NFS: Stop sillyname renames and unmounts from racing

[safe/jmp/linux-2.6] / include / linux / jbd.h

diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 1db3b68..d9ecd13 100644 (file)
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -58,7 +58,7 @@
  * CONFIG_JBD_DEBUG is on.
  */
 #define JBD_EXPENSIVE_CHECKING
-extern int journal_enable_debug;
+extern u8 journal_enable_debug;
 
 #define jbd_debug(n, f, a...)                                          \
        do {                                                            \
@@ -72,12 +72,6 @@ extern int journal_enable_debug;
 #define jbd_debug(f, a...)     /**/
 #endif
 
-extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-#define jbd_kmalloc(size, flags) \
-       __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
-       __jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
-
 static inline void *jbd_alloc(size_t size, gfp_t flags)
 {
        return (void *)__get_free_pages(flags, get_order(size));
@@ -254,17 +248,7 @@ typedef struct journal_superblock_s
 #include <linux/fs.h>
 #include <linux/sched.h>
 
-#define JBD_ASSERTIONS
-#ifdef JBD_ASSERTIONS
-#define J_ASSERT(assert)                                               \
-do {                                                                   \
-       if (!(assert)) {                                                \
-               printk (KERN_EMERG                                      \
-                       "Assertion failure in %s() at %s:%d: \"%s\"\n", \
-                       __FUNCTION__, __FILE__, __LINE__, # assert);    \
-               BUG();                                                  \
-       }                                                               \
-} while (0)
+#define J_ASSERT(assert)       BUG_ON(!(assert))
 
 #if defined(CONFIG_BUFFER_DEBUG)
 void buffer_assertion_failure(struct buffer_head *bh);
@@ -280,10 +264,6 @@ void buffer_assertion_failure(struct buffer_head *bh);
 #define J_ASSERT_JH(jh, expr)  J_ASSERT(expr)
 #endif
 
-#else
-#define J_ASSERT(assert)       do { } while (0)
-#endif         /* JBD_ASSERTIONS */
-
 #if defined(JBD_PARANOID_IOFAIL)
 #define J_EXPECT(expr, why...)         J_ASSERT(expr)
 #define J_EXPECT_BH(bh, expr, why...)  J_ASSERT_BH(bh, expr)
@@ -459,6 +439,8 @@ struct transaction_s
        /*
         * Transaction's current state
         * [no locking - only kjournald alters this]
+        * [j_list_lock] guards transition of a transaction into T_FINISHED
+        * state and subsequent call of __journal_drop_transaction()
         * FIXME: needs barriers
         * KLUDGE: [use j_state_lock]
         */