On 2021/11/19 8:57, Tadeusz Struk wrote:
From: Xie Yongji xieyongji@bytedance.com
From: Xie Yongji xieyongji@bytedance.com
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@bytedance.com Link: https://lore.kernel.org/r/20211026144015.188-2-xieyongji@bytedance.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Tadeusz Struk tadeusz.struk@linaro.org
include/linux/blkdev.h | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 683aee365420..5b03795ae33b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -54,6 +54,14 @@ struct blk_keyslot_manager; */ #define BLKCG_MAX_POLS 6 +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); /*
But where is this used in 5.15 ? I do not see any callers for this. So why backport it ?