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block: drop write notifiers

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They are unused now.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210506090621.11848-3-vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2021-05-06 12:06:15 +03:00 committed by Max Reitz
parent 94783301b8
commit ad578c56d5
3 changed files with 0 additions and 19 deletions
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1
block.c
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@ -400,7 +400,6 @@ BlockDriverState *bdrv_new(void)
for (i = 0; i < BLOCK_OP_TYPE_MAX; i++) { for (i = 0; i < BLOCK_OP_TYPE_MAX; i++) {
QLIST_INIT(&bs->op_blockers[i]); QLIST_INIT(&bs->op_blockers[i]);
} }
notifier_with_return_list_init(&bs->before_write_notifiers);
qemu_co_mutex_init(&bs->reqs_lock); qemu_co_mutex_init(&bs->reqs_lock);
qemu_mutex_init(&bs->dirty_bitmap_mutex); qemu_mutex_init(&bs->dirty_bitmap_mutex);
bs->refcnt = 1; bs->refcnt = 1;

6
block/io.c
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@ -3165,12 +3165,6 @@ bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov)
return true; return true;
} }
void bdrv_add_before_write_notifier(BlockDriverState *bs,
NotifierWithReturn *notifier)
{
notifier_with_return_list_add(&bs->before_write_notifiers, notifier);
}
void bdrv_io_plug(BlockDriverState *bs) void bdrv_io_plug(BlockDriverState *bs)
{ {
BdrvChild *child; BdrvChild *child;

12
include/block/block_int.h
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@ -954,9 +954,6 @@ struct BlockDriverState {
*/ */
int64_t total_sectors; int64_t total_sectors;
/* Callback before write request is processed */
NotifierWithReturnList before_write_notifiers;
/* threshold limit for writes, in bytes. "High water mark". */ /* threshold limit for writes, in bytes. "High water mark". */
uint64_t write_threshold_offset; uint64_t write_threshold_offset;
@ -1083,15 +1080,6 @@ void bdrv_parse_filename_strip_prefix(const char *filename, const char *prefix,
bool bdrv_backing_overridden(BlockDriverState *bs); bool bdrv_backing_overridden(BlockDriverState *bs);
/**
* bdrv_add_before_write_notifier:
*
* Register a callback that is invoked before write requests are processed but
* after any throttling or waiting for overlapping requests.
*/
void bdrv_add_before_write_notifier(BlockDriverState *bs,
NotifierWithReturn *notifier);
/** /**
* bdrv_add_aio_context_notifier: * bdrv_add_aio_context_notifier:
* *