Merge branch 'reiserfs/kill-bkl' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / fs / reiserfs / xattr.c
index 8c7033a8b67e43bed5d0acef901875fc2a22aa14..c3b004ee627b34ec23c459b3e8178b6b166c6fd1 100644 (file)
@@ -83,7 +83,8 @@ static int xattr_unlink(struct inode *dir, struct dentry *dentry)
        BUG_ON(!mutex_is_locked(&dir->i_mutex));
        vfs_dq_init(dir);
 
-       mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+       reiserfs_mutex_lock_nested_safe(&dentry->d_inode->i_mutex,
+                                       I_MUTEX_CHILD, dir->i_sb);
        error = dir->i_op->unlink(dir, dentry);
        mutex_unlock(&dentry->d_inode->i_mutex);
 
@@ -98,7 +99,8 @@ static int xattr_rmdir(struct inode *dir, struct dentry *dentry)
        BUG_ON(!mutex_is_locked(&dir->i_mutex));
        vfs_dq_init(dir);
 
-       mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+       reiserfs_mutex_lock_nested_safe(&dentry->d_inode->i_mutex,
+                                       I_MUTEX_CHILD, dir->i_sb);
        dentry_unhash(dentry);
        error = dir->i_op->rmdir(dir, dentry);
        if (!error)
@@ -235,16 +237,22 @@ static int reiserfs_for_each_xattr(struct inode *inode,
        if (IS_PRIVATE(inode) || get_inode_sd_version(inode) == STAT_DATA_V1)
                return 0;
 
+       reiserfs_write_unlock(inode->i_sb);
        dir = open_xa_dir(inode, XATTR_REPLACE);
        if (IS_ERR(dir)) {
                err = PTR_ERR(dir);
+               reiserfs_write_lock(inode->i_sb);
                goto out;
        } else if (!dir->d_inode) {
                err = 0;
+               reiserfs_write_lock(inode->i_sb);
                goto out_dir;
        }
 
        mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_XATTR);
+
+       reiserfs_write_lock(inode->i_sb);
+
        buf.xadir = dir;
        err = reiserfs_readdir_dentry(dir, &buf, fill_with_dentries, &pos);
        while ((err == 0 || err == -ENOSPC) && buf.count) {
@@ -283,8 +291,9 @@ static int reiserfs_for_each_xattr(struct inode *inode,
                err = journal_begin(&th, inode->i_sb, blocks);
                if (!err) {
                        int jerror;
-                       mutex_lock_nested(&dir->d_parent->d_inode->i_mutex,
-                                         I_MUTEX_XATTR);
+                       reiserfs_mutex_lock_nested_safe(
+                                         &dir->d_parent->d_inode->i_mutex,
+                                         I_MUTEX_XATTR, inode->i_sb);
                        err = action(dir, data);
                        jerror = journal_end(&th, inode->i_sb, blocks);
                        mutex_unlock(&dir->d_parent->d_inode->i_mutex);
@@ -480,11 +489,16 @@ reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *th,
        if (!buffer)
                return lookup_and_delete_xattr(inode, name);
 
+       reiserfs_write_unlock(inode->i_sb);
        dentry = xattr_lookup(inode, name, flags);
-       if (IS_ERR(dentry))
+       if (IS_ERR(dentry)) {
+               reiserfs_write_lock(inode->i_sb);
                return PTR_ERR(dentry);
+       }
 
-       down_write(&REISERFS_I(inode)->i_xattr_sem);
+       down_read(&REISERFS_I(inode)->i_xattr_sem);
+
+       reiserfs_write_lock(inode->i_sb);
 
        xahash = xattr_hash(buffer, buffer_size);
        while (buffer_pos < buffer_size || buffer_pos == 0) {