reiserfs: open-code reiserfs_mutex_lock_safe() in reiserfs_unpack()

... and have it use inode_lock()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index 57045f423893..2f1ddc908013 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -187,7 +187,11 @@ int reiserfs_unpack(struct inode *inode, struct file *filp)
 	}
 
 	/* we need to make sure nobody is changing the file size beneath us */
-	reiserfs_mutex_lock_safe(&inode->i_mutex, inode->i_sb);
+{
+	int depth = reiserfs_write_unlock_nested(inode->i_sb);
+	inode_lock(inode);
+	reiserfs_write_lock_nested(inode->i_sb, depth);
+}
 
 	reiserfs_write_lock(inode->i_sb);