On 6/21/19 4:07 PM, Bharath Vedartham wrote:
> Do you think this could cause a race condition between
> __setup_per_zone_wmarks and pgdat_watermark_boosted which checks whether
> the watermark_boost of each zone is non-zero? pgdat_watermark_boosted is
> not called with a zone lock.
> Here is a prob
On Fri, Jun 21, 2019 at 12:43:25PM +0100, Alan Jenkins wrote:
> When setting the low and high watermarks we use min_wmark_pages(zone).
> I guess this is to reduce the line length. But we forgot that this macro
> includes zone->watermark_boost. We need to reset zone->watermark_boost
> first. Othe
On Fri, Jun 21, 2019 at 02:09:31PM +0200, Vlastimil Babka wrote:
> On 6/21/19 1:43 PM, Alan Jenkins wrote:
> > When setting the low and high watermarks we use min_wmark_pages(zone).
> > I guess this is to reduce the line length. But we forgot that this macro
> > includes zone->watermark_boost. We
On 6/21/19 1:43 PM, Alan Jenkins wrote:
> When setting the low and high watermarks we use min_wmark_pages(zone).
> I guess this is to reduce the line length. But we forgot that this macro
> includes zone->watermark_boost. We need to reset zone->watermark_boost
> first. Otherwise the watermarks w
When setting the low and high watermarks we use min_wmark_pages(zone).
I guess this is to reduce the line length. But we forgot that this macro
includes zone->watermark_boost. We need to reset zone->watermark_boost
first. Otherwise the watermarks will be set inconsistently.
E.g. this could caus
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