static void bdev_inode_switch_bdi(struct inode *inode,
struct backing_dev_info *dst)
{
- spin_lock(&inode_lock);
+ spin_lock(&inode_wb_list_lock);
+ spin_lock(&inode->i_lock);
inode->i_data.backing_dev_info = dst;
if (inode->i_state & I_DIRTY)
list_move(&inode->i_wb_list, &dst->wb.b_dirty);
- spin_unlock(&inode_lock);
+ spin_unlock(&inode->i_lock);
+ spin_unlock(&inode_wb_list_lock);
}
static sector_t max_block(struct block_device *bdev)
* @whole: whole block device containing @bdev, may equal @bdev
* @holder: holder trying to claim @bdev
*
- * Test whther @bdev can be claimed by @holder.
+ * Test whether @bdev can be claimed by @holder.
*
* CONTEXT:
* spin_lock(&bdev_lock).
if (!disk)
goto out;
+ disk_block_events(disk);
mutex_lock_nested(&bdev->bd_mutex, for_part);
if (!bdev->bd_openers) {
bdev->bd_disk = disk;
*/
disk_put_part(bdev->bd_part);
bdev->bd_part = NULL;
- module_put(disk->fops->owner);
- put_disk(disk);
bdev->bd_disk = NULL;
mutex_unlock(&bdev->bd_mutex);
+ disk_unblock_events(disk);
+ module_put(disk->fops->owner);
+ put_disk(disk);
goto restart;
}
if (ret)
bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9);
}
} else {
- module_put(disk->fops->owner);
- put_disk(disk);
- disk = NULL;
if (bdev->bd_contains == bdev) {
if (bdev->bd_disk->fops->open) {
ret = bdev->bd_disk->fops->open(bdev, mode);
if (bdev->bd_invalidated)
rescan_partitions(bdev->bd_disk, bdev);
}
+ /* only one opener holds refs to the module and disk */
+ module_put(disk->fops->owner);
+ put_disk(disk);
}
bdev->bd_openers++;
if (for_part)
bdev->bd_part_count++;
mutex_unlock(&bdev->bd_mutex);
+ disk_unblock_events(disk);
return 0;
out_clear:
bdev->bd_contains = NULL;
out_unlock_bdev:
mutex_unlock(&bdev->bd_mutex);
- out:
- if (disk)
- module_put(disk->fops->owner);
+ disk_unblock_events(disk);
+ module_put(disk->fops->owner);
put_disk(disk);
+ out:
bdput(bdev);
return ret;
if (bdev_free) {
if (bdev->bd_write_holder) {
disk_unblock_events(bdev->bd_disk);
- bdev->bd_write_holder = false;
- } else
disk_check_events(bdev->bd_disk);
+ bdev->bd_write_holder = false;
+ }
}
mutex_unlock(&bdev->bd_mutex);
- } else
- disk_check_events(bdev->bd_disk);
+ }
return __blkdev_put(bdev, mode, 0);
}
static const struct address_space_operations def_blk_aops = {
.readpage = blkdev_readpage,
.writepage = blkdev_writepage,
- .sync_page = block_sync_page,
.write_begin = blkdev_write_begin,
.write_end = blkdev_write_end,
.writepages = generic_writepages,