diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-04 17:06:58 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-04 17:06:58 -0700 |
commit | b4fdcb02f1e39c27058a885905bd0277370ba441 (patch) | |
tree | fd4cfd1994f21f44afe5e7904681fb5ac09f81b8 /drivers | |
parent | 044595d4e448305fbaec472eb7d22636d24e7d8c (diff) | |
parent | 6dd9ad7df2019b1e33a372a501907db293ebcd0d (diff) | |
download | op-kernel-dev-b4fdcb02f1e39c27058a885905bd0277370ba441.zip op-kernel-dev-b4fdcb02f1e39c27058a885905bd0277370ba441.tar.gz |
Merge branch 'for-3.2/core' of git://git.kernel.dk/linux-block
* 'for-3.2/core' of git://git.kernel.dk/linux-block: (29 commits)
block: don't call blk_drain_queue() if elevator is not up
blk-throttle: use queue_is_locked() instead of lockdep_is_held()
blk-throttle: Take blkcg->lock while traversing blkcg->policy_list
blk-throttle: Free up policy node associated with deleted rule
block: warn if tag is greater than real_max_depth.
block: make gendisk hold a reference to its queue
blk-flush: move the queue kick into
blk-flush: fix invalid BUG_ON in blk_insert_flush
block: Remove the control of complete cpu from bio.
block: fix a typo in the blk-cgroup.h file
block: initialize the bounce pool if high memory may be added later
block: fix request_queue lifetime handling by making blk_queue_cleanup() properly shutdown
block: drop @tsk from attempt_plug_merge() and explain sync rules
block: make get_request[_wait]() fail if queue is dead
block: reorganize throtl_get_tg() and blk_throtl_bio()
block: reorganize queue draining
block: drop unnecessary blk_get/put_queue() in scsi_cmd_ioctl() and blk_get_tg()
block: pass around REQ_* flags instead of broken down booleans during request alloc/free
block: move blk_throtl prototypes to block/blk.h
block: fix genhd refcounting in blkio_policy_parse_and_set()
...
Fix up trivial conflicts due to "mddev_t" -> "struct mddev" conversion
and making the request functions be of type "void" instead of "int" in
- drivers/md/{faulty.c,linear.c,md.c,md.h,multipath.c,raid0.c,raid1.c,raid10.c,raid5.c}
- drivers/staging/zram/zram_drv.c
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/block/aoe/aoeblk.c | 14 | ||||
-rw-r--r-- | drivers/block/brd.c | 4 | ||||
-rw-r--r-- | drivers/block/drbd/drbd_int.h | 2 | ||||
-rw-r--r-- | drivers/block/drbd/drbd_req.c | 8 | ||||
-rw-r--r-- | drivers/block/loop.c | 140 | ||||
-rw-r--r-- | drivers/block/pktcdvd.c | 11 | ||||
-rw-r--r-- | drivers/block/ps3vram.c | 6 | ||||
-rw-r--r-- | drivers/block/umem.c | 4 | ||||
-rw-r--r-- | drivers/md/dm.c | 25 | ||||
-rw-r--r-- | drivers/md/faulty.c | 14 | ||||
-rw-r--r-- | drivers/md/linear.c | 17 | ||||
-rw-r--r-- | drivers/md/md.c | 12 | ||||
-rw-r--r-- | drivers/md/md.h | 2 | ||||
-rw-r--r-- | drivers/md/multipath.c | 8 | ||||
-rw-r--r-- | drivers/md/raid0.c | 22 | ||||
-rw-r--r-- | drivers/md/raid1.c | 9 | ||||
-rw-r--r-- | drivers/md/raid10.c | 19 | ||||
-rw-r--r-- | drivers/md/raid5.c | 8 | ||||
-rw-r--r-- | drivers/s390/block/dcssblk.c | 7 | ||||
-rw-r--r-- | drivers/s390/block/xpram.c | 5 | ||||
-rw-r--r-- | drivers/staging/zram/zram_drv.c | 5 |
21 files changed, 106 insertions, 236 deletions
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 528f631..167ba0a 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -159,7 +159,7 @@ aoeblk_release(struct gendisk *disk, fmode_t mode) return 0; } -static int +static void aoeblk_make_request(struct request_queue *q, struct bio *bio) { struct sk_buff_head queue; @@ -172,25 +172,25 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio) if (bio == NULL) { printk(KERN_ERR "aoe: bio is NULL\n"); BUG(); - return 0; + return; } d = bio->bi_bdev->bd_disk->private_data; if (d == NULL) { printk(KERN_ERR "aoe: bd_disk->private_data is NULL\n"); BUG(); bio_endio(bio, -ENXIO); - return 0; + return; } else if (bio->bi_io_vec == NULL) { printk(KERN_ERR "aoe: bi_io_vec is NULL\n"); BUG(); bio_endio(bio, -ENXIO); - return 0; + return; } buf = mempool_alloc(d->bufpool, GFP_NOIO); if (buf == NULL) { printk(KERN_INFO "aoe: buf allocation failure\n"); bio_endio(bio, -ENOMEM); - return 0; + return; } memset(buf, 0, sizeof(*buf)); INIT_LIST_HEAD(&buf->bufs); @@ -211,7 +211,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio) spin_unlock_irqrestore(&d->lock, flags); mempool_free(buf, d->bufpool); bio_endio(bio, -ENXIO); - return 0; + return; } list_add_tail(&buf->bufs, &d->bufq); @@ -222,8 +222,6 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio) spin_unlock_irqrestore(&d->lock, flags); aoenet_xmit(&queue); - - return 0; } static int diff --git a/drivers/block/brd.c b/drivers/block/brd.c index dba1c32..d22119d 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -323,7 +323,7 @@ out: return err; } -static int brd_make_request(struct request_queue *q, struct bio *bio) +static void brd_make_request(struct request_queue *q, struct bio *bio) { struct block_device *bdev = bio->bi_bdev; struct brd_device *brd = bdev->bd_disk->private_data; @@ -359,8 +359,6 @@ static int brd_make_request(struct request_queue *q, struct bio *bio) out: bio_endio(bio, err); - - return 0; } #ifdef CONFIG_BLK_DEV_XIP diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 1706d60..9cf2035 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1506,7 +1506,7 @@ extern void drbd_free_mdev(struct drbd_conf *mdev); extern int proc_details; /* drbd_req */ -extern int drbd_make_request(struct request_queue *q, struct bio *bio); +extern void drbd_make_request(struct request_queue *q, struct bio *bio); extern int drbd_read_remote(struct drbd_conf *mdev, struct drbd_request *req); extern int drbd_merge_bvec(struct request_queue *q, struct bvec_merge_data *bvm, struct bio_vec *bvec); extern int is_valid_ar_handle(struct drbd_request *, sector_t); diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 3424d67..4a0f314 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1073,7 +1073,7 @@ static int drbd_fail_request_early(struct drbd_conf *mdev, int is_write) return 0; } -int drbd_make_request(struct request_queue *q, struct bio *bio) +void drbd_make_request(struct request_queue *q, struct bio *bio) { unsigned int s_enr, e_enr; struct drbd_conf *mdev = (struct drbd_conf *) q->queuedata; @@ -1081,7 +1081,7 @@ int drbd_make_request(struct request_queue *q, struct bio *bio) if (drbd_fail_request_early(mdev, bio_data_dir(bio) & WRITE)) { bio_endio(bio, -EPERM); - return 0; + return; } start_time = jiffies; @@ -1100,7 +1100,8 @@ int drbd_make_request(struct request_queue *q, struct bio *bio) if (likely(s_enr == e_enr)) { inc_ap_bio(mdev, 1); - return drbd_make_request_common(mdev, bio, start_time); + drbd_make_request_common(mdev, bio, start_time); + return; } /* can this bio be split generically? @@ -1148,7 +1149,6 @@ int drbd_make_request(struct request_queue *q, struct bio *bio) bio_pair_release(bp); } - return 0; } /* This is called by bio_add_page(). With this function we reduce diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 4720c7a..c77983e 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -203,74 +203,6 @@ lo_do_transfer(struct loop_device *lo, int cmd, } /** - * do_lo_send_aops - helper for writing data to a loop device - * - * This is the fast version for backing filesystems which implement the address - * space operations write_begin and write_end. - */ -static int do_lo_send_aops(struct loop_device *lo, struct bio_vec *bvec, - loff_t pos, struct page *unused) -{ - struct file *file = lo->lo_backing_file; /* kudos to NFsckingS */ - struct address_space *mapping = file->f_mapping; - pgoff_t index; - unsigned offset, bv_offs; - int len, ret; - - mutex_lock(&mapping->host->i_mutex); - index = pos >> PAGE_CACHE_SHIFT; - offset = pos & ((pgoff_t)PAGE_CACHE_SIZE - 1); - bv_offs = bvec->bv_offset; - len = bvec->bv_len; - while (len > 0) { - sector_t IV; - unsigned size, copied; - int transfer_result; - struct page *page; - void *fsdata; - - IV = ((sector_t)index << (PAGE_CACHE_SHIFT - 9))+(offset >> 9); - size = PAGE_CACHE_SIZE - offset; - if (size > len) - size = len; - - ret = pagecache_write_begin(file, mapping, pos, size, 0, - &page, &fsdata); - if (ret) - goto fail; - - file_update_time(file); - - transfer_result = lo_do_transfer(lo, WRITE, page, offset, - bvec->bv_page, bv_offs, size, IV); - copied = size; - if (unlikely(transfer_result)) - copied = 0; - - ret = pagecache_write_end(file, mapping, pos, size, copied, - page, fsdata); - if (ret < 0 || ret != copied) - goto fail; - - if (unlikely(transfer_result)) - goto fail; - - bv_offs += copied; - len -= copied; - offset = 0; - index++; - pos += copied; - } - ret = 0; -out: - mutex_unlock(&mapping->host->i_mutex); - return ret; -fail: - ret = -1; - goto out; -} - -/** * __do_lo_send_write - helper for writing data to a loop device * * This helper just factors out common code between do_lo_send_direct_write() @@ -297,10 +229,8 @@ static int __do_lo_send_write(struct file *file, /** * do_lo_send_direct_write - helper for writing data to a loop device * - * This is the fast, non-transforming version for backing filesystems which do - * not implement the address space operations write_begin and write_end. - * It uses the write file operation which should be present on all writeable - * filesystems. + * This is the fast, non-transforming version that does not need double + * buffering. */ static int do_lo_send_direct_write(struct loop_device *lo, struct bio_vec *bvec, loff_t pos, struct page *page) @@ -316,15 +246,9 @@ static int do_lo_send_direct_write(struct loop_device *lo, /** * do_lo_send_write - helper for writing data to a loop device * - * This is the slow, transforming version for filesystems which do not - * implement the address space operations write_begin and write_end. It - * uses the write file operation which should be present on all writeable - * filesystems. - * - * Using fops->write is slower than using aops->{prepare,commit}_write in the - * transforming case because we need to double buffer the data as we cannot do - * the transformations in place as we do not have direct access to the - * destination pages of the backing file. + * This is the slow, transforming version that needs to double buffer the + * data as it cannot do the transformations in place without having direct + * access to the destination pages of the backing file. */ static int do_lo_send_write(struct loop_device *lo, struct bio_vec *bvec, loff_t pos, struct page *page) @@ -350,17 +274,16 @@ static int lo_send(struct loop_device *lo, struct bio *bio, loff_t pos) struct page *page = NULL; int i, ret = 0; - do_lo_send = do_lo_send_aops; - if (!(lo->lo_flags & LO_FLAGS_USE_AOPS)) { + if (lo->transfer != transfer_none) { + page = alloc_page(GFP_NOIO | __GFP_HIGHMEM); + if (unlikely(!page)) + goto fail; + kmap(page); + do_lo_send = do_lo_send_write; + } else { do_lo_send = do_lo_send_direct_write; - if (lo->transfer != transfer_none) { - page = alloc_page(GFP_NOIO | __GFP_HIGHMEM); - if (unlikely(!page)) - goto fail; - kmap(page); - do_lo_send = do_lo_send_write; - } } + bio_for_each_segment(bvec, bio, i) { ret = do_lo_send(lo, bvec, pos, page); if (ret < 0) @@ -514,7 +437,7 @@ static struct bio *loop_get_bio(struct loop_device *lo) return bio_list_pop(&lo->lo_bio_list); } -static int loop_make_request(struct request_queue *q, struct bio *old_bio) +static void loop_make_request(struct request_queue *q, struct bio *old_bio) { struct loop_device *lo = q->queuedata; int rw = bio_rw(old_bio); @@ -532,12 +455,11 @@ static int loop_make_request(struct request_queue *q, struct bio *old_bio) loop_add_bio(lo, old_bio); wake_up(&lo->lo_event); spin_unlock_irq(&lo->lo_lock); - return 0; + return; out: spin_unlock_irq(&lo->lo_lock); bio_io_error(old_bio); - return 0; } struct switch_request { @@ -849,35 +771,23 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode, mapping = file->f_mapping; inode = mapping->host; - if (!(file->f_mode & FMODE_WRITE)) - lo_flags |= LO_FLAGS_READ_ONLY; - error = -EINVAL; - if (S_ISREG(inode->i_mode) || S_ISBLK(inode->i_mode)) { - const struct address_space_operations *aops = mapping->a_ops; - - if (aops->write_begin) - lo_flags |= LO_FLAGS_USE_AOPS; - if (!(lo_flags & LO_FLAGS_USE_AOPS) && !file->f_op->write) - lo_flags |= LO_FLAGS_READ_ONLY; + if (!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode)) + goto out_putf; - lo_blocksize = S_ISBLK(inode->i_mode) ? - inode->i_bdev->bd_block_size : PAGE_SIZE; + if (!(file->f_mode & FMODE_WRITE) || !(mode & FMODE_WRITE) || + !file->f_op->write) + lo_flags |= LO_FLAGS_READ_ONLY; - error = 0; - } else { - goto out_putf; - } + lo_blocksize = S_ISBLK(inode->i_mode) ? + inode->i_bdev->bd_block_size : PAGE_SIZE; + error = -EFBIG; size = get_loop_size(lo, file); - - if ((loff_t)(sector_t)size != size) { - error = -EFBIG; + if ((loff_t)(sector_t)size != size) goto out_putf; - } - if (!(mode & FMODE_WRITE)) - lo_flags |= LO_FLAGS_READ_ONLY; + error = 0; set_device_ro(bdev, (lo_flags & LO_FLAGS_READ_ONLY) != 0); diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index e133f09..a63b0a2 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2444,7 +2444,7 @@ static void pkt_end_io_read_cloned(struct bio *bio, int err) pkt_bio_finished(pd); } -static int pkt_make_request(struct request_queue *q, struct bio *bio) +static void pkt_make_request(struct request_queue *q, struct bio *bio) { struct pktcdvd_device *pd; char b[BDEVNAME_SIZE]; @@ -2473,7 +2473,7 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio) cloned_bio->bi_end_io = pkt_end_io_read_cloned; pd->stats.secs_r += bio->bi_size >> 9; pkt_queue_bio(pd, cloned_bio); - return 0; + return; } if (!test_bit(PACKET_WRITABLE, &pd->flags)) { @@ -2509,7 +2509,7 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio) pkt_make_request(q, &bp->bio1); pkt_make_request(q, &bp->bio2); bio_pair_release(bp); - return 0; + return; } } @@ -2533,7 +2533,7 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio) } spin_unlock(&pkt->lock); spin_unlock(&pd->cdrw.active_list_lock); - return 0; + return; } else { blocked_bio = 1; } @@ -2584,10 +2584,9 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio) */ wake_up(&pd->wqueue); } - return 0; + return; end_io: bio_io_error(bio); - return 0; } diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c index b3bdb8a..7fad7af 100644 --- a/drivers/block/ps3vram.c +++ b/drivers/block/ps3vram.c @@ -596,7 +596,7 @@ out: return next; } -static int ps3vram_make_request(struct request_queue *q, struct bio *bio) +static void ps3vram_make_request(struct request_queue *q, struct bio *bio) { struct ps3_system_bus_device *dev = q->queuedata; struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev); @@ -610,13 +610,11 @@ static int ps3vram_make_request(struct request_queue *q, struct bio *bio) spin_unlock_irq(&priv->lock); if (busy) - return 0; + return; do { bio = ps3vram_do_bio(dev, bio); } while (bio); - - return 0; } static int __devinit ps3vram_probe(struct ps3_system_bus_device *dev) diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 031ca72..aa27120 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -513,7 +513,7 @@ static void process_page(unsigned long data) } } -static int mm_make_request(struct request_queue *q, struct bio *bio) +static void mm_make_request(struct request_queue *q, struct bio *bio) { struct cardinfo *card = q->queuedata; pr_debug("mm_make_request %llu %u\n", @@ -525,7 +525,7 @@ static int mm_make_request(struct request_queue *q, struct bio *bio) card->biotail = &bio->bi_next; spin_unlock_irq(&card->lock); - return 0; + return; } static irqreturn_t mm_interrupt(int irq, void *__card) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 6b6616a..4720f68 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -192,9 +192,6 @@ struct mapped_device { /* forced geometry settings */ struct hd_geometry geometry; - /* For saving the address of __make_request for request based dm */ - make_request_fn *saved_make_request_fn; - /* sysfs handle */ struct kobject kobj; @@ -1403,7 +1400,7 @@ out: * The request function that just remaps the bio built up by * dm_merge_bvec. */ -static int _dm_request(struct request_queue *q, struct bio *bio) +static void _dm_request(struct request_queue *q, struct bio *bio) { int rw = bio_data_dir(bio); struct mapped_device *md = q->queuedata; @@ -1424,19 +1421,12 @@ static int _dm_request(struct request_queue *q, struct bio *bio) queue_io(md, bio); else bio_io_error(bio); - return 0; + return; } __split_and_process_bio(md, bio); up_read(&md->io_lock); - return 0; -} - -static int dm_make_request(struct request_queue *q, struct bio *bio) -{ - struct mapped_device *md = q->queuedata; - - return md->saved_make_request_fn(q, bio); /* call __make_request() */ + return; } static int dm_request_based(struct mapped_device *md) @@ -1444,14 +1434,14 @@ static int dm_request_based(struct mapped_device *md) return blk_queue_stackable(md->queue); } -static int dm_request(struct request_queue *q, struct bio *bio) +static void dm_request(struct request_queue *q, struct bio *bio) { struct mapped_device *md = q->queuedata; if (dm_request_based(md)) - return dm_make_request(q, bio); - - return _dm_request(q, bio); + blk_queue_bio(q, bio); + else + _dm_request(q, bio); } void dm_dispatch_request(struct request *rq) @@ -2191,7 +2181,6 @@ static int dm_init_request_based_queue(struct mapped_device *md) return 0; md->queue = q; - md->saved_make_request_fn = md->queue->make_request_fn; dm_init_md_queue(md); blk_queue_softirq_done(md->queue, dm_softirq_done); blk_queue_prep_rq(md->queue, dm_prep_fn); diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c index 60816b1..918fb8a 100644 --- a/drivers/md/faulty.c +++ b/drivers/md/faulty.c @@ -169,7 +169,7 @@ static void add_sector(struct faulty_conf *conf, sector_t start, int mode) conf->nfaults = n+1; } -static int make_request(struct mddev *mddev, struct bio *bio) +static void make_request(struct mddev *mddev, struct bio *bio) { struct faulty_conf *conf = mddev->private; int failit = 0; @@ -181,7 +181,7 @@ static int make_request(struct mddev *mddev, struct bio *bio) * just fail immediately */ bio_endio(bio, -EIO); - return 0; + return; } if (check_sector(conf, bio->bi_sector, bio->bi_sector+(bio->bi_size>>9), @@ -211,15 +211,15 @@ static int make_request(struct mddev *mddev, struct bio *bio) } if (failit) { struct bio *b = bio_clone_mddev(bio, GFP_NOIO, mddev); + b->bi_bdev = conf->rdev->bdev; b->bi_private = bio; b->bi_end_io = faulty_fail; - generic_make_request(b); - return 0; - } else { + bio = b; + } else bio->bi_bdev = conf->rdev->bdev; - return 1; - } + + generic_make_request(bio); } static void status(struct seq_file *seq, struct mddev *mddev) diff --git a/drivers/md/linear.c b/drivers/md/linear.c index 10c5844..a820358 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -264,14 +264,14 @@ static int linear_stop (struct mddev *mddev) return 0; } -static int linear_make_request (struct mddev *mddev, struct bio *bio) +static void linear_make_request(struct mddev *mddev, struct bio *bio) { struct dev_info *tmp_dev; sector_t start_sector; if (unlikely(bio->bi_rw & REQ_FLUSH)) { md_flush_request(mddev, bio); - return 0; + return; } rcu_read_lock(); @@ -293,7 +293,7 @@ static int linear_make_request (struct mddev *mddev, struct bio *bio) (unsigned long long)start_sector); rcu_read_unlock(); bio_io_error(bio); - return 0; + return; } if (unlikely(bio->bi_sector + (bio->bi_size >> 9) > tmp_dev->end_sector)) { @@ -307,20 +307,17 @@ static int linear_make_request (struct mddev *mddev, struct bio *bio) bp = bio_split(bio, end_sector - bio->bi_sector); - if (linear_make_request(mddev, &bp->bio1)) - generic_make_request(&bp->bio1); - if (linear_make_request(mddev, &bp->bio2)) - generic_make_request(&bp->bio2); + linear_make_request(mddev, &bp->bio1); + linear_make_request(mddev, &bp->bio2); bio_pair_release(bp); - return 0; + return; } bio->bi_bdev = tmp_dev->rdev->bdev; bio->bi_sector = bio->bi_sector - start_sector + tmp_dev->rdev->data_offset; rcu_read_unlock(); - - return 1; + generic_make_request(bio); } static void linear_status (struct seq_file *seq, struct mddev *mddev) diff --git a/drivers/md/md.c b/drivers/md/md.c index 266e82e..2acb328 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -332,18 +332,17 @@ static DEFINE_SPINLOCK(all_mddevs_lock); * call has finished, the bio has been linked into some internal structure * and so is visible to ->quiesce(), so we don't need the refcount any more. */ -static int md_make_request(struct request_queue *q, struct bio *bio) +static void md_make_request(struct request_queue *q, struct bio *bio) { const int rw = bio_data_dir(bio); struct mddev *mddev = q->queuedata; - int rv; int cpu; unsigned int sectors; if (mddev == NULL || mddev->pers == NULL || !mddev->ready) { bio_io_error(bio); - return 0; + return; } smp_rmb(); /* Ensure implications of 'active' are visible */ rcu_read_lock(); @@ -368,7 +367,7 @@ static int md_make_request(struct request_queue *q, struct bio *bio) * go away inside make_request */ sectors = bio_sectors(bio); - rv = mddev->pers->make_request(mddev, bio); + mddev->pers->make_request(mddev, bio); cpu = part_stat_lock(); part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]); @@ -377,8 +376,6 @@ static int md_make_request(struct request_queue *q, struct bio *bio) if (atomic_dec_and_test(&mddev->active_io) && mddev->suspended) wake_up(&mddev->sb_wait); - - return rv; } /* mddev_suspend makes sure no new requests are submitted @@ -477,8 +474,7 @@ static void md_submit_flush_data(struct work_struct *ws) bio_endio(bio, 0); else { bio->bi_rw &= ~REQ_FLUSH; - if (mddev->pers->make_request(mddev, bio)) - generic_make_request(bio); + mddev->pers->make_request(mddev, bio); } mddev->flush_bio = NULL; diff --git a/drivers/md/md.h b/drivers/md/md.h index 51c1d91..cf742d9 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -419,7 +419,7 @@ struct md_personality int level; struct list_head list; struct module *owner; - int (*make_request)(struct mddev *mddev, struct bio *bio); + void (*make_request)(struct mddev *mddev, struct bio *bio); int (*run)(struct mddev *mddev); int (*stop)(struct mddev *mddev); void (*status)(struct seq_file *seq, struct mddev *mddev); diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index d32c785..ad20a28 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -106,7 +106,7 @@ static void multipath_end_request(struct bio *bio, int error) rdev_dec_pending(rdev, conf->mddev); } -static int multipath_make_request(struct mddev *mddev, struct bio * bio) +static void multipath_make_request(struct mddev *mddev, struct bio * bio) { struct mpconf *conf = mddev->private; struct multipath_bh * mp_bh; @@ -114,7 +114,7 @@ static int multipath_make_request(struct mddev *mddev, struct bio * bio) if (unlikely(bio->bi_rw & REQ_FLUSH)) { md_flush_request(mddev, bio); - return 0; + return; } mp_bh = mempool_alloc(conf->pool, GFP_NOIO); @@ -126,7 +126,7 @@ static int multipath_make_request(struct mddev *mddev, struct bio * bio) if (mp_bh->path < 0) { bio_endio(bio, -EIO); mempool_free(mp_bh, conf->pool); - return 0; + return; } multipath = conf->multipaths + mp_bh->path; @@ -137,7 +137,7 @@ static int multipath_make_request(struct mddev *mddev, struct bio * bio) mp_bh->bio.bi_end_io = multipath_end_request; mp_bh->bio.bi_private = mp_bh; generic_make_request(&mp_bh->bio); - return 0; + return; } static void multipath_status (struct seq_file *seq, struct mddev *mddev) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 0eb08a4..27e19e2 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -468,7 +468,7 @@ static inline int is_io_in_chunk_boundary(struct mddev *mddev, } } -static int raid0_make_request(struct mddev *mddev, struct bio *bio) +static void raid0_make_request(struct mddev *mddev, struct bio *bio) { unsigned int chunk_sects; sector_t sector_offset; @@ -477,7 +477,7 @@ static int raid0_make_request(struct mddev *mddev, struct bio *bio) if (unlikely(bio->bi_rw & REQ_FLUSH)) { md_flush_request(mddev, bio); - return 0; + return; } chunk_sects = mddev->chunk_sectors; @@ -497,13 +497,10 @@ static int raid0_make_request(struct mddev *mddev, struct bio *bio) else bp = bio_split(bio, chunk_sects - sector_div(sector, chunk_sects)); - if (raid0_make_request(mddev, &bp->bio1)) - generic_make_request(&bp->bio1); - if (raid0_make_request(mddev, &bp->bio2)) - generic_make_request(&bp->bio2); - + raid0_make_request(mddev, &bp->bio1); + raid0_make_request(mddev, &bp->bio2); bio_pair_release(bp); - return 0; + return; } sector_offset = bio->bi_sector; @@ -513,10 +510,9 @@ static int raid0_make_request(struct mddev *mddev, struct bio *bio) bio->bi_bdev = tmp_dev->bdev; bio->bi_sector = sector_offset + zone->dev_start + tmp_dev->data_offset; - /* - * Let the main block layer submit the IO and resolve recursion: - */ - return 1; + + generic_make_request(bio); + return; bad_map: printk("md/raid0:%s: make_request bug: can't convert block across chunks" @@ -525,7 +521,7 @@ bad_map: (unsigned long long)bio->bi_sector, bio->bi_size >> 10); bio_io_error(bio); - return 0; + return; } static void raid0_status(struct seq_file *seq, struct mddev *mddev) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 4602fc5..cae8746 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -807,7 +807,7 @@ do_sync_io: pr_debug("%dB behind alloc failed, doing sync I/O\n", bio->bi_size); } -static int make_request(struct mddev *mddev, struct bio * bio) +static void make_request(struct mddev *mddev, struct bio * bio) { struct r1conf *conf = mddev->private; struct mirror_info *mirror; @@ -892,7 +892,7 @@ read_again: if (rdisk < 0) { /* couldn't find anywhere to read from */ raid_end_bio_io(r1_bio); - return 0; + return; } mirror = conf->mirrors + rdisk; @@ -950,7 +950,7 @@ read_again: goto read_again; } else generic_make_request(read_bio); - return 0; + return; } /* @@ -1151,8 +1151,6 @@ read_again: if (do_sync || !bitmap || !plugged) md_wakeup_thread(mddev->thread); - - return 0; } static void status(struct seq_file *seq, struct mddev *mddev) @@ -2193,7 +2191,6 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipp bio->bi_next = NULL; bio->bi_flags &= ~(BIO_POOL_MASK-1); bio->bi_flags |= 1 << BIO_UPTODATE; - bio->bi_comp_cpu = -1; bio->bi_rw = READ; bio->bi_vcnt = 0; bio->bi_idx = 0; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index c025a82..dde6dd4 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -842,7 +842,7 @@ static void unfreeze_array(struct r10conf *conf) spin_unlock_irq(&conf->resync_lock); } -static int make_request(struct mddev *mddev, struct bio * bio) +static void make_request(struct mddev *mddev, struct bio * bio) { struct r10conf *conf = mddev->private; struct mirror_info *mirror; @@ -861,7 +861,7 @@ static int make_request(struct mddev *mddev, struct bio * bio) if (unlikely(bio->bi_rw & REQ_FLUSH)) { md_flush_request(mddev, bio); - return 0; + return; } /* If this request crosses a chunk boundary, we need to @@ -893,10 +893,8 @@ static int make_request(struct mddev *mddev, struct bio * bio) conf->nr_waiting++; spin_unlock_irq(&conf->resync_lock); - if (make_request(mddev, &bp->bio1)) - generic_make_request(&bp->bio1); - if (make_request(mddev, &bp->bio2)) - generic_make_request(&bp->bio2); + make_request(mddev, &bp->bio1); + make_request(mddev, &bp->bio2); spin_lock_irq(&conf->resync_lock); conf->nr_waiting--; @@ -904,14 +902,14 @@ static int make_request(struct mddev *mddev, struct bio * bio) spin_unlock_irq(&conf->resync_lock); bio_pair_release(bp); - return 0; + return; bad_map: printk("md/raid10:%s: make_request bug: can't convert block across chunks" " or bigger than %dk %llu %d\n", mdname(mddev), chunk_sects/2, (unsigned long long)bio->bi_sector, bio->bi_size >> 10); bio_io_error(bio); - return 0; + return; } md_write_start(mddev, bio); @@ -954,7 +952,7 @@ read_again: slot = r10_bio->read_slot; if (disk < 0) { raid_end_bio_io(r10_bio); - return 0; + return; } mirror = conf->mirrors + disk; @@ -1002,7 +1000,7 @@ read_again: goto read_again; } else generic_make_request(read_bio); - return 0; + return; } /* @@ -1176,7 +1174,6 @@ retry_write: if (do_sync || !mddev->bitmap || !plugged) md_wakeup_thread(mddev->thread); - return 0; } static void status(struct seq_file *seq, struct mddev *mddev) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index f6fe053..bb1b461 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3688,7 +3688,7 @@ static struct stripe_head *__get_priority_stripe(struct r5conf *conf) return sh; } -static int make_request(struct mddev *mddev, struct bio * bi) +static void make_request(struct mddev *mddev, struct bio * bi) { struct r5conf *conf = mddev->private; int dd_idx; @@ -3701,7 +3701,7 @@ static int make_request(struct mddev *mddev, struct bio * bi) if (unlikely(bi->bi_rw & REQ_FLUSH)) { md_flush_request(mddev, bi); - return 0; + return; } md_write_start(mddev, bi); @@ -3709,7 +3709,7 @@ static int make_request(struct mddev *mddev, struct bio * bi) if (rw == READ && mddev->reshape_position == MaxSector && chunk_aligned_read(mddev,bi)) - return 0; + return; logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1); last_sector = bi->bi_sector + (bi->bi_size>>9); @@ -3844,8 +3844,6 @@ static int make_request(struct mddev *mddev, struct bio * bi) bio_endio(bi, 0); } - - return 0; } static sector_t raid5_size(struct mddev *mddev, sector_t sectors, int raid_disks); diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 9b43ae9..a5a55da2 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -27,7 +27,7 @@ static int dcssblk_open(struct block_device *bdev, fmode_t mode); static int dcssblk_release(struct gendisk *disk, fmode_t mode); -static int dcssblk_make_request(struct request_queue *q, struct bio *bio); +static void dcssblk_make_request(struct request_queue *q, struct bio *bio); static int dcssblk_direct_access(struct block_device *bdev, sector_t secnum, void **kaddr, unsigned long *pfn); @@ -814,7 +814,7 @@ out: return rc; } -static int +static void dcssblk_make_request(struct request_queue *q, struct bio *bio) { struct dcssblk_dev_info *dev_info; @@ -871,10 +871,9 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) bytes_done += bvec->bv_len; } bio_endio(bio, 0); - return 0; + return; fail: bio_io_error(bio); - return 0; } static int diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index 1f6a4d8..98f3e4a 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -181,7 +181,7 @@ static unsigned long xpram_highest_page_index(void) /* * Block device make request function. */ -static int xpram_make_request(struct request_queue *q, struct bio *bio) +static void xpram_make_request(struct request_queue *q, struct bio *bio) { xpram_device_t *xdev = bio->bi_bdev->bd_disk->private_data; struct bio_vec *bvec; @@ -221,10 +221,9 @@ static int xpram_make_request(struct request_queue *q, struct bio *bio) } set_bit(BIO_UPTODATE, &bio->bi_flags); bio_endio(bio, 0); - return 0; + return; fail: bio_io_error(bio); - return 0; } static int xpram_getgeo(struct block_device *bdev, struct hd_geometry *geo) diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c index b9926ee..09de99f 100644 --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -556,7 +556,7 @@ static inline int valid_io_request(struct zram *zram, struct bio *bio) /* * Handler function for all zram I/O requests. */ -static int zram_make_request(struct request_queue *queue, struct bio *bio) +static void zram_make_request(struct request_queue *queue, struct bio *bio) { struct zram *zram = queue->queuedata; @@ -575,13 +575,12 @@ static int zram_make_request(struct request_queue *queue, struct bio *bio) __zram_make_request(zram, bio, bio_data_dir(bio)); up_read(&zram->init_lock); - return 0; + return; error_unlock: up_read(&zram->init_lock); error: bio_io_error(bio); - return 0; } void __zram_reset_device(struct zram *zram) |