[PATCH] md/bitmap: Use 'atomic_inc_return' instead of hand-writing it
DORMANTno replies
From: Christophe JAILLET <hidden>
Date: 2021-07-23 12:22:10
Also in:
kernel-janitors, lkml
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
'atomic_inc/atomic_read' is equivalent to 'atomic_inc_return' which is less verbose. So use the later. Signed-off-by: Christophe JAILLET <redacted> --- 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