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Date: Mon, 23 Sep 2013 15:05:37 +0300 From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> To: Andrea Arcangeli <aarcange@...hat.com>, Andrew Morton <akpm@...ux-foundation.org> Cc: Al Viro <viro@...iv.linux.org.uk>, Hugh Dickins <hughd@...gle.com>, Wu Fengguang <fengguang.wu@...el.com>, Jan Kara <jack@...e.cz>, Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org, Andi Kleen <ak@...ux.intel.com>, Matthew Wilcox <willy@...ux.intel.com>, "Kirill A. Shutemov" <kirill@...temov.name>, Hillf Danton <dhillf@...il.com>, Dave Hansen <dave@...1.net>, Ning Qu <quning@...gle.com>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> Subject: [PATCHv6 09/22] block: implement add_bdi_stat() We're going to add/remove a number of page cache entries at once. This patch implements add_bdi_stat() which adjusts bdi stats by arbitrary amount. It's required for batched page cache manipulations. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com> Reviewed-by: Jan Kara <jack@...e.cz> --- include/linux/backing-dev.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 5f66d519a7..39acfa974b 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -166,6 +166,16 @@ static inline void __dec_bdi_stat(struct backing_dev_info *bdi, __add_bdi_stat(bdi, item, -1); } +static inline void add_bdi_stat(struct backing_dev_info *bdi, + enum bdi_stat_item item, s64 amount) +{ + unsigned long flags; + + local_irq_save(flags); + __add_bdi_stat(bdi, item, amount); + local_irq_restore(flags); +} + static inline void dec_bdi_stat(struct backing_dev_info *bdi, enum bdi_stat_item item) { -- 1.8.4.rc3 -- 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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