diff options
author | Jiri Kosina <jkosina@suse.cz> | 2010-12-22 18:57:02 +0100 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2010-12-22 18:57:02 +0100 |
commit | 4b7bd364700d9ac8372eff48832062b936d0793b (patch) | |
tree | 0dbf78c95456a0b02d07fcd473281f04a87e266d /drivers/md/md.c | |
parent | c0d8768af260e2cbb4bf659ae6094a262c86b085 (diff) | |
parent | 90a8a73c06cc32b609a880d48449d7083327e11a (diff) | |
download | linux-rt-4b7bd364700d9ac8372eff48832062b936d0793b.tar.gz |
Merge branch 'master' into for-next
Conflicts:
MAINTAINERS
arch/arm/mach-omap2/pm24xx.c
drivers/scsi/bfa/bfa_fcpim.c
Needed to update to apply fixes for which the old branch was too
outdated.
Diffstat (limited to 'drivers/md/md.c')
-rw-r--r-- | drivers/md/md.c | 68 |
1 files changed, 34 insertions, 34 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 4e957f3140a8..175c424f201f 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -371,10 +371,15 @@ static void md_end_flush(struct bio *bio, int err) bio_put(bio); } -static void submit_flushes(mddev_t *mddev) +static void md_submit_flush_data(struct work_struct *ws); + +static void submit_flushes(struct work_struct *ws) { + mddev_t *mddev = container_of(ws, mddev_t, flush_work); mdk_rdev_t *rdev; + INIT_WORK(&mddev->flush_work, md_submit_flush_data); + atomic_set(&mddev->flush_pending, 1); rcu_read_lock(); list_for_each_entry_rcu(rdev, &mddev->disks, same_set) if (rdev->raid_disk >= 0 && @@ -397,6 +402,8 @@ static void submit_flushes(mddev_t *mddev) rdev_dec_pending(rdev, mddev); } rcu_read_unlock(); + if (atomic_dec_and_test(&mddev->flush_pending)) + queue_work(md_wq, &mddev->flush_work); } static void md_submit_flush_data(struct work_struct *ws) @@ -404,8 +411,6 @@ static void md_submit_flush_data(struct work_struct *ws) mddev_t *mddev = container_of(ws, mddev_t, flush_work); struct bio *bio = mddev->flush_bio; - atomic_set(&mddev->flush_pending, 1); - if (bio->bi_size == 0) /* an empty barrier - all done */ bio_endio(bio, 0); @@ -414,10 +419,9 @@ static void md_submit_flush_data(struct work_struct *ws) if (mddev->pers->make_request(mddev, bio)) generic_make_request(bio); } - if (atomic_dec_and_test(&mddev->flush_pending)) { - mddev->flush_bio = NULL; - wake_up(&mddev->sb_wait); - } + + mddev->flush_bio = NULL; + wake_up(&mddev->sb_wait); } void md_flush_request(mddev_t *mddev, struct bio *bio) @@ -429,13 +433,8 @@ void md_flush_request(mddev_t *mddev, struct bio *bio) mddev->flush_bio = bio; spin_unlock_irq(&mddev->write_lock); - atomic_set(&mddev->flush_pending, 1); - INIT_WORK(&mddev->flush_work, md_submit_flush_data); - - submit_flushes(mddev); - - if (atomic_dec_and_test(&mddev->flush_pending)) - queue_work(md_wq, &mddev->flush_work); + INIT_WORK(&mddev->flush_work, submit_flushes); + queue_work(md_wq, &mddev->flush_work); } EXPORT_SYMBOL(md_flush_request); @@ -706,7 +705,7 @@ static struct mdk_personality *find_pers(int level, char *clevel) /* return the offset of the super block in 512byte sectors */ static inline sector_t calc_dev_sboffset(struct block_device *bdev) { - sector_t num_sectors = bdev->bd_inode->i_size / 512; + sector_t num_sectors = i_size_read(bdev->bd_inode) / 512; return MD_NEW_SIZE_SECTORS(num_sectors); } @@ -1337,7 +1336,7 @@ super_90_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors) md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size, rdev->sb_page); md_super_wait(rdev->mddev); - return num_sectors / 2; /* kB for sysfs */ + return num_sectors; } @@ -1386,7 +1385,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version) */ switch(minor_version) { case 0: - sb_start = rdev->bdev->bd_inode->i_size >> 9; + sb_start = i_size_read(rdev->bdev->bd_inode) >> 9; sb_start -= 8*2; sb_start &= ~(sector_t)(4*2-1); break; @@ -1472,7 +1471,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version) ret = 0; } if (minor_version) - rdev->sectors = (rdev->bdev->bd_inode->i_size >> 9) - + rdev->sectors = (i_size_read(rdev->bdev->bd_inode) >> 9) - le64_to_cpu(sb->data_offset); else rdev->sectors = rdev->sb_start; @@ -1680,7 +1679,7 @@ super_1_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors) return 0; /* component must fit device */ if (rdev->sb_start < rdev->data_offset) { /* minor versions 1 and 2; superblock before data */ - max_sectors = rdev->bdev->bd_inode->i_size >> 9; + max_sectors = i_size_read(rdev->bdev->bd_inode) >> 9; max_sectors -= rdev->data_offset; if (!num_sectors || num_sectors > max_sectors) num_sectors = max_sectors; @@ -1690,7 +1689,7 @@ super_1_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors) } else { /* minor version 0; superblock after data */ sector_t sb_start; - sb_start = (rdev->bdev->bd_inode->i_size >> 9) - 8*2; + sb_start = (i_size_read(rdev->bdev->bd_inode) >> 9) - 8*2; sb_start &= ~(sector_t)(4*2 - 1); max_sectors = rdev->sectors + sb_start - rdev->sb_start; if (!num_sectors || num_sectors > max_sectors) @@ -1704,7 +1703,7 @@ super_1_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors) md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size, rdev->sb_page); md_super_wait(rdev->mddev); - return num_sectors / 2; /* kB for sysfs */ + return num_sectors; } static struct super_type super_types[] = { @@ -2584,7 +2583,7 @@ rdev_size_store(mdk_rdev_t *rdev, const char *buf, size_t len) if (!sectors) return -EBUSY; } else if (!sectors) - sectors = (rdev->bdev->bd_inode->i_size >> 9) - + sectors = (i_size_read(rdev->bdev->bd_inode) >> 9) - rdev->data_offset; } if (sectors < my_mddev->dev_sectors) @@ -2797,7 +2796,7 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi kobject_init(&rdev->kobj, &rdev_ktype); - size = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS; + size = i_size_read(rdev->bdev->bd_inode) >> BLOCK_SIZE_BITS; if (!size) { printk(KERN_WARNING "md: %s has zero or unknown size, marking faulty!\n", @@ -4296,9 +4295,6 @@ static int md_alloc(dev_t dev, char *name) goto abort; mddev->queue->queuedata = mddev; - /* Can be unlocked because the queue is new: no concurrency */ - queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, mddev->queue); - blk_queue_make_request(mddev->queue, md_make_request); disk = alloc_disk(1 << shift); @@ -4338,6 +4334,8 @@ static int md_alloc(dev_t dev, char *name) if (mddev->kobj.sd && sysfs_create_group(&mddev->kobj, &md_bitmap_group)) printk(KERN_DEBUG "pointless warning\n"); + + blk_queue_flush(mddev->queue, REQ_FLUSH | REQ_FUA); abort: mutex_unlock(&disks_mutex); if (!error && mddev->kobj.sd) { @@ -5158,7 +5156,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info) PTR_ERR(rdev)); return PTR_ERR(rdev); } - /* set save_raid_disk if appropriate */ + /* set saved_raid_disk if appropriate */ if (!mddev->persistent) { if (info->state & (1<<MD_DISK_SYNC) && info->raid_disk < mddev->raid_disks) @@ -5168,7 +5166,10 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info) } else super_types[mddev->major_version]. validate_super(mddev, rdev); - rdev->saved_raid_disk = rdev->raid_disk; + if (test_bit(In_sync, &rdev->flags)) + rdev->saved_raid_disk = rdev->raid_disk; + else + rdev->saved_raid_disk = -1; clear_bit(In_sync, &rdev->flags); /* just to be sure */ if (info->state & (1<<MD_DISK_WRITEMOSTLY)) @@ -5235,8 +5236,8 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info) if (!mddev->persistent) { printk(KERN_INFO "md: nonpersistent superblock ...\n"); - rdev->sb_start = rdev->bdev->bd_inode->i_size / 512; - } else + rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512; + } else rdev->sb_start = calc_dev_sboffset(rdev->bdev); rdev->sectors = rdev->sb_start; @@ -5306,7 +5307,7 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev) if (mddev->persistent) rdev->sb_start = calc_dev_sboffset(rdev->bdev); else - rdev->sb_start = rdev->bdev->bd_inode->i_size / 512; + rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512; rdev->sectors = rdev->sb_start; @@ -6040,9 +6041,8 @@ static int md_thread(void * arg) || kthread_should_stop(), thread->timeout); - clear_bit(THREAD_WAKEUP, &thread->flags); - - thread->run(thread->mddev); + if (test_and_clear_bit(THREAD_WAKEUP, &thread->flags)) + thread->run(thread->mddev); } return 0; |