mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-06 09:55:55 +00:00
block: Add blk_set_allow_aio_context_change()
Some users (like block jobs) can tolerate an AioContext change for their BlockBackend. Add a function that tells the BlockBackend that it can allow changes. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
parent
38475269d4
commit
980b0f943a
|
@ -71,6 +71,7 @@ struct BlockBackend {
|
|||
uint64_t shared_perm;
|
||||
bool disable_perm;
|
||||
|
||||
bool allow_aio_context_change;
|
||||
bool allow_write_beyond_eof;
|
||||
|
||||
NotifierList remove_bs_notifiers, insert_bs_notifiers;
|
||||
|
@ -1092,6 +1093,11 @@ void blk_set_allow_write_beyond_eof(BlockBackend *blk, bool allow)
|
|||
blk->allow_write_beyond_eof = allow;
|
||||
}
|
||||
|
||||
void blk_set_allow_aio_context_change(BlockBackend *blk, bool allow)
|
||||
{
|
||||
blk->allow_aio_context_change = allow;
|
||||
}
|
||||
|
||||
static int blk_check_byte_request(BlockBackend *blk, int64_t offset,
|
||||
size_t size)
|
||||
{
|
||||
|
@ -1891,6 +1897,10 @@ static bool blk_root_can_set_aio_ctx(BdrvChild *child, AioContext *ctx,
|
|||
{
|
||||
BlockBackend *blk = child->opaque;
|
||||
|
||||
if (blk->allow_aio_context_change) {
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Only manually created BlockBackends that are not attached to anything
|
||||
* can change their AioContext without updating their user. */
|
||||
if (!blk->name || blk->dev) {
|
||||
|
|
|
@ -103,6 +103,7 @@ int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm,
|
|||
void blk_get_perm(BlockBackend *blk, uint64_t *perm, uint64_t *shared_perm);
|
||||
|
||||
void blk_set_allow_write_beyond_eof(BlockBackend *blk, bool allow);
|
||||
void blk_set_allow_aio_context_change(BlockBackend *blk, bool allow);
|
||||
void blk_iostatus_enable(BlockBackend *blk);
|
||||
bool blk_iostatus_is_enabled(const BlockBackend *blk);
|
||||
BlockDeviceIoStatus blk_iostatus(const BlockBackend *blk);
|
||||
|
|
Loading…
Reference in a new issue