diff options
| author | Emanuele Giuseppe Esposito <eesposit@redhat.com> | 2023-01-13 21:42:10 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-02-01 16:52:32 +0100 |
| commit | 2c75261cc2b5d1cdd6f012d7a3ccbc089f966dcb (patch) | |
| tree | 55578b863cf3691236c88e52818ea3a0d6f4fad0 /block/copy-on-read.c | |
| parent | 2531b390fbf67ceccf63f7d236ab2a998f135624 (diff) | |
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>
Diffstat (limited to 'block/copy-on-read.c')
| -rw-r--r-- | block/copy-on-read.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/copy-on-read.c b/block/copy-on-read.c index 4204931277..3280eb2feb 100644 --- a/block/copy-on-read.c +++ b/block/copy-on-read.c @@ -223,9 +223,9 @@ static void coroutine_fn cor_co_eject(BlockDriverState *bs, bool eject_flag) } -static void cor_lock_medium(BlockDriverState *bs, bool locked) +static void coroutine_fn cor_co_lock_medium(BlockDriverState *bs, bool locked) { - bdrv_lock_medium(bs->file->bs, locked); + bdrv_co_lock_medium(bs->file->bs, locked); } @@ -259,7 +259,7 @@ static BlockDriver bdrv_copy_on_read = { .bdrv_co_pwritev_compressed = cor_co_pwritev_compressed, .bdrv_co_eject = cor_co_eject, - .bdrv_lock_medium = cor_lock_medium, + .bdrv_co_lock_medium = cor_co_lock_medium, .has_variable_length = true, .is_filter = true, |