[CRIU] [PATCH v2] filemap: collect mapped file fs type

[Andrew Vagin]

On Thu, Jul 28, 2016 at 12:06:41PM +0300, Stanislav Kinsburskiy wrote:
> This is essential to define whether this file is located on NFS (and thus has
> to be "link-remapped") or not (see nfs_silly_renamed).
> 
> v2:
> Compilation issue fixed
> 
> Signed-off-by: Stanislav Kinsburskiy <skinsbursky at virtuozzo.com>
> ---
>  criu/cr-dump.c |    8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/criu/cr-dump.c b/criu/cr-dump.c
> index 06ff2d7..2288908 100644
> --- a/criu/cr-dump.c
> +++ b/criu/cr-dump.c
> @@ -365,12 +365,20 @@ static int dump_filemap(struct vma_area *vma_area, int fd)
>  	struct fd_parms p = FD_PARMS_INIT;
>  	VmaEntry *vma = vma_area->e;
>  	int ret = 0;
> +	struct statfs fst;
>  	u32 id;
>  
>  	BUG_ON(!vma_area->vmst);
>  	p.stat = *vma_area->vmst;
>  	p.mnt_id = vma_area->mnt_id;
>  
> +	if (fstatfs(fd, &fst)) {
> +		pr_perror("Unable to statfs fd %d", fd);
> +		return -1;
> +	}
> +
> +	p.fs_type = fst.f_type;

Can we get fs_type in handle_vma()? We get vmst and mnt_id there.

> +
>  	/*
>  	 * AUFS support to compensate for the kernel bug
>  	 * exposing branch pathnames in map_files.
> 
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