On Wed, 30 Mar 2022, Lee Jones wrote: > From: Xie Yongji <xieyongji@xxxxxxxxxxxxx> > > [ Upstream commit 570b1cac477643cbf01a45fa5d018430a1fddbce ] > > There are some duplicated codes to validate the block > size in block drivers. This limitation actually comes > from block layer, so this patch tries to add a new block > layer helper for that. > > Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx> > Link: https://lore.kernel.org/r/20211026144015.188-2-xieyongji@xxxxxxxxxxxxx > Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> > Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> > --- > include/linux/blkdev.h | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index d5338b9ee5502..8cc766743270f 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -59,6 +59,14 @@ struct blk_stat_callback; > */ > #define BLKCG_MAX_POLS 5 > > +static inline int blk_validate_block_size(unsigned int bsize) > +{ > + if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize)) > + return -EINVAL; > + > + return 0; > +} > + > typedef void (rq_end_io_fn)(struct request *, blk_status_t); > > /* These 2 are for linux-5.4.y. -- Lee Jones [李琼斯] Principal Technical Lead - Developer Services Linaro.org │ Open source software for Arm SoCs Follow Linaro: Facebook | Twitter | Blog
