Ping On Wed, Sep 22, 2021 at 8:37 PM Xie Yongji <xieyongji@xxxxxxxxxxxxx> wrote: > > This series comes from Christoph Hellwig's suggestion [1]. Some block > device drivers such as loop driver and nbd driver need to invalidate > the gendisk when the backend is detached so that the gendisk can be > reused by the new backend. Now the invalidation is done in device > driver with their own ways. To avoid code duplication and hide > some internals of the implementation, this series adds a block layer > helper and makes both loop driver and nbd driver use it. > > [1] https://lore.kernel.org/all/YTmqJHd7YWAQ2lZ7@xxxxxxxxxxxxx/ > > V1 to V2: > - Rename invalidate_gendisk() to invalidate_disk() > - Add a cleanup patch to remove bdev checks and bdev variable in __loop_clr_fd() > > Xie Yongji (4): > block: Add invalidate_disk() helper to invalidate the gendisk > loop: Use invalidate_disk() helper to invalidate gendisk > loop: Remove the unnecessary bdev checks and unused bdev variable > nbd: Use invalidate_disk() helper on disconnect > > block/genhd.c | 20 ++++++++++++++++++++ > drivers/block/loop.c | 15 ++++----------- > drivers/block/nbd.c | 12 +++--------- > include/linux/genhd.h | 2 ++ > 4 files changed, 29 insertions(+), 20 deletions(-) > > -- > 2.11.0 >
