From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934979Ab3BTAXI (ORCPT ); Tue, 19 Feb 2013 19:23:08 -0500 Received: from mail-pb0-f53.google.com ([209.85.160.53]:39393 "EHLO mail-pb0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934960Ab3BTAXD (ORCPT ); Tue, 19 Feb 2013 19:23:03 -0500 From: Kent Overstreet To: linux-kernel@vger.kernel.org Cc: Kent Overstreet , axboe@kernel.dk, Eric Moore , "James E.J. Bottomley" , linux-scsi@vger.kernel.org Subject: [PATCH 12/27] block: Remove some unnecessary bi_vcnt usage Date: Tue, 19 Feb 2013 16:22:26 -0800 Message-Id: <1361319761-23873-13-git-send-email-koverstreet@google.com> X-Mailer: git-send-email 1.7.12 In-Reply-To: <1361319761-23873-1-git-send-email-koverstreet@google.com> References: <1361319761-23873-1-git-send-email-koverstreet@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org More prep work for immutable bvecs/effecient bio splitting - usage of bi_vcnt has to be auditing, so getting rid of all the unnecessary usage makes that easier. Plus, bio_segments() is really what this code wanted, as it respects the current value of bi_idx. Signed-off-by: Kent Overstreet CC: Jens Axboe CC: Eric Moore CC: "James E.J. Bottomley" CC: linux-scsi@vger.kernel.org --- drivers/message/fusion/mptsas.c | 6 +++--- drivers/scsi/libsas/sas_expander.c | 6 +++--- drivers/scsi/mpt2sas/mpt2sas_transport.c | 10 +++++----- 3 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index fa43c39..2bb0154 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -2235,10 +2235,10 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, } /* do we need to support multiple segments? */ - if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) { + if (bio_segments(req->bio) > 1 || bio_segments(rsp->bio) > 1) { printk(MYIOC_s_ERR_FMT "%s: multiple segments req %u %u, rsp %u %u\n", - ioc->name, __func__, req->bio->bi_vcnt, blk_rq_bytes(req), - rsp->bio->bi_vcnt, blk_rq_bytes(rsp)); + ioc->name, __func__, bio_segments(req->bio), blk_rq_bytes(req), + bio_segments(rsp->bio), blk_rq_bytes(rsp)); return -EINVAL; } diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index aec2e0d..7af7767 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -2151,10 +2151,10 @@ int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, } /* do we need to support multiple segments? */ - if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) { + if (bio_segments(req->bio) > 1 || bio_segments(rsp->bio) > 1) { printk("%s: multiple segments req %u %u, rsp %u %u\n", - __func__, req->bio->bi_vcnt, blk_rq_bytes(req), - rsp->bio->bi_vcnt, blk_rq_bytes(rsp)); + __func__, bio_segments(req->bio), blk_rq_bytes(req), + bio_segments(rsp->bio), blk_rq_bytes(rsp)); return -EINVAL; } diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c index 8c2ffbe..193e7ae 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_transport.c +++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c @@ -1939,7 +1939,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, ioc->transport_cmds.status = MPT2_CMD_PENDING; /* Check if the request is split across multiple segments */ - if (req->bio->bi_vcnt > 1) { + if (bio_segments(req->bio) > 1) { u32 offset = 0; /* Allocate memory and copy the request */ @@ -1971,7 +1971,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, /* Check if the response needs to be populated across * multiple segments */ - if (rsp->bio->bi_vcnt > 1) { + if (bio_segments(rsp->bio) > 1) { pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp), &pci_dma_in); if (!pci_addr_in) { @@ -2038,7 +2038,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; - if (req->bio->bi_vcnt > 1) { + if (bio_segments(req->bio) > 1) { ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4), pci_dma_out); } else { @@ -2054,7 +2054,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; - if (rsp->bio->bi_vcnt > 1) { + if (bio_segments(rsp->bio) > 1) { ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4), pci_dma_in); } else { @@ -2099,7 +2099,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, le16_to_cpu(mpi_reply->ResponseDataLength); /* check if the resp needs to be copied from the allocated * pci mem */ - if (rsp->bio->bi_vcnt > 1) { + if (bio_segments(rsp->bio) > 1) { u32 offset = 0; u32 bytes_to_copy = le16_to_cpu(mpi_reply->ResponseDataLength); -- 1.7.12