JBD2: replace jbd_kmalloc with kmalloc directly.

This patch cleans up jbd_kmalloc and replace it with kmalloc directly
Signed-off-by: Mingming Cao <cmm@us.ibm.com>

fs/jbd2/journal.c

@@ -654,7 +654,7 @@ static journal_t * journal_init_common (void)
 	journal_t *journal;
 	int err;
 
-	journal = jbd_kmalloc(sizeof(*journal), GFP_KERNEL);
+	journal = kmalloc(sizeof(*journal), GFP_KERNEL);
 	if (!journal)
 		goto fail;
 	memset(journal, 0, sizeof(*journal));
@@ -1618,15 +1618,6 @@ size_t journal_tag_bytes(journal_t *journal)
 		return JBD_TAG_SIZE32;
 }
 
-/*
- * Simple support for retrying memory allocations.  Introduced to help to
- * debug different VM deadlock avoidance strategies.
- */
-void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
-{
-	return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
-}
-
 /*
  * Journal_head storage management
  */

fs/jbd2/transaction.c

@@ -96,8 +96,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
 
 alloc_transaction:
 	if (!journal->j_running_transaction) {
-		new_transaction = jbd_kmalloc(sizeof(*new_transaction),
-						GFP_NOFS);
+		new_transaction = kmalloc(sizeof(*new_transaction),
+						GFP_NOFS|__GFP_NOFAIL);
 		if (!new_transaction) {
 			ret = -ENOMEM;
 			goto out;

include/linux/jbd2.h

@@ -71,13 +71,6 @@ extern u8 jbd2_journal_enable_debug;
 #define jbd_debug(f, a...)	/**/
 #endif
 
-extern void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
-#define jbd_kmalloc(size, flags) \
-	__jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
-#define jbd_rep_kmalloc(size, flags) \
-	__jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
-
-
 static inline void *jbd2_alloc(size_t size, gfp_t flags)
 {
 	return (void *)__get_free_pages(flags, get_order(size));