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authorPeter Lieven <pl@kamp.de>2013-10-24 12:06:51 +0200
committerKevin Wolf <kwolf@redhat.com>2013-11-28 10:30:51 +0100
commitaa7bfbfff792538a9eeefe879fc4c629aa0b4203 (patch)
tree76e999bf142961962cbce6bbfa3a3c9888e67ca3
parent6faac15fa80c4c1f813d96afc13bceaa3bc5ffe7 (diff)
downloadqemu-arm-aa7bfbfff792538a9eeefe879fc4c629aa0b4203.tar.gz
block: add flags to bdrv_*_write_zeroes
Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
-rw-r--r--block-migration.c2
-rw-r--r--block.c20
-rw-r--r--block/backup.c3
-rw-r--r--block/qcow2-cluster.c2
-rw-r--r--block/qcow2.c2
-rw-r--r--block/qed.c3
-rw-r--r--block/raw_bsd.c5
-rw-r--r--block/vmdk.c3
-rw-r--r--include/block/block.h4
-rw-r--r--include/block/block_int.h2
-rw-r--r--qemu-io-cmds.c2
11 files changed, 27 insertions, 21 deletions
diff --git a/block-migration.c b/block-migration.c
index daf9ec1eab..713a8e36e1 100644
--- a/block-migration.c
+++ b/block-migration.c
@@ -780,7 +780,7 @@ static int block_load(QEMUFile *f, void *opaque, int version_id)
}
if (flags & BLK_MIG_FLAG_ZERO_BLOCK) {
- ret = bdrv_write_zeroes(bs, addr, nr_sectors);
+ ret = bdrv_write_zeroes(bs, addr, nr_sectors, 0);
} else {
buf = g_malloc(BLOCK_SIZE);
qemu_get_buffer(f, buf, BLOCK_SIZE);
diff --git a/block.c b/block.c
index 3dc6c12c9d..e14ba48720 100644
--- a/block.c
+++ b/block.c
@@ -79,7 +79,7 @@ static BlockDriverAIOCB *bdrv_co_aio_rw_vector(BlockDriverState *bs,
bool is_write);
static void coroutine_fn bdrv_co_do_rw(void *opaque);
static int coroutine_fn bdrv_co_do_write_zeroes(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors);
+ int64_t sector_num, int nb_sectors, BdrvRequestFlags flags);
static QTAILQ_HEAD(, BlockDriverState) bdrv_states =
QTAILQ_HEAD_INITIALIZER(bdrv_states);
@@ -2392,10 +2392,11 @@ int bdrv_writev(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov)
return bdrv_rwv_co(bs, sector_num, qiov, true, 0);
}
-int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, int nb_sectors)
+int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, BdrvRequestFlags flags)
{
return bdrv_rw_co(bs, sector_num, NULL, nb_sectors, true,
- BDRV_REQ_ZERO_WRITE);
+ BDRV_REQ_ZERO_WRITE | flags);
}
int bdrv_pread(BlockDriverState *bs, int64_t offset,
@@ -2577,7 +2578,7 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BlockDriverState *bs,
if (drv->bdrv_co_write_zeroes &&
buffer_is_zero(bounce_buffer, iov.iov_len)) {
ret = bdrv_co_do_write_zeroes(bs, cluster_sector_num,
- cluster_nb_sectors);
+ cluster_nb_sectors, 0);
} else {
/* This does not change the data on the disk, it is not necessary
* to flush even in cache=writethrough mode.
@@ -2711,7 +2712,7 @@ int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs,
}
static int coroutine_fn bdrv_co_do_write_zeroes(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors)
+ int64_t sector_num, int nb_sectors, BdrvRequestFlags flags)
{
BlockDriver *drv = bs->drv;
QEMUIOVector qiov;
@@ -2723,7 +2724,7 @@ static int coroutine_fn bdrv_co_do_write_zeroes(BlockDriverState *bs,
/* First try the efficient write zeroes operation */
if (drv->bdrv_co_write_zeroes) {
- ret = drv->bdrv_co_write_zeroes(bs, sector_num, nb_sectors);
+ ret = drv->bdrv_co_write_zeroes(bs, sector_num, nb_sectors, flags);
if (ret != -ENOTSUP) {
return ret;
}
@@ -2778,7 +2779,7 @@ static int coroutine_fn bdrv_co_do_writev(BlockDriverState *bs,
if (ret < 0) {
/* Do nothing, write notifier decided to fail this request */
} else if (flags & BDRV_REQ_ZERO_WRITE) {
- ret = bdrv_co_do_write_zeroes(bs, sector_num, nb_sectors);
+ ret = bdrv_co_do_write_zeroes(bs, sector_num, nb_sectors, flags);
} else {
ret = drv->bdrv_co_writev(bs, sector_num, nb_sectors, qiov);
}
@@ -2812,12 +2813,13 @@ int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num,
}
int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors)
+ int64_t sector_num, int nb_sectors,
+ BdrvRequestFlags flags)
{
trace_bdrv_co_write_zeroes(bs, sector_num, nb_sectors);
return bdrv_co_do_writev(bs, sector_num, nb_sectors, NULL,
- BDRV_REQ_ZERO_WRITE);
+ BDRV_REQ_ZERO_WRITE | flags);
}
/**
diff --git a/block/backup.c b/block/backup.c
index cad14c90b2..830a179d6d 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -138,7 +138,8 @@ static int coroutine_fn backup_do_cow(BlockDriverState *bs,
if (buffer_is_zero(iov.iov_base, iov.iov_len)) {
ret = bdrv_co_write_zeroes(job->target,
- start * BACKUP_SECTORS_PER_CLUSTER, n);
+ start * BACKUP_SECTORS_PER_CLUSTER,
+ n, 0);
} else {
ret = bdrv_co_writev(job->target,
start * BACKUP_SECTORS_PER_CLUSTER, n,
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 791083a0ef..11f9c50aa7 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -1613,7 +1613,7 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
}
ret = bdrv_write_zeroes(bs->file, offset / BDRV_SECTOR_SIZE,
- s->cluster_sectors);
+ s->cluster_sectors, 0);
if (ret < 0) {
if (!preallocated) {
qcow2_free_clusters(bs, offset, s->cluster_size,
diff --git a/block/qcow2.c b/block/qcow2.c
index 6e5d98dc48..2fe37ed6cb 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1696,7 +1696,7 @@ static int qcow2_make_empty(BlockDriverState *bs)
}
static coroutine_fn int qcow2_co_write_zeroes(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors)
+ int64_t sector_num, int nb_sectors, BdrvRequestFlags flags)
{
int ret;
BDRVQcowState *s = bs->opaque;
diff --git a/block/qed.c b/block/qed.c
index 6c0cba04f3..adc2736dd7 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -1397,7 +1397,8 @@ static void coroutine_fn qed_co_write_zeroes_cb(void *opaque, int ret)
static int coroutine_fn bdrv_qed_co_write_zeroes(BlockDriverState *bs,
int64_t sector_num,
- int nb_sectors)
+ int nb_sectors,
+ BdrvRequestFlags flags)
{
BlockDriverAIOCB *blockacb;
BDRVQEDState *s = bs->opaque;
diff --git a/block/raw_bsd.c b/block/raw_bsd.c
index 2265dcc03f..fb5181b127 100644
--- a/block/raw_bsd.c
+++ b/block/raw_bsd.c
@@ -68,9 +68,10 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
}
static int coroutine_fn raw_co_write_zeroes(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors)
+ int64_t sector_num, int nb_sectors,
+ BdrvRequestFlags flags)
{
- return bdrv_co_write_zeroes(bs->file, sector_num, nb_sectors);
+ return bdrv_co_write_zeroes(bs->file, sector_num, nb_sectors, flags);
}
static int coroutine_fn raw_co_discard(BlockDriverState *bs,
diff --git a/block/vmdk.c b/block/vmdk.c
index a7ebd0f125..6555663a7e 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1419,7 +1419,8 @@ static coroutine_fn int vmdk_co_write(BlockDriverState *bs, int64_t sector_num,
static int coroutine_fn vmdk_co_write_zeroes(BlockDriverState *bs,
int64_t sector_num,
- int nb_sectors)
+ int nb_sectors,
+ BdrvRequestFlags flags)
{
int ret;
BDRVVmdkState *s = bs->opaque;
diff --git a/include/block/block.h b/include/block/block.h
index ba2082c0c6..8ba9f0c80f 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -192,7 +192,7 @@ int bdrv_read_unthrottled(BlockDriverState *bs, int64_t sector_num,
int bdrv_write(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors);
int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors);
+ int nb_sectors, BdrvRequestFlags flags);
int bdrv_writev(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov);
int bdrv_pread(BlockDriverState *bs, int64_t offset,
void *buf, int count);
@@ -214,7 +214,7 @@ int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num,
* because it may allocate memory for the entire region.
*/
int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors);
+ int nb_sectors, BdrvRequestFlags flags);
BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs,
const char *backing_file);
int bdrv_get_backing_file_depth(BlockDriverState *bs);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 166606615c..d798208aff 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -130,7 +130,7 @@ struct BlockDriver {
* instead.
*/
int coroutine_fn (*bdrv_co_write_zeroes)(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors);
+ int64_t sector_num, int nb_sectors, BdrvRequestFlags flags);
int coroutine_fn (*bdrv_co_discard)(BlockDriverState *bs,
int64_t sector_num, int nb_sectors);
int64_t coroutine_fn (*bdrv_co_get_block_status)(BlockDriverState *bs,
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 667f4e4f3a..7e9fecb34f 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -442,7 +442,7 @@ static void coroutine_fn co_write_zeroes_entry(void *opaque)
CoWriteZeroes *data = opaque;
data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE,
- data->count / BDRV_SECTOR_SIZE);
+ data->count / BDRV_SECTOR_SIZE, 0);
data->done = true;
if (data->ret < 0) {
*data->total = data->ret;