Re: [PATCH] vmscan: add barrier to prevent evictable page in unevictable list

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Sep 29, 2011 at 2:05 AM, Minchan Kim <minchan.kim@xxxxxxxxx> 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@xxxxxxxxx> 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

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>


[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]