tree 55578b863cf3691236c88e52818ea3a0d6f4fad0
parent 2531b390fbf67ceccf63f7d236ab2a998f135624
author Emanuele Giuseppe Esposito <eesposit@redhat.com> 1673642530 +0100
committer Kevin Wolf <kwolf@redhat.com> 1675266752 +0100

block: Convert bdrv_lock_medium() to co_wrapper

bdrv_lock_medium() is categorized as an I/O function, and it currently
doesn't run in a coroutine. We should let it take a graph rdlock since
it traverses the block nodes graph, which however is only possible in a
coroutine.

The only caller of this function is blk_lock_medium(). Therefore make
blk_lock_medium() a co_wrapper, so that it always creates a new
coroutine, and then make bdrv_lock_medium() a coroutine_fn where the
lock can be taken.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230113204212.359076-13-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>