Re: [RFC PATCH] nfs: reduce stack usage of nfs_get_root

[Benjamin Coddington]

On 26 Sep 2023, at 20:16, Nicholas Piggin wrote:

> Move fsinfo allocation off stack, reducing stack overhead of
> nfs_get_root from 304 to 192 bytes.
>
> Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx>
> ---
> Hi,
>
> This is motivated by a stack overflow described here:
> https://lore.kernel.org/netdev/20230927001308.749910-1-npiggin@xxxxxxxxx/
>
> NFS is not really a major culprit but it seems not too hard to
> shrink the stack a little.
>
> Thanks,
> Nick

Looks good, might be able to get rid of the local "root" var too if the
compiler doesn't optimize it away.

Reviewed-by: Benjamin Coddington <bcodding@xxxxxxxxxx>

Ben