From 89e6ba9d5ad137ecb8f981f1ec28ee519812bf50 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 6 Nov 2013 12:37:43 +0100
Subject: [PATCH 12/81] block: introduce bdrv_get_block_status API
RH-Author: Paolo Bonzini <pbonzini@redhat.com>
Message-id: <1383741463-25811-1-git-send-email-pbonzini@redhat.com>
Patchwork-id: 55521
O-Subject: [RHEL 7.0 qemu-kvm PATCH v2 12/26] block: introduce bdrv_get_block_status API
Bugzilla: 989646
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
For now, bdrv_get_block_status is just another name for bdrv_is_allocated.
The next patches will add more flags.
This also touches all block drivers with a mostly mechanical rename. The
sole exception is cow; because it calls cow_co_is_allocated from the read
code, we keep that function and make cow_co_get_block_status a wrapper.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit b6b8a33354a448ee421f57676c1a93a536a63269)
---
block.c | 46 ++++++++++++++++++++++++++--------------------
block/cow.c | 8 +++++++-
block/qcow.c | 4 ++--
block/qcow2.c | 4 ++--
block/qed.c | 4 ++--
block/raw-posix.c | 4 ++--
block/raw.c | 6 +++---
block/sheepdog.c | 12 ++++++------
block/vdi.c | 4 ++--
block/vmdk.c | 4 ++--
block/vvfat.c | 4 ++--
include/block/block.h | 2 ++
include/block/block_int.h | 2 +-
13 files changed, 59 insertions(+), 45 deletions(-)
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
block.c | 46 +++++++++++++++++++++++++-------------------
block/cow.c | 8 ++++++-
block/qcow.c | 4 +-
block/qcow2.c | 4 +-
block/qed.c | 4 +-
block/raw-posix.c | 4 +-
block/raw.c | 6 ++--
block/sheepdog.c | 12 +++++-----
block/vdi.c | 4 +-
block/vmdk.c | 4 +-
block/vvfat.c | 4 +-
include/block/block.h | 2 +
include/block/block_int.h | 2 +-
13 files changed, 59 insertions(+), 45 deletions(-)
diff --git a/block.c b/block.c
index f5d6658..772f5b7 100644
--- a/block.c
+++ b/block.c
@@ -3010,15 +3010,15 @@ int bdrv_has_zero_init(BlockDriverState *bs)
return 1;
}
-typedef struct BdrvCoIsAllocatedData {
+typedef struct BdrvCoGetBlockStatusData {
BlockDriverState *bs;
BlockDriverState *base;
int64_t sector_num;
int nb_sectors;
int *pnum;
- int ret;
+ int64_t ret;
bool done;
-} BdrvCoIsAllocatedData;
+} BdrvCoGetBlockStatusData;
/*
* Returns true iff the specified sector is present in the disk image. Drivers
@@ -3035,9 +3035,9 @@ typedef struct BdrvCoIsAllocatedData {
* 'nb_sectors' is the max value 'pnum' should be set to. If nb_sectors goes
* beyond the end of the disk image it will be clamped.
*/
-static int coroutine_fn bdrv_co_is_allocated(BlockDriverState *bs,
- int64_t sector_num,
- int nb_sectors, int *pnum)
+static int64_t coroutine_fn bdrv_co_get_block_status(BlockDriverState *bs,
+ int64_t sector_num,
+ int nb_sectors, int *pnum)
{
int64_t length;
int64_t n;
@@ -3057,35 +3057,35 @@ static int coroutine_fn bdrv_co_is_allocated(BlockDriverState *bs,
nb_sectors = n;
}
- if (!bs->drv->bdrv_co_is_allocated) {
+ if (!bs->drv->bdrv_co_get_block_status) {
*pnum = nb_sectors;
return 1;
}
- return bs->drv->bdrv_co_is_allocated(bs, sector_num, nb_sectors, pnum);
+ return bs->drv->bdrv_co_get_block_status(bs, sector_num, nb_sectors, pnum);
}
-/* Coroutine wrapper for bdrv_is_allocated() */
-static void coroutine_fn bdrv_is_allocated_co_entry(void *opaque)
+/* Coroutine wrapper for bdrv_get_block_status() */
+static void coroutine_fn bdrv_get_block_status_co_entry(void *opaque)
{
- BdrvCoIsAllocatedData *data = opaque;
+ BdrvCoGetBlockStatusData *data = opaque;
BlockDriverState *bs = data->bs;
- data->ret = bdrv_co_is_allocated(bs, data->sector_num, data->nb_sectors,
- data->pnum);
+ data->ret = bdrv_co_get_block_status(bs, data->sector_num, data->nb_sectors,
+ data->pnum);
data->done = true;
}
/*
- * Synchronous wrapper around bdrv_co_is_allocated().
+ * Synchronous wrapper around bdrv_co_get_block_status().
*
- * See bdrv_co_is_allocated() for details.
+ * See bdrv_co_get_block_status() for details.
*/
-int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
- int *pnum)
+int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, int *pnum)
{
Coroutine *co;
- BdrvCoIsAllocatedData data = {
+ BdrvCoGetBlockStatusData data = {
.bs = bs,
.sector_num = sector_num,
.nb_sectors = nb_sectors,
@@ -3095,9 +3095,9 @@ int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
if (qemu_in_coroutine()) {
/* Fast-path if already in coroutine context */
- bdrv_is_allocated_co_entry(&data);
+ bdrv_get_block_status_co_entry(&data);
} else {
- co = qemu_coroutine_create(bdrv_is_allocated_co_entry);
+ co = qemu_coroutine_create(bdrv_get_block_status_co_entry);
qemu_coroutine_enter(co, &data);
while (!data.done) {
qemu_aio_wait();
@@ -3106,6 +3106,12 @@ int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
return data.ret;
}
+int coroutine_fn bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, int *pnum)
+{
+ return bdrv_get_block_status(bs, sector_num, nb_sectors, pnum);
+}
+
/*
* Given an image chain: ... -> [BASE] -> [INTER1] -> [INTER2] -> [TOP]
*
diff --git a/block/cow.c b/block/cow.c
index 5a33b46..5e71c76 100644
--- a/block/cow.c
+++ b/block/cow.c
@@ -188,6 +188,12 @@ static int coroutine_fn cow_co_is_allocated(BlockDriverState *bs,
return changed;
}
+static int64_t coroutine_fn cow_co_get_block_status(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors, int *num_same)
+{
+ return cow_co_is_allocated(bs, sector_num, nb_sectors, num_same);
+}
+
static int cow_update_bitmap(BlockDriverState *bs, int64_t sector_num,
int nb_sectors)
{
@@ -370,7 +376,7 @@ static BlockDriver bdrv_cow = {
.bdrv_read = cow_co_read,
.bdrv_write = cow_co_write,
- .bdrv_co_is_allocated = cow_co_is_allocated,
+ .bdrv_co_get_block_status = cow_co_get_block_status,
.create_options = cow_create_options,
};
diff --git a/block/qcow.c b/block/qcow.c
index e2a64c7..05af25c 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -395,7 +395,7 @@ static uint64_t get_cluster_offset(BlockDriverState *bs,
return cluster_offset;
}
-static int coroutine_fn qcow_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn qcow_co_get_block_status(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int *pnum)
{
BDRVQcowState *s = bs->opaque;
@@ -895,7 +895,7 @@ static BlockDriver bdrv_qcow = {
.bdrv_co_readv = qcow_co_readv,
.bdrv_co_writev = qcow_co_writev,
- .bdrv_co_is_allocated = qcow_co_is_allocated,
+ .bdrv_co_get_block_status = qcow_co_get_block_status,
.bdrv_set_key = qcow_set_key,
.bdrv_make_empty = qcow_make_empty,
diff --git a/block/qcow2.c b/block/qcow2.c
index f6e64d2..8d3bf5d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -640,7 +640,7 @@ static int qcow2_reopen_prepare(BDRVReopenState *state,
return 0;
}
-static int coroutine_fn qcow2_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn qcow2_co_get_block_status(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int *pnum)
{
BDRVQcowState *s = bs->opaque;
@@ -1786,7 +1786,7 @@ static BlockDriver bdrv_qcow2 = {
.bdrv_close = qcow2_close,
.bdrv_reopen_prepare = qcow2_reopen_prepare,
.bdrv_create = qcow2_create,
- .bdrv_co_is_allocated = qcow2_co_is_allocated,
+ .bdrv_co_get_block_status = qcow2_co_get_block_status,
.bdrv_set_key = qcow2_set_key,
.bdrv_make_empty = qcow2_make_empty,
diff --git a/block/qed.c b/block/qed.c
index 4651403..a573039 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -667,7 +667,7 @@ static void qed_is_allocated_cb(void *opaque, int ret, uint64_t offset, size_t l
}
}
-static int coroutine_fn bdrv_qed_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn bdrv_qed_co_get_block_status(BlockDriverState *bs,
int64_t sector_num,
int nb_sectors, int *pnum)
{
@@ -1574,7 +1574,7 @@ static BlockDriver bdrv_qed = {
.bdrv_close = bdrv_qed_close,
.bdrv_reopen_prepare = bdrv_qed_reopen_prepare,
.bdrv_create = bdrv_qed_create,
- .bdrv_co_is_allocated = bdrv_qed_co_is_allocated,
+ .bdrv_co_get_block_status = bdrv_qed_co_get_block_status,
.bdrv_make_empty = bdrv_qed_make_empty,
.bdrv_aio_readv = bdrv_qed_aio_readv,
.bdrv_aio_writev = bdrv_qed_aio_writev,
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 90ce9f8..9a7c5a8 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1084,7 +1084,7 @@ static int raw_create(const char *filename, QEMUOptionParameter *options)
* 'nb_sectors' is the max value 'pnum' should be set to. If nb_sectors goes
* beyond the end of the disk image it will be clamped.
*/
-static int coroutine_fn raw_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
int64_t sector_num,
int nb_sectors, int *pnum)
{
@@ -1199,7 +1199,7 @@ static BlockDriver bdrv_file = {
.bdrv_reopen_abort = raw_reopen_abort,
.bdrv_close = raw_close,
.bdrv_create = raw_create,
- .bdrv_co_is_allocated = raw_co_is_allocated,
+ .bdrv_co_get_block_status = raw_co_get_block_status,
.bdrv_aio_readv = raw_aio_readv,
.bdrv_aio_writev = raw_aio_writev,
diff --git a/block/raw.c b/block/raw.c
index f78ff39..844a222 100644
--- a/block/raw.c
+++ b/block/raw.c
@@ -35,11 +35,11 @@ static void raw_close(BlockDriverState *bs)
{
}
-static int coroutine_fn raw_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
int64_t sector_num,
int nb_sectors, int *pnum)
{
- return bdrv_is_allocated(bs->file, sector_num, nb_sectors, pnum);
+ return bdrv_get_block_status(bs->file, sector_num, nb_sectors, pnum);
}
static int coroutine_fn raw_co_write_zeroes(BlockDriverState *bs,
@@ -134,7 +134,7 @@ static BlockDriver bdrv_raw = {
.bdrv_co_readv = raw_co_readv,
.bdrv_co_writev = raw_co_writev,
- .bdrv_co_is_allocated = raw_co_is_allocated,
+ .bdrv_co_get_block_status = raw_co_get_block_status,
.bdrv_co_write_zeroes = raw_co_write_zeroes,
.bdrv_co_discard = raw_co_discard,
diff --git a/block/sheepdog.c b/block/sheepdog.c
index 2758c26..e5398bb 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -2289,9 +2289,9 @@ static coroutine_fn int sd_co_discard(BlockDriverState *bs, int64_t sector_num,
return acb->ret;
}
-static coroutine_fn int
-sd_co_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
- int *pnum)
+static coroutine_fn int64_t
+sd_co_get_block_status(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
+ int *pnum)
{
BDRVSheepdogState *s = bs->opaque;
SheepdogInode *inode = &s->inode;
@@ -2356,7 +2356,7 @@ static BlockDriver bdrv_sheepdog = {
.bdrv_co_writev = sd_co_writev,
.bdrv_co_flush_to_disk = sd_co_flush_to_disk,
.bdrv_co_discard = sd_co_discard,
- .bdrv_co_is_allocated = sd_co_is_allocated,
+ .bdrv_co_get_block_status = sd_co_get_block_status,
.bdrv_snapshot_create = sd_snapshot_create,
.bdrv_snapshot_goto = sd_snapshot_goto,
@@ -2383,7 +2383,7 @@ static BlockDriver bdrv_sheepdog_tcp = {
.bdrv_co_writev = sd_co_writev,
.bdrv_co_flush_to_disk = sd_co_flush_to_disk,
.bdrv_co_discard = sd_co_discard,
- .bdrv_co_is_allocated = sd_co_is_allocated,
+ .bdrv_co_get_block_status = sd_co_get_block_status,
.bdrv_snapshot_create = sd_snapshot_create,
.bdrv_snapshot_goto = sd_snapshot_goto,
@@ -2410,7 +2410,7 @@ static BlockDriver bdrv_sheepdog_unix = {
.bdrv_co_writev = sd_co_writev,
.bdrv_co_flush_to_disk = sd_co_flush_to_disk,
.bdrv_co_discard = sd_co_discard,
- .bdrv_co_is_allocated = sd_co_is_allocated,
+ .bdrv_co_get_block_status = sd_co_get_block_status,
.bdrv_snapshot_create = sd_snapshot_create,
.bdrv_snapshot_goto = sd_snapshot_goto,
diff --git a/block/vdi.c b/block/vdi.c
index 2662d89..1252ad4 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -470,7 +470,7 @@ static int vdi_reopen_prepare(BDRVReopenState *state,
return 0;
}
-static int coroutine_fn vdi_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn vdi_co_get_block_status(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int *pnum)
{
/* TODO: Check for too large sector_num (in bdrv_is_allocated or here). */
@@ -779,7 +779,7 @@ static BlockDriver bdrv_vdi = {
.bdrv_close = vdi_close,
.bdrv_reopen_prepare = vdi_reopen_prepare,
.bdrv_create = vdi_create,
- .bdrv_co_is_allocated = vdi_co_is_allocated,
+ .bdrv_co_get_block_status = vdi_co_get_block_status,
.bdrv_make_empty = vdi_make_empty,
.bdrv_read = vdi_co_read,
diff --git a/block/vmdk.c b/block/vmdk.c
index 66735ab..a30c3b9 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1042,7 +1042,7 @@ static VmdkExtent *find_extent(BDRVVmdkState *s,
return NULL;
}
-static int coroutine_fn vmdk_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int *pnum)
{
BDRVVmdkState *s = bs->opaque;
@@ -1820,7 +1820,7 @@ static BlockDriver bdrv_vmdk = {
.bdrv_close = vmdk_close,
.bdrv_create = vmdk_create,
.bdrv_co_flush_to_disk = vmdk_co_flush,
- .bdrv_co_is_allocated = vmdk_co_is_allocated,
+ .bdrv_co_get_block_status = vmdk_co_get_block_status,
.bdrv_get_allocated_file_size = vmdk_get_allocated_file_size,
.create_options = vmdk_create_options,
diff --git a/block/vvfat.c b/block/vvfat.c
index 87b0279..510a559 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2874,7 +2874,7 @@ static coroutine_fn int vvfat_co_write(BlockDriverState *bs, int64_t sector_num,
return ret;
}
-static int coroutine_fn vvfat_co_is_allocated(BlockDriverState *bs,
+static int64_t coroutine_fn vvfat_co_get_block_status(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int* n)
{
BDRVVVFATState* s = bs->opaque;
@@ -2981,7 +2981,7 @@ static BlockDriver bdrv_vvfat = {
.bdrv_read = vvfat_co_read,
.bdrv_write = vvfat_co_write,
- .bdrv_co_is_allocated = vvfat_co_is_allocated,
+ .bdrv_co_get_block_status = vvfat_co_get_block_status,
};
static void bdrv_vvfat_init(void)
diff --git a/include/block/block.h b/include/block/block.h
index ec4d4aa..a733f5f 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -281,6 +281,8 @@ void bdrv_drain_all(void);
int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors);
int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors);
int bdrv_has_zero_init(BlockDriverState *bs);
+int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, int *pnum);
int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
int *pnum);
int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base,
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 267be48..ea2c811 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -124,7 +124,7 @@ struct BlockDriver {
int64_t sector_num, int nb_sectors);
int coroutine_fn (*bdrv_co_discard)(BlockDriverState *bs,
int64_t sector_num, int nb_sectors);
- int coroutine_fn (*bdrv_co_is_allocated)(BlockDriverState *bs,
+ int64_t coroutine_fn (*bdrv_co_get_block_status)(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int *pnum);
/*
--
1.7.1