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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:55:15 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:55:15 -0700 |
commit | 355bbd8cb82e60a592f6cd86ce6dbe5677615cf4 (patch) | |
tree | 23678e50ad4687f1656edc972388ee8014e7b89d /drivers/md | |
parent | 39695224bd84dc4be29abad93a0ec232a16fc519 (diff) | |
parent | 746cd1e7e4a555ddaee53b19a46e05c9c61eaf09 (diff) | |
download | linux-3.10-355bbd8cb82e60a592f6cd86ce6dbe5677615cf4.tar.gz linux-3.10-355bbd8cb82e60a592f6cd86ce6dbe5677615cf4.tar.bz2 linux-3.10-355bbd8cb82e60a592f6cd86ce6dbe5677615cf4.zip |
Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block: (29 commits)
block: use blkdev_issue_discard in blk_ioctl_discard
Make DISCARD_BARRIER and DISCARD_NOBARRIER writes instead of reads
block: don't assume device has a request list backing in nr_requests store
block: Optimal I/O limit wrapper
cfq: choose a new next_req when a request is dispatched
Seperate read and write statistics of in_flight requests
aoe: end barrier bios with EOPNOTSUPP
block: trace bio queueing trial only when it occurs
block: enable rq CPU completion affinity by default
cfq: fix the log message after dispatched a request
block: use printk_once
cciss: memory leak in cciss_init_one()
splice: update mtime and atime on files
block: make blk_iopoll_prep_sched() follow normal 0/1 return convention
cfq-iosched: get rid of must_alloc flag
block: use interrupts disabled version of raise_softirq_irqoff()
block: fix comment in blk-iopoll.c
block: adjust default budget for blk-iopoll
block: fix long lines in block/blk-iopoll.c
block: add blk-iopoll, a NAPI like approach for block devices
...
Diffstat (limited to 'drivers/md')
-rw-r--r-- | drivers/md/dm-raid1.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-stripe.c | 4 | ||||
-rw-r--r-- | drivers/md/dm.c | 28 | ||||
-rw-r--r-- | drivers/md/linear.c | 2 | ||||
-rw-r--r-- | drivers/md/multipath.c | 4 | ||||
-rw-r--r-- | drivers/md/raid0.c | 2 | ||||
-rw-r--r-- | drivers/md/raid1.c | 14 | ||||
-rw-r--r-- | drivers/md/raid10.c | 6 | ||||
-rw-r--r-- | drivers/md/raid5.c | 2 |
9 files changed, 35 insertions, 29 deletions
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 33f179e66bf..cc9dc79b078 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -1129,7 +1129,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, if (error == -EOPNOTSUPP) goto out; - if ((error == -EWOULDBLOCK) && bio_rw_ahead(bio)) + if ((error == -EWOULDBLOCK) && bio_rw_flagged(bio, BIO_RW_AHEAD)) goto out; if (unlikely(error)) { diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 3e563d25173..e0efc1adcaf 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -285,7 +285,7 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, if (!error) return 0; /* I/O complete */ - if ((error == -EWOULDBLOCK) && bio_rw_ahead(bio)) + if ((error == -EWOULDBLOCK) && bio_rw_flagged(bio, BIO_RW_AHEAD)) return error; if (error == -EOPNOTSUPP) @@ -336,7 +336,7 @@ static void stripe_io_hints(struct dm_target *ti, unsigned chunk_size = (sc->chunk_mask + 1) << 9; blk_limits_io_min(limits, chunk_size); - limits->io_opt = chunk_size * sc->stripes; + blk_limits_io_opt(limits, chunk_size * sc->stripes); } static struct target_type stripe_target = { diff --git a/drivers/md/dm.c b/drivers/md/dm.c index b4845b14740..eee28fac210 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -130,7 +130,7 @@ struct mapped_device { /* * A list of ios that arrived while we were suspended. */ - atomic_t pending; + atomic_t pending[2]; wait_queue_head_t wait; struct work_struct work; struct bio_list deferred; @@ -453,13 +453,14 @@ static void start_io_acct(struct dm_io *io) { struct mapped_device *md = io->md; int cpu; + int rw = bio_data_dir(io->bio); io->start_time = jiffies; cpu = part_stat_lock(); part_round_stats(cpu, &dm_disk(md)->part0); part_stat_unlock(); - dm_disk(md)->part0.in_flight = atomic_inc_return(&md->pending); + dm_disk(md)->part0.in_flight[rw] = atomic_inc_return(&md->pending[rw]); } static void end_io_acct(struct dm_io *io) @@ -479,8 +480,9 @@ static void end_io_acct(struct dm_io *io) * After this is decremented the bio must not be touched if it is * a barrier. */ - dm_disk(md)->part0.in_flight = pending = - atomic_dec_return(&md->pending); + dm_disk(md)->part0.in_flight[rw] = pending = + atomic_dec_return(&md->pending[rw]); + pending += atomic_read(&md->pending[rw^0x1]); /* nudge anyone waiting on suspend queue */ if (!pending) @@ -586,7 +588,7 @@ static void dec_pending(struct dm_io *io, int error) */ spin_lock_irqsave(&md->deferred_lock, flags); if (__noflush_suspending(md)) { - if (!bio_barrier(io->bio)) + if (!bio_rw_flagged(io->bio, BIO_RW_BARRIER)) bio_list_add_head(&md->deferred, io->bio); } else @@ -598,7 +600,7 @@ static void dec_pending(struct dm_io *io, int error) io_error = io->error; bio = io->bio; - if (bio_barrier(bio)) { + if (bio_rw_flagged(bio, BIO_RW_BARRIER)) { /* * There can be just one barrier request so we use * a per-device variable for error reporting. @@ -1209,7 +1211,7 @@ static void __split_and_process_bio(struct mapped_device *md, struct bio *bio) ci.map = dm_get_table(md); if (unlikely(!ci.map)) { - if (!bio_barrier(bio)) + if (!bio_rw_flagged(bio, BIO_RW_BARRIER)) bio_io_error(bio); else if (!md->barrier_error) @@ -1321,7 +1323,7 @@ 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_barrier(bio))) { + unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) { up_read(&md->io_lock); if (unlikely(test_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags)) && @@ -1344,7 +1346,7 @@ static int dm_make_request(struct request_queue *q, struct bio *bio) { struct mapped_device *md = q->queuedata; - if (unlikely(bio_barrier(bio))) { + if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) { bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -1785,7 +1787,8 @@ static struct mapped_device *alloc_dev(int minor) if (!md->disk) goto bad_disk; - atomic_set(&md->pending, 0); + atomic_set(&md->pending[0], 0); + atomic_set(&md->pending[1], 0); init_waitqueue_head(&md->wait); INIT_WORK(&md->work, dm_wq_work); init_waitqueue_head(&md->eventq); @@ -2088,7 +2091,8 @@ static int dm_wait_for_completion(struct mapped_device *md, int interruptible) break; } spin_unlock_irqrestore(q->queue_lock, flags); - } else if (!atomic_read(&md->pending)) + } else if (!atomic_read(&md->pending[0]) && + !atomic_read(&md->pending[1])) break; if (interruptible == TASK_INTERRUPTIBLE && @@ -2164,7 +2168,7 @@ static void dm_wq_work(struct work_struct *work) if (dm_request_based(md)) generic_make_request(c); else { - if (bio_barrier(c)) + if (bio_rw_flagged(c, BIO_RW_BARRIER)) process_barrier(md, c); else __split_and_process_bio(md, c); diff --git a/drivers/md/linear.c b/drivers/md/linear.c index 5fe39c2a3d2..ea484290544 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -288,7 +288,7 @@ static int linear_make_request (struct request_queue *q, struct bio *bio) sector_t start_sector; int cpu; - if (unlikely(bio_barrier(bio))) { + if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) { bio_endio(bio, -EOPNOTSUPP); return 0; } diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 7140909f666..89e76819f61 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -90,7 +90,7 @@ static void multipath_end_request(struct bio *bio, int error) if (uptodate) multipath_end_bh_io(mp_bh, 0); - else if (!bio_rw_ahead(bio)) { + else if (!bio_rw_flagged(bio, BIO_RW_AHEAD)) { /* * oops, IO error: */ @@ -144,7 +144,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio) const int rw = bio_data_dir(bio); int cpu; - if (unlikely(bio_barrier(bio))) { + if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) { bio_endio(bio, -EOPNOTSUPP); return 0; } diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 898e2bdfee4..f845ed98fec 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -448,7 +448,7 @@ static int raid0_make_request(struct request_queue *q, struct bio *bio) const int rw = bio_data_dir(bio); int cpu; - if (unlikely(bio_barrier(bio))) { + if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) { bio_endio(bio, -EOPNOTSUPP); return 0; } diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 8726fd7ebce..ff7ed333599 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -782,8 +782,9 @@ static int make_request(struct request_queue *q, struct bio * bio) struct bio_list bl; struct page **behind_pages = NULL; const int rw = bio_data_dir(bio); - const int do_sync = bio_sync(bio); - int cpu, do_barriers; + const bool do_sync = bio_rw_flagged(bio, BIO_RW_SYNCIO); + int cpu; + bool do_barriers; mdk_rdev_t *blocked_rdev; /* @@ -797,7 +798,8 @@ static int make_request(struct request_queue *q, struct bio * bio) md_write_start(mddev, bio); /* wait on superblock update early */ - if (unlikely(!mddev->barriers_work && bio_barrier(bio))) { + if (unlikely(!mddev->barriers_work && + bio_rw_flagged(bio, BIO_RW_BARRIER))) { if (rw == WRITE) md_write_end(mddev); bio_endio(bio, -EOPNOTSUPP); @@ -925,7 +927,7 @@ static int make_request(struct request_queue *q, struct bio * bio) atomic_set(&r1_bio->remaining, 0); atomic_set(&r1_bio->behind_remaining, 0); - do_barriers = bio_barrier(bio); + do_barriers = bio_rw_flagged(bio, BIO_RW_BARRIER); if (do_barriers) set_bit(R1BIO_Barrier, &r1_bio->state); @@ -1600,7 +1602,7 @@ static void raid1d(mddev_t *mddev) * We already have a nr_pending reference on these rdevs. */ int i; - const int do_sync = bio_sync(r1_bio->master_bio); + const bool do_sync = bio_rw_flagged(r1_bio->master_bio, BIO_RW_SYNCIO); clear_bit(R1BIO_BarrierRetry, &r1_bio->state); clear_bit(R1BIO_Barrier, &r1_bio->state); for (i=0; i < conf->raid_disks; i++) @@ -1654,7 +1656,7 @@ static void raid1d(mddev_t *mddev) (unsigned long long)r1_bio->sector); raid_end_bio_io(r1_bio); } else { - const int do_sync = bio_sync(r1_bio->master_bio); + const bool do_sync = bio_rw_flagged(r1_bio->master_bio, BIO_RW_SYNCIO); r1_bio->bios[r1_bio->read_disk] = mddev->ro ? IO_BLOCKED : NULL; r1_bio->read_disk = disk; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 3d9020cf6f6..d0a2152e064 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -796,12 +796,12 @@ static int make_request(struct request_queue *q, struct bio * bio) int i; int chunk_sects = conf->chunk_mask + 1; const int rw = bio_data_dir(bio); - const int do_sync = bio_sync(bio); + const bool do_sync = bio_rw_flagged(bio, BIO_RW_SYNCIO); struct bio_list bl; unsigned long flags; mdk_rdev_t *blocked_rdev; - if (unlikely(bio_barrier(bio))) { + if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER))) { bio_endio(bio, -EOPNOTSUPP); return 0; } @@ -1610,7 +1610,7 @@ static void raid10d(mddev_t *mddev) raid_end_bio_io(r10_bio); bio_put(bio); } else { - const int do_sync = bio_sync(r10_bio->master_bio); + const bool do_sync = bio_rw_flagged(r10_bio->master_bio, BIO_RW_SYNCIO); bio_put(bio); rdev = conf->mirrors[mirror].rdev; if (printk_ratelimit()) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index b8a2c5dc67b..826eb346735 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3606,7 +3606,7 @@ static int make_request(struct request_queue *q, struct bio * bi) const int rw = bio_data_dir(bi); int cpu, remaining; - if (unlikely(bio_barrier(bi))) { + if (unlikely(bio_rw_flagged(bi, BIO_RW_BARRIER))) { bio_endio(bi, -EOPNOTSUPP); return 0; } |