Added a consistency check.

[linux-2.6.git] / linux-2.6-040-i_mutex-check.patch

diff --git a/linux-2.6-040-i_mutex-check.patch b/linux-2.6-040-i_mutex-check.patch
new file mode 100644 (file)
index 0000000..3cfb78b
--- /dev/null
+++ b/linux-2.6-040-i_mutex-check.patch
@@ -0,0 +1,19 @@
+diff -Nurb linux-2.6.22-20/fs/inode.c linux-2.6.22-40/fs/inode.c
+--- linux-2.6.22-20/fs/inode.c 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-40/fs/inode.c 2008-04-03 16:41:53.000000000 -0400
+@@ -122,6 +122,7 @@
+               inode->i_fop = &empty_fops;
+               inode->i_nlink = 1;
+               atomic_set(&inode->i_writecount, 0);
++              mutex_init(&inode->i_mutex);
+               inode->i_size = 0;
+               inode->i_blocks = 0;
+               inode->i_bytes = 0;
+@@ -1102,6 +1103,7 @@
+ 
+       if (op && op->drop_inode)
+               drop = op->drop_inode;
++      BUG_ON(atomic_read(&inode->i_mutex.count)!=1);
+       drop(inode);
+ }
+