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block/io: wait for serialising requests when a request becomes serialising

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Marking without waiting would not result in actual serialising behavior.
Thus, make a call bdrv_mark_request_serialising sufficient for
serialisation to happen.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1578495356-46219-3-git-send-email-pbonzini@redhat.com
Message-Id: <1578495356-46219-3-git-send-email-pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-01-08 15:55:55 +01:00 • committed by Stefan Hajnoczi
parent c53cb42769
commit 18fbd0dec7
3 changed files with 18 additions and 26 deletions
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3
include/block/block_int.h
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@ -999,8 +999,7 @@ extern unsigned int bdrv_drain_all_count;
void bdrv_apply_subtree_drain(BdrvChild *child, BlockDriverState *new_parent);
void bdrv_unapply_subtree_drain(BdrvChild *child, BlockDriverState *old_parent);
bool coroutine_fn bdrv_wait_serialising_requests(BdrvTrackedRequest *self);
void bdrv_mark_request_serialising(BdrvTrackedRequest *req, uint64_t align);
bool coroutine_fn bdrv_mark_request_serialising(BdrvTrackedRequest *req, uint64_t align);
BdrvTrackedRequest *coroutine_fn bdrv_co_get_self_request(BlockDriverState *bs);
int get_tmp_filename(char *filename, int size);