diff options
| -rw-r--r-- | block/blk-core.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 3515a66022d7..514838ccab2d 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1384,26 +1384,22 @@ void blk_steal_bios(struct bio_list *list, struct request *rq) EXPORT_SYMBOL_GPL(blk_steal_bios); /** - * blk_update_request - Special helper function for request stacking drivers + * blk_update_request - Complete multiple bytes without completing the request * @req: the request being processed * @error: block status code - * @nr_bytes: number of bytes to complete @req + * @nr_bytes: number of bytes to complete for @req * * Description: * Ends I/O on a number of bytes attached to @req, but doesn't complete * the request structure even if @req doesn't have leftover. * If @req has leftover, sets it up for the next range of segments. * - * This special helper function is only for request stacking drivers - * (e.g. request-based dm) so that they can handle partial completion. - * Actual device drivers should use blk_mq_end_request instead. - * * Passing the result of blk_rq_bytes() as @nr_bytes guarantees * %false return from this function. * * Note: - * The RQF_SPECIAL_PAYLOAD flag is ignored on purpose in both - * blk_rq_bytes() and in blk_update_request(). + * The RQF_SPECIAL_PAYLOAD flag is ignored on purpose in this function + * except in the consistency check at the end of this function. * * Return: * %false - this request doesn't have any more data |