Re: [PATCH] mm: further fix swapin race condition

[Rik van Riel]

On 09/19/2010 10:40 PM, Hugh Dickins wrote:
> Commit 4969c1192d15afa3389e7ae3302096ff684ba655 "mm: fix swapin race condition"
> is now agreed to be incomplete.  There's a race, not very much less likely
> than the original race envisaged, in which it is further necessary to check
> that the swapcache page's swap has not changed.

> B ought to have checked that page1's swap was still swap1.
>
> Signed-off-by: Hugh Dickins<hughd@xxxxxxxxxx>
> Cc: stable@xxxxxxxxxx

Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>

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