diff options
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 42 |
1 files changed, 29 insertions, 13 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 1e6441dbe840..9bfe37f394bd 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1312,6 +1312,34 @@ static void check_disk_size_change(struct gendisk *disk, } /** + * revalidate_disk_size - checks for disk size change and adjusts bdev size. + * @disk: struct gendisk to check + * @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 revalidate_disk_size(struct gendisk *disk, bool verbose) +{ + struct block_device *bdev; + + /* + * Hidden disks don't have associated bdev so there's no point in + * revalidating them. + */ + if (disk->flags & GENHD_FL_HIDDEN) + return; + + bdev = bdget_disk(disk, 0); + if (bdev) { + check_disk_size_change(disk, bdev, verbose); + bdput(bdev); + } +} +EXPORT_SYMBOL(revalidate_disk_size); + +/** * revalidate_disk - wrapper for lower-level driver's revalidate_disk call-back * @disk: struct gendisk to be revalidated * @@ -1325,19 +1353,7 @@ int revalidate_disk(struct gendisk *disk) if (disk->fops->revalidate_disk) ret = disk->fops->revalidate_disk(disk); - - /* - * Hidden disks don't have associated bdev so there's no point in - * revalidating it. - */ - if (!(disk->flags & GENHD_FL_HIDDEN)) { - struct block_device *bdev = bdget_disk(disk, 0); - - if (bdev) { - check_disk_size_change(disk, bdev, ret == 0); - bdput(bdev); - } - } + revalidate_disk_size(disk, ret == 0); return ret; } EXPORT_SYMBOL(revalidate_disk); |