On 14/11/2021 21:02, Christophe JAILLET wrote:
> The 'inuse' bitmap is local to this function. So we can use the
> non-atomic '__set_bit()' to save a few cycles.
>
> While at it, also remove some useless {}.
>
> Signed-off-by: Christophe JAILLET <[email protected]>
> ---
> net/bridge/br_if.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
> index c1183fef1f21..64b2d4fb50f5 100644
> --- a/net/bridge/br_if.c
> +++ b/net/bridge/br_if.c
> @@ -397,10 +397,10 @@ static int find_portno(struct net_bridge *br)
> if (!inuse)
> return -ENOMEM;
>
> - set_bit(0, inuse); /* zero is reserved */
> - list_for_each_entry(p, &br->port_list, list) {
> - set_bit(p->port_no, inuse);
> - }
> + __set_bit(0, inuse); /* zero is reserved */
> + list_for_each_entry(p, &br->port_list, list)
> + __set_bit(p->port_no, inuse);
> +
> index = find_first_zero_bit(inuse, BR_MAX_PORTS);
> bitmap_free(inuse);
>
>
This should be targeted at net-next.
The patch itself looks ok, TBH it's a slow path so speed
doesn't really matter but it's a straight-forward change.
Acked-by: Nikolay Aleksandrov <[email protected]>
