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| author | Max Reitz | 2015-10-26 21:39:05 +0100 |
|---|---|---|
| committer | Kevin Wolf | 2015-11-11 16:22:46 +0100 |
| commit | 1c95f7e1aff8417ff6e6cc23bc2d04fbcf79d37e (patch) | |
| tree | b3d39c2fdb23e362525c5d81421996a971c982ad | |
| parent | block: Don't call blk_bs() twice in bdrv_lookup_bs() (diff) | |
| download | qemu-1c95f7e1aff8417ff6e6cc23bc2d04fbcf79d37e.tar.gz qemu-1c95f7e1aff8417ff6e6cc23bc2d04fbcf79d37e.tar.xz qemu-1c95f7e1aff8417ff6e6cc23bc2d04fbcf79d37e.zip | |
block: Add blk_remove_bs()
This function removes the BlockDriverState associated with the given
BlockBackend from that BB and sets the BDS pointer in the BB to NULL.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block/block-backend.c | 12 | ||||
| -rw-r--r-- | include/sysemu/block-backend.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/block/block-backend.c b/block/block-backend.c index 19fdaaec1a..878c448855 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -334,6 +334,18 @@ void blk_hide_on_behalf_of_hmp_drive_del(BlockBackend *blk) } /* + * Disassociates the currently associated BlockDriverState from @blk. + */ +void blk_remove_bs(BlockBackend *blk) +{ + blk_update_root_state(blk); + + blk->bs->blk = NULL; + bdrv_unref(blk->bs); + blk->bs = NULL; +} + +/* * Associates a new BlockDriverState with @blk. */ void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs) diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 9306a527bb..14a6d32bb2 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -72,6 +72,7 @@ BlockBackend *blk_by_name(const char *name); BlockBackend *blk_next(BlockBackend *blk); BlockDriverState *blk_bs(BlockBackend *blk); +void blk_remove_bs(BlockBackend *blk); void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs); void blk_hide_on_behalf_of_hmp_drive_del(BlockBackend *blk); |