Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block

* 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block: (29 commits)
  block: use blkdev_issue_discard in blk_ioctl_discard
  Make DISCARD_BARRIER and DISCARD_NOBARRIER writes instead of reads
  block: don't assume device has a request list backing in nr_requests store
  block: Optimal I/O limit wrapper
  cfq: choose a new next_req when a request is dispatched
  Seperate read and write statistics of in_flight requests
  aoe: end barrier bios with EOPNOTSUPP
  block: trace bio queueing trial only when it occurs
  block: enable rq CPU completion affinity by default
  cfq: fix the log message after dispatched a request
  block: use printk_once
  cciss: memory leak in cciss_init_one()
  splice: update mtime and atime on files
  block: make blk_iopoll_prep_sched() follow normal 0/1 return convention
  cfq-iosched: get rid of must_alloc flag
  block: use interrupts disabled version of raise_softirq_irqoff()
  block: fix comment in blk-iopoll.c
  block: adjust default budget for blk-iopoll
  block: fix long lines in block/blk-iopoll.c
  block: add blk-iopoll, a NAPI like approach for block devices
  ...

6 files changed, 14 insertions, 23 deletions

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 95d344971ed..b6cd571adbf 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -172,6 +172,9 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio)
 		BUG();
 		bio_endio(bio, -ENXIO);
 		return 0;
+	} else if (bio_rw_flagged(bio, BIO_RW_BARRIER)) {
+		bio_endio(bio, -EOPNOTSUPP);
+		return 0;
 	} else if (bio->bi_io_vec == NULL) {
 		printk(KERN_ERR "aoe: bi_io_vec is NULL\n");
 		BUG();
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index a52cc7fe45e..0589dfbbd7d 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -3889,7 +3889,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
 	int j = 0;
 	int rc;
 	int dac, return_code;
-	InquiryData_struct *inq_buff = NULL;
+	InquiryData_struct *inq_buff;
 
 	if (reset_devices) {
 		/* Reset the controller with a PCI power-cycle */
@@ -4029,6 +4029,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
 		printk(KERN_WARNING "cciss: unable to determine firmware"
 			" version of controller\n");
 	}
+	kfree(inq_buff);
 
 	cciss_procinit(i);
 
@@ -4045,7 +4046,6 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
 	return 1;
 
 clean4:
-	kfree(inq_buff);
 	kfree(hba[i]->cmd_pool_bits);
 	if (hba[i]->cmd_pool)
 		pci_free_consistent(hba[i]->pdev,
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 5757188cd1f..bbb79441d89 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -475,7 +475,7 @@ static int do_bio_filebacked(struct loop_device *lo, struct bio *bio)
 	pos = ((loff_t) bio->bi_sector << 9) + lo->lo_offset;
 
 	if (bio_rw(bio) == WRITE) {
-		int barrier = bio_barrier(bio);
+		bool barrier = bio_rw_flagged(bio, BIO_RW_BARRIER);
 		struct file *file = lo->lo_backing_file;
 
 		if (barrier) {
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index 911dfd98d81..9f3518c515a 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -219,8 +219,6 @@ static int pcd_sector;		/* address of next requested sector */
 static int pcd_count;		/* number of blocks still to do */
 static char *pcd_buf;		/* buffer for request in progress */
 
-static int pcd_warned;		/* Have we logged a phase warning ? */
-
 /* kernel glue structures */
 
 static int pcd_block_open(struct block_device *bdev, fmode_t mode)
@@ -417,12 +415,10 @@ static int pcd_completion(struct pcd_unit *cd, char *buf, char *fun)
 					printk
 					    ("%s: %s: Unexpected phase %d, d=%d, k=%d\n",
 					     cd->name, fun, p, d, k);
-				if ((verbose < 2) && !pcd_warned) {
-					pcd_warned = 1;
-					printk
-					    ("%s: WARNING: ATAPI phase errors\n",
-					     cd->name);
-				}
+				if (verbose < 2)
+					printk_once(
+					    "%s: WARNING: ATAPI phase errors\n",
+					    cd->name);
 				mdelay(1);
 			}
 			if (k++ > PCD_TMO) {
diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c
index da403b6a7f4..f5cd2e83ebc 100644
--- a/drivers/block/sx8.c
+++ b/drivers/block/sx8.c
@@ -1564,15 +1564,13 @@ static int carm_init_shm(struct carm_host *host)
 
 static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 {
-	static unsigned int printed_version;
 	struct carm_host *host;
 	unsigned int pci_dac;
 	int rc;
 	struct request_queue *q;
 	unsigned int i;
 
-	if (!printed_version++)
-		printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
+	printk_once(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
 
 	rc = pci_enable_device(pdev);
 	if (rc)
diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c
index 390d69bb7c4..b441ce3832e 100644
--- a/drivers/block/viodasd.c
+++ b/drivers/block/viodasd.c
@@ -416,15 +416,9 @@ retry:
 		goto retry;
 	}
 	if (we.max_disk > (MAX_DISKNO - 1)) {
-		static int warned;
-
-		if (warned == 0) {
-			warned++;
-			printk(VIOD_KERN_INFO
-				"Only examining the first %d "
-				"of %d disks connected\n",
-				MAX_DISKNO, we.max_disk + 1);
-		}
+		printk_once(VIOD_KERN_INFO
+			"Only examining the first %d of %d disks connected\n",
+			MAX_DISKNO, we.max_disk + 1);
 	}
 
 	/* Send the close event to OS/400.  We DON'T expect a response */