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
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