From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Kleikamp Subject: [PATCH V8 16/33] bio: add bvec_length(), like iov_length() Date: Thu, 25 Jul 2013 12:50:42 -0500 Message-ID: <1374774659-13121-17-git-send-email-dave.kleikamp@oracle.com> References: <1374774659-13121-1-git-send-email-dave.kleikamp@oracle.com> Cc: linux-fsdevel@vger.kernel.org, Andrew Morton , "Maxim V. Patlasov" , Zach Brown , Dave Kleikamp To: linux-kernel@vger.kernel.org Return-path: In-Reply-To: <1374774659-13121-1-git-send-email-dave.kleikamp@oracle.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org 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 ec48bac..4fd5253 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -307,6 +307,14 @@ extern struct bio_vec *bvec_alloc(gfp_t, int, unsigned long *, mempool_t *); extern void bvec_free(mempool_t *, 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; +} + #ifdef CONFIG_BLK_CGROUP int bio_associate_current(struct bio *bio); void bio_disassociate_task(struct bio *bio); -- 1.8.3.4