* bfs_fsync() now locks the inode as it must do.

* added a IsLocked() method to ReadLocked.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17057 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/file_systems/bfs/Lock.h

@@ -1,12 +1,11 @@
+/* Lock - simple semaphores, read/write lock implementation
+ * Roughly based on a Be sample code written by Nathan Schrenk.
+ *
+ * Copyright 2001-2006, Axel Dörfler, [email protected].
+ * This file may be used under the terms of the MIT License.
+ */
 #ifndef LOCK_H
 #define LOCK_H
-/* Lock - simple semaphores, read/write lock implementation
-**
-** Initial version by Axel Dörfler, [email protected]
-** Roughly based on a Be sample code written by Nathan Schrenk.
-**
-** This file may be used under the terms of the OpenBeOS License.
-*/
 
 
 #include <KernelExport.h>
@@ -444,6 +443,11 @@ class ReadLocked {
 				fLock.Unlock();
 		}
 	
+		status_t IsLocked()
+		{
+			return fStatus;
+		}
+
 	private:
 		ReadWriteLock	&fLock;
 		status_t		fStatus;

src/add-ons/kernel/file_systems/bfs/kernel_interface.cpp

@@ -1,4 +1,4 @@
-/* kernel_interface - file system interface to BeOS' vnode layer
+/* kernel_interface - file system interface to Haiku's vnode layer
  *
  * Copyright 2001-2006, Axel Dörfler, [email protected].
  * This file may be used under the terms of the MIT License.
@@ -657,6 +657,12 @@ bfs_fsync(void *_ns, void *_node)
 		return B_BAD_VALUE;
 
 	Inode *inode = (Inode *)_node;
+	ReadLocked locked(inode->Lock());
+
+	status_t status = locked.IsLocked();
+	if (status < B_OK)
+		RETURN_ERROR(status);
+
 	return inode->Sync();
 }