Theodore,
May you provide more details about discussion and new interface?
someone from mm think we need to implement mark_acccessed_force() with avoiding is in LRU checks?
and move single page directly without waiting a LRU drain ?
On Apr 21, 2013, at 02:57, Theodore Ts'o wrote:
> On Sat, Apr 20, 2013 at 11:18:17PM +0200, Bernd Schubert wrote:
>> Alex, Andrew,
>>
>> did you notice the patch Ted just sent?
>> ("ext4: mark all metadata I/O with REQ_META")
>
> This patch was sent to fix another issue that was brought up at Linux
> Storage, Filesystem, and MM workshop. I did bring up this issue with
> Mel Gorman while at LSF/MM, and as a result, tThe mm folks are going
> to look into making mark_page_accessed() do the right thing, or
> perhaps provide us with new interface. The problem with forcing the
> page to be marked as activated is this would cause a TLB flush, which
> would be pointless since this these buddy bitmap pages aren't actually
> mapped in anywhere.
>
> - Ted
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