53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
Subject: mm-vmstat-fix-the-irq-lock-asymetry.patch
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Wed, 22 Jun 2011 20:47:08 +0200
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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mm/vmscan.c | 18 +++++++++---------
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1 file changed, 9 insertions(+), 9 deletions(-)
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Index: linux-3.2/mm/vmscan.c
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===================================================================
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--- linux-3.2.orig/mm/vmscan.c
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+++ linux-3.2/mm/vmscan.c
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@@ -1344,8 +1344,8 @@ static int too_many_isolated(struct zone
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*/
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static noinline_for_stack void
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putback_lru_pages(struct zone *zone, struct scan_control *sc,
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- unsigned long nr_anon, unsigned long nr_file,
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- struct list_head *page_list)
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+ unsigned long nr_anon, unsigned long nr_file,
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+ struct list_head *page_list, unsigned long nr_reclaimed)
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{
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struct page *page;
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struct pagevec pvec;
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@@ -1356,7 +1356,12 @@ putback_lru_pages(struct zone *zone, str
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/*
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* Put back any unfreeable pages.
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*/
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- spin_lock(&zone->lru_lock);
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+ spin_lock_irq(&zone->lru_lock);
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+
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+ if (current_is_kswapd())
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+ __count_vm_events(KSWAPD_STEAL, nr_reclaimed);
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+ __count_zone_vm_events(PGSTEAL, zone, nr_reclaimed);
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+
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while (!list_empty(page_list)) {
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int lru;
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page = lru_to_page(page_list);
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@@ -1539,12 +1544,7 @@ shrink_inactive_list(unsigned long nr_to
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priority, &nr_dirty, &nr_writeback);
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}
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- local_irq_disable();
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- if (current_is_kswapd())
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- __count_vm_events(KSWAPD_STEAL, nr_reclaimed);
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- __count_zone_vm_events(PGSTEAL, zone, nr_reclaimed);
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-
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- putback_lru_pages(zone, sc, nr_anon, nr_file, &page_list);
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+ putback_lru_pages(zone, sc, nr_anon, nr_file, &page_list, nr_reclaimed);
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/*
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* If reclaim is isolating dirty pages under writeback, it implies
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