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block/nfs: tear down aio before nfs_close

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nfs_close is a sync call from libnfs and has its own event
handler polling on the nfs FD. Avoid that both QEMU and libnfs
are intefering here.

CC: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Peter Lieven 2019-09-10 17:41:09 +02:00 committed by Kevin Wolf
parent d885ac33cf
commit 601dc65597
1 changed files with 4 additions and 2 deletions
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6
block/nfs.c
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@ -390,12 +390,14 @@ static void nfs_attach_aio_context(BlockDriverState *bs,
static void nfs_client_close(NFSClient *client)
{
if (client->context) {
qemu_mutex_lock(&client->mutex);
aio_set_fd_handler(client->aio_context, nfs_get_fd(client->context),
false, NULL, NULL, NULL, NULL);
qemu_mutex_unlock(&client->mutex);
if (client->fh) {
nfs_close(client->context, client->fh);
client->fh = NULL;
}
aio_set_fd_handler(client->aio_context, nfs_get_fd(client->context),
false, NULL, NULL, NULL, NULL);
nfs_destroy_context(client->context);
client->context = NULL;
}