diff options
| author | Xie Yongji <xieyongji@bytedance.com> | 2021-09-22 20:37:08 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-21 10:12:41 -0600 |
| commit | f059a1d2e23a165bf86e33673c6a7535a08c6341 (patch) | |
| tree | c009d3e5c96d7848902627704c613bb324156dd4 /block | |
| parent | e94f68527a35271131cdf9d3fb4eb3c2513dc3d0 (diff) | |
block: Add invalidate_disk() helper to invalidate the gendisk
To hide internal implementation and simplify some driver code,
this adds a helper to invalidate the gendisk. It will clean the
gendisk's associated buffer/page caches and reset its internal
states.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210922123711.187-2-xieyongji@bytedance.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/genhd.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index 80943c123c3e..64f83c4aee99 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -624,6 +624,26 @@ void del_gendisk(struct gendisk *disk) } EXPORT_SYMBOL(del_gendisk); +/** + * invalidate_disk - invalidate the disk + * @disk: the struct gendisk to invalidate + * + * A helper to invalidates the disk. It will clean the disk's associated + * buffer/page caches and reset its internal states so that the disk + * can be reused by the drivers. + * + * Context: can sleep + */ +void invalidate_disk(struct gendisk *disk) +{ + struct block_device *bdev = disk->part0; + + invalidate_bdev(bdev); + bdev->bd_inode->i_mapping->wb_err = 0; + set_capacity(disk, 0); +} +EXPORT_SYMBOL(invalidate_disk); + /* sysfs access to bad-blocks list. */ static ssize_t disk_badblocks_show(struct device *dev, struct device_attribute *attr, |