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block: copy over job and dirty bitmap fields in bdrv_append

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While these should not be in use at the time a transaction is started,
a command in the prepare phase of a transaction might have added them,
so they need to be brought over.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-06-14 16:55:01 +02:00 committed by Kevin Wolf
parent 5c171afa4c
commit a9fc4408e3
1 changed files with 15 additions and 0 deletions
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15
block.c
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@ -1027,6 +1027,16 @@ void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top)
tmp.iostatus_enabled = bs_top->iostatus_enabled;
tmp.iostatus = bs_top->iostatus;
/* dirty bitmap */
tmp.dirty_count = bs_top->dirty_count;
tmp.dirty_bitmap = bs_top->dirty_bitmap;
assert(bs_new->dirty_bitmap == NULL);
/* job */
tmp.in_use = bs_top->in_use;
tmp.job = bs_top->job;
assert(bs_new->job == NULL);
/* keep the same entry in bdrv_states */
pstrcpy(tmp.device_name, sizeof(tmp.device_name), bs_top->device_name);
tmp.list = bs_top->list;
@ -1051,6 +1061,11 @@ void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top)
/* clear the copied fields in the new backing file */
bdrv_detach_dev(bs_new, bs_new->dev);
bs_new->job = NULL;
bs_new->in_use = 0;
bs_new->dirty_bitmap = NULL;
bs_new->dirty_count = 0;
qemu_co_queue_init(&bs_new->throttled_reqs);
memset(&bs_new->io_base, 0, sizeof(bs_new->io_base));
memset(&bs_new->io_limits, 0, sizeof(bs_new->io_limits));