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patch-3.4.25-26
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patch-3.4.25-26
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diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd
index dbedafb..eb781c6 100644
--- a/Documentation/ABI/testing/sysfs-bus-rbd
+++ b/Documentation/ABI/testing/sysfs-bus-rbd
@@ -51,12 +51,6 @@ current_snap
The current snapshot for which the device is mapped.
-create_snap
-
- Create a snapshot:
-
- $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_create
-
snap_*
A directory per each snapshot
diff --git a/Makefile b/Makefile
index 0913881..2d84a1d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 4
-SUBLEVEL = 25
+SUBLEVEL = 26
EXTRAVERSION =
NAME = Saber-toothed Squirrel
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
index a658672..b4eb3da 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
@@ -462,6 +462,9 @@
GPIO76_LCD_PCLK, \
GPIO77_LCD_BIAS
+/* these enable a work-around for a hw bug in pxa27x during ac97 warm reset */
+#define GPIO113_AC97_nRESET_GPIO_HIGH MFP_CFG_OUT(GPIO113, AF0, DEFAULT)
+#define GPIO95_AC97_nRESET_GPIO_HIGH MFP_CFG_OUT(GPIO95, AF0, DEFAULT)
extern int keypad_set_wake(unsigned int on);
#endif /* __ASM_ARCH_MFP_PXA27X_H */
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 4726c24..a2fe795 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -47,9 +47,9 @@ void pxa27x_clear_otgph(void)
EXPORT_SYMBOL(pxa27x_clear_otgph);
static unsigned long ac97_reset_config[] = {
- GPIO113_GPIO,
+ GPIO113_AC97_nRESET_GPIO_HIGH,
GPIO113_AC97_nRESET,
- GPIO95_GPIO,
+ GPIO95_AC97_nRESET_GPIO_HIGH,
GPIO95_AC97_nRESET,
};
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index e9a5fd7..69b17a9 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -72,9 +72,7 @@ void __noreturn cpu_idle(void)
}
}
#ifdef CONFIG_HOTPLUG_CPU
- if (!cpu_online(cpu) && !cpu_isset(cpu, cpu_callin_map) &&
- (system_state == SYSTEM_RUNNING ||
- system_state == SYSTEM_BOOTING))
+ if (!cpu_online(cpu) && !cpu_isset(cpu, cpu_callin_map))
play_dead();
#endif
rcu_idle_exit();
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 58bddee..9e07bd0 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -422,7 +422,7 @@ _STATIC(__after_prom_start)
tovirt(r6,r6) /* on booke, we already run at PAGE_OFFSET */
#endif
-#ifdef CONFIG_CRASH_DUMP
+#ifdef CONFIG_RELOCATABLE
/*
* Check if the kernel has to be running as relocatable kernel based on the
* variable __run_at_load, if it is set the kernel is treated as relocatable
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 730e69c..e7dba0b 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -749,13 +749,8 @@ void update_vsyscall(struct timespec *wall_time, struct timespec *wtm,
void update_vsyscall_tz(void)
{
- /* Make userspace gettimeofday spin until we're done. */
- ++vdso_data->tb_update_count;
- smp_mb();
vdso_data->tz_minuteswest = sys_tz.tz_minuteswest;
vdso_data->tz_dsttime = sys_tz.tz_dsttime;
- smp_mb();
- ++vdso_data->tb_update_count;
}
static void __init clocksource_init(void)
diff --git a/arch/powerpc/kvm/44x_emulate.c b/arch/powerpc/kvm/44x_emulate.c
index 549bb2c..ded8a1a 100644
--- a/arch/powerpc/kvm/44x_emulate.c
+++ b/arch/powerpc/kvm/44x_emulate.c
@@ -79,6 +79,7 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
run->dcr.dcrn = dcrn;
run->dcr.data = 0;
run->dcr.is_write = 0;
+ vcpu->arch.dcr_is_write = 0;
vcpu->arch.io_gpr = rt;
vcpu->arch.dcr_needed = 1;
kvmppc_account_exit(vcpu, DCR_EXITS);
@@ -100,6 +101,7 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
run->dcr.dcrn = dcrn;
run->dcr.data = kvmppc_get_gpr(vcpu, rs);
run->dcr.is_write = 1;
+ vcpu->arch.dcr_is_write = 1;
vcpu->arch.dcr_needed = 1;
kvmppc_account_exit(vcpu, DCR_EXITS);
emulated = EMULATE_DO_DCR;
diff --git a/arch/powerpc/platforms/40x/ppc40x_simple.c b/arch/powerpc/platforms/40x/ppc40x_simple.c
index 9761206..f0eee75 100644
--- a/arch/powerpc/platforms/40x/ppc40x_simple.c
+++ b/arch/powerpc/platforms/40x/ppc40x_simple.c
@@ -57,7 +57,8 @@ static const char *board[] __initdata = {
"amcc,makalu",
"apm,klondike",
"est,hotfoot",
- "plathome,obs600"
+ "plathome,obs600",
+ NULL
};
static int __init ppc40x_probe(void)
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 6b4976b..a9c8a46 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -612,6 +612,20 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
}
}
+ /*
+ * The way access filter has a performance penalty on some workloads.
+ * Disable it on the affected CPUs.
+ */
+ if ((c->x86 == 0x15) &&
+ (c->x86_model >= 0x02) && (c->x86_model < 0x20)) {
+ u64 val;
+
+ if (!rdmsrl_safe(0xc0011021, &val) && !(val & 0x1E)) {
+ val |= 0x1E;
+ checking_wrmsrl(0xc0011021, val);
+ }
+ }
+
cpu_detect_cache_sizes(c);
/* Multi core CPU? */
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index bd3199c..619a2e4 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -789,8 +789,8 @@ acpi_bus_extract_wakeup_device_power_package(acpi_handle handle,
static void acpi_bus_set_run_wake_flags(struct acpi_device *device)
{
struct acpi_device_id button_device_ids[] = {
- {"PNP0C0D", 0},
{"PNP0C0C", 0},
+ {"PNP0C0D", 0},
{"PNP0C0E", 0},
{"", 0},
};
@@ -802,6 +802,11 @@ static void acpi_bus_set_run_wake_flags(struct acpi_device *device)
/* Power button, Lid switch always enable wakeup */
if (!acpi_match_device_ids(device, button_device_ids)) {
device->wakeup.flags.run_wake = 1;
+ if (!acpi_match_device_ids(device, &button_device_ids[1])) {
+ /* Do not use Lid/sleep button for S5 wakeup */
+ if (device->wakeup.sleep_state == ACPI_STATE_S5)
+ device->wakeup.sleep_state = ACPI_STATE_S4;
+ }
device_set_wakeup_capable(&device->dev, true);
return;
}
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index cf4837f..4b4caa3 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2536,6 +2536,7 @@ int ata_bus_probe(struct ata_port *ap)
* bus as we may be talking too fast.
*/
dev->pio_mode = XFER_PIO_0;
+ dev->dma_mode = 0xff;
/* If the controller has a pio mode setup function
* then use it to set the chipset to rights. Don't
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index d1fbd59..e47c224 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2600,6 +2600,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
* bus as we may be talking too fast.
*/
dev->pio_mode = XFER_PIO_0;
+ dev->dma_mode = 0xff;
/* If the controller has a pio mode setup function
* then use it to set the chipset to rights. Don't
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 2222635..15863a4 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -309,7 +309,8 @@ ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
- if (ap->ops->sw_activity_show && (ap->flags & ATA_FLAG_SW_ACTIVITY))
+ if (atadev && ap->ops->sw_activity_show &&
+ (ap->flags & ATA_FLAG_SW_ACTIVITY))
return ap->ops->sw_activity_show(atadev, buf);
return -EINVAL;
}
@@ -324,7 +325,8 @@ ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
enum sw_activity val;
int rc;
- if (ap->ops->sw_activity_store && (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
+ if (atadev && ap->ops->sw_activity_store &&
+ (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
val = simple_strtoul(buf, NULL, 0);
switch (val) {
case OFF: case BLINK_ON: case BLINK_OFF:
diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c
index 000fcc9..ef6e328 100644
--- a/drivers/ata/sata_promise.c
+++ b/drivers/ata/sata_promise.c
@@ -147,6 +147,10 @@ struct pdc_port_priv {
dma_addr_t pkt_dma;
};
+struct pdc_host_priv {
+ spinlock_t hard_reset_lock;
+};
+
static int pdc_sata_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int pdc_sata_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static int pdc_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
@@ -801,9 +805,10 @@ static void pdc_hard_reset_port(struct ata_port *ap)
void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
void __iomem *pcictl_b1_mmio = host_mmio + PDC_PCI_CTL + 1;
unsigned int ata_no = pdc_ata_port_to_ata_no(ap);
+ struct pdc_host_priv *hpriv = ap->host->private_data;
u8 tmp;
- spin_lock(&ap->host->lock);
+ spin_lock(&hpriv->hard_reset_lock);
tmp = readb(pcictl_b1_mmio);
tmp &= ~(0x10 << ata_no);
@@ -814,7 +819,7 @@ static void pdc_hard_reset_port(struct ata_port *ap)
writeb(tmp, pcictl_b1_mmio);
readb(pcictl_b1_mmio); /* flush */
- spin_unlock(&ap->host->lock);
+ spin_unlock(&hpriv->hard_reset_lock);
}
static int pdc_sata_hardreset(struct ata_link *link, unsigned int *class,
@@ -1182,6 +1187,7 @@ static int pdc_ata_init_one(struct pci_dev *pdev,
const struct ata_port_info *pi = &pdc_port_info[ent->driver_data];
const struct ata_port_info *ppi[PDC_MAX_PORTS];
struct ata_host *host;
+ struct pdc_host_priv *hpriv;
void __iomem *host_mmio;
int n_ports, i, rc;
int is_sataii_tx4;
@@ -1218,6 +1224,11 @@ static int pdc_ata_init_one(struct pci_dev *pdev,
dev_err(&pdev->dev, "failed to allocate host\n");
return -ENOMEM;
}
+ hpriv = devm_kzalloc(&pdev->dev, sizeof *hpriv, GFP_KERNEL);
+ if (!hpriv)
+ return -ENOMEM;
+ spin_lock_init(&hpriv->hard_reset_lock);
+ host->private_data = hpriv;
host->iomap = pcim_iomap_table(pdev);
is_sataii_tx4 = pdc_is_sataii_tx4(pi->flags);
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 251eb70..8ab1eab 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -90,7 +90,7 @@ static ssize_t regmap_map_read_file(struct file *file, char __user *user_buf,
/* If we're in the region the user is trying to read */
if (p >= *ppos) {
/* ...but not beyond it */
- if (buf_pos >= count - 1 - tot_len)
+ if (buf_pos + 1 + tot_len >= count)
break;
/* Format the register */
diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c
index c3e9dff..041fddf 100644
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -115,7 +115,7 @@ static void bcma_core_mips_set_irq(struct bcma_device *dev, unsigned int irq)
bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) &
~(1 << irqflag));
else
- bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq), 0);
+ bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(oldirq), 0);
/* assign the new one */
if (irq == 0) {
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index db195ab..e49ddd0 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -1,5 +1,5 @@
/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */
-#define VERSION "47"
+#define VERSION "47q"
#define AOE_MAJOR 152
#define DEVICE_NAME "aoe"
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 321de7b..7eca463 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -276,8 +276,6 @@ aoeblk_gdalloc(void *vp)
goto err_mempool;
blk_queue_make_request(d->blkq, aoeblk_make_request);
d->blkq->backing_dev_info.name = "aoe";
- if (bdi_init(&d->blkq->backing_dev_info))
- goto err_blkq;
spin_lock_irqsave(&d->lock, flags);
gd->major = AOE_MAJOR;
gd->first_minor = d->sysminor * AOE_PARTITIONS;
@@ -298,9 +296,6 @@ aoeblk_gdalloc(void *vp)
aoedisk_add_sysfs(d);
return;
-err_blkq:
- blk_cleanup_queue(d->blkq);
- d->blkq = NULL;
err_mempool:
mempool_destroy(d->bufpool);
err_disk:
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 7b33136..cba3d02 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -71,7 +71,7 @@
#define DEV_NAME_LEN 32
#define MAX_INT_FORMAT_WIDTH ((5 * sizeof (int)) / 2 + 1)
-#define RBD_NOTIFY_TIMEOUT_DEFAULT 10
+#define RBD_READ_ONLY_DEFAULT false
/*
* block device image metadata (in-memory version)
@@ -94,7 +94,7 @@ struct rbd_image_header {
};
struct rbd_options {
- int notify_timeout;
+ bool read_only;
};
/*
@@ -174,9 +174,13 @@ struct rbd_device {
/* protects updating the header */
struct rw_semaphore header_rwsem;
+ /* name of the snapshot this device reads from */
char snap_name[RBD_MAX_SNAP_NAME_LEN];
+ /* id of the snapshot this device reads from */
u64 snap_id; /* current snapshot id */
- int read_only;
+ /* whether the snap_id this device reads from still exists */
+ bool snap_exists;
+ bool read_only;
struct list_head node;
@@ -185,6 +189,7 @@ struct rbd_device {
/* sysfs related */
struct device dev;
+ unsigned long open_count;
};
static DEFINE_MUTEX(ctl_mutex); /* Serialize open/close/setup/teardown */
@@ -197,10 +202,6 @@ static DEFINE_SPINLOCK(rbd_client_list_lock);
static int __rbd_init_snaps_header(struct rbd_device *rbd_dev);
static void rbd_dev_release(struct device *dev);
-static ssize_t rbd_snap_add(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t count);
static void __rbd_remove_snap_dev(struct rbd_device *rbd_dev,
struct rbd_snap *snap);
@@ -246,13 +247,15 @@ static int rbd_open(struct block_device *bdev, fmode_t mode)
{
struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
- rbd_get_dev(rbd_dev);
-
- set_device_ro(bdev, rbd_dev->read_only);
-
if ((mode & FMODE_WRITE) && rbd_dev->read_only)
return -EROFS;
+ mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
+ rbd_get_dev(rbd_dev);
+ set_device_ro(bdev, rbd_dev->read_only);
+ rbd_dev->open_count++;
+ mutex_unlock(&ctl_mutex);
+
return 0;
}
@@ -260,7 +263,11 @@ static int rbd_release(struct gendisk *disk, fmode_t mode)
{
struct rbd_device *rbd_dev = disk->private_data;
+ mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
+ BUG_ON(!rbd_dev->open_count);
+ rbd_dev->open_count--;
rbd_put_dev(rbd_dev);
+ mutex_unlock(&ctl_mutex);
return 0;
}
@@ -342,17 +349,24 @@ static struct rbd_client *__rbd_client_find(struct ceph_options *opt)
* mount options
*/
enum {
- Opt_notify_timeout,
Opt_last_int,
/* int args above */
Opt_last_string,
/* string args above */
+ Opt_read_only,
+ Opt_read_write,
+ /* Boolean args above */
+ Opt_last_bool,
};
static match_table_t rbdopt_tokens = {
- {Opt_notify_timeout, "notify_timeout=%d"},
/* int args above */
/* string args above */
+ {Opt_read_only, "read_only"},
+ {Opt_read_only, "ro"}, /* Alternate spelling */
+ {Opt_read_write, "read_write"},
+ {Opt_read_write, "rw"}, /* Alternate spelling */
+ /* Boolean args above */
{-1, NULL}
};
@@ -377,13 +391,18 @@ static int parse_rbd_opts_token(char *c, void *private)
} else if (token > Opt_last_int && token < Opt_last_string) {
dout("got string token %d val %s\n", token,
argstr[0].from);
+ } else if (token > Opt_last_string && token < Opt_last_bool) {
+ dout("got Boolean token %d\n", token);
} else {
dout("got token %d\n", token);
}
switch (token) {
- case Opt_notify_timeout:
- rbdopt->notify_timeout = intval;
+ case Opt_read_only:
+ rbdopt->read_only = true;
+ break;
+ case Opt_read_write:
+ rbdopt->read_only = false;
break;
default:
BUG_ON(token);
@@ -407,7 +426,7 @@ static struct rbd_client *rbd_get_client(const char *mon_addr,
if (!rbd_opts)
return ERR_PTR(-ENOMEM);
- rbd_opts->notify_timeout = RBD_NOTIFY_TIMEOUT_DEFAULT;
+ rbd_opts->read_only = RBD_READ_ONLY_DEFAULT;
opt = ceph_parse_options(options, mon_addr,
mon_addr + mon_addr_len,
@@ -590,7 +609,8 @@ static int rbd_header_set_snap(struct rbd_device *dev, u64 *size)
else
snapc->seq = 0;
dev->snap_id = CEPH_NOSNAP;
- dev->read_only = 0;
+ dev->snap_exists = false;
+ dev->read_only = dev->rbd_client->rbd_opts->read_only;
if (size)
*size = header->image_size;
} else {
@@ -598,7 +618,8 @@ static int rbd_header_set_snap(struct rbd_device *dev, u64 *size)
if (ret < 0)
goto done;
dev->snap_id = snapc->seq;
- dev->read_only = 1;
+ dev->snap_exists = true;
+ dev->read_only = true; /* No choice for snapshots */
}
ret = 0;
@@ -609,7 +630,7 @@ done:
static void rbd_header_free(struct rbd_image_header *header)
{
- kfree(header->snapc);
+ ceph_put_snap_context(header->snapc);
kfree(header->snap_names);
kfree(header->snap_sizes);
}
@@ -887,13 +908,10 @@ static int rbd_do_request(struct request *rq,
dout("rbd_do_request obj=%s ofs=%lld len=%lld\n", obj, len, ofs);
- down_read(&dev->header_rwsem);
-
osdc = &dev->rbd_client->client->osdc;
req = ceph_osdc_alloc_request(osdc, flags, snapc, ops,
false, GFP_NOIO, pages, bio);
if (!req) {
- up_read(&dev->header_rwsem);
ret = -ENOMEM;
goto done_pages;
}
@@ -920,15 +938,15 @@ static int rbd_do_request(struct request *rq,
layout->fl_object_size = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER);
layout->fl_pg_preferred = cpu_to_le32(-1);
layout->fl_pg_pool = cpu_to_le32(dev->poolid);
- ceph_calc_raw_layout(osdc, layout, snapid, ofs, &len, &bno,
- req, ops);
+ ret = ceph_calc_raw_layout(osdc, layout, snapid, ofs, &len, &bno,
+ req, ops);
+ BUG_ON(ret != 0);
ceph_osdc_build_request(req, ofs, &len,
ops,
snapc,
&mtime,
req->r_oid, req->r_oid_len);
- up_read(&dev->header_rwsem);
if (linger_req) {
ceph_osdc_set_request_linger(osdc, req);
@@ -1193,7 +1211,7 @@ static int rbd_req_sync_notify_ack(struct rbd_device *dev,
if (ret < 0)
return ret;
- ops[0].watch.ver = cpu_to_le64(dev->header.obj_version);
+ ops[0].watch.ver = cpu_to_le64(ver);
ops[0].watch.cookie = notify_id;
ops[0].watch.flag = 0;
@@ -1213,6 +1231,7 @@ static int rbd_req_sync_notify_ack(struct rbd_device *dev,
static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
{
struct rbd_device *dev = (struct rbd_device *)data;
+ u64 hver;
int rc;
if (!dev)
@@ -1222,12 +1241,13 @@ static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
notify_id, (int)opcode);
mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
rc = __rbd_update_snaps(dev);
+ hver = dev->header.obj_version;
mutex_unlock(&ctl_mutex);
if (rc)
pr_warning(RBD_DRV_NAME "%d got notification but failed to "
" update snaps: %d\n", dev->major, rc);
- rbd_req_sync_notify_ack(dev, ver, notify_id, dev->obj_md_name);
+ rbd_req_sync_notify_ack(dev, hver, notify_id, dev->obj_md_name);
}
/*
@@ -1304,71 +1324,7 @@ static int rbd_req_sync_unwatch(struct rbd_device *dev,
return ret;
}
-struct rbd_notify_info {
- struct rbd_device *dev;
-};
-
-static void rbd_notify_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
-{
- struct rbd_device *dev = (struct rbd_device *)data;
- if (!dev)
- return;
-
- dout("rbd_notify_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name,
- notify_id, (int)opcode);
-}
-
-/*
- * Request sync osd notify
- */
-static int rbd_req_sync_notify(struct rbd_device *dev,
- const char *obj)
-{
- struct ceph_osd_req_op *ops;
- struct ceph_osd_client *osdc = &dev->rbd_client->client->osdc;
- struct ceph_osd_event *event;
- struct rbd_notify_info info;
- int payload_len = sizeof(u32) + sizeof(u32);
- int ret;
-
- ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_NOTIFY, payload_len);
- if (ret < 0)
- return ret;
-
- info.dev = dev;
-
- ret = ceph_osdc_create_event(osdc, rbd_notify_cb, 1,
- (void *)&info, &event);
- if (ret < 0)
- goto fail;
-
- ops[0].watch.ver = 1;
- ops[0].watch.flag = 1;
- ops[0].watch.cookie = event->cookie;
- ops[0].watch.prot_ver = RADOS_NOTIFY_VER;
- ops[0].watch.timeout = 12;
-
- ret = rbd_req_sync_op(dev, NULL,
- CEPH_NOSNAP,
- 0,
- CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
- ops,
- 1, obj, 0, 0, NULL, NULL, NULL);
- if (ret < 0)
- goto fail_event;
-
- ret = ceph_osdc_wait_event(event, CEPH_OSD_TIMEOUT_DEFAULT);
- dout("ceph_osdc_wait_event returned %d\n", ret);
- rbd_destroy_ops(ops);
- return 0;
-
-fail_event:
- ceph_osdc_cancel_event(event);
-fail:
- rbd_destroy_ops(ops);
- return ret;
-}
-
+#if 0
/*
* Request sync osd read
*/
@@ -1408,6 +1364,7 @@ static int rbd_req_sync_exec(struct rbd_device *dev,
dout("cls_exec returned %d\n", ret);
return ret;
}
+#endif
static struct rbd_req_coll *rbd_alloc_coll(int num_reqs)
{
@@ -1440,6 +1397,7 @@ static void rbd_rq_fn(struct request_queue *q)
u64 ofs;
int num_segs, cur_seg = 0;
struct rbd_req_coll *coll;
+ struct ceph_snap_context *snapc;
/* peek at request from block layer */
if (!rq)
@@ -1466,6 +1424,20 @@ static void rbd_rq_fn(struct request_queue *q)
spin_unlock_irq(q->queue_lock);
+ down_read(&rbd_dev->header_rwsem);
+
+ if (rbd_dev->snap_id != CEPH_NOSNAP && !rbd_dev->snap_exists) {
+ up_read(&rbd_dev->header_rwsem);
+ dout("request for non-existent snapshot");
+ spin_lock_irq(q->queue_lock);
+ __blk_end_request_all(rq, -ENXIO);
+ continue;
+ }
+
+ snapc = ceph_get_snap_context(rbd_dev->header.snapc);
+
+ up_read(&rbd_dev->header_rwsem);
+
dout("%s 0x%x bytes at 0x%llx\n",
do_write ? "write" : "read",
size, blk_rq_pos(rq) * SECTOR_SIZE);
@@ -1475,6 +1447,7 @@ static void rbd_rq_fn(struct request_queue *q)
if (!coll) {
spin_lock_irq(q->queue_lock);
__blk_end_request_all(rq, -ENOMEM);
+ ceph_put_snap_context(snapc);
continue;
}
@@ -1498,7 +1471,7 @@ static void rbd_rq_fn(struct request_queue *q)
/* init OSD command: write or read */
if (do_write)
rbd_req_write(rq, rbd_dev,
- rbd_dev->header.snapc,
+ snapc,
ofs,
op_size, bio,
coll, cur_seg);
@@ -1521,6 +1494,8 @@ next_seg:
if (bp)
bio_pair_release(bp);
spin_lock_irq(q->queue_lock);
+
+ ceph_put_snap_context(snapc);
}
}
@@ -1624,57 +1599,6 @@ out_dh:
return rc;
}
-/*
- * create a snapshot
- */
-static int rbd_header_add_snap(struct rbd_device *dev,
- const char *snap_name,
- gfp_t gfp_flags)
-{
- int name_len = strlen(snap_name);
- u64 new_snapid;
- int ret;
- void *data, *p, *e;
- u64 ver;
- struct ceph_mon_client *monc;
-
- /* we should create a snapshot only if we're pointing at the head */
- if (dev->snap_id != CEPH_NOSNAP)
- return -EINVAL;
-
- monc = &dev->rbd_client->client->monc;
- ret = ceph_monc_create_snapid(monc, dev->poolid, &new_snapid);
- dout("created snapid=%lld\n", new_snapid);
- if (ret < 0)
- return ret;
-
- data = kmalloc(name_len + 16, gfp_flags);
- if (!data)
- return -ENOMEM;
-
- p = data;
- e = data + name_len + 16;
-
- ceph_encode_string_safe(&p, e, snap_name, name_len, bad);
- ceph_encode_64_safe(&p, e, new_snapid, bad);
-
- ret = rbd_req_sync_exec(dev, dev->obj_md_name, "rbd", "snap_add",
- data, p - data, &ver);
-
- kfree(data);
-
- if (ret < 0)
- return ret;
-
- down_write(&dev->header_rwsem);
- dev->header.snapc->seq = new_snapid;
- up_write(&dev->header_rwsem);
-
- return 0;
-bad:
- return -ERANGE;
-}
-
static void __rbd_remove_all_snaps(struct rbd_device *rbd_dev)
{
struct rbd_snap *snap;
@@ -1699,10 +1623,15 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
if (ret < 0)
return ret;
+ down_write(&rbd_dev->header_rwsem);
+
/* resized? */
- set_capacity(rbd_dev->disk, h.image_size / SECTOR_SIZE);
+ if (rbd_dev->snap_id == CEPH_NOSNAP) {
+ sector_t size = (sector_t) h.image_size / SECTOR_SIZE;
- down_write(&rbd_dev->header_rwsem);
+ dout("setting size to %llu sectors", (unsigned long long) size);
+ set_capacity(rbd_dev->disk, size);
+ }
snap_seq = rbd_dev->header.snapc->seq;
if (rbd_dev->header.total_snaps &&
@@ -1711,10 +1640,12 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
if head moves */
follow_seq = 1;
- kfree(rbd_dev->header.snapc);
+ ceph_put_snap_context(rbd_dev->header.snapc);
kfree(rbd_dev->header.snap_names);
kfree(rbd_dev->header.snap_sizes);
+ rbd_dev->header.obj_version = h.obj_version;
+ rbd_dev->header.image_size = h.image_size;
rbd_dev->header.total_snaps = h.total_snaps;
rbd_dev->header.snapc = h.snapc;
rbd_dev->header.snap_names = h.snap_names;
@@ -1818,8 +1749,13 @@ static ssize_t rbd_size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct rbd_device *rbd_dev = dev_to_rbd_dev(dev);
+ sector_t size;
+
+ down_read(&rbd_dev->header_rwsem);
+ size = get_capacity(rbd_dev->disk);
+ up_read(&rbd_dev->header_rwsem);
- return sprintf(buf, "%llu\n", (unsigned long long)rbd_dev->header.image_size);
+ return sprintf(buf, "%llu\n", (unsigned long long) size * SECTOR_SIZE);
}
static ssize_t rbd_major_show(struct device *dev,
@@ -1890,7 +1826,6 @@ static DEVICE_ATTR(pool, S_IRUGO, rbd_pool_show, NULL);
static DEVICE_ATTR(name, S_IRUGO, rbd_name_show, NULL);
static DEVICE_ATTR(refresh, S_IWUSR, NULL, rbd_image_refresh);
static DEVICE_ATTR(current_snap, S_IRUGO, rbd_snap_show, NULL);
-static DEVICE_ATTR(create_snap, S_IWUSR, NULL, rbd_snap_add);
static struct attribute *rbd_attrs[] = {
&dev_attr_size.attr,
@@ -1900,7 +1835,6 @@ static struct attribute *rbd_attrs[] = {
&dev_attr_name.attr,
&dev_attr_current_snap.attr,
&dev_attr_refresh.attr,
- &dev_attr_create_snap.attr,
NULL
};
@@ -2069,7 +2003,14 @@ static int __rbd_init_snaps_header(struct rbd_device *rbd_dev)
cur_id = rbd_dev->header.snapc->snaps[i - 1];
if (!i || old_snap->id < cur_id) {
- /* old_snap->id was skipped, thus was removed */
+ /*
+ * old_snap->id was skipped, thus was
+ * removed. If this rbd_dev is mapped to
+ * the removed snapshot, record that it no
+ * longer exists, to prevent further I/O.
+ */
+ if (rbd_dev->snap_id == old_snap->id)
+ rbd_dev->snap_exists = false;
__rbd_remove_snap_dev(rbd_dev, old_snap);
continue;
}
@@ -2217,8 +2158,8 @@ static void rbd_id_put(struct rbd_device *rbd_dev)
struct rbd_device *rbd_dev;
rbd_dev = list_entry(tmp, struct rbd_device, node);
- if (rbd_id > max_id)
- max_id = rbd_id;
+ if (rbd_dev->id > max_id)
+ max_id = rbd_dev->id;
}
spin_unlock(&rbd_dev_list_lock);
@@ -2515,6 +2456,11 @@ static ssize_t rbd_remove(struct bus_type *bus,
goto done;
}
+ if (rbd_dev->open_count) {
+ ret = -EBUSY;
+ goto done;
+ }
+
__rbd_remove_all_snaps(rbd_dev);
rbd_bus_del_dev(rbd_dev);
@@ -2523,47 +2469,6 @@ done:
return ret;
}
-static ssize_t rbd_snap_add(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t count)
-{
- struct rbd_device *rbd_dev = dev_to_rbd_dev(dev);
- int ret;
- char *name = kmalloc(count + 1, GFP_KERNEL);
- if (!name)
- return -ENOMEM;
-
- snprintf(name, count, "%s", buf);
-
- mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
-
- ret = rbd_header_add_snap(rbd_dev,
- name, GFP_KERNEL);
- if (ret < 0)
- goto err_unlock;
-
- ret = __rbd_update_snaps(rbd_dev);
- if (ret < 0)
- goto err_unlock;
-
- /* shouldn't hold ctl_mutex when notifying.. notify might
- trigger a watch callback that would need to get that mutex */
- mutex_unlock(&ctl_mutex);
-
- /* make a best effort, don't error if failed */
- rbd_req_sync_notify(rbd_dev, rbd_dev->obj_md_name);
-
- ret = count;
- kfree(name);
- return ret;
-
-err_unlock:
- mutex_unlock(&ctl_mutex);
- kfree(name);
- return ret;
-}
-
/*
* create control files in sysfs
* /sys/bus/rbd/...
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 08c6749..638e1f7 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -861,8 +861,8 @@ static void fwnet_receive_broadcast(struct fw_iso_context *context,
if (specifier_id == IANA_SPECIFIER_ID && ver == RFC2734_SW_VERSION) {
buf_ptr += 2;
length -= IEEE1394_GASP_HDR_SIZE;
- fwnet_incoming_packet(dev, buf_ptr, length,
- source_node_id, -1, true);
+ fwnet_incoming_packet(dev, buf_ptr, length, source_node_id,
+ context->card->generation, true);
}
packet.payload_length = dev->rcv_buffer_size;
@@ -958,7 +958,12 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
break;
}
- skb_pull(skb, ptask->max_payload);
+ if (ptask->dest_node == IEEE1394_ALL_NODES) {
+ skb_pull(skb,
+ ptask->max_payload + IEEE1394_GASP_HDR_SIZE);
+ } else {
+ skb_pull(skb, ptask->max_payload);
+ }
if (ptask->outstanding_pkts > 1) {
fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_INTFRAG,
dg_size, fg_off, datagram_label);
@@ -1062,7 +1067,7 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
smp_rmb();
node_id = dev->card->node_id;
- p = skb_push(ptask->skb, 8);
+ p = skb_push(ptask->skb, IEEE1394_GASP_HDR_SIZE);
put_unaligned_be32(node_id << 16 | IANA_SPECIFIER_ID >> 8, p);
put_unaligned_be32((IANA_SPECIFIER_ID & 0xff) << 24
| RFC2734_SW_VERSION, &p[4]);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 6e38325..9d9835a 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -66,6 +66,8 @@
#define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
/* use +hsync +vsync for detailed mode */
#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
+/* Force reduced-blanking timings for detailed modes */
+#define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7)
struct detailed_mode_closure {
struct drm_connector *connector;
@@ -120,6 +122,9 @@ static struct edid_quirk {
/* Samsung SyncMaster 22[5-6]BW */
{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
+
+ /* ViewSonic VA2026w */
+ { "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
};
/*** DDC fetch and block validation ***/
@@ -852,12 +857,19 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
"Wrong Hsync/Vsync pulse width\n");