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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2017-07-10 15:50:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-10 16:32:33 -0700
commitf5bd62cd44119a11a30976f6a97f4aab2c35a097 (patch)
tree68e0244e8e8494b8306d6e21192eccb17cf77fdc /mm/kasan
parentfa69b5989bb0031efa96f2f4ff49caf6532a0970 (diff)
downloadop-kernel-dev-f5bd62cd44119a11a30976f6a97f4aab2c35a097.zip
op-kernel-dev-f5bd62cd44119a11a30976f6a97f4aab2c35a097.tar.gz
mm/kasan/kasan.c: rename XXX_is_zero to XXX_is_nonzero
They return positive value, that is, true, if non-zero value is found. Rename them to reduce confusion. Link: http://lkml.kernel.org/r/20170516012350.GA16015@js1304-desktop Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan')
-rw-r--r--mm/kasan/kasan.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c
index 509974a..ca11bc4 100644
--- a/mm/kasan/kasan.c
+++ b/mm/kasan/kasan.c
@@ -160,7 +160,7 @@ static __always_inline bool memory_is_poisoned_16(unsigned long addr)
return *shadow_addr;
}
-static __always_inline unsigned long bytes_is_zero(const u8 *start,
+static __always_inline unsigned long bytes_is_nonzero(const u8 *start,
size_t size)
{
while (size) {
@@ -173,7 +173,7 @@ static __always_inline unsigned long bytes_is_zero(const u8 *start,
return 0;
}
-static __always_inline unsigned long memory_is_zero(const void *start,
+static __always_inline unsigned long memory_is_nonzero(const void *start,
const void *end)
{
unsigned int words;
@@ -181,11 +181,11 @@ static __always_inline unsigned long memory_is_zero(const void *start,
unsigned int prefix = (unsigned long)start % 8;
if (end - start <= 16)
- return bytes_is_zero(start, end - start);
+ return bytes_is_nonzero(start, end - start);
if (prefix) {
prefix = 8 - prefix;
- ret = bytes_is_zero(start, prefix);
+ ret = bytes_is_nonzero(start, prefix);
if (unlikely(ret))
return ret;
start += prefix;
@@ -194,12 +194,12 @@ static __always_inline unsigned long memory_is_zero(const void *start,
words = (end - start) / 8;
while (words) {
if (unlikely(*(u64 *)start))
- return bytes_is_zero(start, 8);
+ return bytes_is_nonzero(start, 8);
start += 8;
words--;
}
- return bytes_is_zero(start, (end - start) % 8);
+ return bytes_is_nonzero(start, (end - start) % 8);
}
static __always_inline bool memory_is_poisoned_n(unsigned long addr,
@@ -207,7 +207,7 @@ static __always_inline bool memory_is_poisoned_n(unsigned long addr,
{
unsigned long ret;
- ret = memory_is_zero(kasan_mem_to_shadow((void *)addr),
+ ret = memory_is_nonzero(kasan_mem_to_shadow((void *)addr),
kasan_mem_to_shadow((void *)addr + size - 1) + 1);
if (unlikely(ret)) {
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