BLK_STS_AGAIN should only be used if RQF_NOWAIT is set and the bio would block. So we'd better document that to avoid accidental misuse. Signed-off-by: Hannes Reinecke <hare@xxxxxxx> --- include/linux/blk_types.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 1973ef9bd40f..8fb8f79cb74e 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -105,6 +105,10 @@ typedef u16 blk_short_t; /* hack for device mapper, don't use elsewhere: */ #define BLK_STS_DM_REQUEUE ((__force blk_status_t)11) +/* + * BLK_STS_AGAIN should only be returned if RQF_NOWAIT is set + * and the bio would block (cf bio_wouldblock_error()) + */ #define BLK_STS_AGAIN ((__force blk_status_t)12) /* -- 2.29.2
