* [PATCH] md/bitmap: Use 'atomic_inc_return' instead of hand-writing it
@ 2021-07-23 12:21 Christophe JAILLET
0 siblings, 0 replies; only message in thread
From: Christophe JAILLET @ 2021-07-23 12:21 UTC (permalink / raw)
To: song, linux-raid; +Cc: linux-kernel, kernel-janitors, Christophe JAILLET
'atomic_inc/atomic_read' is equivalent to 'atomic_inc_return' which is
less verbose.
So use the later.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
First time a play with atomic functions, so apologies if I misunderstood
something
---
drivers/md/md-bitmap.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index e29c6298ef5c..9d47a2ca1cf3 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -1396,8 +1396,8 @@ int md_bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long s
if (behind) {
int bw;
- atomic_inc(&bitmap->behind_writes);
- bw = atomic_read(&bitmap->behind_writes);
+
+ bw = atomic_inc_return(&bitmap->behind_writes);
if (bw > bitmap->behind_writes_used)
bitmap->behind_writes_used = bw;
--
2.30.2
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