mm: truncate: change remove_from_page_cache

This patch series changes remove_from_page_cache()'s page ref counting
rule.  Page cache ref count is decreased in delete_from_page_cache().  So
we don't need to decrease the page reference in callers.

Signed-off-by: Minchan Kim <[email protected]>
Cc: Dan Magenheimer <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Al Viro <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Reviewed-by: KAMEZAWA Hiroyuki <[email protected]>
Reviewed-by: Johannes Weiner <[email protected]>
Reviewed-by: KOSAKI Motohiro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

1 files changed, 1 insertions, 2 deletions

diff --git a/mm/truncate.c b/mm/truncate.c
index d64296be00d3..7c617b5f03ee 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -106,9 +106,8 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
 	cancel_dirty_page(page, PAGE_CACHE_SIZE);
 
 	clear_page_mlock(page);
-	remove_from_page_cache(page);
 	ClearPageMappedToDisk(page);
-	page_cache_release(page);	/* pagecache ref */
+	delete_from_page_cache(page);
 	return 0;
 }