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| author | Alejandro Colomar <alx.manpages@gmail.com> | 2021-11-18 18:55:47 +0100 |
|---|---|---|
| committer | Alejandro Colomar <alx.manpages@gmail.com> | 2021-11-18 21:00:01 +0100 |
| commit | 28735ed756061b29d790fdd7846a351d379919fa (patch) | |
| tree | 192d77569443929117891de029dceb6d16c6bc1e | |
| parent | 42eb8fdac2fc5d62392dcfcf0253753e821a97b0 (diff) | |
linux/container_of.h: Add memberof(T, m)
Many xxxof_member() macros make use of the same construction
to refer to a member of a struct
without needing a variable of the struct type.
memberof(T, m)
simplifies all of those,
avoids possible mistakes in repetition,
adds a meaningful name to the construction,
and improves readability by avoiding too many parentheses together.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Corey Minyard <cminyard@mvista.com>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
| -rw-r--r-- | include/linux/container_of.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/container_of.h b/include/linux/container_of.h index 2f4944b791b8..199c78a3bf29 100644 --- a/include/linux/container_of.h +++ b/include/linux/container_of.h @@ -5,6 +5,9 @@ #include <linux/build_bug.h> #include <linux/err.h> + +#define memberof(T, m) (((T *) NULL)->m) + #define typeof_member(T, m) typeof(((T*)0)->m) /** |