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>
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@ -106,9 +106,8 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
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cancel_dirty_page(page, PAGE_CACHE_SIZE);
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cancel_dirty_page(page, PAGE_CACHE_SIZE);
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clear_page_mlock(page);
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clear_page_mlock(page);
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remove_from_page_cache(page);
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ClearPageMappedToDisk(page);
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ClearPageMappedToDisk(page);
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page_cache_release(page); /* pagecache ref */
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delete_from_page_cache(page);
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return 0;
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return 0;
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}
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}
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