Re: [PATCH] shm: optimize exit_shm()

[Oleg Nesterov]

On 08/03, Vasiliy Kulikov wrote:
>
> As .in_use may be changed to zero while current
> process was sleeping in down_write(),

Yes,

> we should check .in_use once again after
> down_write().

Why?

It doesn't hurt to recheck and I think the patch is correct.
But the changelog looks confusing.

Oleg.

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