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writeback: do uninterruptible sleep in balance_dirty_pages()
[firefly-linux-kernel-4.4.55.git]
/
mm
/
vmscan.c
diff --git
a/mm/vmscan.c
b/mm/vmscan.c
index d31d7ce52c0ea2dbbf85b26019c9fdd70fab624a..9ca587c692748adbc715b440ff5aa8c89357c511 100644
(file)
--- a/
mm/vmscan.c
+++ b/
mm/vmscan.c
@@
-494,9
+494,16
@@
static int __remove_mapping(struct address_space *mapping, struct page *page)
spin_unlock_irq(&mapping->tree_lock);
swapcache_free(swap, page);
} else {
spin_unlock_irq(&mapping->tree_lock);
swapcache_free(swap, page);
} else {
+ void (*freepage)(struct page *);
+
+ freepage = mapping->a_ops->freepage;
+
__remove_from_page_cache(page);
spin_unlock_irq(&mapping->tree_lock);
mem_cgroup_uncharge_cache_page(page);
__remove_from_page_cache(page);
spin_unlock_irq(&mapping->tree_lock);
mem_cgroup_uncharge_cache_page(page);
+
+ if (freepage != NULL)
+ freepage(page);
}
return 1;
}
return 1;