sound: usb-audio: add workaround for Blue Microphones devices

[safe/jmp/linux-2.6] / block / elevator.c

diff --git a/block/elevator.c b/block/elevator.c
index a029cfe..6f23753 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -33,17 +33,16 @@
 #include <linux/compiler.h>
 #include <linux/delay.h>
 #include <linux/blktrace_api.h>
-#include <trace/block.h>
 #include <linux/hash.h>
 #include <linux/uaccess.h>
 
+#include <trace/events/block.h>
+
 #include "blk.h"
 
 static DEFINE_SPINLOCK(elv_list_lock);
 static LIST_HEAD(elv_list);
 
-DEFINE_TRACE(block_rq_abort);
-
 /*
  * Merge hash stuff.
  */
@@ -54,9 +53,6 @@ static const int elv_hash_shift = 6;
 #define ELV_HASH_ENTRIES       (1 << elv_hash_shift)
 #define rq_hash_key(rq)                (blk_rq_pos(rq) + blk_rq_sectors(rq))
 
-DEFINE_TRACE(block_rq_insert);
-DEFINE_TRACE(block_rq_issue);
-
 /*
  * Query io scheduler to see if the current process issuing bio may be
  * merged with rq.
@@ -104,6 +100,14 @@ int elv_rq_merge_ok(struct request *rq, struct bio *bio)
        if (bio_integrity(bio) != blk_integrity_rq(rq))
                return 0;
 
+       /*
+        * Don't merge if failfast settings don't match
+        */
+       if (bio_failfast_dev(bio)       != blk_failfast_dev(rq)         ||
+           bio_failfast_transport(bio) != blk_failfast_transport(rq)   ||
+           bio_failfast_driver(bio)    != blk_failfast_driver(rq))
+               return 0;
+
        if (!elv_iosched_allow_merge(rq, bio))
                return 0;