Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031458AbbKDW3d (ORCPT ); Wed, 4 Nov 2015 17:29:33 -0500 Received: from mx1.redhat.com ([209.132.183.28]:34186 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030998AbbKDWIk (ORCPT ); Wed, 4 Nov 2015 17:08:40 -0500 From: mchristi@redhat.com To: linux-fsdevel@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, drbd-dev@lists.linbit.com Cc: Mike Christie Subject: [PATCH 05/32] drbd: prepare drbd for bi_rw split Date: Wed, 4 Nov 2015 16:08:02 -0600 Message-Id: <1446674909-5371-6-git-send-email-mchristi@redhat.com> In-Reply-To: <1446674909-5371-1-git-send-email-mchristi@redhat.com> References: <1446674909-5371-1-git-send-email-mchristi@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7676 Lines: 175 From: Mike Christie This patch prepares drbd's submit_bio use for the next patches that split bi_rw into a operation and flags field. Instead of passing in a bitmap with both the operation and flags mixed in, the callers will now pass them in seperately. This patch modifies the code related to the submit_bio calls so the flags and operation are seperated. When this is done for all code, one of the later patches in the series will modify the actual submit_bio call, so the patches are bisectable. Signed-off-by: Mike Christie --- drivers/block/drbd/drbd_actlog.c | 30 ++++++++++++++++-------------- drivers/block/drbd/drbd_bitmap.c | 4 ++-- drivers/block/drbd/drbd_int.h | 2 +- drivers/block/drbd/drbd_main.c | 5 +++-- 4 files changed, 22 insertions(+), 19 deletions(-) diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c index b3868e7..c290e8b 100644 --- a/drivers/block/drbd/drbd_actlog.c +++ b/drivers/block/drbd/drbd_actlog.c @@ -137,19 +137,19 @@ void wait_until_done_or_force_detached(struct drbd_device *device, struct drbd_b static int _drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bdev, - sector_t sector, int rw) + sector_t sector, int op) { struct bio *bio; /* we do all our meta data IO in aligned 4k blocks. */ const int size = 4096; - int err; + int err, op_flags = 0; device->md_io.done = 0; device->md_io.error = -ENODEV; - if ((rw & WRITE) && !test_bit(MD_NO_FUA, &device->flags)) - rw |= REQ_FUA | REQ_FLUSH; - rw |= REQ_SYNC | REQ_NOIDLE; + if ((op == REQ_OP_WRITE) && !test_bit(MD_NO_FUA, &device->flags)) + op_flags |= REQ_FUA | REQ_FLUSH; + op_flags |= REQ_SYNC | REQ_NOIDLE; bio = bio_alloc_drbd(GFP_NOIO); bio->bi_bdev = bdev->md_bdev; @@ -159,9 +159,9 @@ static int _drbd_md_sync_page_io(struct drbd_device *device, goto out; bio->bi_private = device; bio->bi_end_io = drbd_md_endio; - bio->bi_rw = rw; + bio->bi_rw = op | op_flags; - if (!(rw & WRITE) && device->state.disk == D_DISKLESS && device->ldev == NULL) + if (op != REQ_OP_WRITE && device->state.disk == D_DISKLESS && device->ldev == NULL) /* special case, drbd_md_read() during drbd_adm_attach(): no get_ldev */ ; else if (!get_ldev_if_state(device, D_ATTACHING)) { @@ -174,10 +174,10 @@ static int _drbd_md_sync_page_io(struct drbd_device *device, bio_get(bio); /* one bio_put() is in the completion handler */ atomic_inc(&device->md_io.in_use); /* drbd_md_put_buffer() is in the completion handler */ device->md_io.submit_jif = jiffies; - if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) + if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) bio_io_error(bio); else - submit_bio(rw, bio); + submit_bio(op | op_flags, bio); wait_until_done_or_force_detached(device, bdev, &device->md_io.done); if (!bio->bi_error) err = device->md_io.error; @@ -188,7 +188,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device, } int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bdev, - sector_t sector, int rw) + sector_t sector, int op) { int err; D_ASSERT(device, atomic_read(&device->md_io.in_use) == 1); @@ -197,19 +197,21 @@ int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bd dynamic_drbd_dbg(device, "meta_data io: %s [%d]:%s(,%llus,%s) %pS\n", current->comm, current->pid, __func__, - (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ", + (unsigned long long)sector, (op == REQ_OP_WRITE) ? "WRITE" : "READ", (void*)_RET_IP_ ); if (sector < drbd_md_first_sector(bdev) || sector + 7 > drbd_md_last_sector(bdev)) drbd_alert(device, "%s [%d]:%s(,%llus,%s) out of range md access!\n", current->comm, current->pid, __func__, - (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ"); + (unsigned long long)sector, + (op == REQ_OP_WRITE) ? "WRITE" : "READ"); - err = _drbd_md_sync_page_io(device, bdev, sector, rw); + err = _drbd_md_sync_page_io(device, bdev, sector, op); if (err) { drbd_err(device, "drbd_md_sync_page_io(,%llus,%s) failed with error %d\n", - (unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ", err); + (unsigned long long)sector, + (op == REQ_OP_WRITE) ? "WRITE" : "READ", err); } return err; } diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c index e5e0f19..7ea1502 100644 --- a/drivers/block/drbd/drbd_bitmap.c +++ b/drivers/block/drbd/drbd_bitmap.c @@ -988,7 +988,7 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho struct drbd_bitmap *b = device->bitmap; struct page *page; unsigned int len; - unsigned int rw = (ctx->flags & BM_AIO_READ) ? READ : WRITE; + unsigned int rw = (ctx->flags & BM_AIO_READ) ? REQ_OP_READ : REQ_OP_WRITE; sector_t on_disk_sector = device->ldev->md.md_offset + device->ldev->md.bm_offset; @@ -1020,7 +1020,7 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho bio->bi_private = ctx; bio->bi_end_io = drbd_bm_endio; - if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) { + if (drbd_insert_fault(device, (rw == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) { bio->bi_rw |= rw; bio_io_error(bio); } else { diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 015c6e9..2934481 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1494,7 +1494,7 @@ extern int drbd_resync_finished(struct drbd_device *device); extern void *drbd_md_get_buffer(struct drbd_device *device, const char *intent); extern void drbd_md_put_buffer(struct drbd_device *device); extern int drbd_md_sync_page_io(struct drbd_device *device, - struct drbd_backing_dev *bdev, sector_t sector, int rw); + struct drbd_backing_dev *bdev, sector_t sector, int op); extern void drbd_ov_out_of_sync_found(struct drbd_device *, sector_t, int); extern void wait_until_done_or_force_detached(struct drbd_device *device, struct drbd_backing_dev *bdev, unsigned int *done); diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 74d97f4..9eb8039 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -3080,7 +3080,7 @@ void drbd_md_write(struct drbd_device *device, void *b) D_ASSERT(device, drbd_md_ss(device->ldev) == device->ldev->md.md_offset); sector = device->ldev->md.md_offset; - if (drbd_md_sync_page_io(device, device->ldev, sector, WRITE)) { + if (drbd_md_sync_page_io(device, device->ldev, sector, REQ_OP_WRITE)) { /* this was a try anyways ... */ drbd_err(device, "meta data update failed!\n"); drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR); @@ -3278,7 +3278,8 @@ int drbd_md_read(struct drbd_device *device, struct drbd_backing_dev *bdev) bdev->md.meta_dev_idx = bdev->disk_conf->meta_dev_idx; bdev->md.md_offset = drbd_md_ss(bdev); - if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset, READ)) { + if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset, + REQ_OP_READ)) { /* NOTE: can't do normal error processing here as this is called BEFORE disk is attached */ drbd_err(device, "Error while reading metadata.\n"); -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/