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Subject[PATCH] pstore/ram: Use reminder directly
Date
From: Deyan Wang <wonder_rock@126.com>

The remainder is more efficient, we directly use the remainder.

Signed-off-by: Deyan Wang <wonder_rock@126.com>
---
fs/pstore/ram_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c
index fe5305028c6e..69928a59e28b 100644
--- a/fs/pstore/ram_core.c
+++ b/fs/pstore/ram_core.c
@@ -61,8 +61,8 @@ static size_t buffer_start_add(struct persistent_ram_zone *prz, size_t a)

old = atomic_read(&prz->buffer->start);
new = old + a;
- while (unlikely(new >= prz->buffer_size))
- new -= prz->buffer_size;
+ if (unlikely(new >= prz->buffer_size))
+ new %= prz->buffer_size;
atomic_set(&prz->buffer->start, new);

if (!(prz->flags & PRZ_FLAG_NO_LOCK))
--
2.25.1
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