Commit 5adc7b51 authored Mar 22, 2011 by Minchan Kim Committed by Linus Torvalds Mar 22, 2011

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 <minchan.kim@gmail.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 4c73b1bc

mm/truncate.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -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;
		}

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