Re: [PATCH 1/6] Adjust maximum MSIZE to account for p9 header

[Christian Schoenebeck <linux_oss@xxxxxxxxxxxxx>]

On Saturday, December 17, 2022 7:52:05 PM CET Eric Van Hensbergen wrote:
> Add maximum p9 header size to MSIZE to make sure we can
> have page aligned data.
> 
> Signed-off-by: Eric Van Hensbergen <evanhensbergen@xxxxxxxxxx>
> ---
>  net/9p/client.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/9p/client.c b/net/9p/client.c
> index fef6516a0639..416baf2f1edf 100644
> --- a/net/9p/client.c
> +++ b/net/9p/client.c
> @@ -28,7 +28,7 @@
>  #define CREATE_TRACE_POINTS
>  #include <trace/events/9p.h>
>  
> -#define DEFAULT_MSIZE (128 * 1024)
> +#define DEFAULT_MSIZE ((128 * 1024) + P9_HDRSZ)

Adding 7 would make what page aligned exactly, the payload? And how?

>  
>  /* Client Option Parsing (code inspired by NFS code)
>   *  - a little lazy - parse all client options
>