From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Kleikamp Subject: [RFC PATCH v2 14/21] bio: add bvec_length(), like iov_length() Date: Fri, 30 Mar 2012 10:43:41 -0500 Message-ID: <1333122228-13633-15-git-send-email-dave.kleikamp@oracle.com> References: <1333122228-13633-1-git-send-email-dave.kleikamp@oracle.com> Cc: linux-kernel@vger.kernel.org, Zach Brown , Dave Kleikamp To: linux-fsdevel@vger.kernel.org Return-path: Received: from rcsinet15.oracle.com ([148.87.113.117]:46948 "EHLO rcsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933839Ab2C3Poa (ORCPT ); Fri, 30 Mar 2012 11:44:30 -0400 In-Reply-To: <1333122228-13633-1-git-send-email-dave.kleikamp@oracle.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: From: Zach Brown Signed-off-by: Dave Kleikamp Cc: Zach Brown --- include/linux/bio.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/bio.h b/include/linux/bio.h index 129a9c0..913087d 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -268,6 +268,14 @@ extern struct bio_vec *bvec_alloc_bs(gfp_t, int, unsigned long *, struct bio_set extern void bvec_free_bs(struct bio_set *, struct bio_vec *, unsigned int); extern unsigned int bvec_nr_vecs(unsigned short idx); +static inline ssize_t bvec_length(const struct bio_vec *bvec, unsigned long nr) +{ + ssize_t bytes = 0; + while (nr--) + bytes += (bvec++)->bv_len; + return bytes; +} + /* * bio_set is used to allow other portions of the IO system to * allocate their own private memory pools for bio and iovec structures. -- 1.7.9.5