netdev - Re: [PATCH] bpf: devmap: pass on return value of bpf_map_precharge

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Date:   Mon, 18 Sep 2017 16:53:57 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     tklauser@...tanz.ch
Cc:     ast@...nel.org, daniel@...earbox.net, john.fastabend@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH] bpf: devmap: pass on return value of
 bpf_map_precharge_memlock

From: Tobias Klauser <tklauser@...tanz.ch>
Date: Mon, 18 Sep 2017 15:03:46 +0200

> If bpf_map_precharge_memlock in dev_map_alloc, -ENOMEM is returned
> regardless of the actual error produced by bpf_map_precharge_memlock.
> Fix it by passing on the error returned by bpf_map_precharge_memlock.
> 
> Also return -EINVAL instead of -ENOMEM if the page count overflow check
> fails.
> 
> This makes dev_map_alloc match the behavior of other bpf maps' alloc
> functions wrt. return values.
> 
> Signed-off-by: Tobias Klauser <tklauser@...tanz.ch>

Applied, thank you.