mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-27 13:30:52 +00:00
c61ebf362d
"qemu/typedefs.h" is enough for include/block/write-threshold.h header with forward declaration of BlockDriverState. Also drop extra includes from block/write-threshold.c and tests/unit/test-write-threshold.c Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20210506090621.11848-9-vsementsov@virtuozzo.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
|
|
* QEMU System Emulator block write threshold notification
|
|
*
|
|
* Copyright Red Hat, Inc. 2014
|
|
*
|
|
* Authors:
|
|
* Francesco Romani <fromani@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*/
|
|
|
|
#ifndef BLOCK_WRITE_THRESHOLD_H
|
|
#define BLOCK_WRITE_THRESHOLD_H
|
|
|
|
#include "qemu/typedefs.h"
|
|
|
|
/*
|
|
* bdrv_write_threshold_set:
|
|
*
|
|
* Set the write threshold for block devices, in bytes.
|
|
* Notify when a write exceeds the threshold, meaning the device
|
|
* is becoming full, so it can be transparently resized.
|
|
* To be used with thin-provisioned block devices.
|
|
*
|
|
* Use threshold_bytes == 0 to disable.
|
|
*/
|
|
void bdrv_write_threshold_set(BlockDriverState *bs, uint64_t threshold_bytes);
|
|
|
|
/*
|
|
* bdrv_write_threshold_get
|
|
*
|
|
* Get the configured write threshold, in bytes.
|
|
* Zero means no threshold configured.
|
|
*/
|
|
uint64_t bdrv_write_threshold_get(const BlockDriverState *bs);
|
|
|
|
/*
|
|
* bdrv_write_threshold_check_write
|
|
*
|
|
* Check whether the specified request exceeds the write threshold.
|
|
* If so, send a corresponding event and disable write threshold checking.
|
|
*/
|
|
void bdrv_write_threshold_check_write(BlockDriverState *bs, int64_t offset,
|
|
int64_t bytes);
|
|
|
|
#endif
|