Messages in this thread |  | | Date | Thu, 29 Sep 2011 09:02:36 +0800 | | Subject | Re: [PATCH] vmscan: add barrier to prevent evictable page in unevictable list | | From | Lin Ming <> |
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On Thu, Sep 29, 2011 at 2:05 AM, Minchan Kim <minchan.kim@gmail.com> wrote: > On Wed, Sep 28, 2011 at 11:04:05PM +0800, Lin Ming wrote: >> On Wed, Sep 28, 2011 at 9:45 AM, Minchan Kim <minchan.kim@gmail.com> wrote: >> > When racing between putback_lru_page and shmem_unlock happens, >> >> s/shmem_unlock/shmem_lock/ > > I did it intentionally for represent shmem_lock with user = 1, lock = 0. > If you think it makes others confusing, I will change in next version. > Thanks.
I was confused. Now I understand.
> >> >> > progrom execution order is as follows, but clear_bit in processor #1 >> > could be reordered right before spin_unlock of processor #1. >> > Then, the page would be stranded on the unevictable list. > > -- > Kind regards, > Minchan Kim
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