majianpeng <majianpeng@xxxxxxxxx> writes:
> When remove gendisk, set the size of inode of block_device to zero.
> This is mainly let the vfs know disk removed.
>
> Signed-off-by: Jianpeng Ma <majianpeng@xxxxxxxxx>
Reviewed-by: Jeff Moyer <jmoyer@xxxxxxxxxx>
> ---
> block/genhd.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/block/genhd.c b/block/genhd.c
> index dadf42b..9a4c245 100644
> --- a/block/genhd.c
> +++ b/block/genhd.c
> @@ -1369,6 +1369,12 @@ int invalidate_partition(struct gendisk *disk, int partno)
> if (bdev) {
> fsync_bdev(bdev);
> res = __invalidate_device(bdev, true);
> + /*
> + * When used buffer-mode on raw blockdevice,the disk removed.
> + * But the vfs don't know.So tell the vfs size of disk
> + * became zero, the buffer write can return
> + */
> + i_size_write(bdev->bd_inode, 0);
> bdput(bdev);
> }
> return res;
--
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