3 files changed, 8 insertions, 5 deletions

diff --git a/block/blktrace.c b/block/blktrace.c
index 92925e7d9e6c..b8c0702777ff 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -69,7 +69,7 @@ static u32 ddir_act[2] __read_mostly = { BLK_TC_ACT(BLK_TC_READ), BLK_TC_ACT(BLK
 /*
  * Bio action bits of interest
  */
-static u32 bio_act[3] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_ACT(BLK_TC_SYNC) };
+static u32 bio_act[5] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_ACT(BLK_TC_SYNC), 0, BLK_TC_ACT(BLK_TC_AHEAD) };
 
 /*
  * More could be added as needed, taking care to increment the decrementer
@@ -79,6 +79,8 @@ static u32 bio_act[3] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_AC
         (((rw) & (1 << BIO_RW_BARRIER)) >> (BIO_RW_BARRIER - 0))
 #define trace_sync_bit(rw)      \
         (((rw) & (1 << BIO_RW_SYNC)) >> (BIO_RW_SYNC - 1))
+#define trace_ahead_bit(rw)     \
+        (((rw) & (1 << BIO_RW_AHEAD)) << (BIO_RW_AHEAD - 0))
 
 /*
  * The worker for the various blk_add_trace*() types. Fills out a
@@ -100,6 +102,7 @@ void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
         what |= ddir_act[rw & WRITE];
         what |= bio_act[trace_barrier_bit(rw)];
         what |= bio_act[trace_sync_bit(rw)];
+        what |= bio_act[trace_ahead_bit(rw)];
 
         pid = tsk->pid;
         if (unlikely(act_log_check(bt, what, sector, pid)))
diff --git a/block/ioctl.c b/block/ioctl.c
index 9cfa2e1ecb24..309760b7e37f 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -72,7 +72,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
                         bdevp = bdget_disk(disk, part);
                         if (!bdevp)
                                 return -ENOMEM;
-                        mutex_lock(&bdevp->bd_mutex);
+                        mutex_lock_nested(&bdevp->bd_mutex, BD_MUTEX_PARTITION);
                         if (bdevp->bd_openers) {
                                 mutex_unlock(&bdevp->bd_mutex);
                                 bdput(bdevp);
@@ -82,7 +82,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
                         fsync_bdev(bdevp);
                         invalidate_bdev(bdevp, 0);
 
-                        mutex_lock(&bdev->bd_mutex);
+                        mutex_lock_nested(&bdev->bd_mutex, BD_MUTEX_WHOLE);
                         delete_partition(disk, part);
                         mutex_unlock(&bdev->bd_mutex);
                         mutex_unlock(&bdevp->bd_mutex);
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index ab17c7224bb6..61d6b3c65b66 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3491,8 +3491,8 @@ EXPORT_SYMBOL(end_request);
 
 void blk_rq_bio_prep(request_queue_t *q, struct request *rq, struct bio *bio)
 {
-        /* first three bits are identical in rq->flags and bio->bi_rw */
-        rq->flags |= (bio->bi_rw & 7);
+        /* first two bits are identical in rq->flags and bio->bi_rw */
+        rq->flags |= (bio->bi_rw & 3);
 
         rq->nr_phys_segments = bio_phys_segments(q, bio);
         rq->nr_hw_segments = bio_hw_segments(q, bio);