[Virtio-fs] [PATCH 2/5] virtiofsd: take lo->mutex around lo_add_dirp_mapping()

[Dr. David Alan Gilbert]

* Stefan Hajnoczi (stefanha at redhat.com) wrote:
> The lo_add_dirp_mapping() function assumes lo->mutex is held, so we
> should acquire it.
> 
> Signed-off-by: Stefan Hajnoczi <stefanha at redhat.com>

Squashed into:
passthrough_ll: add dirp_map to hide lo_dirp pointers
> ---
>  contrib/virtiofsd/passthrough_ll.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/contrib/virtiofsd/passthrough_ll.c b/contrib/virtiofsd/passthrough_ll.c
> index 417a104218..e1d729d26b 100644
> --- a/contrib/virtiofsd/passthrough_ll.c
> +++ b/contrib/virtiofsd/passthrough_ll.c
> @@ -1357,7 +1357,9 @@ static void lo_opendir(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi
>  
>  	g_atomic_int_set(&d->refcount, 1); /* paired with lo_releasedir() */
>  
> +	pthread_mutex_lock(&lo->mutex);
>  	fh = lo_add_dirp_mapping(req, d);
> +	pthread_mutex_unlock(&lo->mutex);
>  	if (fh == -1)
>  		goto out_err;
>  
> -- 
> 2.21.0
> 
--
Dr. David Alan Gilbert / dgilbert at redhat.com / Manchester, UK