motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 00:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

coroutine-lock: add mutex argument to CoQueue APIs

Browse source 
All that CoQueue needs in order to become thread-safe is help
from an external mutex.  Add this to the API.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20170213181244.16297-6-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-02-13 19:12:43 +01:00 • committed by Stefan Hajnoczi
parent f8c6e1cbc3
commit 1ace7ceac5
9 changed files with 34 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

4
block/qcow2-cluster.c
View file

@ -932,9 +932,7 @@ static int handle_dependencies(BlockDriverState *bs, uint64_t guest_offset,
if (bytes == 0) {
/* Wait for the dependency to complete. We need to recheck
* the free/allocated clusters when we continue. */
qemu_co_mutex_unlock(&s->lock);
qemu_co_queue_wait(&old_alloc->dependent_requests);
qemu_co_mutex_lock(&s->lock);
qemu_co_queue_wait(&old_alloc->dependent_requests, &s->lock);
return -EAGAIN;
}
}