From 5afb78356cead66db2203061fed6fc8957527ed4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 29 May 2018 16:42:59 +0200 Subject: [PATCH] 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: Christoph Hellwig Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe --- block/partition-generic.c | 4 ++-- fs/block_dev.c | 14 +++++++++----- include/linux/fs.h | 2 +- 3 files changed, 12 insertions(+), 8 deletions(-) diff --git a/block/partition-generic.c b/block/partition-generic.c index 93ef8ce568a1..3dcfd4ec0e11 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -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); diff --git a/fs/block_dev.c b/fs/block_dev.c index 771ddfa29dc9..81c57c14fae8 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -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) { - printk(KERN_INFO - "%s: detected capacity change from %lld to %lld\n", - disk->disk_name, bdev_size, disk_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); diff --git a/include/linux/fs.h b/include/linux/fs.h index 760d8da1b6c7..d8d4831af9ff 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -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); -- GitLab