Since gcc13, each member of an enum has the same type as the enum [1]. And that is inherited from its members. Provided: VTIME_PER_SEC_SHIFT = 37, VTIME_PER_SEC = 1LLU << VTIME_PER_SEC_SHIFT, the named type is unsigned long. This generates warnings with gcc-13: block/blk-iocost.c: In function 'ioc_weight_prfill': block/blk-iocost.c:3037:37: error: format '%u' expects argument of type 'unsigned int', but argument 4 has type 'long unsigned int' block/blk-iocost.c: In function 'ioc_weight_show': block/blk-iocost.c:3047:34: error: format '%u' expects argument of type 'unsigned int', but argument 3 has type 'long unsigned int' Cast the enum members to int when printing them. Alternatively, we can cast them to ulong (to silence gcc < 12) and use %lu. Alternatively, we can move VTIME_PER_SEC away from the enum. [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36113 Cc: Martin Liska <mliska@xxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Josef Bacik <josef@xxxxxxxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: cgroups@xxxxxxxxxxxxxxx Cc: linux-block@xxxxxxxxxxxxxxx Signed-off-by: Jiri Slaby (SUSE) <jirislaby@xxxxxxxxxx> --- block/blk-iocost.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/block/blk-iocost.c b/block/blk-iocost.c index f01359906c83..a257ba17183b 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -3034,7 +3034,8 @@ static u64 ioc_weight_prfill(struct seq_file *sf, struct blkg_policy_data *pd, struct ioc_gq *iocg = pd_to_iocg(pd); if (dname && iocg->cfg_weight) - seq_printf(sf, "%s %u\n", dname, iocg->cfg_weight / WEIGHT_ONE); + seq_printf(sf, "%s %d\n", dname, + iocg->cfg_weight / (int)WEIGHT_ONE); return 0; } @@ -3044,7 +3045,8 @@ static int ioc_weight_show(struct seq_file *sf, void *v) struct blkcg *blkcg = css_to_blkcg(seq_css(sf)); struct ioc_cgrp *iocc = blkcg_to_iocc(blkcg); - seq_printf(sf, "default %u\n", iocc->dfl_weight / WEIGHT_ONE); + seq_printf(sf, "default %d\n", + iocc->dfl_weight / (int)WEIGHT_ONE); blkcg_print_blkgs(sf, blkcg, ioc_weight_prfill, &blkcg_policy_iocost, seq_cft(sf)->private, false); return 0; -- 2.38.1
