[PATCH 0/4] sysctl: move sysctl type to ctl_table_header

["Thomas Weißschuh" <linux@weissschuh.net>]

Praparation series to enable constification of struct ctl_table further
down the line.
No functional changes are intended.

These changes have been split out and reworked from my original
const sysctl patchset [0].
I'm resubmitting the patchset in smaller chunks for easier review.
Each split-out series is meant to be useful on its own.

Changes since the original series:
* Explicit initializartion of header->type in init_header()
* Some additional cleanups

[0] https://lore.kernel.org/lkml/20231204-const-sysctl-v2-0-7a5060b11447@weissschuh.net/

---
Thomas Weißschuh (4):
      sysctl: drop sysctl_is_perm_empty_ctl_table
      sysctl: move sysctl type to ctl_table_header
      sysctl: drop now unnecessary out-of-bounds check
      sysctl: remove unnecessary sentinel element

 fs/proc/proc_sysctl.c  | 19 ++++++++-----------
 include/linux/sysctl.h | 22 +++++++++++-----------
 2 files changed, 19 insertions(+), 22 deletions(-)
---
base-commit: b401b621758e46812da61fa58a67c3fd8d91de0d
change-id: 20231216-sysctl-empty-dir-71d7631f7bfe

Best regards,
-- 
Thomas Weißschuh <linux@weissschuh.net>