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block: rename bd_invalidated

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Replace bd_invalidate with a new BDEV_NEED_PART_SCAN flag in a bd_flags
variable to better describe the condition.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-09-01 17:57:42 +02:00 committed by Jens Axboe
parent 6540fbf6b6
commit f4ad06f2bb
4 changed files with 13 additions and 11 deletions
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2
block/genhd.c
View File

@ -732,7 +732,7 @@ static void register_disk(struct device *parent, struct gendisk *disk,
if (!bdev)
goto exit;
bdev->bd_invalidated = 1;
set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
err = blkdev_get(bdev, FMODE_READ, NULL);
if (err < 0)
goto exit;

8
drivers/block/nbd.c
View File

@ -315,7 +315,7 @@ static void nbd_size_update(struct nbd_device *nbd)
bd_set_nr_sectors(bdev, nr_sectors);
set_blocksize(bdev, config->blksize);
} else
bdev->bd_invalidated = 1;
set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
bdput(bdev);
}
kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE);
@ -1322,7 +1322,7 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b
return ret;
if (max_part)
bdev->bd_invalidated = 1;
set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
mutex_unlock(&nbd->config_lock);
ret = wait_event_interruptible(config->recv_wq,
atomic_read(&config->recv_threads) == 0);
@ -1500,9 +1500,9 @@ static int nbd_open(struct block_device *bdev, fmode_t mode)
refcount_set(&nbd->config_refs, 1);
refcount_inc(&nbd->refs);
mutex_unlock(&nbd->config_lock);
bdev->bd_invalidated = 1;
set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
} else if (nbd_disconnected(nbd->config)) {
bdev->bd_invalidated = 1;
set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
}
out:
mutex_unlock(&nbd_index_mutex);

10
fs/block_dev.c
View File

@ -881,7 +881,7 @@ struct block_device *bdget(dev_t dev)
bdev->bd_super = NULL;
bdev->bd_inode = inode;
bdev->bd_part_count = 0;
bdev->bd_invalidated = 0;
bdev->bd_flags = 0;
inode->i_mode = S_IFBLK;
inode->i_rdev = dev;
inode->i_bdev = bdev;
@ -1365,7 +1365,7 @@ int check_disk_change(struct block_device *bdev)
if (__invalidate_device(bdev, true))
pr_warn("VFS: busy inodes on changed media %s\n",
disk->disk_name);
bdev->bd_invalidated = 1;
set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
if (bdops->revalidate_disk)
bdops->revalidate_disk(bdev->bd_disk);
return 1;
@ -1390,7 +1390,7 @@ int bdev_disk_changed(struct block_device *bdev, bool invalidate)
lockdep_assert_held(&bdev->bd_mutex);
bdev->bd_invalidated = 0;
clear_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
rescan:
ret = blk_drop_partitions(bdev);
@ -1514,7 +1514,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
* The latter is necessary to prevent ghost
* partitions on a removed medium.
*/
if (bdev->bd_invalidated &&
if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) &&
(!ret || ret == -ENOMEDIUM))
bdev_disk_changed(bdev, ret == -ENOMEDIUM);
@ -1544,7 +1544,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
if (bdev->bd_disk->fops->open)
ret = bdev->bd_disk->fops->open(bdev, mode);
/* the same as first opener case, read comment there */
if (bdev->bd_invalidated &&
if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) &&
(!ret || ret == -ENOMEDIUM))
bdev_disk_changed(bdev, ret == -ENOMEDIUM);
if (ret)

4
include/linux/blk_types.h
View File

@ -19,6 +19,8 @@ struct cgroup_subsys_state;
typedef void (bio_end_io_t) (struct bio *);
struct bio_crypt_ctx;
#define BDEV_NEED_PART_SCAN 0
struct block_device {
dev_t bd_dev;
int bd_openers;
@ -37,7 +39,7 @@ struct block_device {
struct hd_struct * bd_part;
/* number of times partitions within this device have been opened. */
unsigned bd_part_count;
int bd_invalidated;
unsigned long bd_flags;
spinlock_t bd_size_lock; /* for bd_inode->i_size updates */
struct gendisk * bd_disk;
struct backing_dev_info *bd_bdi;