reiserfs_fs.h, super.c, namei.c, ioctl.c, inode.c, file.c, dir.c:

  reiserfs_write(un)lock introducion. Simple wrapper for now.

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") ;
 
@@ -186,7 +187,7 @@ static int reiserfs_readdir (struct file * filp, void * dirent, filldir_t filldi
     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) ;
@@ -61,7 +61,7 @@ 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;
 }
 
@@ -84,21 +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
@@ -136,7 +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/inode.c

@@ -28,7 +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 */
@@ -53,7 +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, 
@@ -408,10 +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;
 }
 
@@ -545,17 +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;
     }
 
@@ -567,7 +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;
     }
 
@@ -658,7 +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 
@@ -857,7 +857,6 @@ int reiserfs_get_block (struct inode * inode, sector_t block,
 
 
     retval = 0;
-    reiserfs_check_path(&path) ;
 
  failure:
     if (transaction_started) {
@@ -865,7 +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;
 }
@@ -1366,11 +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);
     }
 }
 
@@ -1746,7 +1745,7 @@ void reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps) {
     int error ;
     struct buffer_head *bh = NULL ;
 
-    lock_kernel ();
+    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))) {
@@ -1801,7 +1800,7 @@ void reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps) {
 	page_cache_release(page) ;
     }
 
-    unlock_kernel ();
+    reiserfs_write_unlock(p_s_inode->i_sb);
 }
 
 static int map_block_for_writepage(struct inode *inode, 
@@ -1825,7 +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) ;
 
@@ -1892,7 +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) {
@@ -2064,13 +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) ;
@@ -2079,9 +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/namei.c

@@ -326,18 +326,18 @@ static struct dentry * reiserfs_lookup (struct inode * dir, struct dentry * dent
     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);
     }
@@ -369,15 +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);
@@ -572,7 +572,7 @@ static int reiserfs_create (struct inode * dir, struct dentry *dentry, int 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);
@@ -600,7 +600,7 @@ 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;
 }
 
@@ -619,7 +619,7 @@ static int reiserfs_mknod (struct inode * dir, struct dentry *dentry, int 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);
@@ -649,7 +649,7 @@ 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;
 }
 
@@ -669,7 +669,7 @@ static int reiserfs_mkdir (struct inode * dir, struct dentry *dentry, int 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
@@ -709,7 +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;
 }
 
@@ -740,7 +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") ;
 
@@ -794,7 +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:
@@ -804,7 +804,7 @@ 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;	
 }
 
@@ -824,7 +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") ;
 	
@@ -873,7 +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:
@@ -881,7 +881,7 @@ 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 retval;
 }
 
@@ -904,7 +904,7 @@ static int reiserfs_symlink (struct inode * parent_dir,
         return retval;
     }
 
-    lock_kernel();
+    reiserfs_write_lock(parent_dir->i_sb);
     item_len = ROUND_UP (strlen (symname));
     if (item_len > MAX_DIRECT_ITEM_LEN (parent_dir->i_sb->s_blocksize)) {
 	retval =  -ENAMETOOLONG;
@@ -953,7 +953,7 @@ static int reiserfs_symlink (struct inode * parent_dir,
     d_instantiate(dentry, inode);
     journal_end(&th, parent_dir->i_sb, jbegin_count) ;
 out_failed:
-    unlock_kernel();
+    reiserfs_write_unlock(parent_dir->i_sb);
     return retval;
 }
 
@@ -966,10 +966,10 @@ static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct
     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;
     }
 
@@ -986,7 +986,7 @@ 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;
     }
 
@@ -999,7 +999,7 @@ static int reiserfs_link (struct dentry * old_dentry, struct inode * dir, struct
     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;
 }
 
@@ -1079,17 +1079,17 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     // 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;
     }
 
@@ -1101,7 +1101,7 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
 
 	if (new_dentry_inode) {
 	    if (!reiserfs_empty_dir(new_dentry_inode)) {
-		unlock_kernel();
+		reiserfs_write_unlock(old_dir->i_sb);
 		return -ENOTEMPTY;
 	    }
 	}
@@ -1113,13 +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;
 	}
     }
@@ -1138,7 +1138,7 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
     } 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;
     }
 
@@ -1286,7 +1286,7 @@ static int reiserfs_rename (struct inode * old_dir, struct dentry *old_dentry,
 
     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/super.c

@@ -69,12 +69,12 @@ 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);
 }
 
 static void reiserfs_write_super_lockfs (struct super_block * s)
@@ -82,7 +82,7 @@ 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);
@@ -91,7 +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) {
@@ -455,7 +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
@@ -463,7 +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 = 

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>
@@ -2076,6 +2077,12 @@ 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 */