On 01/24/18 22:20 +0200, Michael S. Tsirkin wrote:
> > index 50385e3f81..dd5876471f 100644
> > --- a/include/qemu/mmap-alloc.h
> > +++ b/include/qemu/mmap-alloc.h
> > @@ -7,7 +7,8 @@ size_t qemu_fd_getpagesize(int fd);
> >
> > size_t qemu_mempath_getpagesize(const char *mem_path);
> >
> > -voi
> index 50385e3f81..dd5876471f 100644
> --- a/include/qemu/mmap-alloc.h
> +++ b/include/qemu/mmap-alloc.h
> @@ -7,7 +7,8 @@ size_t qemu_fd_getpagesize(int fd);
>
> size_t qemu_mempath_getpagesize(const char *mem_path);
>
> -void *qemu_ram_mmap(int fd, size_t size, size_t align, bool shared);
>
When a file supporting DAX is used as vNVDIMM backend, mmap it with
MAP_SYNC flag in addition can guarantee the persistence of guest write
to the backend file without other QEMU actions (e.g., periodic fsync()
by QEMU).
A OnOffAuto parameter 'sync' is added to qemu_ram_mmap():
- If sync == ON_OFF
