[Virtio-fs] [PATCH][RFC] viriofsd: do not fall back to buffer io when cache=auto

[piaojun]

Ping, any comments on this patch?

On 2019/8/14 17:46, piaojun wrote:
> Direct io flags will be tured off even if cache=auto, which seems a
> little bit strange. It's better to keep the open flags set by user. If
> I missed the discussion about this issue, please let me know, thanks.
> 
> Signed-off-by: Jun Piao <piaojun at huawei.com>
> ---
>  contrib/virtiofsd/passthrough_ll.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/contrib/virtiofsd/passthrough_ll.c b/contrib/virtiofsd/passthrough_ll.c
> index 321bbb2..a080f0d 100644
> --- a/contrib/virtiofsd/passthrough_ll.c
> +++ b/contrib/virtiofsd/passthrough_ll.c
> @@ -1687,6 +1687,8 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
>  		fi->direct_io = 1;
>  	else if (lo->cache == CACHE_ALWAYS)
>  		fi->keep_cache = 1;
> +	else
> +		fi->direct_io = !!(fi->flags & O_DIRECT);
> 
>  out:
>  	lo_inode_put(lo, &parent_inode);
> @@ -1899,6 +1901,8 @@ static void lo_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
>  		fi->direct_io = 1;
>  	else if (lo->cache == CACHE_ALWAYS)
>  		fi->keep_cache = 1;
> +	else
> +		fi->direct_io = !!(fi->flags & O_DIRECT);
>  	fuse_reply_open(req, fi);
>  }
>