On Wed, Feb 13, 2019 at 3:12 AM Greg KH <gre...@linuxfoundation.org> wrote: > > On Wed, Feb 13, 2019 at 02:54:43AM +0800, Xiang Xiao wrote: > > Here is the detailed description for memrchr: > > > > void *memrchr(const void *s, int c, size_t n); > > > > The memrchr() function is like the memchr() function, except > > that it searches backward from the end of the n bytes pointed > > to by s instead of forward from the beginning. > > > > The memrchr() functions return a pointer to the matching byte > > or NULL if the character does not occur in the given memory > > area. > > > > Signed-off-by: Xiang Xiao <xiaoxi...@xiaomi.com> > > --- > > include/linux/string.h | 1 + > > lib/string.c | 21 +++++++++++++++++++++ > > 2 files changed, 22 insertions(+) > > > > diff --git a/include/linux/string.h b/include/linux/string.h > > index 7927b87..f380f4b 100644 > > --- a/include/linux/string.h > > +++ b/include/linux/string.h > > @@ -167,6 +167,7 @@ static inline void memcpy_flushcache(void *dst, const > > void *src, size_t cnt) > > memcpy(dst, src, cnt); > > } > > #endif > > +void *memrchr(const void *s, int c, size_t n); > > void *memchr_inv(const void *s, int c, size_t n); > > char *strreplace(char *s, char old, char new); > > Also, if you really need this, why not also provide the arch-specific > versions as well? >
Good point, I will make the arch-specific overwrite possible. > thanks, > > greg k-h
