From 6cc869454858f55087b627c0e48cea9df375b7e8 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Wed, 22 Apr 2015 13:47:35 -0700 Subject: don't use spin_lock_irqsave() unnecessarily Signed-off-by: Kent Overstreet --- mm/page-writeback.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index f4cd7d8005c9..76c944af8f18 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2507,20 +2507,19 @@ int __set_page_dirty_nobuffers(struct page *page) lock_page_memcg(page); if (!TestSetPageDirty(page)) { struct address_space *mapping = page_mapping(page); - unsigned long flags; if (!mapping) { unlock_page_memcg(page); return 1; } - spin_lock_irqsave(&mapping->tree_lock, flags); + spin_lock_irq(&mapping->tree_lock); BUG_ON(page_mapping(page) != mapping); WARN_ON_ONCE(!PagePrivate(page) && !PageUptodate(page)); account_page_dirtied(page, mapping); radix_tree_tag_set(&mapping->page_tree, page_index(page), PAGECACHE_TAG_DIRTY); - spin_unlock_irqrestore(&mapping->tree_lock, flags); + spin_unlock_irq(&mapping->tree_lock); unlock_page_memcg(page); if (mapping->host) { -- cgit v1.2.3