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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-15 15:20:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-15 15:20:53 +0100 |
| commit | bdfe0df1e97beedc15f68ee6556830548e81f63f (patch) | |
| tree | ed4f0eb7acb8814642eb1fb4da0ac28704dc4fe0 /mm/page_alloc.c | |
| parent | a4723041857eaa35f189d237da769c4c63235544 (diff) | |
| parent | 1c7fc5cbc33980acd13d668f1c8f0313d6ae9fd8 (diff) | |
Merge 5.0-rc2 into driver-core-next
We want the driver core changes in that branch in here to build on top
of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index cde5dac6229a..d295c9bc01a8 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2214,7 +2214,7 @@ static void steal_suitable_fallback(struct zone *zone, struct page *page, */ boost_watermark(zone); if (alloc_flags & ALLOC_KSWAPD) - wakeup_kswapd(zone, 0, 0, zone_idx(zone)); + set_bit(ZONE_BOOSTED_WATERMARK, &zone->flags); /* We are not allowed to try stealing from the whole block */ if (!whole_block) @@ -3102,6 +3102,12 @@ struct page *rmqueue(struct zone *preferred_zone, local_irq_restore(flags); out: + /* Separate test+clear to avoid unnecessary atomics */ + if (test_bit(ZONE_BOOSTED_WATERMARK, &zone->flags)) { + clear_bit(ZONE_BOOSTED_WATERMARK, &zone->flags); + wakeup_kswapd(zone, 0, 0, zone_idx(zone)); + } + VM_BUG_ON_PAGE(page && bad_range(zone, page), page); return page; |