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authorKevin Wolf <kwolf@redhat.com>2009-10-22 17:54:40 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2009-10-27 12:28:59 -0500
commite5f37649c670fdb212e83f376ed13d7f11804b17 (patch)
tree5830f95c2973bc13b3a1cbd38d061768e772bcd6 /posix-aio-compat.c
parentblock: Use new AsyncContext for bdrv_read/write emulation (diff)
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posix-aio-compat: Honour AsyncContext
Don't call callbacks that don't belong to the active AsyncContext. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'posix-aio-compat.c')
-rw-r--r--posix-aio-compat.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/posix-aio-compat.c b/posix-aio-compat.c
index 4901539b9..ec58288dc 100644
--- a/posix-aio-compat.c
+++ b/posix-aio-compat.c
@@ -48,6 +48,8 @@ struct qemu_paiocb {
ssize_t ret;
int active;
struct qemu_paiocb *next;
+
+ int async_context_id;
};
typedef struct PosixAioState {
@@ -419,6 +421,7 @@ static int posix_aio_process_queue(void *opaque)
struct qemu_paiocb *acb, **pacb;
int ret;
int result = 0;
+ int async_context_id = get_async_context_id();
for(;;) {
pacb = &s->first_aio;
@@ -426,6 +429,13 @@ static int posix_aio_process_queue(void *opaque)
acb = *pacb;
if (!acb)
return result;
+
+ /* we're only interested in requests in the right context */
+ if (acb->async_context_id != async_context_id) {
+ pacb = &acb->next;
+ continue;
+ }
+
ret = qemu_paio_error(acb);
if (ret == ECANCELED) {
/* remove the request */
@@ -558,6 +568,8 @@ BlockDriverAIOCB *paio_submit(BlockDriverState *bs, void *aio_ctx, int fd,
acb->aio_type = type;
acb->aio_fildes = fd;
acb->ev_signo = SIGUSR2;
+ acb->async_context_id = get_async_context_id();
+
if (qiov) {
acb->aio_iov = qiov->iov;
acb->aio_niov = qiov->niov;