diff options
| -rw-r--r-- | block/partitions/core.c | 4 | ||||
| -rw-r--r-- | drivers/block/aoe/aoecmd.c | 4 | ||||
| -rw-r--r-- | drivers/md/dm.c | 15 | ||||
| -rw-r--r-- | drivers/s390/block/dasd_ioctl.c | 9 | ||||
| -rw-r--r-- | fs/block_dev.c | 25 | ||||
| -rw-r--r-- | include/linux/blk_types.h | 1 |
6 files changed, 22 insertions, 36 deletions
diff --git a/block/partitions/core.c b/block/partitions/core.c index 5b4869c08fb3..b1c0b50ca92d 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -592,8 +592,8 @@ int bdev_resize_partition(struct block_device *bdev, int partno, if (partition_overlaps(bdev->bd_disk, start, length, partno)) goto out_unlock; - part_nr_sects_write(part, (sector_t)length); - i_size_write(bdevp->bd_inode, length << SECTOR_SHIFT); + part_nr_sects_write(part, length); + bd_set_nr_sectors(bdevp, length); ret = 0; out_unlock: diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 6dba41395155..313f0b946fe2 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -900,9 +900,7 @@ aoecmd_sleepwork(struct work_struct *work) ssize = get_capacity(d->gd); bd = bdget_disk(d->gd, 0); if (bd) { - inode_lock(bd->bd_inode); - i_size_write(bd->bd_inode, (loff_t)ssize<<9); - inode_unlock(bd->bd_inode); + bd_set_nr_sectors(bd, ssize); bdput(bd); } spin_lock_irq(&d->lock); diff --git a/drivers/md/dm.c b/drivers/md/dm.c index fb0255d25e4b..3dedd9cc4fb6 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2098,18 +2098,6 @@ static void event_callback(void *context) } /* - * Protected by md->suspend_lock obtained by dm_swap_table(). - */ -static void __set_size(struct mapped_device *md, sector_t size) -{ - lockdep_assert_held(&md->suspend_lock); - - set_capacity(md->disk, size); - - i_size_write(md->bdev->bd_inode, (loff_t)size << SECTOR_SHIFT); -} - -/* * Returns old map, which caller must destroy. */ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t, @@ -2131,7 +2119,8 @@ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t, if (size != dm_get_size(md)) memset(&md->geometry, 0, sizeof(md->geometry)); - __set_size(md, size); + set_capacity(md->disk, size); + bd_set_nr_sectors(md->bdev, size); dm_table_event_callback(t, event_callback, md); diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c index 777734d1b4e5..faaf5596e31c 100644 --- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -55,10 +55,7 @@ dasd_ioctl_enable(struct block_device *bdev) dasd_enable_device(base); /* Formatting the dasd device can change the capacity. */ - mutex_lock(&bdev->bd_mutex); - i_size_write(bdev->bd_inode, - (loff_t)get_capacity(base->block->gdp) << 9); - mutex_unlock(&bdev->bd_mutex); + bd_set_nr_sectors(bdev, get_capacity(base->block->gdp)); dasd_put_device(base); return 0; } @@ -91,9 +88,7 @@ dasd_ioctl_disable(struct block_device *bdev) * Set i_size to zero, since read, write, etc. check against this * value. */ - mutex_lock(&bdev->bd_mutex); - i_size_write(bdev->bd_inode, 0); - mutex_unlock(&bdev->bd_mutex); + bd_set_nr_sectors(bdev, 0); dasd_put_device(base); return 0; } diff --git a/fs/block_dev.c b/fs/block_dev.c index f52597172c8b..08158bb2e76c 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -876,6 +876,7 @@ struct block_device *bdget(dev_t dev) bdev = &BDEV_I(inode)->bdev; if (inode->i_state & I_NEW) { + spin_lock_init(&bdev->bd_size_lock); bdev->bd_contains = NULL; bdev->bd_super = NULL; bdev->bd_inode = inode; @@ -1290,6 +1291,7 @@ static void check_disk_size_change(struct gendisk *disk, { loff_t disk_size, bdev_size; + spin_lock(&bdev->bd_size_lock); disk_size = (loff_t)get_capacity(disk) << 9; bdev_size = i_size_read(bdev->bd_inode); if (disk_size != bdev_size) { @@ -1299,11 +1301,15 @@ static void check_disk_size_change(struct gendisk *disk, disk->disk_name, bdev_size, disk_size); } i_size_write(bdev->bd_inode, disk_size); - if (bdev_size > disk_size && __invalidate_device(bdev, false)) + } + bdev->bd_invalidated = 0; + spin_unlock(&bdev->bd_size_lock); + + if (bdev_size > disk_size) { + if (__invalidate_device(bdev, false)) pr_warn("VFS: busy inodes on resized disk %s\n", disk->disk_name); } - bdev->bd_invalidated = 0; } /** @@ -1328,13 +1334,10 @@ int revalidate_disk(struct gendisk *disk) if (!(disk->flags & GENHD_FL_HIDDEN)) { struct block_device *bdev = bdget_disk(disk, 0); - if (!bdev) - return ret; - - mutex_lock(&bdev->bd_mutex); - check_disk_size_change(disk, bdev, ret == 0); - mutex_unlock(&bdev->bd_mutex); - bdput(bdev); + if (bdev) { + check_disk_size_change(disk, bdev, ret == 0); + bdput(bdev); + } } return ret; } @@ -1373,9 +1376,9 @@ EXPORT_SYMBOL(check_disk_change); void bd_set_nr_sectors(struct block_device *bdev, sector_t sectors) { - inode_lock(bdev->bd_inode); + spin_lock(&bdev->bd_size_lock); i_size_write(bdev->bd_inode, (loff_t)sectors << SECTOR_SHIFT); - inode_unlock(bdev->bd_inode); + spin_unlock(&bdev->bd_size_lock); } EXPORT_SYMBOL(bd_set_nr_sectors); diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 4ecf4fed171f..5accc2549d22 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -38,6 +38,7 @@ struct block_device { /* number of times partitions within this device have been opened. */ unsigned bd_part_count; int bd_invalidated; + spinlock_t bd_size_lock; /* for bd_inode->i_size updates */ struct gendisk * bd_disk; struct backing_dev_info *bd_bdi; |