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block: unify flags for struct bio and struct request

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Remove the current bio flags and reuse the request flags for the bio, too.
This allows to more easily trace the type of I/O from the filesystem
down to the block driver.  There were two flags in the bio that were
missing in the requests:  BIO_RW_UNPLUG and BIO_RW_AHEAD.  Also I've
renamed two request flags that had a superflous RW in them.

Note that the flags are in bio.h despite having the REQ_ name - as
blkdev.h includes bio.h that is the only way to go for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Christoph Hellwig 2010-08-07 18:20:39 +02:00 committed by Jens Axboe
parent 33659ebbae
commit 7b6d91daee
47 changed files with 241 additions and 288 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
block/blk-barrier.c
View File

@ -203,7 +203,7 @@ static inline bool start_ordered(struct request_queue *q, struct request **rqp)
/* initialize proxy request and queue it */
blk_rq_init(q, rq);
if (bio_data_dir(q->orig_bar_rq->bio) == WRITE)
rq->cmd_flags |= REQ_RW;
rq->cmd_flags |= REQ_WRITE;
if (q->ordered & QUEUE_ORDERED_DO_FUA)
rq->cmd_flags |= REQ_FUA;
init_request_from_bio(rq, q->orig_bar_rq->bio);

37
block/blk-core.c
View File

@ -1140,25 +1140,9 @@ void init_request_from_bio(struct request *req, struct bio *bio)
req->cpu = bio->bi_comp_cpu;
req->cmd_type = REQ_TYPE_FS;
/*
* Inherit FAILFAST from bio (for read-ahead, and explicit
* FAILFAST). FAILFAST flags are identical for req and bio.
*/
if (bio_rw_flagged(bio, BIO_RW_AHEAD))
req->cmd_flags |= bio->bi_rw & REQ_COMMON_MASK;
if (bio->bi_rw & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
else
req->cmd_flags |= bio->bi_rw & REQ_FAILFAST_MASK;
if (bio_rw_flagged(bio, BIO_RW_DISCARD))
req->cmd_flags |= REQ_DISCARD;
if (bio_rw_flagged(bio, BIO_RW_BARRIER))
req->cmd_flags |= REQ_HARDBARRIER;
if (bio_rw_flagged(bio, BIO_RW_SYNCIO))
req->cmd_flags |= REQ_RW_SYNC;
if (bio_rw_flagged(bio, BIO_RW_META))
req->cmd_flags |= REQ_RW_META;
if (bio_rw_flagged(bio, BIO_RW_NOIDLE))
req->cmd_flags |= REQ_NOIDLE;
req->errors = 0;
req->__sector = bio->bi_sector;
@ -1181,12 +1165,12 @@ static int __make_request(struct request_queue *q, struct bio *bio)
int el_ret;
unsigned int bytes = bio->bi_size;
const unsigned short prio = bio_prio(bio);
const bool sync = bio_rw_flagged(bio, BIO_RW_SYNCIO);
const bool unplug = bio_rw_flagged(bio, BIO_RW_UNPLUG);
const bool sync = (bio->bi_rw & REQ_SYNC);
const bool unplug = (bio->bi_rw & REQ_UNPLUG);
const unsigned int ff = bio->bi_rw & REQ_FAILFAST_MASK;
int rw_flags;
if (bio_rw_flagged(bio, BIO_RW_BARRIER) &&
if ((bio->bi_rw & REQ_HARDBARRIER) &&
(q->next_ordered == QUEUE_ORDERED_NONE)) {
bio_endio(bio, -EOPNOTSUPP);
return 0;
@ -1200,7 +1184,7 @@ static int __make_request(struct request_queue *q, struct bio *bio)
spin_lock_irq(q->queue_lock);
if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER)) || elv_queue_empty(q))
if (unlikely((bio->bi_rw & REQ_HARDBARRIER)) || elv_queue_empty(q))
goto get_rq;
el_ret = elv_merge(q, &req, bio);
@ -1275,7 +1259,7 @@ get_rq:
*/
rw_flags = bio_data_dir(bio);
if (sync)
rw_flags |= REQ_RW_SYNC;
rw_flags |= REQ_SYNC;
/*
* Grab a free request. This is might sleep but can not fail.
@ -1464,7 +1448,7 @@ static inline void __generic_make_request(struct bio *bio)
goto end_io;
}
if (unlikely(!bio_rw_flagged(bio, BIO_RW_DISCARD) &&
if (unlikely(!(bio->bi_rw & REQ_DISCARD) &&
nr_sectors > queue_max_hw_sectors(q))) {
printk(KERN_ERR "bio too big device %s (%u > %u)\n",
bdevname(bio->bi_bdev, b),
@ -1497,8 +1481,7 @@ static inline void __generic_make_request(struct bio *bio)
if (bio_check_eod(bio, nr_sectors))
goto end_io;
if (bio_rw_flagged(bio, BIO_RW_DISCARD) &&
!blk_queue_discard(q)) {
if ((bio->bi_rw & REQ_DISCARD) && !blk_queue_discard(q)) {
err = -EOPNOTSUPP;
goto end_io;
}
@ -2365,7 +2348,7 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio)
{
/* Bit 0 (R/W) is identical in rq->cmd_flags and bio->bi_rw */
rq->cmd_flags |= bio->bi_rw & REQ_RW;
rq->cmd_flags |= bio->bi_rw & REQ_WRITE;
if (bio_has_data(bio)) {
rq->nr_phys_segments = bio_phys_segments(q, bio);

2
block/blk-map.c
View File

@ -307,7 +307,7 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
return PTR_ERR(bio);
if (rq_data_dir(rq) == WRITE)
bio->bi_rw |= (1 << BIO_RW);
bio->bi_rw |= (1 << REQ_WRITE);
if (do_copy)
rq->cmd_flags |= REQ_COPY_USER;

2
block/blk-merge.c
View File

@ -180,7 +180,7 @@ new_segment:
}
if (q->dma_drain_size && q->dma_drain_needed(rq)) {
if (rq->cmd_flags & REQ_RW)
if (rq->cmd_flags & REQ_WRITE)
memset(q->dma_drain_buffer, 0, q->dma_drain_size);
sg->page_link &= ~0x02;

14
block/cfq-iosched.c
View File

@ -458,7 +458,7 @@ static inline struct cfq_data *cic_to_cfqd(struct cfq_io_context *cic)
*/
static inline bool cfq_bio_sync(struct bio *bio)
{
return bio_data_dir(bio) == READ || bio_rw_flagged(bio, BIO_RW_SYNCIO);
return bio_data_dir(bio) == READ || (bio->bi_rw & REQ_SYNC);
}
/*
@ -646,10 +646,10 @@ cfq_choose_req(struct cfq_data *cfqd, struct request *rq1, struct request *rq2,
return rq1;
else if (rq_is_sync(rq2) && !rq_is_sync(rq1))
return rq2;
if ((rq1->cmd_flags & REQ_RW_META) && !(rq2->cmd_flags & REQ_RW_META))
if ((rq1->cmd_flags & REQ_META) && !(rq2->cmd_flags & REQ_META))
return rq1;
else if ((rq2->cmd_flags & REQ_RW_META) &&
!(rq1->cmd_flags & REQ_RW_META))
else if ((rq2->cmd_flags & REQ_META) &&
!(rq1->cmd_flags & REQ_META))
return rq2;
s1 = blk_rq_pos(rq1);
@ -1485,7 +1485,7 @@ static void cfq_remove_request(struct request *rq)
cfqq->cfqd->rq_queued--;
cfq_blkiocg_update_io_remove_stats(&(RQ_CFQG(rq))->blkg,
rq_data_dir(rq), rq_is_sync(rq));
if (rq->cmd_flags & REQ_RW_META) {
if (rq->cmd_flags & REQ_META) {
WARN_ON(!cfqq->meta_pending);
cfqq->meta_pending--;
}
@ -3177,7 +3177,7 @@ cfq_should_preempt(struct cfq_data *cfqd, struct cfq_queue *new_cfqq,
* So both queues are sync. Let the new request get disk time if
* it's a metadata request and the current queue is doing regular IO.
*/
if ((rq->cmd_flags & REQ_RW_META) && !cfqq->meta_pending)
if ((rq->cmd_flags & REQ_META) && !cfqq->meta_pending)
return true;
/*
@ -3231,7 +3231,7 @@ cfq_rq_enqueued(struct cfq_data *cfqd, struct cfq_queue *cfqq,
struct cfq_io_context *cic = RQ_CIC(rq);
cfqd->rq_queued++;
if (rq->cmd_flags & REQ_RW_META)
if (rq->cmd_flags & REQ_META)
cfqq->meta_pending++;
cfq_update_io_thinktime(cfqd, cic);

3
block/elevator.c
View File

@ -79,8 +79,7 @@ int elv_rq_merge_ok(struct request *rq, struct bio *bio)
/*
* Don't merge file system requests and discard requests
*/
if (bio_rw_flagged(bio, BIO_RW_DISCARD) !=
bio_rw_flagged(rq->bio, BIO_RW_DISCARD))
if ((bio->bi_rw & REQ_DISCARD) != (rq->bio->bi_rw & REQ_DISCARD))
return 0;
/*

2
drivers/ata/libata-scsi.c
View File

@ -1114,7 +1114,7 @@ static int atapi_drain_needed(struct request *rq)
if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC))
return 0;
if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_RW))
if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE))
return 0;
return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC;

2
drivers/block/aoe/aoeblk.c
View File

@ -173,7 +173,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio)
BUG();
bio_endio(bio, -ENXIO);
return 0;
} else if (bio_rw_flagged(bio, BIO_RW_BARRIER)) {
} else if (bio->bi_rw & REQ_HARDBARRIER) {
bio_endio(bio, -EOPNOTSUPP);
return 0;
} else if (bio->bi_io_vec == NULL) {

2
drivers/block/brd.c
View File

@ -340,7 +340,7 @@ static int brd_make_request(struct request_queue *q, struct bio *bio)
get_capacity(bdev->bd_disk))
goto out;
if (unlikely(bio_rw_flagged(bio, BIO_RW_DISCARD))) {
if (unlikely(bio->bi_rw & REQ_DISCARD)) {
err = 0;
discard_from_brd(brd, sector, bio->bi_size);
goto out;

8
drivers/block/drbd/drbd_actlog.c
View File

@ -79,8 +79,8 @@ static int _drbd_md_sync_page_io(struct drbd_conf *mdev,
md_io.error = 0;
if ((rw & WRITE) && !test_bit(MD_NO_BARRIER, &mdev->flags))
rw |= (1 << BIO_RW_BARRIER);
rw |= ((1<<BIO_RW_UNPLUG) | (1<<BIO_RW_SYNCIO));
rw |= REQ_HARDBARRIER;
rw |= REQ_UNPLUG | REQ_SYNC;
retry:
bio = bio_alloc(GFP_NOIO, 1);
@ -103,11 +103,11 @@ static int _drbd_md_sync_page_io(struct drbd_conf *mdev,
/* check for unsupported barrier op.
* would rather check on EOPNOTSUPP, but that is not reliable.
* don't try again for ANY return value != 0 */
if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER) && !ok)) {
if (unlikely((bio->bi_rw & REQ_HARDBARRIER) && !ok)) {
/* Try again with no barrier */
dev_warn(DEV, "Barriers not supported on meta data device - disabling\n");
set_bit(MD_NO_BARRIER, &mdev->flags);
rw &= ~(1 << BIO_RW_BARRIER);
rw &= ~REQ_HARDBARRIER;
bio_put(bio);
goto retry;
}

6
drivers/block/drbd/drbd_main.c
View File

@ -2425,15 +2425,15 @@ int drbd_send_dblock(struct drbd_conf *mdev, struct drbd_request *req)
/* NOTE: no need to check if barriers supported here as we would
* not pass the test in make_request_common in that case
*/
if (bio_rw_flagged(req->master_bio, BIO_RW_BARRIER)) {
if (req->master_bio->bi_rw & REQ_HARDBARRIER) {
dev_err(DEV, "ASSERT FAILED would have set DP_HARDBARRIER\n");
/* dp_flags |= DP_HARDBARRIER; */
}
if (bio_rw_flagged(req->master_bio, BIO_RW_SYNCIO))
if (req->master_bio->bi_rw & REQ_SYNC)
dp_flags |= DP_RW_SYNC;
/* for now handle SYNCIO and UNPLUG
* as if they still were one and the same flag */
if (bio_rw_flagged(req->master_bio, BIO_RW_UNPLUG))
if (req->master_bio->bi_rw & REQ_UNPLUG)
dp_flags |= DP_RW_SYNC;
if (mdev->state.conn >= C_SYNC_SOURCE &&
mdev->state.conn <= C_PAUSED_SYNC_T)

22
drivers/block/drbd/drbd_receiver.c
View File

@ -1180,7 +1180,7 @@ next_bio:
bio->bi_sector = sector;
bio->bi_bdev = mdev->ldev->backing_bdev;
/* we special case some flags in the multi-bio case, see below
* (BIO_RW_UNPLUG, BIO_RW_BARRIER) */
* (REQ_UNPLUG, REQ_HARDBARRIER) */
bio->bi_rw = rw;
bio->bi_private = e;
bio->bi_end_io = drbd_endio_sec;
@ -1209,16 +1209,16 @@ next_bio:
bios = bios->bi_next;
bio->bi_next = NULL;
/* strip off BIO_RW_UNPLUG unless it is the last bio */
/* strip off REQ_UNPLUG unless it is the last bio */
if (bios)
bio->bi_rw &= ~(1<<BIO_RW_UNPLUG);
bio->bi_rw &= ~REQ_UNPLUG;
drbd_generic_make_request(mdev, fault_type, bio);
/* strip off BIO_RW_BARRIER,
/* strip off REQ_HARDBARRIER,
* unless it is the first or last bio */
if (bios && bios->bi_next)
bios->bi_rw &= ~(1<<BIO_RW_BARRIER);
bios->bi_rw &= ~REQ_HARDBARRIER;
} while (bios);
maybe_kick_lo(mdev);
return 0;
@ -1233,7 +1233,7 @@ fail:
}
/**
* w_e_reissue() - Worker callback; Resubmit a bio, without BIO_RW_BARRIER set
* w_e_reissue() - Worker callback; Resubmit a bio, without REQ_HARDBARRIER set
* @mdev: DRBD device.
* @w: work object.
* @cancel: The connection will be closed anyways (unused in this callback)
@ -1245,7 +1245,7 @@ int w_e_reissue(struct drbd_conf *mdev, struct drbd_work *w, int cancel) __relea
(and DE_BARRIER_IN_NEXT_EPOCH_ISSUED in the previous Epoch)
so that we can finish that epoch in drbd_may_finish_epoch().
That is necessary if we already have a long chain of Epochs, before
we realize that BIO_RW_BARRIER is actually not supported */
we realize that REQ_HARDBARRIER is actually not supported */
/* As long as the -ENOTSUPP on the barrier is reported immediately
that will never trigger. If it is reported late, we will just
@ -1824,14 +1824,14 @@ static int receive_Data(struct drbd_conf *mdev, struct p_header *h)
epoch = list_entry(e->epoch->list.prev, struct drbd_epoch, list);
if (epoch == e->epoch) {
set_bit(DE_CONTAINS_A_BARRIER, &e->epoch->flags);
rw |= (1<<BIO_RW_BARRIER);
rw |= REQ_HARDBARRIER;
e->flags |= EE_IS_BARRIER;
} else {
if (atomic_read(&epoch->epoch_size) > 1 ||
!test_bit(DE_CONTAINS_A_BARRIER, &epoch->flags)) {
set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &epoch->flags);
set_bit(DE_CONTAINS_A_BARRIER, &e->epoch->flags);
rw |= (1<<BIO_RW_BARRIER);
rw |= REQ_HARDBARRIER;
e->flags |= EE_IS_BARRIER;
}
}
@ -1841,10 +1841,10 @@ static int receive_Data(struct drbd_conf *mdev, struct p_header *h)
dp_flags = be32_to_cpu(p->dp_flags);
if (dp_flags & DP_HARDBARRIER) {
dev_err(DEV, "ASSERT FAILED would have submitted barrier request\n");
/* rw |= (1<<BIO_RW_BARRIER); */
/* rw |= REQ_HARDBARRIER; */
}
if (dp_flags & DP_RW_SYNC)
rw |= (1<<BIO_RW_SYNCIO) | (1<<BIO_RW_UNPLUG);
rw |= REQ_SYNC | REQ_UNPLUG;
if (dp_flags & DP_MAY_SET_IN_SYNC)
e->flags |= EE_MAY_SET_IN_SYNC;

2
drivers/block/drbd/drbd_req.c
View File

@ -997,7 +997,7 @@ int drbd_make_request_26(struct request_queue *q, struct bio *bio)
* because of those XXX, this is not yet enabled,
* i.e. in drbd_init_set_defaults we set the NO_BARRIER_SUPP bit.
*/
if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER) && test_bit(NO_BARRIER_SUPP, &mdev->flags))) {
if (unlikely(bio->bi_rw & REQ_HARDBARRIER) && test_bit(NO_BARRIER_SUPP, &mdev->flags)) {
/* dev_warn(DEV, "Rejecting barrier request as underlying device does not support\n"); */
bio_endio(bio, -EOPNOTSUPP);
return 0;

2
drivers/block/loop.c
View File

@ -476,7 +476,7 @@ static int do_bio_filebacked(struct loop_device *lo, struct bio *bio)
pos = ((loff_t) bio->bi_sector << 9) + lo->lo_offset;
if (bio_rw(bio) == WRITE) {
bool barrier = bio_rw_flagged(bio, BIO_RW_BARRIER);
bool barrier = (bio->bi_rw & REQ_HARDBARRIER);
struct file *file = lo->lo_backing_file;
if (barrier) {

2
drivers/block/pktcdvd.c
View File

@ -1221,7 +1221,7 @@ static int pkt_start_recovery(struct packet_data *pkt)
pkt->bio->bi_flags = 1 << BIO_UPTODATE;
pkt->bio->bi_idx = 0;
BUG_ON(pkt->bio->bi_rw != (1 << BIO_RW));
BUG_ON(pkt->bio->bi_rw != REQ_WRITE);
BUG_ON(pkt->bio->bi_vcnt != pkt->frames);
BUG_ON(pkt->bio->bi_size != pkt->frames * CD_FRAMESIZE);
BUG_ON(pkt->bio->bi_end_io != pkt_end_io_packet_write);

2
drivers/block/umem.c
View File

@ -478,7 +478,7 @@ static void process_page(unsigned long data)
le32_to_cpu(desc->local_addr)>>9,
le32_to_cpu(desc->transfer_size));
dump_dmastat(card, control);
} else if (test_bit(BIO_RW, &bio->bi_rw) &&
} else if ((bio->bi_rw & REQ_WRITE) &&
le32_to_cpu(desc->local_addr) >> 9 ==
card->init_size) {
card->init_size += le32_to_cpu(desc->transfer_size) >> 9;

2
drivers/ide/ide-cd_ioctl.c
View File

@ -454,7 +454,7 @@ int ide_cdrom_packet(struct cdrom_device_info *cdi,
touch it at all. */
if (cgc->data_direction == CGC_DATA_WRITE)
flags |= REQ_RW;
flags |= REQ_WRITE;
if (cgc->sense)
memset(cgc->sense, 0, sizeof(struct request_sense));

2
drivers/ide/ide-floppy.c
View File

@ -207,7 +207,7 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,
memcpy(rq->cmd, pc->c, 12);
pc->rq = rq;
if (rq->cmd_flags & REQ_RW)
if (rq->cmd_flags & REQ_WRITE)
pc->flags |= PC_FLAG_WRITING;
pc->flags |= PC_FLAG_DMA_OK;

12
drivers/md/dm-io.c
View File

@ -356,7 +356,7 @@ static void dispatch_io(int rw, unsigned int num_regions,
BUG_ON(num_regions > DM_IO_MAX_REGIONS);
if (sync)
rw |= (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG);
rw |= REQ_SYNC | REQ_UNPLUG;
/*
* For multiple regions we need to be careful to rewind
@ -364,7 +364,7 @@ static void dispatch_io(int rw, unsigned int num_regions,
*/
for (i = 0; i < num_regions; i++) {
*dp = old_pages;
if (where[i].count || (rw & (1 << BIO_RW_BARRIER)))
if (where[i].count || (rw & REQ_HARDBARRIER))
do_region(rw, i, where + i, dp, io);
}
@ -412,8 +412,8 @@ retry:
}
set_current_state(TASK_RUNNING);
if (io->eopnotsupp_bits && (rw & (1 << BIO_RW_BARRIER))) {
rw &= ~(1 << BIO_RW_BARRIER);
if (io->eopnotsupp_bits && (rw & REQ_HARDBARRIER)) {
rw &= ~REQ_HARDBARRIER;
goto retry;
}
@ -479,8 +479,8 @@ static int dp_init(struct dm_io_request *io_req, struct dpages *dp)
* New collapsed (a)synchronous interface.
*
* If the IO is asynchronous (i.e. it has notify.fn), you must either unplug
* the queue with blk_unplug() some time later or set the BIO_RW_SYNC bit in
* io_req->bi_rw. If you fail to do one of these, the IO will be submitted to
* the queue with blk_unplug() some time later or set REQ_SYNC in
io_req->bi_rw. If you fail to do one of these, the IO will be submitted to
* the disk after q->unplug_delay, which defaults to 3ms in blk-settings.c.
*/
int dm_io(struct dm_io_request *io_req, unsigned num_regions,

2
drivers/md/dm-kcopyd.c
View File

@ -345,7 +345,7 @@ static int run_io_job(struct kcopyd_job *job)
{
int r;
struct dm_io_request io_req = {
.bi_rw = job->rw | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG),
.bi_rw = job->rw | REQ_SYNC | REQ_UNPLUG,
.mem.type = DM_IO_PAGE_LIST,
.mem.ptr.pl = job->pages,
.mem.offset = job->offset,

2
drivers/md/dm-raid1.c
View File

@ -1211,7 +1211,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio,
if (error == -EOPNOTSUPP)
goto out;
if ((error == -EWOULDBLOCK) && bio_rw_flagged(bio, BIO_RW_AHEAD))
if ((error == -EWOULDBLOCK) && (bio->bi_rw & REQ_RAHEAD))
goto out;
if (unlikely(error)) {

2
drivers/md/dm-stripe.c
View File

@ -284,7 +284,7 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio,
if (!error)
return 0; /* I/O complete */
if ((error == -EWOULDBLOCK) && bio_rw_flagged(bio, BIO_RW_AHEAD))
if ((error == -EWOULDBLOCK) && (bio->bi_rw & REQ_RAHEAD))
return error;
if (error == -EOPNOTSUPP)

14
drivers/md/dm.c
View File

@ -614,7 +614,7 @@ static void dec_pending(struct dm_io *io, int error)
*/
spin_lock_irqsave(&md->deferred_lock, flags);
if (__noflush_suspending(md)) {
if (!bio_rw_flagged(io->bio, BIO_RW_BARRIER))
if (!(io->bio->bi_rw & REQ_HARDBARRIER))
bio_list_add_head(&md->deferred,
io->bio);
} else
@ -626,7 +626,7 @@ static void dec_pending(struct dm_io *io, int error)
io_error = io->error;
bio = io->bio;
if (bio_rw_flagged(bio, BIO_RW_BARRIER)) {
if (bio->bi_rw & REQ_HARDBARRIER) {
/*
* There can be just one barrier request so we use
* a per-device variable for error reporting.
@ -1106,7 +1106,7 @@ static struct bio *split_bvec(struct bio *bio, sector_t sector,
clone->bi_sector = sector;
clone->bi_bdev = bio->bi_bdev;
clone->bi_rw = bio->bi_rw & ~(1 << BIO_RW_BARRIER);
clone->bi_rw = bio->bi_rw & ~REQ_HARDBARRIER;
clone->bi_vcnt = 1;
clone->bi_size = to_bytes(len);
clone->bi_io_vec->bv_offset = offset;
@ -1133,7 +1133,7 @@ static struct bio *clone_bio(struct bio *bio, sector_t sector,
clone = bio_alloc_bioset(GFP_NOIO, bio->bi_max_vecs, bs);
__bio_clone(clone, bio);
clone->bi_rw &= ~(1 << BIO_RW_BARRIER);
clone->bi_rw &= ~REQ_HARDBARRIER;
clone->bi_destructor = dm_bio_destructor;
clone->bi_sector = sector;
clone->bi_idx = idx;
@ -1301,7 +1301,7 @@ static void __split_and_process_bio(struct mapped_device *md, struct bio *bio)
ci.map = dm_get_live_table(md);
if (unlikely(!ci.map)) {
if (!bio_rw_flagged(bio, BIO_RW_BARRIER))
if (!(bio->bi_rw & REQ_HARDBARRIER))
bio_io_error(bio);
else
if (!md->barrier_error)
@ -1414,7 +1414,7 @@ static int _dm_request(struct request_queue *q, struct bio *bio)
* we have to queue this io for later.
*/
if (unlikely(test_bit(DMF_QUEUE_IO_TO_THREAD, &md->flags)) ||
unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) {
unlikely(bio->bi_rw & REQ_HARDBARRIER)) {
up_read(&md->io_lock);
if (unlikely(test_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags)) &&
@ -2296,7 +2296,7 @@ static void dm_wq_work(struct work_struct *work)
if (dm_request_based(md))
generic_make_request(c);
else {
if (bio_rw_flagged(c, BIO_RW_BARRIER))
if (c->bi_rw & REQ_HARDBARRIER)
process_barrier(md, c);
else
__split_and_process_bio(md, c);

2
drivers/md/linear.c
View File

@ -294,7 +294,7 @@ static int linear_make_request (mddev_t *mddev, struct bio *bio)
dev_info_t *tmp_dev;
sector_t start_sector;
if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) {
if (unlikely(bio->bi_rw & REQ_HARDBARRIER)) {
md_barrier_request(mddev, bio);
return 0;
}

10
drivers/md/md.c
View File

@ -353,7 +353,7 @@ static void md_submit_barrier(struct work_struct *ws)
/* an empty barrier - all done */
bio_endio(bio, 0);
else {
bio->bi_rw &= ~(1<<BIO_RW_BARRIER);
bio->bi_rw &= ~REQ_HARDBARRIER;
if (mddev->pers->make_request(mddev, bio))
generic_make_request(bio);
mddev->barrier = POST_REQUEST_BARRIER;
@ -675,11 +675,11 @@ void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
* if zero is reached.
* If an error occurred, call md_error
*
* As we might need to resubmit the request if BIO_RW_BARRIER
* As we might need to resubmit the request if REQ_HARDBARRIER
* causes ENOTSUPP, we allocate a spare bio...
*/
struct bio *bio = bio_alloc(GFP_NOIO, 1);
int rw = (1<<BIO_RW) | (1<<BIO_RW_SYNCIO) | (1<<BIO_RW_UNPLUG);
int rw = REQ_WRITE | REQ_SYNC | REQ_UNPLUG;
bio->bi_bdev = rdev->bdev;
bio->bi_sector = sector;
@ -691,7 +691,7 @@ void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
atomic_inc(&mddev->pending_writes);
if (!test_bit(BarriersNotsupp, &rdev->flags)) {
struct bio *rbio;
rw |= (1<<BIO_RW_BARRIER);
rw |= REQ_HARDBARRIER;
rbio = bio_clone(bio, GFP_NOIO);
rbio->bi_private = bio;
rbio->bi_end_io = super_written_barrier;
@ -736,7 +736,7 @@ int sync_page_io(struct block_device *bdev, sector_t sector, int size,
struct completion event;
int ret;
rw |= (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG);
rw |= REQ_SYNC | REQ_UNPLUG;
bio->bi_bdev = bdev;
bio->bi_sector = sector;

4
drivers/md/md.h
View File

@ -67,7 +67,7 @@ struct mdk_rdev_s
#define Faulty 1 /* device is known to have a fault */
#define In_sync 2 /* device is in_sync with rest of array */
#define WriteMostly 4 /* Avoid reading if at all possible */
#define BarriersNotsupp 5 /* BIO_RW_BARRIER is not supported */
#define BarriersNotsupp 5 /* REQ_HARDBARRIER is not supported */
#define AllReserved 6 /* If whole device is reserved for
* one array */
#define AutoDetected 7 /* added by auto-detect */
@ -254,7 +254,7 @@ struct mddev_s
* fails. Only supported
*/
struct bio *biolist; /* bios that need to be retried
* because BIO_RW_BARRIER is not supported
* because REQ_HARDBARRIER is not supported
*/
atomic_t recovery_active; /* blocks scheduled, but not written */

8
drivers/md/multipath.c
View File

@ -91,7 +91,7 @@ static void multipath_end_request(struct bio *bio, int error)
if (uptodate)
multipath_end_bh_io(mp_bh, 0);
else if (!bio_rw_flagged(bio, BIO_RW_AHEAD)) {
else if (!(bio->bi_rw & REQ_RAHEAD)) {
/*
* oops, IO error:
*/
@ -142,7 +142,7 @@ static int multipath_make_request(mddev_t *mddev, struct bio * bio)
struct multipath_bh * mp_bh;
struct multipath_info *multipath;
if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) {
if (unlikely(bio->bi_rw & REQ_HARDBARRIER)) {
md_barrier_request(mddev, bio);
return 0;
}
@ -163,7 +163,7 @@ static int multipath_make_request(mddev_t *mddev, struct bio * bio)
mp_bh->bio = *bio;
mp_bh->bio.bi_sector += multipath->rdev->data_offset;
mp_bh->bio.bi_bdev = multipath->rdev->bdev;
mp_bh->bio.bi_rw |= (1 << BIO_RW_FAILFAST_TRANSPORT);
mp_bh->bio.bi_rw |= REQ_FAILFAST_TRANSPORT;
mp_bh->bio.bi_end_io = multipath_end_request;
mp_bh->bio.bi_private = mp_bh;
generic_make_request(&mp_bh->bio);
@ -398,7 +398,7 @@ static void multipathd (mddev_t *mddev)
*bio = *(mp_bh->master_bio);
bio->bi_sector += conf->multipaths[mp_bh->path].rdev->data_offset;
bio->bi_bdev = conf->multipaths[mp_bh->path].rdev->bdev;
bio->bi_rw |= (1 << BIO_RW_FAILFAST_TRANSPORT);
bio->bi_rw |= REQ_FAILFAST_TRANSPORT;
bio->bi_end_io = multipath_end_request;
bio->bi_private = mp_bh;
generic_make_request(bio);

2
drivers/md/raid0.c
View File

@ -483,7 +483,7 @@ static int raid0_make_request(mddev_t *mddev, struct bio *bio)
struct strip_zone *zone;
mdk_rdev_t *tmp_dev;
if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) {
if (unlikely(bio->bi_rw & REQ_HARDBARRIER)) {
md_barrier_request(mddev, bio);
return 0;
}

22
drivers/md/raid1.c
View File

@ -787,7 +787,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
struct bio_list bl;
struct page **behind_pages = NULL;
const int rw = bio_data_dir(bio);
const bool do_sync = bio_rw_flagged(bio, BIO_RW_SYNCIO);
const bool do_sync = (bio->bi_rw & REQ_SYNC);
bool do_barriers;
mdk_rdev_t *blocked_rdev;
@ -822,7 +822,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
finish_wait(&conf->wait_barrier, &w);
}
if (unlikely(!mddev->barriers_work &&
bio_rw_flagged(bio, BIO_RW_BARRIER))) {
(bio->bi_rw & REQ_HARDBARRIER))) {
if (rw == WRITE)
md_write_end(mddev);
bio_endio(bio, -EOPNOTSUPP);
@ -877,7 +877,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
read_bio->bi_sector = r1_bio->sector + mirror->rdev->data_offset;
read_bio->bi_bdev = mirror->rdev->bdev;
read_bio->bi_end_io = raid1_end_read_request;
read_bio->bi_rw = READ | (do_sync << BIO_RW_SYNCIO);
read_bio->bi_rw = READ | do_sync;
read_bio->bi_private = r1_bio;
generic_make_request(read_bio);
@ -959,7 +959,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
atomic_set(&r1_bio->remaining, 0);
atomic_set(&r1_bio->behind_remaining, 0);
do_barriers = bio_rw_flagged(bio, BIO_RW_BARRIER);
do_barriers = bio->bi_rw & REQ_HARDBARRIER;
if (do_barriers)
set_bit(R1BIO_Barrier, &r1_bio->state);
@ -975,8 +975,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
mbio->bi_sector = r1_bio->sector + conf->mirrors[i].rdev->data_offset;
mbio->bi_bdev = conf->mirrors[i].rdev->bdev;
mbio->bi_end_io = raid1_end_write_request;
mbio->bi_rw = WRITE | (do_barriers << BIO_RW_BARRIER) |
(do_sync << BIO_RW_SYNCIO);
mbio->bi_rw = WRITE | do_barriers | do_sync;
mbio->bi_private = r1_bio;
if (behind_pages) {
@ -1633,7 +1632,7 @@ static void raid1d(mddev_t *mddev)
sync_request_write(mddev, r1_bio);
unplug = 1;
} else if (test_bit(R1BIO_BarrierRetry, &r1_bio->state)) {
/* some requests in the r1bio were BIO_RW_BARRIER
/* some requests in the r1bio were REQ_HARDBARRIER
* requests which failed with -EOPNOTSUPP. Hohumm..
* Better resubmit without the barrier.
* We know which devices to resubmit for, because
@ -1641,7 +1640,7 @@ static void raid1d(mddev_t *mddev)
* We already have a nr_pending reference on these rdevs.
*/
int i;
const bool do_sync = bio_rw_flagged(r1_bio->master_bio, BIO_RW_SYNCIO);
const bool do_sync = (r1_bio->master_bio->bi_rw & REQ_SYNC);
clear_bit(R1BIO_BarrierRetry, &r1_bio->state);
clear_bit(R1BIO_Barrier, &r1_bio->state);
for (i=0; i < conf->raid_disks; i++)
@ -1662,8 +1661,7 @@ static void raid1d(mddev_t *mddev)
conf->mirrors[i].rdev->data_offset;
bio->bi_bdev = conf->mirrors[i].rdev->bdev;
bio->bi_end_io = raid1_end_write_request;
bio->bi_rw = WRITE |
(do_sync << BIO_RW_SYNCIO);
bio->bi_rw = WRITE | do_sync;
bio->bi_private = r1_bio;
r1_bio->bios[i] = bio;
generic_make_request(bio);
@ -1698,7 +1696,7 @@ static void raid1d(mddev_t *mddev)
(unsigned long long)r1_bio->sector);
raid_end_bio_io(r1_bio);
} else {
const bool do_sync = bio_rw_flagged(r1_bio->master_bio, BIO_RW_SYNCIO);
const bool do_sync = r1_bio->master_bio->bi_rw & REQ_SYNC;
r1_bio->bios[r1_bio->read_disk] =
mddev->ro ? IO_BLOCKED : NULL;
r1_bio->read_disk = disk;
@ -1715,7 +1713,7 @@ static void raid1d(mddev_t *mddev)
bio->bi_sector = r1_bio->sector + rdev->data_offset;
bio->bi_bdev = rdev->bdev;
bio->bi_end_io = raid1_end_read_request;
bio->bi_rw = READ | (do_sync << BIO_RW_SYNCIO);
bio->bi_rw = READ | do_sync;
bio->bi_private = r1_bio;
unplug = 1;
generic_make_request(bio);

12
drivers/md/raid10.c
View File

@ -799,12 +799,12 @@ static int make_request(mddev_t *mddev, struct bio * bio)
int i;
int chunk_sects = conf->chunk_mask + 1;
const int rw = bio_data_dir(bio);
const bool do_sync = bio_rw_flagged(bio, BIO_RW_SYNCIO);
const bool do_sync = (bio->bi_rw & REQ_SYNC);
struct bio_list bl;
unsigned long flags;
mdk_rdev_t *blocked_rdev;
if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) {
if (unlikely(bio->bi_rw & REQ_HARDBARRIER)) {
md_barrier_request(mddev, bio);
return 0;
}
@ -879,7 +879,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
mirror->rdev->data_offset;
read_bio->bi_bdev = mirror->rdev->bdev;
read_bio->bi_end_io = raid10_end_read_request;
read_bio->bi_rw = READ | (do_sync << BIO_RW_SYNCIO);
read_bio->bi_rw = READ | do_sync;
read_bio->bi_private = r10_bio;
generic_make_request(read_bio);
@ -947,7 +947,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
conf->mirrors[d].rdev->data_offset;
mbio->bi_bdev = conf->mirrors[d].rdev->bdev;
mbio->bi_end_io = raid10_end_write_request;
mbio->bi_rw = WRITE | (do_sync << BIO_RW_SYNCIO);
mbio->bi_rw = WRITE | do_sync;
mbio->bi_private = r10_bio;
atomic_inc(&r10_bio->remaining);
@ -1716,7 +1716,7 @@ static void raid10d(mddev_t *mddev)
raid_end_bio_io(r10_bio);
bio_put(bio);
} else {
const bool do_sync = bio_rw_flagged(r10_bio->master_bio, BIO_RW_SYNCIO);
const bool do_sync = (r10_bio->master_bio->bi_rw & REQ_SYNC);
bio_put(bio);
rdev = conf->mirrors[mirror].rdev;
if (printk_ratelimit())
@ -1730,7 +1730,7 @@ static void raid10d(mddev_t *mddev)
bio->bi_sector = r10_bio->devs[r10_bio->read_slot].addr
+ rdev->data_offset;
bio->bi_bdev = rdev->bdev;
bio->bi_rw = READ | (do_sync << BIO_RW_SYNCIO);
bio->bi_rw = READ | do_sync;
bio->bi_private = r10_bio;
bio->bi_end_io = raid10_end_read_request;
unplug = 1;

2
drivers/md/raid5.c
View File

@ -3958,7 +3958,7 @@ static int make_request(mddev_t *mddev, struct bio * bi)
const int rw = bio_data_dir(bi);
int remaining;
if (unlikely(bio_rw_flagged(bi, BIO_RW_BARRIER))) {
if (unlikely(bi->bi_rw & REQ_HARDBARRIER)) {
/* Drain all pending writes. We only really need
* to ensure they have been submitted, but this is
* easier.

8
drivers/scsi/osd/osd_initiator.c
View File

@ -716,7 +716,7 @@ static int _osd_req_list_objects(struct osd_request *or,
return PTR_ERR(bio);
}
bio->bi_rw &= ~(1 << BIO_RW);
bio->bi_rw &= ~REQ_WRITE;
or->in.bio = bio;
or->in.total_bytes = bio->bi_size;
return 0;
@ -814,7 +814,7 @@ void osd_req_write(struct osd_request *or,
{
_osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, len);
WARN_ON(or->out.bio || or->out.total_bytes);
WARN_ON(0 == bio_rw_flagged(bio, BIO_RW));
WARN_ON(0 == (bio->bi_rw & REQ_WRITE));
or->out.bio = bio;
or->out.total_bytes = len;
}
@ -829,7 +829,7 @@ int osd_req_write_kern(struct osd_request *or,
if (IS_ERR(bio))
return PTR_ERR(bio);
bio->bi_rw |= (1 << BIO_RW); /* FIXME: bio_set_dir() */
bio->bi_rw |= REQ_WRITE; /* FIXME: bio_set_dir() */
osd_req_write(or, obj, offset, bio, len);
return 0;
}
@ -865,7 +865,7 @@ void osd_req_read(struct osd_request *or,
{
_osd_req_encode_common(or, OSD_ACT_READ, obj, offset, len);
WARN_ON(or->in.bio || or->in.total_bytes);
WARN_ON(1 == bio_rw_flagged(bio, BIO_RW));
WARN_ON(1 == (bio->bi_rw & REQ_WRITE));
or->in.bio = bio;
or->in.total_bytes = len;
}

5
fs/bio.c
View File

@ -843,7 +843,8 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
if (!bio)
goto out_bmd;
bio->bi_rw |= (!write_to_vm << BIO_RW);
if (!write_to_vm)
bio->bi_rw |= REQ_WRITE;
ret = 0;
@ -1024,7 +1025,7 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
* set data direction, and check if mapped pages need bouncing
*/
if (!write_to_vm)
bio->bi_rw |= (1 << BIO_RW);
bio->bi_rw |= REQ_WRITE;
bio->bi_bdev = bdev;
bio->bi_flags |= (1 << BIO_USER_MAPPED);

8
fs/btrfs/disk-io.c
View File

@ -480,7 +480,7 @@ static void end_workqueue_bio(struct bio *bio, int err)
end_io_wq->work.func = end_workqueue_fn;
end_io_wq->work.flags = 0;
if (bio->bi_rw & (1 << BIO_RW)) {
if (bio->bi_rw & REQ_WRITE) {
if (end_io_wq->metadata)
btrfs_queue_worker(&fs_info->endio_meta_write_workers,
&end_io_wq->work);
@ -604,7 +604,7 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
atomic_inc(&fs_info->nr_async_submits);
if (rw & (1 << BIO_RW_SYNCIO))
if (rw & REQ_SYNC)
btrfs_set_work_high_prio(&async->work);
btrfs_queue_worker(&fs_info->workers, &async->work);
@ -668,7 +668,7 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
bio, 1);
BUG_ON(ret);
if (!(rw & (1 << BIO_RW))) {
if (!(rw & REQ_WRITE)) {
/*
* called for a read, do the setup so that checksum validation
* can happen in the async kernel threads
@ -1427,7 +1427,7 @@ static void end_workqueue_fn(struct btrfs_work *work)
* ram and up to date before trying to verify things. For
* blocksize <= pagesize, it is basically a noop
*/
if (!(bio->bi_rw & (1 << BIO_RW)) && end_io_wq->metadata &&
if (!(bio->bi_rw & REQ_WRITE) && end_io_wq->metadata &&
!bio_ready_for_csum(bio)) {
btrfs_queue_worker(&fs_info->endio_meta_workers,
&end_io_wq->work);

6
fs/btrfs/inode.c
View File

@ -1429,7 +1429,7 @@ static int btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
BUG_ON(ret);
if (!(rw & (1 << BIO_RW))) {
if (!(rw & REQ_WRITE)) {
if (bio_flags & EXTENT_BIO_COMPRESSED) {
return btrfs_submit_compressed_read(inode, bio,
mirror_num, bio_flags);
@ -1841,7 +1841,7 @@ static int btrfs_io_failed_hook(struct bio *failed_bio,
bio->bi_size = 0;
bio_add_page(bio, page, failrec->len, start - page_offset(page));
if (failed_bio->bi_rw & (1 << BIO_RW))
if (failed_bio->bi_rw & REQ_WRITE)
rw = WRITE;
else
rw = READ;
@ -5642,7 +5642,7 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
struct bio_vec *bvec = bio->bi_io_vec;
u64 start;
int skip_sum;
int write = rw & (1 << BIO_RW);
int write = rw & REQ_WRITE;
int ret = 0;
skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;

18
fs/btrfs/volumes.c
View File

@ -258,7 +258,7 @@ loop_lock:
BUG_ON(atomic_read(&cur->bi_cnt) == 0);
if (bio_rw_flagged(cur, BIO_RW_SYNCIO))
if (cur->bi_rw & REQ_SYNC)
num_sync_run++;
submit_bio(cur->bi_rw, cur);
@ -2651,7 +2651,7 @@ static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
int max_errors = 0;
struct btrfs_multi_bio *multi = NULL;
if (multi_ret && !(rw & (1 << BIO_RW)))
if (multi_ret && !(rw & REQ_WRITE))
stripes_allocated = 1;
again:
if (multi_ret) {
@ -2687,7 +2687,7 @@ again:
mirror_num = 0;
/* if our multi bio struct is too small, back off and try again */
if (rw & (1 << BIO_RW)) {
if (rw & REQ_WRITE) {
if (map->type & (BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_DUP)) {
stripes_required = map->num_stripes;
@ -2697,7 +2697,7 @@ again:
max_errors = 1;
}
}
if (multi_ret && (rw & (1 << BIO_RW)) &&
if (multi_ret && (rw & REQ_WRITE) &&
stripes_allocated < stripes_required) {
stripes_allocated = map->num_stripes;
free_extent_map(em);
@ -2733,7 +2733,7 @@ again:
num_stripes = 1;
stripe_index = 0;
if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
if (unplug_page || (rw & (1 << BIO_RW)))
if (unplug_page || (rw & REQ_WRITE))
num_stripes = map->num_stripes;
else if (mirror_num)
stripe_index = mirror_num - 1;
@ -2744,7 +2744,7 @@ again:
}
} else if (map->type & BTRFS_BLOCK_GROUP_DUP) {
if (rw & (1 << BIO_RW))
if (rw & REQ_WRITE)
num_stripes = map->num_stripes;
else if (mirror_num)
stripe_index = mirror_num - 1;
@ -2755,7 +2755,7 @@ again:
stripe_index = do_div(stripe_nr, factor);
stripe_index *= map->sub_stripes;
if (unplug_page || (rw & (1 << BIO_RW)))
if (unplug_page || (rw & REQ_WRITE))
num_stripes = map->sub_stripes;
else if (mirror_num)
stripe_index += mirror_num - 1;
@ -2945,7 +2945,7 @@ static noinline int schedule_bio(struct btrfs_root *root,
struct btrfs_pending_bios *pending_bios;
/* don't bother with additional async steps for reads, right now */
if (!(rw & (1 << BIO_RW))) {
if (!(rw & REQ_WRITE)) {
bio_get(bio);
submit_bio(rw, bio);
bio_put(bio);
@ -2964,7 +2964,7 @@ static noinline int schedule_bio(struct btrfs_root *root,
bio->bi_rw |= rw;
spin_lock(&device->io_lock);
if (bio_rw_flagged(bio, BIO_RW_SYNCIO))
if (bio->bi_rw & REQ_SYNC)
pending_bios = &device->pending_sync_bios;
else
pending_bios = &device->pending_bios;

2
fs/exofs/ios.c
View File

@ -599,7 +599,7 @@ static int _sbi_write_mirror(struct exofs_io_state *ios, int cur_comp)
} else {
bio = master_dev->bio;
/* FIXME: bio_set_dir() */
bio->bi_rw |= (1 << BIO_RW);
bio->bi_rw |= REQ_WRITE;
}
osd_req_write(or, &ios->obj, per_dev->offset, bio,

4
fs/gfs2/log.c
View File

@ -595,7 +595,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull)
if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags))
goto skip_barrier;
get_bh(bh);
submit_bh(WRITE_BARRIER | (1 << BIO_RW_META), bh);
submit_bh(WRITE_BARRIER | REQ_META, bh);
wait_on_buffer(bh);
if (buffer_eopnotsupp(bh)) {
clear_buffer_eopnotsupp(bh);
@ -605,7 +605,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull)
lock_buffer(bh);
skip_barrier:
get_bh(bh);
submit_bh(WRITE_SYNC | (1 << BIO_RW_META), bh);
submit_bh(WRITE_SYNC | REQ_META, bh);
wait_on_buffer(bh);
}
if (!buffer_uptodate(bh))

8
fs/gfs2/meta_io.c
View File

@ -36,8 +36,8 @@ static int gfs2_aspace_writepage(struct page *page, struct writeback_control *wb
{
struct buffer_head *bh, *head;
int nr_underway = 0;
int write_op = (1 << BIO_RW_META) | ((wbc->sync_mode == WB_SYNC_ALL ?
WRITE_SYNC_PLUG : WRITE));
int write_op = REQ_META |
(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC_PLUG : WRITE);
BUG_ON(!PageLocked(page));
BUG_ON(!page_has_buffers(page));
@ -225,7 +225,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags,
}
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
submit_bh(READ_SYNC | (1 << BIO_RW_META), bh);
submit_bh(READ_SYNC | REQ_META, bh);
if (!(flags & DIO_WAIT))
return 0;
@ -432,7 +432,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen)
if (buffer_uptodate(first_bh))
goto out;
if (!buffer_locked(first_bh))
ll_rw_block(READ_SYNC | (1 << BIO_RW_META), 1, &first_bh);
ll_rw_block(READ_SYNC | REQ_META, 1, &first_bh);
dblock++;
extlen--;

2
fs/gfs2/ops_fstype.c
View File

@ -275,7 +275,7 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector)
bio->bi_end_io = end_bio_io_page;
bio->bi_private = page;
submit_bio(READ_SYNC | (1 << BIO_RW_META), bio);
submit_bio(READ_SYNC | REQ_META, bio);
wait_on_page_locked(page);
bio_put(bio);
if (!PageUptodate(page)) {

2
fs/nilfs2/segbuf.c
View File

@ -508,7 +508,7 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
* Last BIO is always sent through the following
* submission.
*/
rw |= (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG);
rw |= REQ_SYNC | REQ_UNPLUG;
res = nilfs_segbuf_submit_bio(segbuf, &wi, rw);
}

123
include/linux/bio.h
View File

@ -138,55 +138,83 @@ struct bio {
#define BIO_POOL_IDX(bio) ((bio)->bi_flags >> BIO_POOL_OFFSET)
/*
* bio bi_rw flags
*
* bit 0 -- data direction
* If not set, bio is a read from device. If set, it's a write to device.
* bit 1 -- fail fast device errors
* bit 2 -- fail fast transport errors
* bit 3 -- fail fast driver errors
* bit 4 -- rw-ahead when set
* bit 5 -- barrier
* Insert a serialization point in the IO queue, forcing previously
* submitted IO to be completed before this one is issued.
* bit 6 -- synchronous I/O hint.
* bit 7 -- Unplug the device immediately after submitting this bio.
* bit 8 -- metadata request
* Used for tracing to differentiate metadata and data IO. May also
* get some preferential treatment in the IO scheduler
* bit 9 -- discard sectors
* Informs the lower level device that this range of sectors is no longer
* used by the file system and may thus be freed by the device. Used
* for flash based storage.
* Don't want driver retries for any fast fail whatever the reason.
* bit 10 -- Tell the IO scheduler not to wait for more requests after this
one has been submitted, even if it is a SYNC request.
* Request flags. For use in the cmd_flags field of struct request, and in
* bi_rw of struct bio. Note that some flags are only valid in either one.
*/
enum bio_rw_flags {
BIO_RW,
BIO_RW_FAILFAST_DEV,
BIO_RW_FAILFAST_TRANSPORT,
BIO_RW_FAILFAST_DRIVER,
/* above flags must match REQ_* */
BIO_RW_AHEAD,
BIO_RW_BARRIER,
BIO_RW_SYNCIO,
BIO_RW_UNPLUG,
BIO_RW_META,
BIO_RW_DISCARD,
BIO_RW_NOIDLE,
enum rq_flag_bits {
/* common flags */
__REQ_WRITE, /* not set, read. set, write */
__REQ_FAILFAST_DEV, /* no driver retries of device errors */
__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
__REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
__REQ_HARDBARRIER, /* may not be passed by drive either */
__REQ_SYNC, /* request is sync (sync write or read) */
__REQ_META, /* metadata io request */
__REQ_DISCARD, /* request to discard sectors */
__REQ_NOIDLE, /* don't anticipate more IO after this one */
/* bio only flags */
__REQ_UNPLUG, /* unplug the immediately after submission */
__REQ_RAHEAD, /* read ahead, can fail anytime */
/* request only flags */
__REQ_SORTED, /* elevator knows about this request */
__REQ_SOFTBARRIER, /* may not be passed by ioscheduler */
__REQ_FUA, /* forced unit access */
__REQ_NOMERGE, /* don't touch this for merging */
__REQ_STARTED, /* drive already may have started this one */
__REQ_DONTPREP, /* don't call prep for this one */
__REQ_QUEUED, /* uses queueing */
__REQ_ELVPRIV, /* elevator private data attached */
__REQ_FAILED, /* set if the request failed */
__REQ_QUIET, /* don't worry about errors */
__REQ_PREEMPT, /* set for "ide_preempt" requests */
__REQ_ORDERED_COLOR, /* is before or after barrier */
__REQ_ALLOCED, /* request came from our alloc pool */
__REQ_COPY_USER, /* contains copies of user pages */
__REQ_INTEGRITY, /* integrity metadata has been remapped */
__REQ_IO_STAT, /* account I/O stat */
__REQ_MIXED_MERGE, /* merge of different types, fail separately */
__REQ_NR_BITS, /* stops here */
};
/*
* First four bits must match between bio->bi_rw and rq->cmd_flags, make
* that explicit here.
*/
#define BIO_RW_RQ_MASK 0xf
#define REQ_WRITE (1 << __REQ_WRITE)
#define REQ_FAILFAST_DEV (1 << __REQ_FAILFAST_DEV)
#define REQ_FAILFAST_TRANSPORT (1 << __REQ_FAILFAST_TRANSPORT)
#define REQ_FAILFAST_DRIVER (1 << __REQ_FAILFAST_DRIVER)
#define REQ_HARDBARRIER (1 << __REQ_HARDBARRIER)
#define REQ_SYNC (1 << __REQ_SYNC)
#define REQ_META (1 << __REQ_META)
#define REQ_DISCARD (1 << __REQ_DISCARD)
#define REQ_NOIDLE (1 << __REQ_NOIDLE)
static inline bool bio_rw_flagged(struct bio *bio, enum bio_rw_flags flag)
{
return (bio->bi_rw & (1 << flag)) != 0;
}
#define REQ_FAILFAST_MASK \
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
#define REQ_COMMON_MASK \
(REQ_WRITE | REQ_FAILFAST_MASK | REQ_HARDBARRIER | REQ_SYNC | \
REQ_META| REQ_DISCARD | REQ_NOIDLE)
#define REQ_UNPLUG (1 << __REQ_UNPLUG)
#define REQ_RAHEAD (1 << __REQ_RAHEAD)
#define REQ_SORTED (1 << __REQ_SORTED)
#define REQ_SOFTBARRIER (1 << __REQ_SOFTBARRIER)
#define REQ_FUA (1 << __REQ_FUA)
#define REQ_NOMERGE (1 << __REQ_NOMERGE)
#define REQ_STARTED (1 << __REQ_STARTED)
#define REQ_DONTPREP (1 << __REQ_DONTPREP)
#define REQ_QUEUED (1 << __REQ_QUEUED)
#define REQ_ELVPRIV (1 << __REQ_ELVPRIV)
#define REQ_FAILED (1 << __REQ_FAILED)
#define REQ_QUIET (1 << __REQ_QUIET)
#define REQ_PREEMPT (1 << __REQ_PREEMPT)
#define REQ_ORDERED_COLOR (1 << __REQ_ORDERED_COLOR)
#define REQ_ALLOCED (1 << __REQ_ALLOCED)
#define REQ_COPY_USER (1 << __REQ_COPY_USER)
#define REQ_INTEGRITY (1 << __REQ_INTEGRITY)
#define REQ_IO_STAT (1 << __REQ_IO_STAT)
#define REQ_MIXED_MERGE (1 << __REQ_MIXED_MERGE)
/*
* upper 16 bits of bi_rw define the io priority of this bio
@ -211,7 +239,10 @@ static inline bool bio_rw_flagged(struct bio *bio, enum bio_rw_flags flag)
#define bio_offset(bio) bio_iovec((bio))->bv_offset
#define bio_segments(bio) ((bio)->bi_vcnt - (bio)->bi_idx)
#define bio_sectors(bio) ((bio)->bi_size >> 9)
#define bio_empty_barrier(bio) (bio_rw_flagged(bio, BIO_RW_BARRIER) && !bio_has_data(bio) && !bio_rw_flagged(bio, BIO_RW_DISCARD))
#define bio_empty_barrier(bio) \
((bio->bi_rw & REQ_HARDBARRIER) && \
!bio_has_data(bio) && \
!(bio->bi_rw & REQ_DISCARD))
static inline unsigned int bio_cur_bytes(struct bio *bio)
{

66
include/linux/blkdev.h
View File

@ -84,70 +84,6 @@ enum {
REQ_LB_OP_FLUSH = 0x41, /* flush request */
};
/*
* request type modified bits. first four bits match BIO_RW* bits, important
*/
enum rq_flag_bits {
__REQ_RW, /* not set, read. set, write */
__REQ_FAILFAST_DEV, /* no driver retries of device errors */
__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
__REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
/* above flags must match BIO_RW_* */
__REQ_DISCARD, /* request to discard sectors */
__REQ_SORTED, /* elevator knows about this request */
__REQ_SOFTBARRIER, /* may not be passed by ioscheduler */
__REQ_HARDBARRIER, /* may not be passed by drive either */
__REQ_FUA, /* forced unit access */
__REQ_NOMERGE, /* don't touch this for merging */
__REQ_STARTED, /* drive already may have started this one */
__REQ_DONTPREP, /* don't call prep for this one */
__REQ_QUEUED, /* uses queueing */
__REQ_ELVPRIV, /* elevator private data attached */
__REQ_FAILED, /* set if the request failed */
__REQ_QUIET, /* don't worry about errors */
__REQ_PREEMPT, /* set for "ide_preempt" requests */
__REQ_ORDERED_COLOR, /* is before or after barrier */
__REQ_RW_SYNC, /* request is sync (sync write or read) */
__REQ_ALLOCED, /* request came from our alloc pool */
__REQ_RW_META, /* metadata io request */
__REQ_COPY_USER, /* contains copies of user pages */
__REQ_INTEGRITY, /* integrity metadata has been remapped */
__REQ_NOIDLE, /* Don't anticipate more IO after this one */
__REQ_IO_STAT, /* account I/O stat */
__REQ_MIXED_MERGE, /* merge of different types, fail separately */
__REQ_NR_BITS, /* stops here */
};
#define REQ_RW (1 << __REQ_RW)
#define REQ_FAILFAST_DEV (1 << __REQ_FAILFAST_DEV)
#define REQ_FAILFAST_TRANSPORT (1 << __REQ_FAILFAST_TRANSPORT)
#define REQ_FAILFAST_DRIVER (1 << __REQ_FAILFAST_DRIVER)
#define REQ_DISCARD (1 << __REQ_DISCARD)
#define REQ_SORTED (1 << __REQ_SORTED)
#define REQ_SOFTBARRIER (1 << __REQ_SOFTBARRIER)
#define REQ_HARDBARRIER (1 << __REQ_HARDBARRIER)
#define REQ_FUA (1 << __REQ_FUA)
#define REQ_NOMERGE (1 << __REQ_NOMERGE)
#define REQ_STARTED (1 << __REQ_STARTED)
#define REQ_DONTPREP (1 << __REQ_DONTPREP)
#define REQ_QUEUED (1 << __REQ_QUEUED)
#define REQ_ELVPRIV (1 << __REQ_ELVPRIV)
#define REQ_FAILED (1 << __REQ_FAILED)
#define REQ_QUIET (1 << __REQ_QUIET)
#define REQ_PREEMPT (1 << __REQ_PREEMPT)
#define REQ_ORDERED_COLOR (1 << __REQ_ORDERED_COLOR)
#define REQ_RW_SYNC (1 << __REQ_RW_SYNC)
#define REQ_ALLOCED (1 << __REQ_ALLOCED)
#define REQ_RW_META (1 << __REQ_RW_META)
#define REQ_COPY_USER (1 << __REQ_COPY_USER)
#define REQ_INTEGRITY (1 << __REQ_INTEGRITY)
#define REQ_NOIDLE (1 << __REQ_NOIDLE)
#define REQ_IO_STAT (1 << __REQ_IO_STAT)
#define REQ_MIXED_MERGE (1 << __REQ_MIXED_MERGE)
#define REQ_FAILFAST_MASK (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | \
REQ_FAILFAST_DRIVER)
#define BLK_MAX_CDB 16
/*
@ -631,7 +567,7 @@ enum {
*/
static inline bool rw_is_sync(unsigned int rw_flags)
{
return !(rw_flags & REQ_RW) || (rw_flags & REQ_RW_SYNC);
return !(rw_flags & REQ_WRITE) || (rw_flags & REQ_SYNC);
}
static inline bool rq_is_sync(struct request *rq)

38
include/linux/fs.h
View File

@ -144,29 +144,31 @@ struct inodes_stat_t {
* of this IO.
*
*/
#define RW_MASK 1
#define RWA_MASK 2
#define READ 0
#define WRITE 1
#define READA 2 /* read-ahead - don't block if no resources */
#define SWRITE 3 /* for ll_rw_block() - wait for buffer lock */
#define READ_SYNC (READ | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG))
#define READ_META (READ | (1 << BIO_RW_META))
#define WRITE_SYNC_PLUG (WRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE))
#define WRITE_SYNC (WRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG))
#define WRITE_ODIRECT_PLUG (WRITE | (1 << BIO_RW_SYNCIO))
#define WRITE_META (WRITE | (1 << BIO_RW_META))
#define SWRITE_SYNC_PLUG \
(SWRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE))
#define SWRITE_SYNC (SWRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG))
#define WRITE_BARRIER (WRITE_SYNC | (1 << BIO_RW_BARRIER))
#define RW_MASK 1
#define RWA_MASK 2
#define READ 0
#define WRITE 1
#define READA 2 /* readahead - don't block if no resources */
#define SWRITE 3 /* for ll_rw_block() - wait for buffer lock */
#define READ_SYNC (READ | REQ_SYNC | REQ_UNPLUG)
#define READ_META (READ | REQ_META)
#define WRITE_SYNC_PLUG (WRITE | REQ_SYNC | REQ_NOIDLE)
#define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG)
#define WRITE_ODIRECT_PLUG (WRITE | REQ_SYNC)
#define WRITE_META (WRITE | REQ_META)
#define WRITE_BARRIER (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
REQ_HARDBARRIER)
#define SWRITE_SYNC_PLUG (SWRITE | REQ_SYNC | REQ_NOIDLE)
#define SWRITE_SYNC (SWRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG)
/*
* These aren't really reads or writes, they pass down information about
* parts of device that are now unused by the file system.
*/
#define DISCARD_NOBARRIER (WRITE | (1 << BIO_RW_DISCARD))
#define DISCARD_BARRIER (DISCARD_NOBARRIER | (1 << BIO_RW_BARRIER))
#define DISCARD_NOBARRIER (WRITE | REQ_DISCARD)
#define DISCARD_BARRIER (WRITE | REQ_DISCARD | REQ_HARDBARRIER)
#define SEL_IN 1
#define SEL_OUT 2

2
kernel/power/block_io.c
View File

@ -28,7 +28,7 @@
static int submit(int rw, struct block_device *bdev, sector_t sector,
struct page *page, struct bio **bio_chain)
{
const int bio_rw = rw | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG);
const int bio_rw = rw | REQ_SYNC | REQ_UNPLUG;
struct bio *bio;
bio = bio_alloc(__GFP_WAIT | __GFP_HIGH, 1);

27
kernel/trace/blktrace.c
View File

@ -169,9 +169,12 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector,
static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
BLK_TC_ACT(BLK_TC_WRITE) };
#define BLK_TC_HARDBARRIER BLK_TC_BARRIER
#define BLK_TC_RAHEAD BLK_TC_AHEAD
/* The ilog2() calls fall out because they're constant */
#define MASK_TC_BIT(rw, __name) ((rw & (1 << BIO_RW_ ## __name)) << \
(ilog2(BLK_TC_ ## __name) + BLK_TC_SHIFT - BIO_RW_ ## __name))
#define MASK_TC_BIT(rw, __name) ((rw & REQ_ ## __name) << \
(ilog2(BLK_TC_ ## __name) + BLK_TC_SHIFT - __REQ_ ## __name))
/*
* The worker for the various blk_add_trace*() types. Fills out a
@ -194,9 +197,9 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
return;
what |= ddir_act[rw & WRITE];
what |= MASK_TC_BIT(rw, BARRIER);
what |= MASK_TC_BIT(rw, SYNCIO);
what |= MASK_TC_BIT(rw, AHEAD);
what |= MASK_TC_BIT(rw, HARDBARRIER);
what |= MASK_TC_BIT(rw, SYNC);
what |= MASK_TC_BIT(rw, RAHEAD);
what |= MASK_TC_BIT(rw, META);
what |= MASK_TC_BIT(rw, DISCARD);
@ -662,7 +665,7 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
return;
if (rq->cmd_flags & REQ_DISCARD)
rw |= (1 << BIO_RW_DISCARD);
rw |= REQ_DISCARD;
if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
what |= BLK_TC_ACT(BLK_TC_PC);
@ -1755,20 +1758,20 @@ void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
if (rw & WRITE)
rwbs[i++] = 'W';
else if (rw & 1 << BIO_RW_DISCARD)
else if (rw & REQ_DISCARD)
rwbs[i++] = 'D';
else if (bytes)
rwbs[i++] = 'R';
else
rwbs[i++] = 'N';
if (rw & 1 << BIO_RW_AHEAD)
if (rw & REQ_RAHEAD)
rwbs[i++] = 'A';
if (rw & 1 << BIO_RW_BARRIER)
if (rw & REQ_HARDBARRIER)
rwbs[i++] = 'B';
if (rw & 1 << BIO_RW_SYNCIO)
if (rw & REQ_SYNC)
rwbs[i++] = 'S';
if (rw & 1 << BIO_RW_META)
if (rw & REQ_META)
rwbs[i++] = 'M';
rwbs[i] = '\0';
@ -1780,7 +1783,7 @@ void blk_fill_rwbs_rq(char *rwbs, struct request *rq)
int bytes;
if (rq->cmd_flags & REQ_DISCARD)
rw |= (1 << BIO_RW_DISCARD);
rw |= REQ_DISCARD;
bytes = blk_rq_bytes(rq);

2
mm/page_io.c
View File

@ -106,7 +106,7 @@ int swap_writepage(struct page *page, struct writeback_control *wbc)
goto out;
}
if (wbc->sync_mode == WB_SYNC_ALL)
rw |= (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG);
rw |= REQ_SYNC | REQ_UNPLUG;
count_vm_event(PSWPOUT);
set_page_writeback(page);
unlock_page(page);