block/blk-iocost (gcc13): keep large values in a new enum
authorJiri Slaby (SUSE) <jirislaby@kernel.org>
Tue, 13 Dec 2022 12:08:26 +0000 (13:08 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 11 May 2023 14:03:42 +0000 (23:03 +0900)
commit245653ed73e34bae95bc8f27c82fa56757d37946
treeb7a0f6a613c55efb2caf1c881c228a1c482efa9f
parent40db6d172b1f9b6394d20011775976399ed3de32
block/blk-iocost (gcc13): keep large values in a new enum

commit ff1cc97b1f4c10db224f276d9615b22835b8c424 upstream.

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,
  ...
  AUTOP_CYCLE_NSEC        = 10LLU * NSEC_PER_SEC,
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'

So split the anonymous enum with large values to a separate enum, so
that they don't affect other members.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36113

Cc: Martin Liska <mliska@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: cgroups@vger.kernel.org
Cc: linux-block@vger.kernel.org
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20221213120826.17446-1-jirislaby@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
block/blk-iocost.c