Merge branch 'master' into for-2.6.35

Conflicts:
	block/blk-cgroup.c
	block/cfq-iosched.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

31 files changed, 79 insertions, 34 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index fdc9bcbe55a2..5326af28a410 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -42,6 +42,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/device.h>
 #include <linux/dmi.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_cmnd.h>
 #include <linux/libata.h>
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index c33806654e46..83bc49fac9bb 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -90,6 +90,7 @@
 #include <linux/blkdev.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>
 #include <linux/dmi.h>
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 292fdbc0431a..7b5eea7e01dc 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -15,6 +15,7 @@
 #include <linux/acpi.h>
 #include <linux/libata.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <scsi/scsi_device.h>
 #include "libata.h"
 
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 4a28420efff2..49cffb6094a3 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -58,6 +58,7 @@
 #include <linux/io.h>
 #include <linux/async.h>
 #include <linux/log2.h>
+#include <linux/slab.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_host.h>
@@ -1493,6 +1494,7 @@ static int ata_hpa_resize(struct ata_device *dev)
 {
 	struct ata_eh_context *ehc = &dev->link->eh_context;
 	int print_info = ehc->i.flags & ATA_EHI_PRINTINFO;
+	bool unlock_hpa = ata_ignore_hpa || dev->flags & ATA_DFLAG_UNLOCK_HPA;
 	u64 sectors = ata_id_n_sectors(dev->id);
 	u64 native_sectors;
 	int rc;
@@ -1509,7 +1511,7 @@ static int ata_hpa_resize(struct ata_device *dev)
 		/* If device aborted the command or HPA isn't going to
 		 * be unlocked, skip HPA resizing.
 		 */
-		if (rc == -EACCES || !ata_ignore_hpa) {
+		if (rc == -EACCES || !unlock_hpa) {
 			ata_dev_printk(dev, KERN_WARNING, "HPA support seems "
 				       "broken, skipping HPA handling\n");
 			dev->horkage |= ATA_HORKAGE_BROKEN_HPA;
@@ -1524,7 +1526,7 @@ static int ata_hpa_resize(struct ata_device *dev)
 	dev->n_native_sectors = native_sectors;
 
 	/* nothing to do? */
-	if (native_sectors <= sectors || !ata_ignore_hpa) {
+	if (native_sectors <= sectors || !unlock_hpa) {
 		if (!print_info || native_sectors == sectors)
 			return 0;
 
@@ -4185,36 +4187,51 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
 		goto fail;
 
 	/* verify n_sectors hasn't changed */
-	if (dev->class == ATA_DEV_ATA && n_sectors &&
-	    dev->n_sectors != n_sectors) {
-		ata_dev_printk(dev, KERN_WARNING, "n_sectors mismatch "
-			       "%llu != %llu\n",
-			       (unsigned long long)n_sectors,
-			       (unsigned long long)dev->n_sectors);
-		/*
-		 * Something could have caused HPA to be unlocked
-		 * involuntarily.  If n_native_sectors hasn't changed
-		 * and the new size matches it, keep the device.
-		 */
-		if (dev->n_native_sectors == n_native_sectors &&
-		    dev->n_sectors > n_sectors &&
-		    dev->n_sectors == n_native_sectors) {
-			ata_dev_printk(dev, KERN_WARNING,
-				       "new n_sectors matches native, probably "
-				       "late HPA unlock, continuing\n");
-			/* keep using the old n_sectors */
-			dev->n_sectors = n_sectors;
-		} else {
-			/* restore original n_[native]_sectors and fail */
-			dev->n_native_sectors = n_native_sectors;
-			dev->n_sectors = n_sectors;
-			rc = -ENODEV;
-			goto fail;
-		}
+	if (dev->class != ATA_DEV_ATA || !n_sectors ||
+	    dev->n_sectors == n_sectors)
+		return 0;
+
+	/* n_sectors has changed */
+	ata_dev_printk(dev, KERN_WARNING, "n_sectors mismatch %llu != %llu\n",
+		       (unsigned long long)n_sectors,
+		       (unsigned long long)dev->n_sectors);
+
+	/*
+	 * Something could have caused HPA to be unlocked
+	 * involuntarily.  If n_native_sectors hasn't changed and the
+	 * new size matches it, keep the device.
+	 */
+	if (dev->n_native_sectors == n_native_sectors &&
+	    dev->n_sectors > n_sectors && dev->n_sectors == n_native_sectors) {
+		ata_dev_printk(dev, KERN_WARNING,
+			       "new n_sectors matches native, probably "
+			       "late HPA unlock, continuing\n");
+		/* keep using the old n_sectors */
+		dev->n_sectors = n_sectors;
+		return 0;
 	}
 
-	return 0;
+	/*
+	 * Some BIOSes boot w/o HPA but resume w/ HPA locked.  Try
+	 * unlocking HPA in those cases.
+	 *
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=15396
+	 */
+	if (dev->n_native_sectors == n_native_sectors &&
+	    dev->n_sectors < n_sectors && n_sectors == n_native_sectors &&
+	    !(dev->horkage & ATA_HORKAGE_BROKEN_HPA)) {
+		ata_dev_printk(dev, KERN_WARNING,
+			       "old n_sectors matches native, probably "
+			       "late HPA lock, will try to unlock HPA\n");
+		/* try unlocking HPA */
+		dev->flags |= ATA_DFLAG_UNLOCK_HPA;
+		rc = -EIO;
+	} else
+		rc = -ENODEV;
 
+	/* restore original n_[native_]sectors and fail */
+	dev->n_native_sectors = n_native_sectors;
+	dev->n_sectors = n_sectors;
  fail:
 	ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc);
 	return rc;
@@ -4353,6 +4370,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	{ "HTS541080G9SA00",    "MB4OC60D",     ATA_HORKAGE_NONCQ, },
 	{ "HTS541010G9SA00",    "MBZOC60D",     ATA_HORKAGE_NONCQ, },
 
+	/* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */
+	{ "C300-CTFDDAC128MAG",	"0001",		ATA_HORKAGE_NONCQ, },
+
 	/* devices which puke on READ_NATIVE_MAX */
 	{ "HDS724040KLSA80",	"KFAOA20N",	ATA_HORKAGE_BROKEN_HPA, },
 	{ "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA },
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index 51f0ffb78cbd..00305f41ed86 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -9,6 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/libata.h>
+#include <linux/slab.h>
 #include "libata.h"
 
 const struct ata_port_operations sata_pmp_port_ops = {
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index bea003a24d27..0088cdeb0b1e 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -33,6 +33,7 @@
  *
  */
 
+#include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/blkdev.h>
 #include <linux/spinlock.h>
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 277477251a86..e3877b6843c9 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -33,6 +33,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/gfp.h>
 #include <linux/pci.h>
 #include <linux/libata.h>
 #include <linux/highmem.h>
@@ -1815,10 +1816,6 @@ retry:
 			    !ap->ops->sff_irq_check(ap))
 				continue;
 
-			if (printk_ratelimit())
-				ata_port_printk(ap, KERN_INFO,
-						"clearing spurious IRQ\n");
-
 			if (idle & (1 << i)) {
 				ap->ops->sff_check_status(ap);
 				ap->ops->sff_irq_clear(ap);
diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c
index 8e5e13210426..1ea2be0f4b94 100644
--- a/drivers/ata/pata_acpi.c
+++ b/drivers/ata/pata_acpi.c
@@ -11,6 +11,7 @@
 #include <linux/blkdev.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <acpi/acpi_bus.h>
 
diff --git a/drivers/ata/pata_at32.c b/drivers/ata/pata_at32.c
index 5c129f99a7e3..66ce6a526f27 100644
--- a/drivers/ata/pata_at32.c
+++ b/drivers/ata/pata_at32.c
@@ -18,6 +18,7 @@
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/slab.h>
 #include <scsi/scsi_host.h>
 #include <linux/ata.h>
 #include <linux/libata.h>
diff --git a/drivers/ata/pata_at91.c b/drivers/ata/pata_at91.c
index 376dd380b43c..c6a946aa252c 100644
--- a/drivers/ata/pata_at91.c
+++ b/drivers/ata/pata_at91.c
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <linux/ata.h>
 #include <linux/clk.h>
diff --git a/drivers/ata/pata_atp867x.c b/drivers/ata/pata_atp867x.c
index 6fe7ded40c6a..bb6e0746e07d 100644
--- a/drivers/ata/pata_atp867x.c
+++ b/drivers/ata/pata_atp867x.c
@@ -33,6 +33,7 @@
 #include <linux/blkdev.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>
 
diff --git a/drivers/ata/pata_cmd640.c b/drivers/ata/pata_cmd640.c
index 6cd5d5dd9e3b..45896b3c6538 100644
--- a/drivers/ata/pata_cmd640.c
+++ b/drivers/ata/pata_cmd640.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>
 
diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c
index b663b7ffae4b..fa812e206eeb 100644
--- a/drivers/ata/pata_icside.c
+++ b/drivers/ata/pata_icside.c
@@ -2,6 +2,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <linux/ata.h>
 #include <linux/libata.h>
diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index 9bde1cb5f981..5cb286fd839e 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -75,6 +75,7 @@
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>
 
diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
index 4cc7bbd10ec2..211b6438b3a0 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -21,6 +21,7 @@
 #include <linux/pmu.h>
 #include <linux/scatterlist.h>
 #include <linux/of.h>
+#include <linux/gfp.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_host.h>
diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c
index 2bc2dbe30e8f..9f5b053611dd 100644
--- a/drivers/ata/pata_mpc52xx.c
+++ b/drivers/ata/pata_mpc52xx.c
@@ -16,7 +16,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/gfp.h>
 #include <linux/delay.h>
 #include <linux/libata.h>
 #include <linux/of_platform.h>
diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index 37ef416c1242..005a44483a7b 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/libata.h>
 #include <linux/irq.h>
+#include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/workqueue.h>
 #include <scsi/scsi_host.h>
diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c
index 147de2fd66d2..3c3172d3c34e 100644
--- a/drivers/ata/pata_pcmcia.c
+++ b/drivers/ata/pata_pcmcia.c
@@ -29,6 +29,7 @@
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <scsi/scsi_host.h>
 #include <linux/ata.h>
 #include <linux/libata.h>
diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index 45f1e10f917b..0ffd631000b7 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -19,6 +19,7 @@
  *
  */
 
+#include <linux/gfp.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
diff --git a/drivers/ata/pata_rdc.c b/drivers/ata/pata_rdc.c
index 237a24d41a2d..37092cfd7bc6 100644
--- a/drivers/ata/pata_rdc.c
+++ b/drivers/ata/pata_rdc.c
@@ -28,6 +28,7 @@
 #include <linux/blkdev.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>
 #include <linux/dmi.h>
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index c59b40710fbd..741e7cb69d8c 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -58,6 +58,7 @@
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>
 #include <linux/dmi.h>
diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c
index 6c65b0776a2c..5904cfdb8dbe 100644
--- a/drivers/ata/pdc_adma.c
+++ b/drivers/ata/pdc_adma.c
@@ -34,6 +34,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index ce4136eea08f..a69192b38b43 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -18,6 +18,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_cmnd.h>
diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index 4406902b4293..27dc6c86a4cd 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -39,6 +39,7 @@
  * happy to assist.
  */
 
+#include <linux/gfp.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index df8ee325d3ca..71cc0d42f9e1 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -64,6 +64,7 @@
 #include <linux/ata_platform.h>
 #include <linux/mbus.h>
 #include <linux/bitops.h>
+#include <linux/gfp.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_device.h>
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 684fe04dbbb7..2a98b09ab735 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -38,6 +38,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c
index 63306285c843..5356ec00d2b4 100644
--- a/drivers/ata/sata_promise.c
+++ b/drivers/ata/sata_promise.c
@@ -33,6 +33,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c
index 326c0cfc29b3..92ba45e6689b 100644
--- a/drivers/ata/sata_qstor.c
+++ b/drivers/ata/sata_qstor.c
@@ -29,6 +29,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 1370df6c420c..433b6b89c795 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -19,6 +19,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <linux/pci.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c
index bbcf970068ad..232468f2ea90 100644
--- a/drivers/ata/sata_sx4.c
+++ b/drivers/ata/sata_sx4.c
@@ -81,6 +81,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
diff --git a/drivers/ata/sata_uli.c b/drivers/ata/sata_uli.c
index e5bff47e8aa1..011e098590d1 100644
--- a/drivers/ata/sata_uli.c
+++ b/drivers/ata/sata_uli.c
@@ -26,6 +26,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>