino, inode->i_sb->s_id) ;
+        reiserfs_warning("clm-6003: bad item inode %lu, device %s\n", inode->i_ino, reiserfs_bdevname (inode->i_sb)) ;
         retval = -EIO ;
 	goto out ;
     }
@@ -1903,7 +1891,7 @@ static int map_block_for_writepage(struct inode *inode,
 out:
     pathrelse(&path) ;
     journal_end(&th, inode->i_sb, jbegin_count) ;
-    unlock_kernel() ;
+    reiserfs_write_unlock(inode->i_sb);
 
     /* this is where we fill in holes in the file. */
     if (use_get_block) {
@@ -2033,18 +2021,13 @@ static int reiserfs_write_full_page(struct page *page) {
     return error ;
 }
 
-//
-// this is exactly what 2.3.99-pre9's ext2_readpage is
-//
+
 static int reiserfs_readpage (struct file *f, struct page * page)
 {
     return block_read_full_page (page, reiserfs_get_block);
 }
 
 
-//
-// modified from ext2_writepage is
-//
 static int reiserfs_writepage (struct page * page)
 {
     struct inode *inode = page->mapping->host ;
@@ -2053,9 +2036,6 @@ static int reiserfs_writepage (struct page * page)
 }
 
 
-//
-// from ext2_prepare_write, but modified
-//
 int reiserfs_prepare_write(struct file *f, struct page *page, 
 			   unsigned from, unsigned to) {
     struct inode *inode = page->mapping->host ;
@@ -2065,9 +2045,6 @@ int reiserfs_prepare_write(struct file *f, struct page *page,
 }
 
 
-//
-// this is exactly what 2.3.99-pre9's ext2_bmap is
-//
 static int reiserfs_aop_bmap(struct address_space *as, long block) {
   return generic_block_bmap(as, block, reiserfs_bmap) ;
 }
@@ -2086,13 +2063,13 @@ static int reiserfs_commit_write(struct file *f, struct page *page,
     */
     if (pos > inode->i_size) {
 	struct reiserfs_transaction_handle th ;
-	lock_kernel() ;
+	reiserfs_write_lock(inode->i_sb);
 	journal_begin(&th, inode->i_sb, 1) ;
 	reiserfs_update_inode_transaction(inode) ;
 	inode->i_size = pos ;
 	reiserfs_update_sd(&th, inode) ;
 	journal_end(&th, inode->i_sb, 1) ;
-	unlock_kernel() ;
+	reiserfs_write_unlock(inode->i_sb);
     }
  
     ret = generic_commit_write(f, page, from, to) ;
@@ -2101,9 +2078,9 @@ static int reiserfs_commit_write(struct file *f, struct page *page,
     ** for any packed tails the file might have had
     */
     if (f && (f->f_flags & O_SYNC)) {
-	lock_kernel() ;
+	reiserfs_write_lock(inode->i_sb);
  	reiserfs_commit_for_inode(inode) ;
-	unlock_kernel();
+	reiserfs_write_unlock(inode->i_sb);
     }
     return ret ;
 }

fs/reiserfs/ioctl.c

@@ -49,7 +49,7 @@ int reiserfs_unpack (struct inode * inode, struct file * filp)
     if (REISERFS_I(inode)->i_flags & i_nopack_mask) {
         return 0 ;
     }
-    lock_kernel();
+    reiserfs_write_lock(inode->i_sb);
 
     /* we need to make sure nobody is changing the file size beneath
     ** us
@@ -88,6 +88,6 @@ int reiserfs_unpack (struct inode * inode, struct file * filp)
 
 out:
     up(&inode->i_sem) ;
-    unlock_kernel();    
+    reiserfs_write_unlock(inode->i_sb);
     return retval;
 }

fs/reiserfs/journal.c

@@ -99,21 +99,6 @@ static int journal_join(struct reiserfs_transaction_handle *th, struct super_blo
 static int release_journal_dev( struct super_block *super,
 				struct reiserfs_journal *journal );
 
-static inline struct buffer_head *journ_get_hash_table(struct super_block *s, int block)
-{
-	return __get_hash_table(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize);
-}
- 
-static inline struct buffer_head *journ_getblk(struct super_block *s, int block)
-{
-	return __getblk(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize);
-}
-
-static inline struct buffer_head *journ_bread(struct super_block *s, int block)
-{
-	return __bread(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize);
-}
-
 static void init_journal_hash(struct super_block *p_s_sb) {
   memset(SB_JOURNAL(p_s_sb)->j_hash_table, 0, JOURNAL_HASH_SIZE * sizeof(struct reiserfs_journal_cnode *)) ;
 }
@@ -704,7 +689,7 @@ static int flush_commit_list(struct super_block *s, struct reiserfs_journal_list
   count = 0 ;
   for (i = 0 ; atomic_read(&(jl->j_commit_left)) > 1 && i < (jl->j_len + 1) ; i++) {  /* everything but commit_bh */
     bn = SB_ONDISK_JOURNAL_1st_BLOCK(s) + (jl->j_start+i) %  SB_ONDISK_JOURNAL_SIZE(s);
-    tbh = journ_get_hash_table(s, bn) ;
+    tbh = journal_get_hash_table(s, bn) ;
 
 /* kill this sanity check */
 if (count > (orig_commit_left + 2)) {
@@ -733,7 +718,7 @@ reiserfs_panic(s, "journal-539: flush_commit_list: BAD count(%d) > orig_commit_l
     for (i = 0 ; atomic_read(&(jl->j_commit_left)) > 1 && 
                  i < (jl->j_len + 1) ; i++) {  /* everything but commit_bh */
       bn = SB_ONDISK_JOURNAL_1st_BLOCK(s) + (jl->j_start + i) % SB_ONDISK_JOURNAL_SIZE(s) ;
-      tbh = journ_get_hash_table(s, bn) ;
+      tbh = journal_get_hash_table(s, bn) ;
 
       wait_on_buffer(tbh) ;
       if (!buffer_uptodate(tbh)) {
@@ -1426,7 +1411,7 @@ static int journal_transaction_is_valid(struct super_block *p_s_sb, struct buffe
     offset = d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) ;
 
     /* ok, we have a journal description block, lets see if the transaction was valid */
-    c_bh = journ_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) +
+    c_bh = journal_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) +
 		 ((offset + le32_to_cpu(desc->j_len) + 1) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ;
     if (!c_bh)
       return 0 ;
@@ -1481,7 +1466,7 @@ static int journal_read_transaction(struct super_block *p_s_sb, unsigned long cu
   unsigned long trans_offset ;
   int i;
 
-  d_bh = journ_bread(p_s_sb, cur_dblock) ;
+  d_bh = journal_bread(p_s_sb, cur_dblock) ;
   if (!d_bh)
     return 1 ;
   desc = (struct reiserfs_journal_desc *)d_bh->b_data ;
@@ -1505,7 +1490,7 @@ static int journal_read_transaction(struct super_block *p_s_sb, unsigned long cu
     brelse(d_bh) ;
     return 1 ;
   }
-  c_bh = journ_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) +
+  c_bh = journal_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) +
 		((trans_offset + le32_to_cpu(desc->j_len) + 1) % 
 		 SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ;
   if (!c_bh) {
@@ -1536,7 +1521,7 @@ static int journal_read_transaction(struct super_block *p_s_sb, unsigned long cu
   }
   /* get all the buffer heads */
   for(i = 0 ; i < le32_to_cpu(desc->j_len) ; i++) {
-    log_blocks[i] =  journ_getblk(p_s_sb,  SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + (trans_offset + 1 + i) % SB_ONDISK_JOURNAL_SIZE(p_s_sb));
+    log_blocks[i] =  journal_getblk(p_s_sb,  SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + (trans_offset + 1 + i) % SB_ONDISK_JOURNAL_SIZE(p_s_sb));
     if (i < JOURNAL_TRANS_HALF) {
       real_blocks[i] = sb_getblk(p_s_sb, le32_to_cpu(desc->j_realblock[i])) ;
     } else {
@@ -1606,16 +1591,13 @@ static int journal_read_transaction(struct super_block *p_s_sb, unsigned long cu
   return 0 ;
 }
 
-/*
-** read and replay the log
-** on a clean unmount, the journal header's next unflushed pointer will be to an invalid
-** transaction.  This tests that before finding all the transactions in the log, whic makes normal mount times fast.
-**
-** After a crash, this starts with the next unflushed transaction, and replays until it finds one too old, or invalid.
-**
-** On exit, it sets things up so the first transaction will work correctly.
-*/
-struct buffer_head * reiserfs_breada (struct super_block *sb, int block, 
+/* This function reads blocks starting from block and to max_block of bufsize
+   size (but no more than BUFNR blocks at a time). This proved to improve
+   mounting speed on self-rebuilding raid5 arrays at least.
+   Right now it is only used from journal code. But later we might use it
+   from other places.
+   Note: Do not use journal_getblk/sb_getblk functions here! */
+struct buffer_head * reiserfs_breada (struct block_device *dev, int block, int bufsize,
 			    unsigned int max_block)
 {
 	struct buffer_head * bhlist[BUFNR];
@@ -1623,7 +1605,7 @@ struct buffer_head * reiserfs_breada (struct super_block *sb, int block,
 	struct buffer_head * bh;
 	int i, j;
 	
-	bh = sb_getblk (sb, block);
+	bh = __getblk (dev, block, bufsize );
 	if (buffer_uptodate (bh))
 		return (bh);   
 		
@@ -1633,7 +1615,7 @@ struct buffer_head * reiserfs_breada (struct super_block *sb, int block,
 	bhlist[0] = bh;
 	j = 1;
 	for (i = 1; i < blocks; i++) {
-		bh = sb_getblk (sb, block + i);
+		bh = __getblk (dev, block + i, bufsize);
 		if (buffer_uptodate (bh)) {
 			brelse (bh);
 			break;
@@ -1650,6 +1632,16 @@ struct buffer_head * reiserfs_breada (struct super_block *sb, int block,
 	brelse (bh);
 	return NULL;
 }
+
+/*
+** read and replay the log
+** on a clean unmount, the journal header's next unflushed pointer will be to an invalid
+** transaction.  This tests that before finding all the transactions in the log, whic makes normal mount times fast.
+**
+** After a crash, this starts with the next unflushed transaction, and replays until it finds one too old, or invalid.
+**
+** On exit, it sets things up so the first transaction will work correctly.
+*/
 static int journal_read(struct super_block *p_s_sb) {
   struct reiserfs_journal_desc *desc ;
   unsigned long oldest_trans_id = 0;
@@ -1667,14 +1659,14 @@ static int journal_read(struct super_block *p_s_sb) {
 
   cur_dblock = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) ;
   printk("reiserfs: checking transaction log (%s) for (%s)\n",
-	 __bdevname(SB_JOURNAL_DEV(p_s_sb)), p_s_sb->s_id) ;
+	 bdevname(SB_JOURNAL(p_s_sb)->j_dev_bd), reiserfs_bdevname(p_s_sb));
   start = CURRENT_TIME ;
 
   /* step 1, read in the journal header block.  Check the transaction it says 
   ** is the first unflushed, and if that transaction is not valid, 
   ** replay is done
   */
-  SB_JOURNAL(p_s_sb)->j_header_bh = journ_bread(p_s_sb,
+  SB_JOURNAL(p_s_sb)->j_header_bh = journal_bread(p_s_sb,
 					   SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + 
 					   SB_ONDISK_JOURNAL_SIZE(p_s_sb));
   if (!SB_JOURNAL(p_s_sb)->j_header_bh) {
@@ -1698,7 +1690,7 @@ static int journal_read(struct super_block *p_s_sb) {
     ** there is nothing more we can do, and it makes no sense to read 
     ** through the whole log.
     */
-    d_bh = journ_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + le32_to_cpu(jh->j_first_unflushed_offset)) ;
+    d_bh = journal_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + le32_to_cpu(jh->j_first_unflushed_offset)) ;
     ret = journal_transaction_is_valid(p_s_sb, d_bh, NULL, NULL) ;
     if (!ret) {
       continue_replay = 0 ;
@@ -1716,7 +1708,9 @@ static int journal_read(struct super_block *p_s_sb) {
   ** all the valid transactions, and pick out the oldest.
   */
   while(continue_replay && cur_dblock < (SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_ONDISK_JOURNAL_SIZE(p_s_sb))) {
-    d_bh = reiserfs_breada(p_s_sb, cur_dblock,
+    /* Note that it is required for blocksize of primary fs device and journal
+       device to be the same */
+    d_bh = reiserfs_breada(SB_JOURNAL(p_s_sb)->j_dev_bd, cur_dblock, p_s_sb->s_blocksize,
 			   SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_ONDISK_JOURNAL_SIZE(p_s_sb)) ;
     ret = journal_transaction_is_valid(p_s_sb, d_bh, &oldest_invalid_trans_id, &newest_mount_id) ;
     if (ret == 1) {
@@ -1925,13 +1919,20 @@ static int release_journal_dev( struct super_block *super,
     
     result = 0;
 	
-    if( journal -> j_dev_bd != NULL ) {
-	result = blkdev_put( journal -> j_dev_bd, BDEV_FS );
-	journal -> j_dev_bd = NULL;
-    }
+
     if( journal -> j_dev_file != NULL ) {
+	/*
+	 * journal block device was taken via filp_open
+	 */
 	result = filp_close( journal -> j_dev_file, NULL );
 	journal -> j_dev_file = NULL;
+	journal -> j_dev_bd = NULL;
+    } else if( journal -> j_dev_bd != NULL ) {
+	/*
+	 * journal block device was taken via bdget and blkdev_get
+	 */
+	result = blkdev_put( journal -> j_dev_bd, BDEV_FS );
+	journal -> j_dev_bd = NULL;
     }
     if( result != 0 ) {
 	reiserfs_warning("sh-457: release_journal_dev: Cannot release journal device: %i", result );
@@ -1966,6 +1967,9 @@ static int journal_init_dev( struct super_block *super,
 			printk( "sh-458: journal_init_dev: cannot init journal device\n '%s': %i", 
 				kdevname( jdev ), result );
 
+		else if (!kdev_same(jdev, super->s_dev)) {
+			set_blocksize(journal->j_dev_bd, super->s_blocksize);
+		}
 		return result;
 	}
 
@@ -1981,15 +1985,12 @@ static int journal_init_dev( struct super_block *super,
 		} else if( jdev_inode -> i_bdev == NULL ) {
 			printk( "journal_init_dev: bdev unintialized for '%s'", jdev_name );
 			result = -ENOMEM;
-		} else if( ( result = blkdev_get( jdev_inode -> i_bdev, 
-						  FMODE_READ | FMODE_WRITE,
-						  0, BDEV_FS ) ) != 0 ) {
-			printk( "journal_init_dev: Cannot load device '%s': %i", jdev_name,
-			     result );
-		} else
+		} else  {
 			/* ok */
 			SB_JOURNAL_DEV( super ) = 
 				to_kdev_t( jdev_inode -> i_bdev -> bd_dev );
+			set_blocksize(journal->j_dev_bd, super->s_blocksize);
+		}
 	} else {
 		result = PTR_ERR( journal -> j_dev_file );
 		journal -> j_dev_file = NULL;
@@ -2041,7 +2042,7 @@ int journal_init(struct super_block *p_s_sb, const char * j_dev_name, int old_fo
      rs = SB_DISK_SUPER_BLOCK(p_s_sb);
      
      /* read journal header */
-     bhjh = journ_bread(p_s_sb,
+     bhjh = journal_bread(p_s_sb,
 		   SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_ONDISK_JOURNAL_SIZE(p_s_sb));
      if (!bhjh) {
 	 printk("sh-459: unable to read  journal header\n") ;
@@ -2052,15 +2053,11 @@ int journal_init(struct super_block *p_s_sb, const char * j_dev_name, int old_fo
      
      /* make sure that journal matches to the super block */
      if (is_reiserfs_jr(rs) && (jh->jh_journal.jp_journal_magic != sb_jp_journal_magic(rs))) {
-	 char jname[ 32 ];
-	 char fname[ 32 ];
 	 
-	 strcpy( jname, kdevname( SB_JOURNAL_DEV(p_s_sb) ) );
-	 strcpy( fname, p_s_sb->s_id);
 	 printk("sh-460: journal header magic %x (device %s) does not match "
 		"to magic found in super block %x (device %s)\n",
-		jh->jh_journal.jp_journal_magic, jname,
-		sb_jp_journal_magic(rs), fname);
+		jh->jh_journal.jp_journal_magic, kdevname( SB_JOURNAL_DEV(p_s_sb) ),
+		sb_jp_journal_magic(rs), reiserfs_bdevname (p_s_sb));
 	 brelse (bhjh);
 	 release_journal_dev(p_s_sb, journal);
 	 return 1 ;
@@ -2985,7 +2982,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th, struct super_b
   
   rs = SB_DISK_SUPER_BLOCK(p_s_sb) ;
   /* setup description block */
-  d_bh = journ_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_JOURNAL(p_s_sb)->j_start) ; 
+  d_bh = journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_JOURNAL(p_s_sb)->j_start) ; 
   set_buffer_uptodate(d_bh) ;
   desc = (struct reiserfs_journal_desc *)(d_bh)->b_data ;
   memset(desc, 0, sizeof(struct reiserfs_journal_desc)) ;
@@ -2993,7 +2990,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th, struct super_b
   desc->j_trans_id = cpu_to_le32(SB_JOURNAL(p_s_sb)->j_trans_id) ;
 
   /* setup commit block.  Don't write (keep it clean too) this one until after everyone else is written */
-  c_bh =  journ_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + 
+  c_bh =  journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + 
 		 ((SB_JOURNAL(p_s_sb)->j_start + SB_JOURNAL(p_s_sb)->j_len + 1) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ;
   commit = (struct reiserfs_journal_commit *)c_bh->b_data ;
   memset(commit, 0, sizeof(struct reiserfs_journal_commit)) ;
@@ -3084,7 +3081,7 @@ printk("journal-2020: do_journal_end: BAD desc->j_len is ZERO\n") ;
     /* copy all the real blocks into log area.  dirty log blocks */
     if (test_bit(BH_JDirty, &cn->bh->b_state)) {
       struct buffer_head *tmp_bh ;
-      tmp_bh =  journ_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + 
+      tmp_bh =  journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + 
 		       ((cur_write_start + jindex) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ;
       set_buffer_uptodate(tmp_bh) ;
       memcpy(tmp_bh->b_data, cn->bh->b_data, cn->bh->b_size) ;  

fs/reiserfs/namei.c

@@ -195,13 +195,6 @@ static __u32 get_third_component (struct super_block * s,
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_match (struct reiserfs_dir_entry * de, 
 			   const char * name, int namelen)
 {
@@ -284,13 +277,6 @@ static int linear_search_in_dir_item (struct cpu_key * key, struct reiserfs_dir_
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 // may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
 // FIXME: should add something like IOERROR
 static int reiserfs_find_entry (struct inode * dir, const char * name, int namelen, 
@@ -300,7 +286,7 @@ static int reiserfs_find_entry (struct inode * dir, const char * name, int namel
     int retval;
 
 
-    if (namelen > REISERFS_MAX_NAME_LEN (dir->i_sb->s_blocksize))
+    if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize))
 	return NAME_NOT_FOUND;
 
     /* we will search for this key in the tree */
@@ -330,13 +316,6 @@ static int reiserfs_find_entry (struct inode * dir, const char * name, int namel
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static struct dentry * reiserfs_lookup (struct inode * dir, struct dentry * dentry)
 {
     int retval;
@@ -344,21 +323,21 @@ static struct dentry * reiserfs_lookup (struct inode * dir, struct dentry * dent
     struct reiserfs_dir_entry de;
     INITIALIZE_PATH (path_to_entry);
 
-    if (dentry->d_name.len > REISERFS_MAX_NAME_LEN (dir->i_sb->s_blocksize))
+    if (REISERFS_MAX_NAME (dir->i_sb->s_blocksize) < dentry->d_name.len)
 	return ERR_PTR(-ENAMETOOLONG);
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     de.de_gen_number_bit_string = 0;
     retval = reiserfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &path_to_entry, &de);
     pathrelse (&path_to_entry);
     if (retval == NAME_FOUND) {
 	inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
 	if (!inode || IS_ERR(inode)) {
-	    unlock_kernel();
+	    reiserfs_write_unlock(dir->i_sb);
 	    return ERR_PTR(-EACCES);
         }
     }
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     if ( retval == IO_ERROR ) {
 	return ERR_PTR(-EIO);
     }
@@ -390,15 +369,15 @@ struct dentry *reiserfs_get_parent(struct dentry *child)
     }
     de.de_gen_number_bit_string = 0;
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     retval = reiserfs_find_entry (dir, "..", 2, &path_to_entry, &de);
     pathrelse (&path_to_entry);
     if (retval != NAME_FOUND) {
-	unlock_kernel();
+	reiserfs_write_unlock(dir->i_sb);
 	return ERR_PTR(-ENOENT);
     }
     inode = reiserfs_iget (dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
 
     if (!inode || IS_ERR(inode)) {
 	return ERR_PTR(-EACCES);
@@ -412,14 +391,6 @@ struct dentry *reiserfs_get_parent(struct dentry *child)
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
-
 /* add entry to the directory (entry can be hidden). 
 
 insert definition of when hidden directories are used here -Hans
@@ -447,7 +418,7 @@ static int reiserfs_add_entry (struct reiserfs_transaction_handle *th, struct in
     if (!namelen)
 	return -EINVAL;
 
-    if (namelen > REISERFS_MAX_NAME_LEN (dir->i_sb->s_blocksize))
+    if (namelen > REISERFS_MAX_NAME (dir->i_sb->s_blocksize))
 	return -ENAMETOOLONG;
 
     /* each entry has unique key. compose it */
@@ -463,7 +434,7 @@ static int reiserfs_add_entry (struct reiserfs_transaction_handle *th, struct in
     } else
 	buffer = small_buf;
 
-    paste_size = (old_format_only (dir->i_sb)) ? (DEH_SIZE + namelen) : buflen;
+    paste_size = (get_inode_sd_version (dir) == STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen;
 
     /* fill buffer : directory entry head, name[, dir objectid | , stat data | ,stat data, dir objectid ] */
     deh = (struct reiserfs_de_head *)buffer;
@@ -587,13 +558,6 @@ static int new_inode_init(struct inode *inode, struct inode *dir, int mode) {
     return 0 ;
 }
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_create (struct inode * dir, struct dentry *dentry, int mode)
 {
     int retval;
@@ -601,15 +565,14 @@ static int reiserfs_create (struct inode * dir, struct dentry *dentry, int mode)
     int jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 ;
     struct reiserfs_transaction_handle th ;
 
-    inode = new_inode(dir->i_sb) ;
-    if (!inode) {
+    if (!(inode = new_inode(dir->i_sb))) {
 	return -ENOMEM ;
     }
     retval = new_inode_init(inode, dir, mode);
     if (retval)
         return retval;
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     journal_begin(&th, dir->i_sb, jbegin_count) ;
     th.t_caller = "create" ;
     retval = reiserfs_new_inode (&th, dir, mode, 0, 0/*i_size*/, dentry, inode);
@@ -637,18 +600,11 @@ static int reiserfs_create (struct inode * dir, struct dentry *dentry, int mode)
     journal_end(&th, dir->i_sb, jbegin_count) ;
 
 out_failed:
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return retval;
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_mknod (struct inode * dir, struct dentry *dentry, int mode, int rdev)
 {
     int retval;
@@ -656,15 +612,14 @@ static int reiserfs_mknod (struct inode * dir, struct dentry *dentry, int mode,
     struct reiserfs_transaction_handle th ;
     int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3; 
 
-    inode = new_inode(dir->i_sb) ;
-    if (!inode) {
+    if (!(inode = new_inode(dir->i_sb))) {
 	return -ENOMEM ;
     }
     retval = new_inode_init(inode, dir, mode);
     if (retval)
         return retval;
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     journal_begin(&th, dir->i_sb, jbegin_count) ;
 
     retval = reiserfs_new_inode (&th, dir, mode, 0, 0/*i_size*/, dentry, inode);
@@ -694,18 +649,11 @@ static int reiserfs_mknod (struct inode * dir, struct dentry *dentry, int mode,
     journal_end(&th, dir->i_sb, jbegin_count) ;
 
 out_failed:
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return retval;
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_mkdir (struct inode * dir, struct dentry *dentry, int mode)
 {
     int retval;
@@ -714,15 +662,14 @@ static int reiserfs_mkdir (struct inode * dir, struct dentry *dentry, int mode)
     int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3; 
 
     mode = S_IFDIR | mode;
-    inode = new_inode(dir->i_sb) ;
-    if (!inode) {
+    if (!(inode = new_inode(dir->i_sb))) {
 	return -ENOMEM ;
     }
     retval = new_inode_init(inode, dir, mode);
     if (retval)
         return retval;
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     journal_begin(&th, dir->i_sb, jbegin_count) ;
 
     /* inc the link count now, so another writer doesn't overflow it while
@@ -762,7 +709,7 @@ static int reiserfs_mkdir (struct inode * dir, struct dentry *dentry, int mode)
     d_instantiate(dentry, inode);
     journal_end(&th, dir->i_sb, jbegin_count) ;
 out_failed:
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return retval;
 }
 
@@ -779,14 +726,6 @@ static inline int reiserfs_empty_dir(struct inode *inode) {
     return 1 ;
 }
 
-
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_rmdir (struct inode * dir, struct dentry *dentry)
 {
     int retval;
@@ -801,7 +740,7 @@ static int reiserfs_rmdir (struct inode * dir, struct dentry *dentry)
     /* we will be doing 2 balancings and update 2 stat data */
     jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2;
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     journal_begin(&th, dir->i_sb, jbegin_count) ;
     windex = push_journal_writer("reiserfs_rmdir") ;
 
@@ -855,7 +794,7 @@ static int reiserfs_rmdir (struct inode * dir, struct dentry *dentry)
     pop_journal_writer(windex) ;
     journal_end(&th, dir->i_sb, jbegin_count) ;
     reiserfs_check_path(&path) ;
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return 0;
 	
  end_rmdir:
@@ -865,18 +804,10 @@ static int reiserfs_rmdir (struct inode * dir, struct dentry *dentry)
     pathrelse (&path);
     pop_journal_writer(windex) ;
     journal_end(&th, dir->i_sb, jbegin_count) ;
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return retval;	
 }
 
-
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
 {
     int retval;
@@ -893,7 +824,7 @@ static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
        two stat datas */
     jbegin_count = JOURNAL_PER_BALANCE_CNT * 2 + 2;
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     journal_begin(&th, dir->i_sb, jbegin_count) ;
     windex = push_journal_writer("reiserfs_unlink") ;
 	
@@ -918,7 +849,7 @@ static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
   
     if (!inode->i_nlink) {
 	printk("reiserfs_unlink: deleting nonexistent file (%s:%lu), %d\n",
-	       inode->i_sb->s_id, inode->i_ino, inode->i_nlink);
+	       reiserfs_bdevname (inode->i_sb), inode->i_ino, inode->i_nlink);
 	inode->i_nlink = 1;
     }
 
@@ -942,7 +873,7 @@ static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
     pop_journal_writer(windex) ;
     journal_end(&th, dir->i_sb, jbegin_count) ;
     reiserfs_check_path(&path) ;
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return 0;
 
  end_unlink:
@@ -950,19 +881,12 @@ static int reiserfs_unlink (struct inode * dir, struct dentry *dentry)
     pop_journal_writer(windex) ;
     journal_end(&th, dir->i_sb, jbegin_count) ;
     reiserfs_check_path(&path) ;
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return retval;
 }
 
-
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
-static int reiserfs_symlink (struct inode * dir, struct dentry * dentry, const char * symname)
+static int reiserfs_symlink (struct inode * parent_dir, 
+                            struct dentry * dentry, const char * symname)
 {
     int retval;
     struct inode * inode;
@@ -972,24 +896,23 @@ static int reiserfs_symlink (struct inode * dir, struct dentry * dentry, const c
     int mode = S_IFLNK | S_IRWXUGO;
     int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3; 
 
-    inode = new_inode(dir->i_sb) ;
-    if (!inode) {
+    if (!(inode = new_inode(parent_dir->i_sb))) {
 	return -ENOMEM ;
     }
-    retval = new_inode_init(inode, dir, mode);
+    retval = new_inode_init(inode, parent_dir, mode);
     if (retval) {
         return retval;
     }
 
-    lock_kernel();
+    reiserfs_write_lock(parent_dir->i_sb);
     item_len = ROUND_UP (strlen (symname));
-    if (item_len > MAX_DIRECT_ITEM_LEN (dir->i_sb->s_blocksize)) {
+    if (item_len > MAX_DIRECT_ITEM_LEN (parent_dir->i_sb->s_blocksize)) {
 	retval =  -ENAMETOOLONG;
 	drop_new_inode(inode);
 	goto out_failed;
     }
   
-    name = reiserfs_kmalloc (item_len, GFP_NOFS, dir->i_sb);
+    name = reiserfs_kmalloc (item_len, GFP_NOFS, parent_dir->i_sb);
     if (!name) {
 	drop_new_inode(inode);
 	retval =  -ENOMEM;
@@ -998,17 +921,17 @@ static int reiserfs_symlink (struct inode * dir, struct dentry * dentry, const c
     memcpy (name, symname, strlen (symname));
     padd_item (name, item_len, strlen (symname));
 
-    journal_begin(&th, dir->i_sb, jbegin_count) ;
+    journal_begin(&th, parent_dir->i_sb, jbegin_count) ;
 
-    retval = reiserfs_new_inode (&th, dir, mode, name, strlen (symname), 
+    retval = reiserfs_new_inode (&th, parent_dir, mode, name, strlen (symname), 
                                  dentry, inode);
-    reiserfs_kfree (name, item_len, dir->i_sb);
+    reiserfs_kfree (name, item_len, parent_dir->i_sb);
     if (retval) { /* reiserfs_new_inode iputs for us */
 	goto out_failed;
     }
 
     reiserfs_update_inode_transaction(inode) ;
-    reiserfs_update_inode_transaction(dir) ;
+    reiserfs_update_inode_transaction(parent_dir) ;
 
     inode->i_op = &page_symlink_inode_operations;
     inode->i_mapping->a_ops = &reiserfs_address_space_operations;
@@ -1017,31 +940,23 @@ static int reiserfs_symlink (struct inode * dir, struct dentry * dentry, const c
     //
     //reiserfs_update_sd (&th, inode, READ_BLOCKS);
 
-    retval = reiserfs_add_entry (&th, dir, dentry->d_name.name, dentry->d_name.len, 
-				 inode, 1/*visible*/);
+    retval = reiserfs_add_entry (&th, parent_dir, dentry->d_name.name, 
+                                 dentry->d_name.len, inode, 1/*visible*/);
     if (retval) {
 	inode->i_nlink--;
 	reiserfs_update_sd (&th, inode);
-	journal_end(&th, dir->i_sb, jbegin_count) ;
+	journal_end(&th, parent_dir->i_sb, jbegin_count) ;
 	iput (inode);
 	goto out_failed;
     }
 
     d_instantiate(dentry, inode);
-    journal_end(&th, dir->i_sb, jbegin_count) ;
+    journal_end(&th, parent_dir->i_sb, jbegin_count) ;
 out_failed:
-    unlock_kernel();
+    reiserfs_write_unlock(parent_dir->i_sb);
     return retval;
 }
 
-
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct dentry * dentry)
 {
     int retval;
@@ -1049,11 +964,12 @@ static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct
     int windex ;
     struct reiserfs_transaction_handle th ;
     int jbegin_count = JOURNAL_PER_BALANCE_CNT * 3; 
+    time_t ctime;
 
-    lock_kernel();
+    reiserfs_write_lock(dir->i_sb);
     if (inode->i_nlink >= REISERFS_LINK_MAX) {
 	//FIXME: sd_nlink is 32 bit for new files
-	unlock_kernel();
+	reiserfs_write_unlock(dir->i_sb);
 	return -EMLINK;
     }
 
@@ -1070,19 +986,20 @@ static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct
     if (retval) {
 	pop_journal_writer(windex) ;
 	journal_end(&th, dir->i_sb, jbegin_count) ;
-	unlock_kernel();
+	reiserfs_write_unlock(dir->i_sb);
 	return retval;
     }
 
     inode->i_nlink++;
-    inode->i_ctime = CURRENT_TIME;
+    ctime = CURRENT_TIME;
+    inode->i_ctime = ctime;
     reiserfs_update_sd (&th, inode);
 
     atomic_inc(&inode->i_count) ;
     d_instantiate(dentry, inode);
     pop_journal_writer(windex) ;
     journal_end(&th, dir->i_sb, jbegin_count) ;
-    unlock_kernel();
+    reiserfs_write_unlock(dir->i_sb);
     return 0;
 }
 
@@ -1129,14 +1046,6 @@ static void set_ino_in_dir_entry (struct reiserfs_dir_entry * de, struct key * k
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
-
 /* 
  * process, that is going to call fix_nodes/do_balance must hold only
  * one path. If it holds 2 or more, it can get into endless waiting in
@@ -1151,10 +1060,12 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     INITIALIZE_PATH (dot_dot_entry_path);
     struct item_head new_entry_ih, old_entry_ih, dot_dot_ih ;
     struct reiserfs_dir_entry old_de, new_de, dot_dot_de;
-    struct inode * old_inode, * new_inode;
+    struct inode * old_inode, * new_dentry_inode;
     int windex ;
     struct reiserfs_transaction_handle th ;
     int jbegin_count ; 
+    umode_t old_inode_mode;
+    time_t ctime;
 
 
     /* two balancings: old name removal, new name insertion or "save" link,
@@ -1163,33 +1074,34 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     jbegin_count = JOURNAL_PER_BALANCE_CNT * 3 + 3;
 
     old_inode = old_dentry->d_inode;
-    new_inode = new_dentry->d_inode;
+    new_dentry_inode = new_dentry->d_inode;
 
     // make sure, that oldname still exists and points to an object we
     // are going to rename
     old_de.de_gen_number_bit_string = 0;
-    lock_kernel();
+    reiserfs_write_lock(old_dir->i_sb);
     retval = reiserfs_find_entry (old_dir, old_dentry->d_name.name, old_dentry->d_name.len,
 				  &old_entry_path, &old_de);
     pathrelse (&old_entry_path);
     if (retval == IO_ERROR) {
-	unlock_kernel();
+	reiserfs_write_unlock(old_dir->i_sb);
 	return -EIO;
     }
 
     if (retval != NAME_FOUND || old_de.de_objectid != old_inode->i_ino) {
-	unlock_kernel();
+	reiserfs_write_unlock(old_dir->i_sb);
 	return -ENOENT;
     }
 
-    if (S_ISDIR(old_inode->i_mode)) {
+    old_inode_mode = old_inode->i_mode;
+    if (S_ISDIR(old_inode_mode)) {
 	// make sure, that directory being renamed has correct ".." 
 	// and that its new parent directory has not too many links
 	// already
 
-	if (new_inode) {
-	    if (!reiserfs_empty_dir(new_inode)) {
-		unlock_kernel();
+	if (new_dentry_inode) {
+	    if (!reiserfs_empty_dir(new_dentry_inode)) {
+		reiserfs_write_unlock(old_dir->i_sb);
 		return -ENOTEMPTY;
 	    }
 	}
@@ -1201,13 +1113,13 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
 	retval = reiserfs_find_entry (old_inode, "..", 2, &dot_dot_entry_path, &dot_dot_de);
 	pathrelse (&dot_dot_entry_path);
 	if (retval != NAME_FOUND) {
-	    unlock_kernel();
+	    reiserfs_write_unlock(old_dir->i_sb);
 	    return -EIO;
 	}
 
 	/* inode number of .. must equal old_dir->i_ino */
 	if (dot_dot_de.de_objectid != old_dir->i_ino) {
-	    unlock_kernel();
+	    reiserfs_write_unlock(old_dir->i_sb);
 	    return -EIO;
 	}
     }
@@ -1219,16 +1131,14 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     retval = reiserfs_add_entry (&th, new_dir, new_dentry->d_name.name, new_dentry->d_name.len, 
 				 old_inode, 0);
     if (retval == -EEXIST) {
-	// FIXME: is it possible, that new_inode == 0 here? If yes, it
-	// is not clear how does ext2 handle that
-	if (!new_inode) {
+	if (!new_dentry_inode) {
 	    reiserfs_panic (old_dir->i_sb,
 			    "vs-7050: new entry is found, new inode == 0\n");
 	}
     } else if (retval) {
 	pop_journal_writer(windex) ;
 	journal_end(&th, old_dir->i_sb, jbegin_count) ;
-	unlock_kernel();
+	reiserfs_write_unlock(old_dir->i_sb);
 	return retval;
     }
 
@@ -1240,8 +1150,8 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     */
     reiserfs_update_inode_transaction(old_inode) ;
 
-    if (new_inode) 
-	reiserfs_update_inode_transaction(new_inode) ;
+    if (new_dentry_inode) 
+	reiserfs_update_inode_transaction(new_dentry_inode) ;
 
     while (1) {
 	// look for old name using corresponding entry key (found by reiserfs_find_entry)
@@ -1288,18 +1198,18 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
 	if (item_moved(&new_entry_ih, &new_entry_path) ||
 	    !entry_points_to_object(new_dentry->d_name.name, 
 	                            new_dentry->d_name.len,
-				    &new_de, new_inode) ||
+				    &new_de, new_dentry_inode) ||
 	    item_moved(&old_entry_ih, &old_entry_path) || 
 	    !entry_points_to_object (old_dentry->d_name.name, 
 	                             old_dentry->d_name.len,
 				     &old_de, old_inode)) {
 	    reiserfs_restore_prepared_buffer (old_inode->i_sb, new_de.de_bh);
 	    reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh);
-	    if (S_ISDIR(old_inode->i_mode))
+	    if (S_ISDIR(old_inode_mode))
 		reiserfs_restore_prepared_buffer (old_inode->i_sb, dot_dot_de.de_bh);
 	    continue;
 	}
-	if (S_ISDIR(old_inode->i_mode)) {
+	if (S_ISDIR(old_inode_mode)) {
 	    if ( item_moved(&dot_dot_ih, &dot_dot_entry_path) ||
 		!entry_points_to_object ( "..", 2, &dot_dot_de, old_dir) ) {
 		reiserfs_restore_prepared_buffer (old_inode->i_sb, old_de.de_bh);
@@ -1309,7 +1219,7 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
 	    }
 	}
 
-	RFALSE( S_ISDIR(old_inode->i_mode) && 
+	RFALSE( S_ISDIR(old_inode_mode) && 
 		 !reiserfs_buffer_prepared(dot_dot_de.de_bh), "" );
 
 	break;
@@ -1327,22 +1237,23 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
     new_dir->i_ctime = new_dir->i_mtime = CURRENT_TIME;
 
-    if (new_inode) {
+    if (new_dentry_inode) {
 	// adjust link number of the victim
-	if (S_ISDIR(new_inode->i_mode)) {
-	    new_inode->i_nlink  = 0;
+	if (S_ISDIR(new_dentry_inode->i_mode)) {
+	    new_dentry_inode->i_nlink  = 0;
 	} else {
-	    new_inode->i_nlink--;
+	    new_dentry_inode->i_nlink--;
 	}
-	new_inode->i_ctime = CURRENT_TIME;
+	ctime = CURRENT_TIME;
+	new_dentry_inode->i_ctime = ctime;
     }
 
-    if (S_ISDIR(old_inode->i_mode)) {
+    if (S_ISDIR(old_inode_mode)) {
 	// adjust ".." of renamed directory 
 	set_ino_in_dir_entry (&dot_dot_de, INODE_PKEY (new_dir));
 	journal_mark_dirty (&th, new_dir->i_sb, dot_dot_de.de_bh);
 	
-        if (!new_inode)
+        if (!new_dentry_inode)
 	    /* there (in new_dir) was no directory, so it got new link
 	       (".."  of renamed directory) */
 	    INC_DIR_INODE_NLINK(new_dir);
@@ -1367,15 +1278,15 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     reiserfs_update_sd (&th, old_dir);
     reiserfs_update_sd (&th, new_dir);
 
-    if (new_inode) {
-	if (new_inode->i_nlink == 0)
-	    add_save_link (&th, new_inode, 0/* not truncate */);
-	reiserfs_update_sd (&th, new_inode);
+    if (new_dentry_inode) {
+	if (new_dentry_inode->i_nlink == 0)
+	    add_save_link (&th, new_dentry_inode, 0/* not truncate */);
+	reiserfs_update_sd (&th, new_dentry_inode);
     }
 
     pop_journal_writer(windex) ;
     journal_end(&th, old_dir->i_sb, jbegin_count) ;
-    unlock_kernel();
+    reiserfs_write_unlock(old_dir->i_sb);
     return 0;
 }
 

fs/reiserfs/prints.c

@@ -337,7 +337,7 @@ void reiserfs_panic (struct super_block * sb, const char * fmt, ...)
 
   /* this is not actually called, but makes reiserfs_panic() "noreturn" */
   panic ("REISERFS: panic (device %s): %s\n",
-	 sb ? sb->s_id : "sb == 0", error_buf);
+	 reiserfs_bdevname (sb), error_buf);
 }
 
 
@@ -490,6 +490,7 @@ char * reiserfs_hashname(int code)
 
     return "unknown";
 }
+
 /* return 1 if this is not super block */
 static int print_super_block (struct buffer_head * bh)
 {
@@ -509,8 +510,8 @@ static int print_super_block (struct buffer_head * bh)
 	return 1;
     }
 
-    printk ("%s\'s super block in block %ld\n======================\n",
-            bdevname (bh->b_bdev), bh->b_blocknr);
+    printk ("%s\'s super block is in block %ld\n", bdevname (bh->b_bdev), 
+            bh->b_blocknr);
     printk ("Reiserfs version %s\n", version );
     printk ("Block count %u\n", sb_block_count(rs));
     printk ("Blocksize %d\n", sb_blocksize(rs));

fs/reiserfs/procfs.c

@@ -36,7 +36,7 @@ static struct super_block *procinfo_prologue( kdev_t dev )
 	/* get super-block by device */
 	result = get_super( dev );
 	if( result != NULL ) {
-		if( !reiserfs_is_super( result ) ) {
+		if( !is_reiserfs_super( result ) ) {
 			printk( KERN_DEBUG "reiserfs: procfs-52: "
 				"non-reiserfs super found\n" );
 			drop_super( result );
@@ -500,7 +500,7 @@ int reiserfs_journal_in_proc( char *buffer, char **start, off_t offset,
 			"prepare_retry: \t%12lu\n",
 
                         DJP( jp_journal_1st_block ),
-                        DJP( jp_journal_dev ) == 0 ? "none" : __bdevname(to_kdev_t(DJP( jp_journal_dev ))),
+                        bdevname(SB_JOURNAL(sb)->j_dev_bd),
                         DJP( jp_journal_dev ),
                         DJP( jp_journal_size ),
                         DJP( jp_journal_trans_max ),
@@ -556,13 +556,13 @@ static const char *proc_info_root_name = "fs/reiserfs";
 int reiserfs_proc_info_init( struct super_block *sb )
 {
 	spin_lock_init( & __PINFO( sb ).lock );
-	REISERFS_SB(sb)->procdir = proc_mkdir(sb->s_id, proc_info_root);
+	REISERFS_SB(sb)->procdir = proc_mkdir(reiserfs_bdevname (sb), proc_info_root);
 	if( REISERFS_SB(sb)->procdir ) {
 		REISERFS_SB(sb)->procdir -> owner = THIS_MODULE;
 		return 0;
 	}
 	reiserfs_warning( "reiserfs: cannot create /proc/%s/%s\n",
-			  proc_info_root_name, sb->s_id );
+			  proc_info_root_name, reiserfs_bdevname (sb) );
 	return 1;
 }
 
@@ -573,7 +573,7 @@ int reiserfs_proc_info_done( struct super_block *sb )
 	__PINFO( sb ).exiting = 1;
 	spin_unlock( & __PINFO( sb ).lock );
 	if ( proc_info_root ) {
-		remove_proc_entry( sb->s_id, proc_info_root );
+		remove_proc_entry( reiserfs_bdevname (sb), proc_info_root );
 		REISERFS_SB(sb)->procdir = NULL;
 	}
 	return 0;

fs/reiserfs/stree.c

@@ -1715,13 +1715,13 @@ void reiserfs_do_truncate (struct reiserfs_transaction_handle *th,
 	/* Cut or delete file item. */
 	n_deleted = reiserfs_cut_from_item(th, &s_search_path, &s_item_key, p_s_inode,  page, n_new_file_size);
 	if (n_deleted < 0) {
-	    reiserfs_warning ("vs-5665: reiserfs_truncate_file: cut_from_item failed");
+	    reiserfs_warning ("vs-5665: reiserfs_do_truncate: reiserfs_cut_from_item failed");
 	    reiserfs_check_path(&s_search_path) ;
 	    return;
 	}
 
 	RFALSE( n_deleted > n_file_size,
-		"PAP-5670: reiserfs_truncate_file returns too big number: deleted %d, file_size %lu, item_key %K",
+		"PAP-5670: reiserfs_cut_from_item: too many bytes deleted: deleted %d, file_size %lu, item_key %K",
 		n_deleted, n_file_size, &s_item_key);
 
 	/* Change key to search the last file item. */

fs/reiserfs/super.c

@@ -24,6 +24,8 @@
 #define REISERFS_OLD_BLOCKSIZE 4096
 #define REISERFS_SUPER_MAGIC_STRING_OFFSET_NJ 20
 
+static struct file_system_type reiserfs_fs_type;
+
 const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING;
 const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING;
 const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING;
@@ -55,41 +57,32 @@ static int is_any_reiserfs_magic_string (struct reiserfs_super_block * rs)
 	  is_reiserfs_jr (rs));
 }
 
+int is_reiserfs_super (struct super_block *s)
+{
+	return s -> s_type == & reiserfs_fs_type ;
+}
+
 static int reiserfs_remount (struct super_block * s, int * flags, char * data);
 static int reiserfs_statfs (struct super_block * s, struct statfs * buf);
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static void reiserfs_write_super (struct super_block * s)
 {
 
   int dirty = 0 ;
-  lock_kernel() ;
+  reiserfs_write_lock(s);
   if (!(s->s_flags & MS_RDONLY)) {
     dirty = flush_old_commits(s, 1) ;
   }
   s->s_dirt = dirty;
-  unlock_kernel() ;
+  reiserfs_write_unlock(s);
 }
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static void reiserfs_write_super_lockfs (struct super_block * s)
 {
 
   int dirty = 0 ;
   struct reiserfs_transaction_handle th ;
-  lock_kernel() ;
+  reiserfs_write_lock(s);
   if (!(s->s_flags & MS_RDONLY)) {
     journal_begin(&th, s, 1) ;
     reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
@@ -98,7 +91,7 @@ static void reiserfs_write_super_lockfs (struct super_block * s)
     journal_end(&th, s, 1) ;
   }
   s->s_dirt = dirty;
-  unlock_kernel() ;
+  reiserfs_write_unlock(s);
 }
 
 void reiserfs_unlockfs(struct super_block *s) {
@@ -362,13 +355,6 @@ void remove_save_link (struct inode * inode, int truncate)
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static void reiserfs_put_super (struct super_block * s)
 {
   int i;
@@ -469,7 +455,7 @@ static void reiserfs_dirty_inode (struct inode * inode) {
 	                  inode->i_ino) ;
         return ;
     }
-    lock_kernel() ;
+    reiserfs_write_lock(inode->i_sb);
 
     /* this is really only used for atime updates, so they don't have
     ** to be included in O_SYNC or fsync
@@ -477,7 +463,7 @@ static void reiserfs_dirty_inode (struct inode * inode) {
     journal_begin(&th, inode->i_sb, 1) ;
     reiserfs_update_sd (&th, inode);
     journal_end(&th, inode->i_sb, 1) ;
-    unlock_kernel() ;
+    reiserfs_write_unlock(inode->i_sb);
 }
 
 struct super_operations reiserfs_sops = 
@@ -503,100 +489,190 @@ static struct export_operations reiserfs_export_ops = {
   get_dentry: reiserfs_get_dentry,
 } ;
 
-/* this was (ext2)parse_options */
-static int parse_options (char * options, unsigned long * mount_options, unsigned long * blocks, char **jdev_name)
-{
-    char * this_char;
+/* this struct is used in reiserfs_getopt () for containing the value for those
+   mount options that have values rather than being toggles. */
+typedef struct {
     char * value;
+    int bitmask; /* bit which is to be set in mount_options bitmask when this
+                    value is found, 0 is no bits are to be set */
+} arg_desc_t;
+
+
+/* this struct is used in reiserfs_getopt() for describing the set of reiserfs
+   mount options */
+typedef struct {
+    char * option_name;
+    int arg_required; /* 0 if argument is not required, not 0 otherwise */
+    const arg_desc_t * values; /* list of values accepted by an option */
+    int bitmask;  /* bit which is to be set in mount_options bitmask when this
+		     option is selected, 0 is not bits are to be set */
+} opt_desc_t;
+
+/* possible values for "-o block-allocator=" and bits which are to be set in
+   s_mount_opt of reiserfs specific part of in-core super block */
+const arg_desc_t balloc[] = {
+    {"noborder", REISERFS_NO_BORDER},
+    {"no_unhashed_relocation", REISERFS_NO_UNHASHED_RELOCATION},
+    {"hashed_relocation", REISERFS_HASHED_RELOCATION},
+    {"test4", REISERFS_TEST4},
+    {NULL, -1}
+};
+
+
+/* proceed only one option from a list *cur - string containing of mount options
+   opts - array of options which are accepted
+   opt_arg - if option is found and requires an argument and if it is specifed
+   in the input - pointer to the argument is stored here
+   bit_flags - if option requires to set a certain bit - it is set here
+   return -1 if unknown option is found, opt->arg_required otherwise */
+static int reiserfs_getopt (char ** cur, opt_desc_t * opts, char ** opt_arg,
+			    unsigned long * bit_flags)
+{
+    char * p;
+    /* foo=bar, 
+       ^   ^  ^
+       |   |  +-- option_end
+       |   +-- arg_start
+       +-- option_start
+    */
+    const opt_desc_t * opt;
+    const arg_desc_t * arg;
+    
+    
+    p = *cur;
+    
+    /* assume argument cannot contain commas */
+    *cur = strchr (p, ',');
+    if (*cur) {
+	*(*cur) = '\0';
+	(*cur) ++;
+    }
+    
+    /* for every option in the list */
+    for (opt = opts; opt->option_name; opt ++) {
+	if (!strncmp (p, opt->option_name, strlen (opt->option_name))) {
+	    if (bit_flags && opt->bitmask != -1)
+		set_bit (opt->bitmask, bit_flags);
+	    break;
+	}
+    }
+    if (!opt->option_name) {
+	printk ("reiserfs_getopt: unknown option \"%s\"\n", p);
+	return -1;
+    }
+    
+    p += strlen (opt->option_name);
+    switch (*p) {
+    case '=':
+	if (!opt->arg_required) {
+	    printk ("reiserfs_getopt: the option \"%s\" does not require an argument\n",
+		    opt->option_name);
+	    return -1;
+	}
+	break;
+	
+    case 0:
+	if (opt->arg_required) {
+	    printk ("reiserfs_getopt: the option \"%s\" requires an argument\n", opt->option_name);
+	    return -1;
+	}
+	break;
+    default:
+	printk ("reiserfs_getopt: head of option \"%s\" is only correct\n", opt->option_name);
+	return -1;
+    }
+	
+    /* move to the argument, or to next option if argument is not required */
+    p ++;
+    
+    if ( opt->arg_required && !strlen (p) ) {
+	/* this catches "option=," */
+	printk ("reiserfs_getopt: empty argument for \"%s\"\n", opt->option_name);
+	return -1;
+    }
+    
+    if (!opt->values) {
+	/* *opt_arg contains pointer to argument */
+	*opt_arg = p;
+	return opt->arg_required;
+    }
+    
+    /* values possible for this option are listed in opt->values */
+    for (arg = opt->values; arg->value; arg ++) {
+	if (!strcmp (p, arg->value)) {
+	    if (bit_flags && arg->bitmask != -1 )
+		set_bit (arg->bitmask, bit_flags);
+	    return opt->arg_required;
+	}
+    }
+    
+    printk ("reiserfs_getopt: bad value \"%s\" for option \"%s\"\n", p, opt->option_name);
+    return -1;
+}
+
+
+/* returns 0 if something is wrong in option string, 1 - otherwise */
+static int reiserfs_parse_options (char * options, /* string given via mount's -o */
+				   unsigned long * mount_options,
+				   /* after the parsing phase, contains the
+				      collection of bitflags defining what
+				      mount options were selected. */
+				   unsigned long * blocks, /* strtol-ed from NNN of resize=NNN */
+				   char ** jdev_name)
+{
+    int c;
+    char * arg = NULL;
+    char * pos;
+    opt_desc_t opts[] = {
+		{"notail", 0, 0, NOTAIL},
+		{"conv", 0, 0, REISERFS_CONVERT}, 
+		{"attrs", 0, 0, REISERFS_ATTRS}, 
+		{"nolog", 0, 0, -1},
+		{"replayonly", 0, 0, REPLAYONLY},
+		
+		{"block-allocator", 'a', balloc, -1}, 
+		
+		{"resize", 'r', 0, -1},
+		{"jdev", 'j', 0, -1},
+		{NULL, 0, 0, -1}
+    };
 	
     *blocks = 0;
-    if (!options)
+    if (!options || !*options)
 	/* use default configuration: create tails, journaling on, no
 	   conversion to newest format */
 	return 1;
-    while ((this_char = strsep (&options, ",")) != NULL) {
-	if (!*this_char)
-	    continue;
-	if ((value = strchr (this_char, '=')) != NULL)
-	    *value++ = 0;
-	if (!strcmp (this_char, "notail")) {
-	    set_bit (NOTAIL, mount_options);
-	} else if (!strcmp (this_char, "conv")) {
-	    // if this is set, we update super block such that
-	    // the partition will not be mounable by 3.5.x anymore
-	    set_bit (REISERFS_CONVERT, mount_options);
-	} else if (!strcmp (this_char, "noborder")) {
-				/* this is used for benchmarking
-                                   experimental variations, it is not
-                                   intended for users to use, only for
-                                   developers who want to casually
-                                   hack in something to test */
-	    set_bit (REISERFS_NO_BORDER, mount_options);
-	} else if (!strcmp (this_char, "no_unhashed_relocation")) {
-	    set_bit (REISERFS_NO_UNHASHED_RELOCATION, mount_options);
-	} else if (!strcmp (this_char, "hashed_relocation")) {
-	    set_bit (REISERFS_HASHED_RELOCATION, mount_options);
-	} else if (!strcmp (this_char, "test4")) {
-	    set_bit (REISERFS_TEST4, mount_options);
-	} else if (!strcmp (this_char, "nolog")) {
-	    reiserfs_warning("reiserfs: nolog mount option not supported yet\n");
-	} else if (!strcmp (this_char, "replayonly")) {
-	    set_bit (REPLAYONLY, mount_options);
-	} else if (!strcmp (this_char, "resize")) {
-	    if (value && *value){
-		*blocks = simple_strtoul (value, &value, 0);
-	    } else {
-	  	printk("reiserfs: resize option requires a value\n");
+    
+    for (pos = options; pos; ) {
+	c = reiserfs_getopt (&pos, opts, &arg, mount_options);
+	if (c == -1)
+	    /* wrong option is given */
+	    return 0;
+	
+	if (c == 'r') {
+	    char * p;
+	    
+	    p = 0;
+	    /* "resize=NNN" */
+	    *blocks = simple_strtoul (arg, &p, 0);
+	    if (*p != '\0') {
+		/* NNN does not look like a number */
+		printk ("reiserfs_parse_options: bad value %s\n", arg);
 		return 0;
 	    }
-	} else if (!strcmp (this_char, "hash")) {
-	    if (value && *value) {
-		/* if they specify any hash option, we force detection
-		** to make sure they aren't using the wrong hash
-		*/
-	        if (!strcmp(value, "rupasov")) {
-		    set_bit (FORCE_RUPASOV_HASH, mount_options);
-		    set_bit (FORCE_HASH_DETECT, mount_options);
-		} else if (!strcmp(value, "tea")) {
-		    set_bit (FORCE_TEA_HASH, mount_options);
-		    set_bit (FORCE_HASH_DETECT, mount_options);
-		} else if (!strcmp(value, "r5")) {
-		    set_bit (FORCE_R5_HASH, mount_options);
-		    set_bit (FORCE_HASH_DETECT, mount_options);
-		} else if (!strcmp(value, "detect")) {
-		    set_bit (FORCE_HASH_DETECT, mount_options);
-		} else {
-		    printk("reiserfs: invalid hash function specified\n") ;
-		    return 0 ;
 	}
-	    } else {
-	  	printk("reiserfs: hash option requires a value\n");
-		return 0 ;
-	    }
-	} else if (!strcmp (this_char, "jdev")) {
-	    if (value && *value && jdev_name) {
-		    *jdev_name = value;
-	    } else {
-		    printk("reiserfs: jdev option requires a value\n");
-		    return 0 ;
+
+	if (c == 'j') {
+	    if (arg && *arg && jdev_name) {
+		*jdev_name = arg;
 	    }
-	} else {
-	    printk ("reiserfs: Unrecognized mount option %s\n", this_char);
-	    return 0;
 	}
     }
+    
     return 1;
 }
 
-
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
-static int reiserfs_remount (struct super_block * s, int * flags, char * data)
+static int reiserfs_remount (struct super_block * s, int * mount_flags, char * arg)
 {
   struct reiserfs_super_block * rs;
   struct reiserfs_transaction_handle th ;
@@ -604,8 +680,9 @@ static int reiserfs_remount (struct super_block * s, int * flags, char * data)
   unsigned long mount_options;
 
   rs = SB_DISK_SUPER_BLOCK (s);
-  if (!parse_options(data, &mount_options, &blocks, NULL))
-  	return 0;
+
+  if (!reiserfs_parse_options(arg, &mount_options, &blocks, NULL))
+    return -EINVAL;
   
   if(blocks) {
     int rc = reiserfs_resize(s, blocks);
@@ -613,12 +690,11 @@ static int reiserfs_remount (struct super_block * s, int * flags, char * data)
       return rc;
   }
 
-  if ((unsigned long)(*flags & MS_RDONLY) == (s->s_flags & MS_RDONLY)) {
-    /* there is nothing to do to remount read-only fs as read-only fs */
+  if (*mount_flags & MS_RDONLY) {
+    /* remount rean-only */
+    if (s->s_flags & MS_RDONLY)
+      /* it is read-only already */
       return 0;
-  }
-  
-  if (*flags & MS_RDONLY) {
     /* try to remount file system with read-only permissions */
     if (sb_umount_state(rs) == REISERFS_VALID_FS || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
       return 0;
@@ -649,7 +725,7 @@ static int reiserfs_remount (struct super_block * s, int * flags, char * data)
   SB_JOURNAL(s)->j_must_wait = 1 ;
   journal_end(&th, s, 10) ;
 
-  if (!( *flags & MS_RDONLY ) )
+  if (!( *mount_flags & MS_RDONLY ) )
     finish_unfinished( s );
 
   return 0;
@@ -658,14 +734,14 @@ static int reiserfs_remount (struct super_block * s, int * flags, char * data)
 
 static int read_bitmaps (struct super_block * s)
 {
-    int i, bmp;
+    int i, bmap_nr;
 
     SB_AP_BITMAP (s) = reiserfs_kmalloc (sizeof (struct buffer_head *) * SB_BMAP_NR(s), GFP_NOFS, s);
     if (SB_AP_BITMAP (s) == 0)
 	return 1;
-    for (i = 0, bmp = REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
-	 i < SB_BMAP_NR(s); i++, bmp = s->s_blocksize * 8 * i) {
-	SB_AP_BITMAP (s)[i] = sb_getblk(s, bmp);
+    for (i = 0, bmap_nr = REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
+	 i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) {
+	SB_AP_BITMAP (s)[i] = sb_getblk(s, bmap_nr);
 	if (!buffer_uptodate(SB_AP_BITMAP(s)[i]))
 	    ll_rw_block(READ, 1, SB_AP_BITMAP(s) + i);
     }
@@ -735,7 +811,7 @@ static int read_super_block (struct super_block * s, int offset)
     if (!bh) {
       printk ("sh-2006: read_super_block: "
               "bread failed (dev %s, block %lu, size %lu)\n",
-              s->s_id, offset / s->s_blocksize, s->s_blocksize);
+              reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
       return 1;
     }
  
@@ -755,7 +831,7 @@ static int read_super_block (struct super_block * s, int offset)
     if (!bh) {
 	printk("sh-2007: read_super_block: "
                 "bread failed (dev %s, block %lu, size %lu)\n",
-                s->s_id, offset / s->s_blocksize, s->s_blocksize);
+                reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
 	return 1;
     }
     
@@ -763,7 +839,7 @@ static int read_super_block (struct super_block * s, int offset)
     if (sb_blocksize(rs) != s->s_blocksize) {
 	printk ("sh-2011: read_super_block: "
 		"can't find a reiserfs filesystem on (dev %s, block %lu, size %lu)\n",
-		s->s_id, bh->b_blocknr, s->s_blocksize);
+		reiserfs_bdevname (s), bh->b_blocknr, s->s_blocksize);
 	brelse (bh);
 	return 1;
     }
@@ -772,7 +848,7 @@ static int read_super_block (struct super_block * s, int offset)
        brelse(bh) ;
        printk("dev %s: Unfinished reiserfsck --rebuild-tree run detected. Please run\n"
               "reiserfsck --rebuild-tree and wait for a completion. If that fails\n"
-              "get newer reiserfsprogs package\n", s->s_id);
+              "get newer reiserfsprogs package\n", reiserfs_bdevname (s));
        return 1;
     }
 
@@ -884,7 +960,7 @@ __u32 find_hash_out (struct super_block * s)
 	     ( (r5hash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ) {
 	    reiserfs_warning("reiserfs: Unable to automatically detect hash"
 		"function for device %s\n"
-		"please mount with -o hash={tea,rupasov,r5}\n", s->s_id);
+		"please mount with -o hash={tea,rupasov,r5}\n", reiserfs_bdevname (s));
 	    hash = UNSET_HASH;
 	    break;
 	}
@@ -896,7 +972,7 @@ __u32 find_hash_out (struct super_block * s)
 	    hash = R5_HASH;
 	else {
 	    reiserfs_warning("reiserfs: Unrecognised hash function for "
-			     "device %s\n", s->s_id);
+			     "device %s\n", reiserfs_bdevname (s));
 	    hash = UNSET_HASH;
 	}
     } while (0);
@@ -990,14 +1066,7 @@ int function2code (hashf_t func)
     return 0;
 }
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
-static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
+static int reiserfs_fill_super (struct super_block * s, void * data, int silent)
 {
     struct inode *root_inode;
     int j;
@@ -1009,21 +1078,24 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
     struct reiserfs_super_block * rs;
     char *jdev_name;
     struct reiserfs_sb_info *sbi;
+    int errval = -EINVAL;
 
     sbi = kmalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
-    if (!sbi)
-	return -ENOMEM;
+    if (!sbi) {
+	errval = -ENOMEM;
+	goto error;
+    }
     s->u.generic_sbp = sbi;
     memset (sbi, 0, sizeof (struct reiserfs_sb_info));
 
     jdev_name = NULL;
-    if (parse_options ((char *) data, &(sbi->s_mount_opt), &blocks, &jdev_name) == 0) {
-	return -EINVAL;
+    if (reiserfs_parse_options ((char *) data, &(sbi->s_mount_opt), &blocks, &jdev_name) == 0) {
+	goto error;
     }
 
     if (blocks) {
-  	printk("reserfs: resize option for remount only\n");
-	return -EINVAL;
+  	printk("jmacd-7: reiserfs_fill_super: resize option for remount only\n");
+	goto error;
     }	
 
     /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
@@ -1031,14 +1103,14 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
       old_format = 1;
     /* try new format (64-th 1k block), which can contain reiserfs super block */
     else if (read_super_block (s, REISERFS_DISK_OFFSET_IN_BYTES)) {
-      printk("sh-2021: reiserfs_fill_super: can not find reiserfs on %s\n", s->s_id);
+      printk("sh-2021: reiserfs_fill_super: can not find reiserfs on %s\n", reiserfs_bdevname (s));
       goto error;    
     }
     sbi->s_mount_state = SB_REISERFS_STATE(s);
     sbi->s_mount_state = REISERFS_VALID_FS ;
 
     if (old_format ? read_old_bitmaps(s) : read_bitmaps(s)) { 
-	printk ("reiserfs_fill_super: unable to read bitmap\n");
+	printk ("jmacd-8: reiserfs_fill_super: unable to read bitmap\n");
 	goto error;
     }
 #ifdef CONFIG_REISERFS_CHECK
@@ -1056,7 +1128,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
 			 */
     }
     if (reread_meta_blocks(s)) {
-	printk("reiserfs_fill_super: unable to reread meta blocks after journal init\n") ;
+	printk("jmacd-9: reiserfs_fill_super: unable to reread meta blocks after journal init\n") ;
 	goto error ;
     }
 
@@ -1071,7 +1143,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
     args.dirid = REISERFS_ROOT_PARENT_OBJECTID ;
     root_inode = iget5_locked (s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, reiserfs_init_locked_inode, (void *)(&args));
     if (!root_inode) {
-	printk ("reiserfs_fill_super: get root inode failed\n");
+	printk ("jmacd-10: reiserfs_fill_super: get root inode failed\n");
 	goto error;
     }
 
@@ -1155,7 +1227,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
     reiserfs_proc_register( s, "journal", reiserfs_journal_in_proc );
     init_waitqueue_head (&(sbi->s_wait));
 
-    return 0;
+    return (0);
 
  error:
     if (jinit_done) { /* kill the commit thread, free journal ram */
@@ -1172,96 +1244,85 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
     if (SB_BUFFER_WITH_SB (s))
 	brelse(SB_BUFFER_WITH_SB (s));
 
+    if (sbi != NULL) {
 	kfree(sbi);
-    s->u.generic_sbp = NULL;
+    }
 
-    return -EINVAL;
+    s->u.generic_sbp = NULL;
+    return errval;
 }
 
 
-//
-// a portion of this function, particularly the VFS interface portion,
-// was derived from minix or ext2's analog and evolved as the
-// prototype did. You should be able to tell which portion by looking
-// at the ext2 code and comparing. It's subfunctions contain no code
-// used as a template unless they are so labeled.
-//
 static int reiserfs_statfs (struct super_block * s, struct statfs * buf)
 {
   struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s);
   
-				/* changed to accomodate gcc folks.*/
-  buf->f_type    =  REISERFS_SUPER_MAGIC;
-  buf->f_bsize   = s->s_blocksize;
-  buf->f_blocks  = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
+  buf->f_namelen = (REISERFS_MAX_NAME (s->s_blocksize));
+  buf->f_ffree   = -1;
+  buf->f_files   = -1;
   buf->f_bfree   = sb_free_blocks(rs);
   buf->f_bavail  = buf->f_bfree;
-  buf->f_files   = -1;
-  buf->f_ffree   = -1;
-  buf->f_namelen = (REISERFS_MAX_NAME_LEN (s->s_blocksize));
+  buf->f_blocks  = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
+  buf->f_bsize   = s->s_blocksize;
+  /* changed to accomodate gcc folks.*/
+  buf->f_type    =  REISERFS_SUPER_MAGIC;
   return 0;
 }
 
-static struct super_block *reiserfs_get_sb(struct file_system_type *fs_type,
-	int flags, char *dev_name, void *data)
+static struct super_block*
+get_super_block (struct file_system_type *fs_type,
+		 int                      flags,
+		 char                    *dev_name,
+		 void                    *data)
 {
-	return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super);
+	return get_sb_bdev (fs_type, flags, dev_name, data, reiserfs_fill_super);
 }
 
-static struct file_system_type reiserfs_fs_type = {
-	owner:		THIS_MODULE,
-	name:		"reiserfs",
-	get_sb:		reiserfs_get_sb,
-	kill_sb:	kill_block_super,
-	fs_flags:	FS_REQUIRES_DEV,
-};
-
-int reiserfs_is_super(struct super_block *s)
+static int __init
+init_reiserfs_fs ( void )
 {
-	return s->s_type == &reiserfs_fs_type;
-}
+	int ret;
 
-//
-// this is exactly what 2.3.99-pre9's init_ext2_fs is
-//
-static int __init init_reiserfs_fs (void)
-{
-	int err = init_inodecache();
-	if (err)
-		goto out1;
-	reiserfs_proc_info_global_init();
-	reiserfs_proc_register_global( "version", 
-				       reiserfs_global_version_in_proc );
-        err = register_filesystem(&reiserfs_fs_type);
-	if (err)
-		goto out;
+	if ((ret = init_inodecache ())) {
+		return ret;
+	}
+
+	reiserfs_proc_info_global_init ();
+	reiserfs_proc_register_global ("version", reiserfs_global_version_in_proc);
+
+        ret = register_filesystem (& reiserfs_fs_type);
+
+	if (ret == 0) {
 		return 0;
-out:
-	reiserfs_proc_unregister_global( "version" );
-	reiserfs_proc_info_global_done();
-	destroy_inodecache();
-out1:
-	return err;
-}
+	}
 
+	reiserfs_proc_unregister_global ("version");
+	reiserfs_proc_info_global_done ();
+	destroy_inodecache ();
 
-MODULE_DESCRIPTION("ReiserFS journaled filesystem");
-MODULE_AUTHOR("Hans Reiser <reiser@namesys.com>");
-MODULE_LICENSE("GPL");
+	return ret;
+}
 
-//
-// this is exactly what 2.3.99-pre9's init_ext2_fs is
-//
-static void __exit exit_reiserfs_fs(void)
+static void __exit
+exit_reiserfs_fs ( void )
 {
-	reiserfs_proc_unregister_global( "version" );
-	reiserfs_proc_info_global_done();
-        unregister_filesystem(&reiserfs_fs_type);
-	destroy_inodecache();
+	reiserfs_proc_unregister_global ("version");
+	reiserfs_proc_info_global_done ();
+        unregister_filesystem (& reiserfs_fs_type);
+	destroy_inodecache ();
 }
 
-module_init(init_reiserfs_fs) ;
-module_exit(exit_reiserfs_fs) ;
-
+static struct file_system_type reiserfs_fs_type = {
+	owner: THIS_MODULE,
+	name: "reiserfs",
+	get_sb: get_super_block,
+	kill_sb: kill_block_super,
+	fs_flags: FS_REQUIRES_DEV,
+};
 
+MODULE_DESCRIPTION ("ReiserFS journaled filesystem");
+MODULE_AUTHOR      ("Hans Reiser <reiser@namesys.com>");
+MODULE_LICENSE     ("GPL");
 
+module_init (init_reiserfs_fs);
+module_exit (exit_reiserfs_fs);

fs/reiserfs/tail_conversion.c

@@ -214,7 +214,7 @@ int indirect2direct (struct reiserfs_transaction_handle *th,
     copy_item_head (&s_ih, PATH_PITEM_HEAD(p_s_path));
 
     tail_len = (n_new_file_size & (n_block_size - 1));
-    if (!old_format_only (p_s_sb))
+    if (get_inode_sd_version (p_s_inode) == STAT_DATA_V2)
 	round_tail_len = ROUND_UP (tail_len);
     else
 	round_tail_len = tail_len;

include/linux/reiserfs_fs.h

@@ -20,6 +20,7 @@
 #include <asm/unaligned.h>
 #include <linux/bitops.h>
 #include <linux/proc_fs.h>
+#include <linux/smp_lock.h>
 #include <linux/buffer_head.h>
 #include <linux/reiserfs_fs_i.h>
 #include <linux/reiserfs_fs_sb.h>
@@ -1062,9 +1063,7 @@ static inline int entry_length (const struct buffer_head * bh,
 #define B_I_E_NAME(bh,ih,entry_num) ((char *)(bh->b_data + ih_location(ih) + deh_location(B_I_DEH(bh,ih)+(entry_num))))
 
 // two entries per block (at least)
-//#define REISERFS_MAX_NAME_LEN(block_size) 
-//((block_size - BLKH_SIZE - IH_SIZE - DEH_SIZE * 2) / 2)
-#define REISERFS_MAX_NAME_LEN(block_size) 255
+#define REISERFS_MAX_NAME(block_size) 255
 
 
 /* this structure is used for operations on directory entries. It is
@@ -1654,6 +1653,11 @@ extern wait_queue_head_t reiserfs_commit_thread_wait ;
 */
 #define JOURNAL_BUFFER(j,n) ((j)->j_ap_blocks[((j)->j_start + (n)) % JOURNAL_BLOCK_COUNT])
 
+// We need these to make journal.c code more readable
+#define journal_get_hash_table(s, block) __get_hash_table(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize)
+#define journal_getblk(s, block) __getblk(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize)
+#define journal_bread(s, block) __bread(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize)
+
 void reiserfs_commit_for_inode(struct inode *) ;
 void reiserfs_update_inode_transaction(struct inode *) ;
 void reiserfs_wait_on_write_block(struct super_block *s) ;
@@ -2074,6 +2078,12 @@ int reiserfs_unpack (struct inode * inode, struct file * filp);
 /* ioctl's command */
 #define REISERFS_IOC_UNPACK		_IOW(0xCD,1,long)
 
+/* Locking primitives */
+/* Right now we are still falling back to (un)lock_kernel, but eventually that
+   would evolve into real per-fs locks */
+#define reiserfs_write_lock( sb ) lock_kernel()
+#define reiserfs_write_unlock( sb ) unlock_kernel()
+ 			         
 #endif /* _LINUX_REISER_FS_H */
 
 

include/linux/reiserfs_fs_sb.h

@@ -408,6 +408,8 @@ struct reiserfs_sb_info
 #define REISERFS_HASHED_RELOCATION 13
 #define REISERFS_TEST4 14 
 
+#define REISERFS_ATTRS 15
+
 #define REISERFS_TEST1 11
 #define REISERFS_TEST2 12
 #define REISERFS_TEST3 13
@@ -430,7 +432,7 @@ struct reiserfs_sb_info
 
 
 void reiserfs_file_buffer (struct buffer_head * bh, int list);
-int reiserfs_is_super(struct super_block *s)  ;
+int is_reiserfs_super(struct super_block *s)  ;
 int journal_mark_dirty(struct reiserfs_transaction_handle *, struct super_block *, struct buffer_head *bh) ;
 int flush_old_commits(struct super_block *s, int) ;
 int show_reiserfs_locks(void) ;
@@ -456,4 +458,12 @@ int reiserfs_resize(struct super_block *, unsigned long) ;
 #define SB_JOURNAL_MAX_TRANS_AGE(s)  (SB_JOURNAL(s)->s_journal_max_trans_age)
 #define SB_JOURNAL_DEV(s)            (SB_JOURNAL(s)->j_dev)
 
+/* A safe version of the "bdevname", which returns the "s_id" field of
+ * a superblock or else "Null superblock" if the super block is NULL.
+ */
+static inline char *reiserfs_bdevname(struct super_block *s)
+{
+        return (s == NULL) ? "Null superblock" : s -> s_id;
+}
+
 #endif	/* _LINUX_REISER_FS_SB */