Displaying 20 results from an estimated 45 matches for "virtio_blk_f_barrier".
2008 May 16
2
[PATCH] virtio_blk: allow read-only disks
...rtions(+), 1 deletion(-)
Index: kvm/drivers/block/virtio_blk.c
===================================================================
--- kvm.orig/drivers/block/virtio_blk.c
+++ kvm/drivers/block/virtio_blk.c
@@ -260,6 +260,10 @@ static int virtblk_probe(struct virtio_d
if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))
blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_TAG, NULL);
+ /* If disk is read-only in the host, the guest should obey */
+ if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))
+ set_disk_ro(vblk->disk, 1);
+
/* Host must always specify the capacity. */
vdev->config->get(v...
2016 Feb 24
1
[PATCH v2] virtio_blk: VIRTIO_BLK_F_WCE->VIRTIO_BLK_F_FLUSH
...---
2 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index 19c66fc..9ebe4d9 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -43,11 +43,11 @@
#ifndef VIRTIO_BLK_NO_LEGACY
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
-#define VIRTIO_BLK_F_WCE 9 /* Writeback mode enabled after reset */
+#define VIRTIO_BLK_F_FLUSH 9 /* Flush command supported */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in c...
2016 Feb 24
1
[PATCH v2] virtio_blk: VIRTIO_BLK_F_WCE->VIRTIO_BLK_F_FLUSH
...---
2 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index 19c66fc..9ebe4d9 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -43,11 +43,11 @@
#ifndef VIRTIO_BLK_NO_LEGACY
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
-#define VIRTIO_BLK_F_WCE 9 /* Writeback mode enabled after reset */
+#define VIRTIO_BLK_F_FLUSH 9 /* Flush command supported */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in c...
2008 Apr 16
1
[PATCH] add virtio disk geometry feature
...sectors = 1 << 5;
+ geo->cylinders = get_capacity(bd->bd_disk) >> 11;
+ }
return 0;
}
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h
index bca0b10..142c496 100644
--- a/include/linux/virtio_blk.h
+++ b/include/linux/virtio_blk.h
@@ -9,6 +9,7 @@
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */
+#define VIRTIO_BLK_F_GEOMETRY 4 /* Legacy geometry available */
struct virtio_blk_config
{
@@ -18,6 +19,12 @@ struct...
2008 Apr 16
1
[PATCH] add virtio disk geometry feature
...sectors = 1 << 5;
+ geo->cylinders = get_capacity(bd->bd_disk) >> 11;
+ }
return 0;
}
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h
index bca0b10..142c496 100644
--- a/include/linux/virtio_blk.h
+++ b/include/linux/virtio_blk.h
@@ -9,6 +9,7 @@
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */
+#define VIRTIO_BLK_F_GEOMETRY 4 /* Legacy geometry available */
struct virtio_blk_config
{
@@ -18,6 +19,12 @@ struct...
2007 Dec 21
0
[kvm-devel] [Virtio-for-kvm] [PATCH 1/13] [Mostly resend] virtio additions
...d will use to tell us I/O is done. */
pipe(p);
@@ -1471,14 +1501,18 @@ static void setup_block_file(const char *filename)
vblk->fd = open_or_die(filename, O_RDWR|O_LARGEFILE);
vblk->len = lseek64(vblk->fd, 0, SEEK_END);
+ /* We support barriers. */
+ add_feature(dev, VIRTIO_BLK_F_BARRIER);
+
/* Tell Guest how many sectors this device has. */
- cap = cpu_to_le64(vblk->len / 512);
- add_desc_field(dev, VIRTIO_CONFIG_BLK_F_CAPACITY, sizeof(cap), &cap);
+ conf.capacity = cpu_to_le64(vblk->len / 512);
/* Tell Guest not to put in too many descriptors at onc...
2007 Dec 21
0
[kvm-devel] [Virtio-for-kvm] [PATCH 1/13] [Mostly resend] virtio additions
...d will use to tell us I/O is done. */
pipe(p);
@@ -1471,14 +1501,18 @@ static void setup_block_file(const char *filename)
vblk->fd = open_or_die(filename, O_RDWR|O_LARGEFILE);
vblk->len = lseek64(vblk->fd, 0, SEEK_END);
+ /* We support barriers. */
+ add_feature(dev, VIRTIO_BLK_F_BARRIER);
+
/* Tell Guest how many sectors this device has. */
- cap = cpu_to_le64(vblk->len / 512);
- add_desc_field(dev, VIRTIO_CONFIG_BLK_F_CAPACITY, sizeof(cap), &cap);
+ conf.capacity = cpu_to_le64(vblk->len / 512);
/* Tell Guest not to put in too many descriptors at onc...
2009 Sep 21
0
[PATCH 5/6] virtio_blk: set QUEUE_ORDERED_DRAIN by default
...tell block layer that queue is ordered */
+ /*
+ * If barriers are supported, tell block layer that queue is ordered.
+ *
+ * If no barriers are supported assume the host uses synchronous
+ * writes and just drain the the queue before and after the barrier.
+ */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))
blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_TAG, NULL);
+ else
+ blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_DRAIN, NULL);
/* If disk is read-only in the host, the guest should obey */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))
2008 May 27
1
[PATCH/RFC] virtio_blk: check for hardsector size from host
...LK_SIZE,
+ offsetof(struct virtio_blk_config, blk_size),
+ &blk_size);
+ if (!err)
+ blk_queue_hardsect_size(vblk->disk->queue, blk_size);
+
add_disk(vblk->disk);
return 0;
@@ -329,7 +337,7 @@ static struct virtio_device_id id_table[
static unsigned int features[] = {
VIRTIO_BLK_F_BARRIER, VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX,
- VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO,
+ VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
};
static struct virtio_driver virtio_blk = {
Index: kvm/include/linux/virtio_blk.h
==========================================================...
2009 Sep 21
0
[PATCH 5/6] virtio_blk: set QUEUE_ORDERED_DRAIN by default
...tell block layer that queue is ordered */
+ /*
+ * If barriers are supported, tell block layer that queue is ordered.
+ *
+ * If no barriers are supported assume the host uses synchronous
+ * writes and just drain the the queue before and after the barrier.
+ */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))
blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_TAG, NULL);
+ else
+ blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_DRAIN, NULL);
/* If disk is read-only in the host, the guest should obey */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))
2014 Oct 22
0
[PATCH RFC v2 16/16] virtio_blk: fix types for in memory structures
...ex 9ad67b2..247c8ba 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -28,6 +28,7 @@
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
+#include <linux/virtio_types.h>
/* Feature bits */
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
@@ -114,18 +115,18 @@ struct virtio_blk_config {
/* This is the first element of the read scatter-gather list. */
struct virtio_blk_outhdr {
/* VIRTIO_BLK_T* */
- __u32 type;
+ __virtio32 type;
/* io priority. */
- __u32 ioprio;
+ __virtio32 ioprio;
/* Se...
2014 Oct 22
0
[PATCH RFC v3 16/16] virtio_blk: fix types for in memory structures
...ex 9ad67b2..247c8ba 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -28,6 +28,7 @@
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
+#include <linux/virtio_types.h>
/* Feature bits */
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
@@ -114,18 +115,18 @@ struct virtio_blk_config {
/* This is the first element of the read scatter-gather list. */
struct virtio_blk_outhdr {
/* VIRTIO_BLK_T* */
- __u32 type;
+ __virtio32 type;
/* io priority. */
- __u32 ioprio;
+ __virtio32 ioprio;
/* Se...
2014 Oct 22
0
[PATCH RFC v2 16/16] virtio_blk: fix types for in memory structures
...ex 9ad67b2..247c8ba 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -28,6 +28,7 @@
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
+#include <linux/virtio_types.h>
/* Feature bits */
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
@@ -114,18 +115,18 @@ struct virtio_blk_config {
/* This is the first element of the read scatter-gather list. */
struct virtio_blk_outhdr {
/* VIRTIO_BLK_T* */
- __u32 type;
+ __virtio32 type;
/* io priority. */
- __u32 ioprio;
+ __virtio32 ioprio;
/* Se...
2014 Oct 22
0
[PATCH RFC v3 16/16] virtio_blk: fix types for in memory structures
...ex 9ad67b2..247c8ba 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -28,6 +28,7 @@
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
+#include <linux/virtio_types.h>
/* Feature bits */
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
@@ -114,18 +115,18 @@ struct virtio_blk_config {
/* This is the first element of the read scatter-gather list. */
struct virtio_blk_outhdr {
/* VIRTIO_BLK_T* */
- __u32 type;
+ __virtio32 type;
/* io priority. */
- __u32 ioprio;
+ __virtio32 ioprio;
/* Se...
2008 May 27
1
[PATCH/RFC] virtio_blk: check for hardsector size from host
...LK_SIZE,
+ offsetof(struct virtio_blk_config, blk_size),
+ &blk_size);
+ if (!err)
+ blk_queue_hardsect_size(vblk->disk->queue, blk_size);
+
add_disk(vblk->disk);
return 0;
@@ -329,7 +337,7 @@ static struct virtio_device_id id_table[
static unsigned int features[] = {
VIRTIO_BLK_F_BARRIER, VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX,
- VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO,
+ VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
};
static struct virtio_driver virtio_blk = {
Index: kvm/include/linux/virtio_blk.h
==========================================================...
2016 Feb 24
1
[PATCH] virtio_blk: VIRTIO_BLK_F_WCE->VIRTIO_BLK_F_FLUSH
...+---
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index 19c66fc..c3f98df 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -43,11 +43,11 @@
#ifndef VIRTIO_BLK_NO_LEGACY
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
-#define VIRTIO_BLK_F_WCE 9 /* Writeback mode enabled after reset */
+#define VIRTIO_BLK_F_FLUSH 9 /* Writeback mode enabled after reset */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode ava...
2016 Feb 24
1
[PATCH] virtio_blk: VIRTIO_BLK_F_WCE->VIRTIO_BLK_F_FLUSH
...+---
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index 19c66fc..c3f98df 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -43,11 +43,11 @@
#ifndef VIRTIO_BLK_NO_LEGACY
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
-#define VIRTIO_BLK_F_WCE 9 /* Writeback mode enabled after reset */
+#define VIRTIO_BLK_F_FLUSH 9 /* Writeback mode enabled after reset */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode ava...
2009 Sep 29
0
[PATCH 3/4] virtio_blk: implement a request-based ID command, VIRTIO_BLK_T_GET_ID
...(copy_to_user(argp, opaque, VIRTIO_BLK_ID_BYTES))
+ err = -EFAULT;
- if (copy_to_user(argp, opaque, VIRTIO_BLK_ID_BYTES))
- err = -EFAULT;
-
-out_kfree:
kfree(opaque);
-out:
return err;
}
@@ -460,7 +497,8 @@ static struct virtio_device_id id_table[
static unsigned int features[] = {
VIRTIO_BLK_F_BARRIER, VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX,
VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
- VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_IDENTIFY, VIRTIO_BLK_F_FLUSH
+ VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_IDENTIFY, VIRTIO_BLK_F_FLUSH,
+ VIRTIO_BLK_F_GET_ID
};
/*
diff --git a/include/linux/vi...
2009 Sep 29
0
[PATCH 3/4] virtio_blk: implement a request-based ID command, VIRTIO_BLK_T_GET_ID
...(copy_to_user(argp, opaque, VIRTIO_BLK_ID_BYTES))
+ err = -EFAULT;
- if (copy_to_user(argp, opaque, VIRTIO_BLK_ID_BYTES))
- err = -EFAULT;
-
-out_kfree:
kfree(opaque);
-out:
return err;
}
@@ -460,7 +497,8 @@ static struct virtio_device_id id_table[
static unsigned int features[] = {
VIRTIO_BLK_F_BARRIER, VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX,
VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
- VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_IDENTIFY, VIRTIO_BLK_F_FLUSH
+ VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_IDENTIFY, VIRTIO_BLK_F_FLUSH,
+ VIRTIO_BLK_F_GET_ID
};
/*
diff --git a/include/linux/vi...
2008 Nov 14
2
[PATCH RFC] virtio: use QUEUE_FLAG_CLUSTER in virtio_blk
...->cylinders = get_capacity(bd->bd_disk) >> 11;
}
+
+ printk("totsegs = %lu totlen = %lu\n", totsegs, totlen);
+ totsegs = totlen = 0;
return 0;
}
@@ -260,6 +271,9 @@
/* If barriers are supported, tell block layer that queue is ordered */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))
blk_queue_ordered(vblk->disk->queue, QUEUE_ORDERED_TAG, NULL);
+
+ /* Gather adjacent buffers to minimize sg length. */
+ queue_flag_set(QUEUE_FLAG_CLUSTER, vblk->disk->queue);
/* If disk is read-only in the host, the guest should obey */
if (virtio_has_feature(vdev, VIRTIO_B...