X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fbuffer.c;h=27265a8b43c1661f85d02b6fb931e8311ea7fe02;hb=82c68b6ccd54117a87cb2d9b91c2ee6e1280cf9d;hp=651dba10b9c2b5468af528ad3114166b90d8c067;hpb=da89486f03ec5996d87b62d1a26c19e9c5cddf12;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/buffer.c b/fs/buffer.c
index 651dba10b9c2..27265a8b43c1 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -654,14 +654,16 @@ EXPORT_SYMBOL(mark_buffer_dirty_inode);
 static void __set_page_dirty(struct page *page,
 		struct address_space *mapping, int warn)
 {
-	spin_lock_irq(&mapping->tree_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&mapping->tree_lock, flags);
 	if (page->mapping) {	/* Race with truncate? */
 		WARN_ON_ONCE(warn && !PageUptodate(page));
 		account_page_dirtied(page, mapping);
 		radix_tree_tag_set(&mapping->page_tree,
 				page_index(page), PAGECACHE_TAG_DIRTY);
 	}
-	spin_unlock_irq(&mapping->tree_lock);
+	spin_unlock_irqrestore(&mapping->tree_lock, flags);
 	__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
 }