The patch titled
Subject: linux/kernel.h: use 'short' to define USHRT_MAX, SHRT_MAX, SHRT_MIN
has been added to the -mm tree. Its filename is
linux-kernelh-use-short-to-define-ushrt_max-shrt_max-shrt_min.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/linux-kernelh-use-short-to-define-ushrt_max-shrt_max-shrt_min.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/linux-kernelh-use-short-to-define-ushrt_max-shrt_max-shrt_min.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Subject: linux/kernel.h: use 'short' to define USHRT_MAX, SHRT_MAX, SHRT_MIN
The commit log of 44f564a4bf6a ("ipc: add definitions of USHORT_MAX and
others") did not explain why it used (s16) and (u16) instead of (short)
and (unsigned short).
Let's use (short) and (unsigned short), which is more sensible, and more
consistent with the other MAX/MIN defines.
As you see in include/uapi/asm-generic/int-ll64.h, s16/u16 are typedef'ed
as signed/unsigned short. So, this commit does not have a functional
change.
Remove the unneeded parentheses around ~0U while we are here.
Link: http://lkml.kernel.org/r/1549156242-20806-1-git-send-email-yamada.masahiro@xxxxxxxxxxxxx
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Zhang Yanmin <yanmin.zhang@xxxxxxxxx>
Cc: Alex Elder <elder@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/include/linux/kernel.h~linux-kernelh-use-short-to-define-ushrt_max-shrt_max-shrt_min
+++ a/include/linux/kernel.h
@@ -17,9 +17,9 @@
#include <asm/div64.h>
#include <uapi/linux/kernel.h>
-#define USHRT_MAX ((u16)(~0U))
-#define SHRT_MAX ((s16)(USHRT_MAX>>1))
-#define SHRT_MIN ((s16)(-SHRT_MAX - 1))
+#define USHRT_MAX ((unsigned short)~0U)
+#define SHRT_MAX ((short)(USHRT_MAX>>1))
+#define SHRT_MIN ((short)(-SHRT_MAX - 1))
#define INT_MAX ((int)(~0U>>1))
#define INT_MIN (-INT_MAX - 1)
#define UINT_MAX (~0U)
_
Patches currently in -mm which might be from yamada.masahiro@xxxxxxxxxxxxx are
rename-include-uapi-=-asm-generic-shmparamh-really.patch
linux-kernelh-use-short-to-define-ushrt_max-shrt_max-shrt_min.patch
linux-kernelh-split-_max-and-_min-macros-into-linux-limitsh.patch
