From patchwork Thu Sep 5 15:06:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goldwyn Rodrigues X-Patchwork-Id: 11133369 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A134714ED for ; Thu, 5 Sep 2019 15:07:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF3CC2082E for ; Thu, 5 Sep 2019 15:07:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390324AbfIEPHW (ORCPT ); Thu, 5 Sep 2019 11:07:22 -0400 Received: from mx2.suse.de ([195.135.220.15]:56798 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2390307AbfIEPHT (ORCPT ); Thu, 5 Sep 2019 11:07:19 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id EA729B678; Thu, 5 Sep 2019 15:07:17 +0000 (UTC) From: Goldwyn Rodrigues To: linux-fsdevel@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, darrick.wong@oracle.com, hch@lst.de, linux-xfs@vger.kernel.org, Goldwyn Rodrigues Subject: [PATCH 11/15] iomap: use a function pointer for dio submits Date: Thu, 5 Sep 2019 10:06:46 -0500 Message-Id: <20190905150650.21089-12-rgoldwyn@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190905150650.21089-1-rgoldwyn@suse.de> References: <20190905150650.21089-1-rgoldwyn@suse.de> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Goldwyn Rodrigues This helps filesystems to perform tasks on the bio while submitting for I/O. This could be post-write operations such as data CRC or data replication for fs-handled RAID. Signed-off-by: Goldwyn Rodrigues --- fs/iomap/direct-io.c | 16 +++++++++++----- include/linux/iomap.h | 2 ++ 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index e3ccbf7daaae..2923b02c1d57 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -59,7 +59,7 @@ int iomap_dio_iopoll(struct kiocb *kiocb, bool spin) EXPORT_SYMBOL_GPL(iomap_dio_iopoll); static void iomap_dio_submit_bio(struct iomap_dio *dio, struct iomap *iomap, - struct bio *bio) + struct bio *bio, loff_t pos) { atomic_inc(&dio->ref); @@ -67,7 +67,13 @@ static void iomap_dio_submit_bio(struct iomap_dio *dio, struct iomap *iomap, bio_set_polled(bio, dio->iocb); dio->submit.last_queue = bdev_get_queue(iomap->bdev); - dio->submit.cookie = submit_bio(bio); + if (dio->dops && dio->dops->submit_io) { + dio->dops->submit_io(bio, file_inode(dio->iocb->ki_filp), + pos); + dio->submit.cookie = BLK_QC_T_NONE; + } else { + dio->submit.cookie = submit_bio(bio); + } } static ssize_t iomap_dio_complete(struct iomap_dio *dio) @@ -191,7 +197,7 @@ iomap_dio_zero(struct iomap_dio *dio, struct iomap *iomap, loff_t pos, get_page(page); __bio_add_page(bio, page, len, 0); bio_set_op_attrs(bio, REQ_OP_WRITE, flags); - iomap_dio_submit_bio(dio, iomap, bio); + iomap_dio_submit_bio(dio, iomap, bio, pos); } static loff_t @@ -297,11 +303,11 @@ iomap_dio_bio_actor(struct inode *inode, loff_t pos, loff_t length, iov_iter_advance(dio->submit.iter, n); dio->size += n; - pos += n; copied += n; nr_pages = iov_iter_npages(&iter, BIO_MAX_PAGES); - iomap_dio_submit_bio(dio, iomap, bio); + iomap_dio_submit_bio(dio, iomap, bio, pos); + pos += n; } while (nr_pages); /* diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 7fdb09925740..1bcb2f14bd9a 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -196,6 +196,8 @@ sector_t iomap_bmap(struct address_space *mapping, sector_t bno, struct iomap_dio_ops { int (*end_io)(struct kiocb *iocb, ssize_t size, int error, unsigned flags); + void (*submit_io)(struct bio *bio, struct inode *inode, + loff_t file_offset); }; ssize_t iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,