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authorMike Christie <mchristi@redhat.com>2016-06-05 14:32:23 -0500
committerJens Axboe <axboe@fb.com>2016-06-07 13:41:38 -0600
commit3a5e02ced11e22ecd9da3d6710afe15bcfee1d10 (patch)
tree78f6d1a737b01b559b61310b9355f1f7ecfdd54c /drivers
parent4e1b2d52a80d79296a5d899d73249748dea71a53 (diff)
block, drivers: add REQ_OP_FLUSH operation
This adds a REQ_OP_FLUSH operation that is sent to request_fn based drivers by the block layer's flush code, instead of sending requests with the request->cmd_flags REQ_FLUSH bit set. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/loop.c4
-rw-r--r--drivers/block/nbd.c2
-rw-r--r--drivers/block/osdblk.c2
-rw-r--r--drivers/block/ps3disk.c4
-rw-r--r--drivers/block/skd_main.c2
-rw-r--r--drivers/block/virtio_blk.c2
-rw-r--r--drivers/block/xen-blkfront.c8
-rw-r--r--drivers/ide/ide-disk.c2
-rw-r--r--drivers/md/dm.c2
-rw-r--r--drivers/mmc/card/block.c6
-rw-r--r--drivers/mmc/card/queue.h3
-rw-r--r--drivers/mtd/mtd_blkdevs.c2
-rw-r--r--drivers/nvme/host/core.c2
-rw-r--r--drivers/scsi/sd.c7
14 files changed, 24 insertions, 24 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index b9b737cafd5f..364d491d4bdd 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -542,7 +542,7 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq)
pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
if (op_is_write(req_op(rq))) {
- if (rq->cmd_flags & REQ_FLUSH)
+ if (req_op(rq) == REQ_OP_FLUSH)
ret = lo_req_flush(lo, rq);
else if (req_op(rq) == REQ_OP_DISCARD)
ret = lo_discard(lo, rq, pos);
@@ -1659,7 +1659,7 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (lo->lo_state != Lo_bound)
return -EIO;
- if (lo->use_dio && (!(cmd->rq->cmd_flags & REQ_FLUSH) ||
+ if (lo->use_dio && (req_op(cmd->rq) != REQ_OP_FLUSH ||
req_op(cmd->rq) == REQ_OP_DISCARD))
cmd->use_aio = true;
else
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 6c2c28d124d0..d6f3c9336f29 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -284,7 +284,7 @@ static int nbd_send_req(struct nbd_device *nbd, struct request *req)
type = NBD_CMD_DISC;
else if (req_op(req) == REQ_OP_DISCARD)
type = NBD_CMD_TRIM;
- else if (req->cmd_flags & REQ_FLUSH)
+ else if (req_op(req) == REQ_OP_FLUSH)
type = NBD_CMD_FLUSH;
else if (rq_data_dir(req) == WRITE)
type = NBD_CMD_WRITE;
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index c2854a2bfdb0..92900f5f0b47 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -321,7 +321,7 @@ static void osdblk_rq_fn(struct request_queue *q)
* driver-specific, etc.
*/
- do_flush = rq->cmd_flags & REQ_FLUSH;
+ do_flush = (req_op(rq) == REQ_OP_FLUSH);
do_write = (rq_data_dir(rq) == WRITE);
if (!do_flush) { /* osd_flush does not use a bio */
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index 4b7e405830d7..acb44529c05e 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -196,7 +196,7 @@ static void ps3disk_do_request(struct ps3_storage_device *dev,
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
while ((req = blk_fetch_request(q))) {
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req_op(req) == REQ_OP_FLUSH) {
if (ps3disk_submit_flush_request(dev, req))
break;
} else if (req->cmd_type == REQ_TYPE_FS) {
@@ -256,7 +256,7 @@ static irqreturn_t ps3disk_interrupt(int irq, void *data)
return IRQ_HANDLED;
}
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req_op(req) == REQ_OP_FLUSH) {
read = 0;
op = "flush";
} else {
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 910e065918af..5c07a23e2ada 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -597,7 +597,7 @@ static void skd_request_fn(struct request_queue *q)
data_dir = rq_data_dir(req);
io_flags = req->cmd_flags;
- if (io_flags & REQ_FLUSH)
+ if (req_op(req) == REQ_OP_FLUSH)
flush++;
if (io_flags & REQ_FUA)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 42758b52768c..18e4069dd24b 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -172,7 +172,7 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
BUG_ON(req->nr_phys_segments + 2 > vblk->sg_elems);
vbr->req = req;
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req_op(req) == REQ_OP_FLUSH) {
vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_FLUSH);
vbr->out_hdr.sector = 0;
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 6fd160197b7a..3aeb25bd5057 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -743,7 +743,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
* The indirect operation can only be a BLKIF_OP_READ or
* BLKIF_OP_WRITE
*/
- BUG_ON(req->cmd_flags & (REQ_FLUSH | REQ_FUA));
+ BUG_ON(req_op(req) == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA);
ring_req->operation = BLKIF_OP_INDIRECT;
ring_req->u.indirect.indirect_op = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
@@ -755,7 +755,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
ring_req->u.rw.handle = info->handle;
ring_req->operation = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
- if (req->cmd_flags & (REQ_FLUSH | REQ_FUA)) {
+ if (req_op(req) == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA) {
/*
* Ideally we can do an unordered flush-to-disk.
* In case the backend onlysupports barriers, use that.
@@ -865,7 +865,7 @@ static inline bool blkif_request_flush_invalid(struct request *req,
struct blkfront_info *info)
{
return ((req->cmd_type != REQ_TYPE_FS) ||
- ((req->cmd_flags & REQ_FLUSH) &&
+ ((req_op(req) == REQ_OP_FLUSH) &&
!(info->feature_flush & REQ_FLUSH)) ||
((req->cmd_flags & REQ_FUA) &&
!(info->feature_flush & REQ_FUA)));
@@ -2055,7 +2055,7 @@ static int blkif_recover(struct blkfront_info *info)
/*
* Get the bios in the request so we can re-queue them.
*/
- if (copy[i].request->cmd_flags & REQ_FLUSH ||
+ if (req_op(copy[i].request) == REQ_OP_FLUSH ||
req_op(copy[i].request) == REQ_OP_DISCARD ||
copy[i].request->cmd_flags & (REQ_FUA | REQ_SECURE)) {
/*
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 05dbcce70b0e..e378ef70ed63 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -431,7 +431,7 @@ static int idedisk_prep_fn(struct request_queue *q, struct request *rq)
ide_drive_t *drive = q->queuedata;
struct ide_cmd *cmd;
- if (!(rq->cmd_flags & REQ_FLUSH))
+ if (req_op(rq) != REQ_OP_FLUSH)
return BLKPREP_OK;
if (rq->special) {
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index f6b104c77b6d..fcc68c8edba0 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2171,7 +2171,7 @@ static void dm_request_fn(struct request_queue *q)
/* always use block 0 to find the target for flushes for now */
pos = 0;
- if (!(rq->cmd_flags & REQ_FLUSH))
+ if (req_op(rq) != REQ_OP_FLUSH)
pos = blk_rq_pos(rq);
if ((dm_request_peeked_before_merge_deadline(md) &&
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 201a8719f6c4..bca20f88a8b2 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1722,7 +1722,8 @@ static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req)
!IS_ALIGNED(blk_rq_sectors(next), 8))
break;
- if (req_op(next) == REQ_OP_DISCARD || next->cmd_flags & REQ_FLUSH)
+ if (req_op(next) == REQ_OP_DISCARD ||
+ req_op(next) == REQ_OP_FLUSH)
break;
if (rq_data_dir(cur) != rq_data_dir(next))
@@ -2147,7 +2148,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
struct mmc_card *card = md->queue.card;
struct mmc_host *host = card->host;
unsigned long flags;
- unsigned int cmd_flags = req ? req->cmd_flags : 0;
if (req && !mq->mqrq_prev->req)
/* claim host only for the first request */
@@ -2171,7 +2171,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
ret = mmc_blk_issue_secdiscard_rq(mq, req);
else
ret = mmc_blk_issue_discard_rq(mq, req);
- } else if (cmd_flags & REQ_FLUSH) {
+ } else if (req && req_op(req) == REQ_OP_FLUSH) {
/* complete ongoing async transfer before issuing flush */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index 9fb26f20a44d..d62531124d54 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -3,7 +3,8 @@
static inline bool mmc_req_is_special(struct request *req)
{
- return req && (req->cmd_flags & REQ_FLUSH || req_op(req) == REQ_OP_DISCARD);
+ return req &&
+ (req_op(req) == REQ_OP_FLUSH || req_op(req) == REQ_OP_DISCARD);
}
struct request;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 4eb9a5fb151c..78b3eb45faf6 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -87,7 +87,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
if (req->cmd_type != REQ_TYPE_FS)
return -EIO;
- if (req->cmd_flags & REQ_FLUSH)
+ if (req_op(req) == REQ_OP_FLUSH)
return tr->flush(dev);
if (blk_rq_pos(req) + blk_rq_cur_sectors(req) >
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 089b8b8aad4f..abdfdcfb66f4 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -290,7 +290,7 @@ int nvme_setup_cmd(struct nvme_ns *ns, struct request *req,
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
memcpy(cmd, req->cmd, sizeof(*cmd));
- else if (req->cmd_flags & REQ_FLUSH)
+ else if (req_op(req) == REQ_OP_FLUSH)
nvme_setup_flush(ns, cmd);
else if (req_op(req) == REQ_OP_DISCARD)
ret = nvme_setup_discard(ns, req, cmd);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index fad86ad89e64..5a9db0fe1ee0 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1143,12 +1143,11 @@ static int sd_init_command(struct scsi_cmnd *cmd)
return sd_setup_discard_cmnd(cmd);
case REQ_OP_WRITE_SAME:
return sd_setup_write_same_cmnd(cmd);
+ case REQ_OP_FLUSH:
+ return sd_setup_flush_cmnd(cmd);
case REQ_OP_READ:
case REQ_OP_WRITE:
- if (rq->cmd_flags & REQ_FLUSH)
- return sd_setup_flush_cmnd(cmd);
- else
- return sd_setup_read_write_cmnd(cmd);
+ return sd_setup_read_write_cmnd(cmd);
default:
BUG();
}