diff options
Diffstat (limited to 'nbd.c')
-rw-r--r-- | nbd.c | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -929,6 +929,34 @@ static void nbd_request_put(NBDRequest *req) nbd_client_put(client); } +static void bs_aio_attached(AioContext *ctx, void *opaque) +{ + NBDExport *exp = opaque; + NBDClient *client; + + TRACE("Export %s: Attaching clients to AIO context %p\n", exp->name, ctx); + + exp->ctx = ctx; + + QTAILQ_FOREACH(client, &exp->clients, next) { + nbd_set_handlers(client); + } +} + +static void bs_aio_detach(void *opaque) +{ + NBDExport *exp = opaque; + NBDClient *client; + + TRACE("Export %s: Detaching clients from AIO context %p\n", exp->name, exp->ctx); + + QTAILQ_FOREACH(client, &exp->clients, next) { + nbd_unset_handlers(client); + } + + exp->ctx = NULL; +} + NBDExport *nbd_export_new(BlockDriverState *bs, off_t dev_offset, off_t size, uint32_t nbdflags, void (*close)(NBDExport *)) @@ -943,6 +971,7 @@ NBDExport *nbd_export_new(BlockDriverState *bs, off_t dev_offset, exp->close = close; exp->ctx = bdrv_get_aio_context(bs); bdrv_ref(bs); + bdrv_add_aio_context_notifier(bs, bs_aio_attached, bs_aio_detach, exp); return exp; } @@ -990,6 +1019,8 @@ void nbd_export_close(NBDExport *exp) nbd_export_set_name(exp, NULL); nbd_export_put(exp); if (exp->bs) { + bdrv_remove_aio_context_notifier(exp->bs, bs_aio_attached, + bs_aio_detach, exp); bdrv_unref(exp->bs); exp->bs = NULL; } |