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[Qemu-devel] [PATCH v2 06/12] block/json: Add functions for writing zero
From: |
Max Reitz |
Subject: |
[Qemu-devel] [PATCH v2 06/12] block/json: Add functions for writing zeroes etc. |
Date: |
Fri, 7 Mar 2014 23:55:50 +0100 |
Add passthrough functions for bdrv_aio_discard(),
bdrv_co_write_zeroes(), bdrv_truncate() and bdrv_has_zero_init().
Signed-off-by: Max Reitz <address@hidden>
---
block/json.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/block/json.c b/block/json.c
index f40343e..e4cdb68 100644
--- a/block/json.c
+++ b/block/json.c
@@ -95,6 +95,21 @@ static BlockDriverAIOCB *json_aio_flush(BlockDriverState *bs,
return bdrv_aio_flush(bs->file, cb, opaque);
}
+static BlockDriverAIOCB *json_aio_discard(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors,
+ BlockDriverCompletionFunc *cb,
+ void *opaque)
+{
+ return bdrv_aio_discard(bs->file, sector_num, nb_sectors, cb, opaque);
+}
+
+static coroutine_fn int json_co_write_zeroes(BlockDriverState *bs,
+ int64_t sector_num, int
nb_sectors,
+ BdrvRequestFlags flags)
+{
+ return bdrv_co_write_zeroes(bs->file, sector_num, nb_sectors, flags);
+}
+
static void json_invalidate_cache(BlockDriverState *bs)
{
return bdrv_invalidate_cache(bs->file);
@@ -105,6 +120,16 @@ static int64_t json_getlength(BlockDriverState *bs)
return bdrv_getlength(bs->file);
}
+static int json_truncate(BlockDriverState *bs, int64_t offset)
+{
+ return bdrv_truncate(bs->file, offset);
+}
+
+static int json_has_zero_init(BlockDriverState *bs)
+{
+ return bdrv_has_zero_init(bs->file);
+}
+
static int json_refresh_limits(BlockDriverState *bs)
{
bs->bl = bs->file->bl;
@@ -128,12 +153,17 @@ static BlockDriver bdrv_json = {
.bdrv_aio_readv = json_aio_readv,
.bdrv_aio_writev = json_aio_writev,
.bdrv_aio_flush = json_aio_flush,
+ .bdrv_aio_discard = json_aio_discard,
+
+ .bdrv_co_write_zeroes = json_co_write_zeroes,
.bdrv_invalidate_cache = json_invalidate_cache,
.has_variable_length = true,
.bdrv_getlength = json_getlength,
+ .bdrv_truncate = json_truncate,
+ .bdrv_has_zero_init = json_has_zero_init,
.bdrv_refresh_limits = json_refresh_limits,
.bdrv_get_info = json_get_info,
--
1.9.0
- [Qemu-devel] [PATCH v2 00/12] block/json: Add JSON protocol driver, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 01/12] qdict: Add qdict_join(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 02/12] check-qdict: Add test for qdict_join(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 03/12] block: Add "has_single_child" field for drivers, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 04/12] block/json: Add JSON protocol driver, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 05/12] block/json: Add functions for cache control, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 06/12] block/json: Add functions for writing zeroes etc.,
Max Reitz <=
- [Qemu-devel] [PATCH v2 07/12] block/json: Add bdrv_co_get_block_status(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 08/12] block/json: Add ioctl etc., Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 09/12] block/json: Add bdrv_get_specific_info(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 10/12] block/raw_bsd: Add bdrv_get_specific_info(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 11/12] block/qapi: Ignore filters on top for format name, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 12/12] iotests: Add test for the JSON protocol, Max Reitz, 2014/03/07