From: Julia Lawall <[EMAIL PROTECTED]>

if (...) BUG(); should be replaced with BUG_ON(...) when the test has no
side-effects to allow a definition of BUG_ON that drops the code completely.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@ disable unlikely @ expression E,f; @@

(
  if (<... f(...) ...>) { BUG(); }
|
- if (unlikely(E)) { BUG(); }
+ BUG_ON(E);
)

@@ expression E,f; @@

(
  if (<... f(...) ...>) { BUG(); }
|
- if (E) { BUG(); }
+ BUG_ON(E);
)
// </smpl>

Signed-off-by: Julia Lawall <[EMAIL PROTECTED]>

---

diff -u -p a/fs/udf/truncate.c b/fs/udf/truncate.c
--- a/fs/udf/truncate.c 2008-02-10 22:34:15.000000000 +0100
+++ b/fs/udf/truncate.c 2008-02-17 16:41:19.000000000 +0100
@@ -224,8 +224,7 @@ void udf_truncate_extents(struct inode *
                                if (indirect_ext_len) {
                                        /* We managed to free all extents in the
                                         * indirect extent - free it too */
-                                       if (!epos.bh)
-                                               BUG();
+                                       BUG_ON(!epos.bh);
                                        udf_free_blocks(sb, inode, epos.block,
                                                        0, indirect_ext_len);
                                } else {
@@ -272,8 +271,7 @@ void udf_truncate_extents(struct inode *
                }
 
                if (indirect_ext_len) {
-                       if (!epos.bh)
-                               BUG();
+                       BUG_ON(!epos.bh);
                        udf_free_blocks(sb, inode, epos.block, 0,
                                        indirect_ext_len);
                } else {
--
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