Commit 5afb7835 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: don't print a message when the device went away 



The information about a size change in this case just creates confusion.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 4163a039

block/partition-generic.c

+2 −2
Original line number Diff line number Diff line
@@ -516,7 +516,7 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev) 


	if (disk->fops->revalidate_disk)

		disk->fops->revalidate_disk(disk);

	check_disk_size_change(disk, bdev);

	check_disk_size_change(disk, bdev, true);

	bdev->bd_invalidated = 0;

	if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))

		return 0;
@@ -641,7 +641,7 @@ int invalidate_partitions(struct gendisk *disk, struct block_device *bdev) 
		return res;



	set_capacity(disk, 0);

	check_disk_size_change(disk, bdev);

	check_disk_size_change(disk, bdev, false);

	bdev->bd_invalidated = 0;

	/* tell userspace that the media / partition table may have changed */

	kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);

fs/block_dev.c

+9 −5
Original line number Diff line number Diff line
@@ -1322,21 +1322,25 @@ static void flush_disk(struct block_device *bdev, bool kill_dirty) 
 * check_disk_size_change - checks for disk size change and adjusts bdev size.

 * @disk: struct gendisk to check

 * @bdev: struct bdev to adjust.

 * @verbose: if %true log a message about a size change if there is any

 *

 * This routine checks to see if the bdev size does not match the disk size

 * and adjusts it if it differs. When shrinking the bdev size, its all caches

 * are freed.

 */

void check_disk_size_change(struct gendisk *disk, struct block_device *bdev)

void check_disk_size_change(struct gendisk *disk, struct block_device *bdev,

		bool verbose)

{

	loff_t disk_size, bdev_size;



	disk_size = (loff_t)get_capacity(disk) << 9;

	bdev_size = i_size_read(bdev->bd_inode);

	if (disk_size != bdev_size) {

		if (verbose) {

			printk(KERN_INFO

			       "%s: detected capacity change from %lld to %lld\n",

			       disk->disk_name, bdev_size, disk_size);

		}

		i_size_write(bdev->bd_inode, disk_size);

		if (bdev_size > disk_size)

			flush_disk(bdev, false);
@@ -1363,7 +1367,7 @@ int revalidate_disk(struct gendisk *disk) 
		return ret;



	mutex_lock(&bdev->bd_mutex);

	check_disk_size_change(disk, bdev);

	check_disk_size_change(disk, bdev, ret == 0);

	bdev->bd_invalidated = 0;

	mutex_unlock(&bdev->bd_mutex);

	bdput(bdev);

include/linux/fs.h

+1 −1
Original line number Diff line number Diff line
@@ -2570,7 +2570,7 @@ extern bool is_bad_inode(struct inode *); 


#ifdef CONFIG_BLOCK

extern void check_disk_size_change(struct gendisk *disk,

				   struct block_device *bdev);

		struct block_device *bdev, bool verbose);

extern int revalidate_disk(struct gendisk *);

extern int check_disk_change(struct block_device *);

extern int __invalidate_device(struct block_device *, bool);