Mon, Mar 01, 2021 at 02:08:17PM -0800, Hugh Dickins wrote:
> On Sun, 28 Feb 2021, Roman Gushchin wrote:
> > On Thu, Feb 25, 2021 at 03:14:03PM -0800, Hugh Dickins wrote:
> > > vmstat_refresh() can occasionally catch nr_zone_write_pending and
> > > nr_writeback when they are transiently negative.
On Sun, 28 Feb 2021, Roman Gushchin wrote:
> On Thu, Feb 25, 2021 at 03:14:03PM -0800, Hugh Dickins wrote:
> > vmstat_refresh() can occasionally catch nr_zone_write_pending and
> > nr_writeback when they are transiently negative. The reason is partly
> > that the interrupt which decrements them
On Thu, Feb 25, 2021 at 03:14:03PM -0800, Hugh Dickins wrote:
> vmstat_refresh() can occasionally catch nr_zone_write_pending and
> nr_writeback when they are transiently negative. The reason is partly
> that the interrupt which decrements them in test_clear_page_writeback()
> can come in before
vmstat_refresh() can occasionally catch nr_zone_write_pending and
nr_writeback when they are transiently negative. The reason is partly
that the interrupt which decrements them in test_clear_page_writeback()
can come in before __test_set_page_writeback() got to increment them;
but transient
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