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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2019-09-20 11:25:43 +0300 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2019-10-17 17:02:32 -0400 |
| commit | d2c3080e41fd2c9bc36c996cc9d33804462ba803 (patch) | |
| tree | faa16eec6452d036d5762ca0329a4ecdcb0b1ab2 /include/block/block_int.h | |
| parent | b56a1e31759b750e111b4dd35171007bf493fc89 (diff) | |
| download | qemu-d2c3080e41fd2c9bc36c996cc9d33804462ba803.zip qemu-d2c3080e41fd2c9bc36c996cc9d33804462ba803.tar.gz qemu-d2c3080e41fd2c9bc36c996cc9d33804462ba803.tar.bz2 | |
block/qcow2: proper locking on bitmap add/remove paths
qmp_block_dirty_bitmap_add and do_block_dirty_bitmap_remove do acquire
aio context since 0a6c86d024c52b. But this is not enough: we also must
lock qcow2 mutex when access in-image metadata. Especially it concerns
freeing qcow2 clusters.
To achieve this, move qcow2_can_store_new_dirty_bitmap and
qcow2_remove_persistent_dirty_bitmap to coroutine context.
Since we work in coroutines in correct aio context, we don't need
context acquiring in blockdev.c anymore, drop it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20190920082543.23444-4-vsementsov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>
Diffstat (limited to 'include/block/block_int.h')
| -rw-r--r-- | include/block/block_int.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h index 6b511dd..32fb493 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -553,13 +553,13 @@ struct BlockDriver { * field of BlockDirtyBitmap's in case of success. */ int (*bdrv_reopen_bitmaps_rw)(BlockDriverState *bs, Error **errp); - bool (*bdrv_can_store_new_dirty_bitmap)(BlockDriverState *bs, - const char *name, - uint32_t granularity, - Error **errp); - int (*bdrv_remove_persistent_dirty_bitmap)(BlockDriverState *bs, + bool (*bdrv_co_can_store_new_dirty_bitmap)(BlockDriverState *bs, const char *name, + uint32_t granularity, Error **errp); + int (*bdrv_co_remove_persistent_dirty_bitmap)(BlockDriverState *bs, + const char *name, + Error **errp); /** * Register/unregister a buffer for I/O. For example, when the driver is |