* [PATCH] pstore/ram: Use reminder directly
@ 2022-01-24 14:42 wonder_rock
0 siblings, 0 replies; 2+ messages in thread
From: wonder_rock @ 2022-01-24 14:42 UTC (permalink / raw)
To: keescook, anton, ccross, tony.luck; +Cc: linux-kernel, Deyan Wang
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] pstore/ram: Use reminder directly
@ 2022-02-08 2:43 Deyan Wang
0 siblings, 0 replies; 2+ messages in thread
From: Deyan Wang @ 2022-02-08 2:43 UTC (permalink / raw)
To: keescook, anton, ccross, tony.luck; +Cc: linux-kernel, Deyan Wang
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-02-08 3:15 UTC | newest]
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2022-01-24 14:42 [PATCH] pstore/ram: Use reminder directly wonder_rock
2022-02-08 2:43 Deyan Wang
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