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Date: Mon, 16 Dec 2013 21:19:30 +0100 From: Oleg Nesterov <oleg@...hat.com> To: Andrea Arcangeli <aarcange@...hat.com>, Andrew Morton <akpm@...ux-foundation.org> Cc: Thomas Gleixner <tglx@...utronix.de>, Linus Torvalds <torvalds@...ux-foundation.org>, Dave Jones <davej@...hat.com>, Darren Hart <dvhart@...ux.intel.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Peter Zijlstra <peterz@...radead.org>, Mel Gorman <mgorman@...e.de> Subject: [PATCH -mm 1/2] mm: thp: __get_page_tail_foll() can use get_huge_page_tail() Cleanup. Change __get_page_tail_foll() to use get_huge_page_tail() to avoid the code duplication. Signed-off-by: Oleg Nesterov <oleg@...hat.com> --- mm/internal.h | 5 +---- 1 files changed, 1 insertions(+), 4 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index a85a3ab..a346ba1 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -47,12 +47,9 @@ static inline void __get_page_tail_foll(struct page *page, * page_cache_get_speculative()) on tail pages. */ VM_BUG_ON(atomic_read(&page->first_page->_count) <= 0); - VM_BUG_ON(atomic_read(&page->_count) != 0); - VM_BUG_ON(page_mapcount(page) < 0); if (get_page_head) atomic_inc(&page->first_page->_count); - if (compound_tail_refcounted(page->first_page)) - atomic_inc(&page->_mapcount); + get_huge_page_tail(page); } /* -- 1.5.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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