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[Qemu-block] [PULL 02/37] block: Add blk_remove_bs()
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PULL 02/37] block: Add blk_remove_bs() |
Date: |
Thu, 5 Nov 2015 19:17:30 +0100 |
From: Max Reitz <address@hidden>
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 <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
block/block-backend.c | 12 ++++++++++++
include/sysemu/block-backend.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/block/block-backend.c b/block/block-backend.c
index 19fdaae..878c448 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 9306a52..14a6d32 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);
--
1.8.3.1
- [Qemu-block] [PULL 00/37] Block layer patches, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 02/37] block: Add blk_remove_bs(),
Kevin Wolf <=
- [Qemu-block] [PULL 03/37] block: Make bdrv_states public, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 01/37] block: Don't call blk_bs() twice in bdrv_lookup_bs(), Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 05/37] blockdev: Add blockdev-open-tray, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 04/37] block: Add functions for inheriting a BBRS, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 06/37] blockdev: Add blockdev-close-tray, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 07/37] blockdev: Add blockdev-remove-medium, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 08/37] blockdev: Add blockdev-insert-medium, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 10/37] blockdev: Implement change with basic operations, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 11/37] block: Inquire tray state before tray-moved events, Kevin Wolf, 2015/11/05
- [Qemu-block] [PULL 12/37] qmp: Introduce blockdev-change-medium, Kevin Wolf, 2015/11/05