On Fri, Mar 03, 2017 at 06:24:06PM +0530, Anshuman Khandual wrote:
> On 03/02/2017 12:09 PM, Minchan Kim wrote:
> > In 2002, [1] introduced SWAP_AGAIN.
> > At that time, ttuo used spin_trylock(>page_table_lock) so it's
>
> Small nit: Please expand "ttuo" here. TTU in the first place is also
> not
On Fri, Mar 03, 2017 at 06:24:06PM +0530, Anshuman Khandual wrote:
> On 03/02/2017 12:09 PM, Minchan Kim wrote:
> > In 2002, [1] introduced SWAP_AGAIN.
> > At that time, ttuo used spin_trylock(>page_table_lock) so it's
>
> Small nit: Please expand "ttuo" here. TTU in the first place is also
> not
On 03/02/2017 12:09 PM, Minchan Kim wrote:
> In 2002, [1] introduced SWAP_AGAIN.
> At that time, ttuo used spin_trylock(>page_table_lock) so it's
Small nit: Please expand "ttuo" here. TTU in the first place is also
not very clear but we have that in many places.
> really easy to contend and fail
On 03/02/2017 12:09 PM, Minchan Kim wrote:
> In 2002, [1] introduced SWAP_AGAIN.
> At that time, ttuo used spin_trylock(>page_table_lock) so it's
Small nit: Please expand "ttuo" here. TTU in the first place is also
not very clear but we have that in many places.
> really easy to contend and fail
In 2002, [1] introduced SWAP_AGAIN.
At that time, ttuo used spin_trylock(>page_table_lock) so it's
really easy to contend and fail to hold a lock so SWAP_AGAIN to keep
LRU status makes sense.
However, now we changed it to mutex-based lock and be able to block
without skip pte so there is a few of
In 2002, [1] introduced SWAP_AGAIN.
At that time, ttuo used spin_trylock(>page_table_lock) so it's
really easy to contend and fail to hold a lock so SWAP_AGAIN to keep
LRU status makes sense.
However, now we changed it to mutex-based lock and be able to block
without skip pte so there is a few of
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