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| author |   Oleg Nesterov <oleg@redhat.com> | 2014-01-21 15:49:02 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-21 16:19:43 -0800 |
| commit | c728852f5dd41ce34e7ce0a179cf28cd5f4dc301 (patch) | |
| tree | 31b5ad2a079ad30901377c95d50cf62ef85f8ddf | |
| parent | mm/hugetlb.c: defer PageHeadHuge() symbol export (diff) | |
| download | linux-dev-c728852f5dd41ce34e7ce0a179cf28cd5f4dc301.tar.xz linux-dev-c728852f5dd41ce34e7ce0a179cf28cd5f4dc301.zip | |
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@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Jones <davej@redhat.com>
Cc: Darren Hart <dvhart@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/internal.h | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/mm/internal.h b/mm/internal.h index a85a3ab1f7ef..a346ba120e42 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); } /* |