Merge tag 'v3.9' into v4l_for_linus

Linux 3.9

* tag 'v3.9': (1099 commits)
  Linux 3.9
  vm: add no-mmu vm_iomap_memory() stub
  efivars: only check for duplicates on the registered list
  TTY: fix atime/mtime regression
  aio: fix possible invalid memory access when DEBUG is enabled
  parisc: use spin_lock_irqsave/spin_unlock_irqrestore for PTE updates
  parisc: disable -mlong-calls compiler option for kernel modules
  parisc: uaccess: fix compiler warnings caused by __put_user casting
  parisc: Change kunmap macro to static inline function
  parisc: Provide __ucmpdi2 to resolve undefined references in 32 bit builds.
  sparc64: Fix missing put_cpu_var() in tlb_batch_add_one() when not batching.
  Revert "gpio: pxa: set initcall level to module init"
  efi: Check EFI revision in setup_efi_vars
  x86, efi: Fix a build warning
  Revert "MIPS: page.h: Provide more readable definition for PAGE_MASK."
  kernel/hz.bc: ignore.
  Linux 3.9-rc8
  events: Protect access via task_subsys_state_check()
  net: fix incorrect credentials passing
  x86, microcode: Verify the family before dispatching microcode patching
  ...

1 files changed, 3 insertions, 23 deletions

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 9e5b8c272eec..5a0f781cd729 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -739,12 +739,6 @@ static void blk_add_trace_rq_complete(void *ignore,
 				      struct request_queue *q,
 				      struct request *rq)
 {
-	struct blk_trace *bt = q->blk_trace;
-
-	/* if control ever passes through here, it's a request based driver */
-	if (unlikely(bt && !bt->rq_based))
-		bt->rq_based = true;
-
 	blk_add_trace_rq(q, rq, BLK_TA_COMPLETE);
 }
 
@@ -780,24 +774,10 @@ static void blk_add_trace_bio_bounce(void *ignore,
 	blk_add_trace_bio(q, bio, BLK_TA_BOUNCE, 0);
 }
 
-static void blk_add_trace_bio_complete(void *ignore, struct bio *bio, int error)
+static void blk_add_trace_bio_complete(void *ignore,
+				       struct request_queue *q, struct bio *bio,
+				       int error)
 {
-	struct request_queue *q;
-	struct blk_trace *bt;
-
-	if (!bio->bi_bdev)
-		return;
-
-	q = bdev_get_queue(bio->bi_bdev);
-	bt = q->blk_trace;
-
-	/*
-	 * Request based drivers will generate both rq and bio completions.
-	 * Ignore bio ones.
-	 */
-	if (likely(!bt) || bt->rq_based)
-		return;
-
 	blk_add_trace_bio(q, bio, BLK_TA_COMPLETE, error);
 }