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[Qemu-devel] [RFC PATCH 4/7] block: copy enable_write_cache in bdrv_appe
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [RFC PATCH 4/7] block: copy enable_write_cache in bdrv_append |
Date: |
Fri, 18 May 2012 16:18:29 +0200 |
Because the guest will be able to flip enable_write_cache, the actual
state may not match what is used to open the new snapshot.
Signed-off-by: Paolo Bonzini <address@hidden>
---
block.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/block.c b/block.c
index b3d0054..e89b35a 100644
--- a/block.c
+++ b/block.c
@@ -989,6 +989,8 @@ void bdrv_append(BlockDriverState *bs_new, BlockDriverState
*bs_top)
tmp.buffer_alignment = bs_top->buffer_alignment;
tmp.copy_on_read = bs_top->copy_on_read;
+ tmp.enable_write_cache = bs_top->enable_write_cache;
+
/* i/o timing parameters */
tmp.slice_time = bs_top->slice_time;
tmp.slice_start = bs_top->slice_start;
--
1.7.10.1
- [Qemu-devel] [RFC PATCH 0/7] Manual writethrough cache and cache mode toggle, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 2/7] savevm: flush after saving vm state, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 1/7] block: flush in writethrough mode after writes, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 3/7] block: do not pass BDRV_O_CACHE_WB to the protocol, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 5/7] block: add bdrv_set_enable_write_cache, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 4/7] block: copy enable_write_cache in bdrv_append,
Paolo Bonzini <=
- [Qemu-devel] [RFC PATCH 6/7] ide: support enable/disable write cache, Paolo Bonzini, 2012/05/18
- [Qemu-devel] [RFC PATCH 7/7] block: do not handle writethrough in qcow2 caches, Paolo Bonzini, 2012/05/18