* [PATCH -next v5] staging: fwserial: Switch to kfree_rcu() API
@ 2022-09-19 13:43 Shang XiaoJing
0 siblings, 0 replies; only message in thread
From: Shang XiaoJing @ 2022-09-19 13:43 UTC (permalink / raw)
To: gregkh, andy.shevchenko, ilpo.jarvinen, linux-staging; +Cc: shangxiaojing
Instead of invoking a synchronize_rcu() to free a pointer after a grace
period, we can directly make use of a new API that does the same but in
a more efficient way.
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
---
Changelog:
v3: the first version of the PATCH
v1: v3 resent as v1
v2: use kfree_rcu() instead of kvfree_rcu() for clarity
v4: resend v2 as v4 to avoid versioning confusion
v5: add the rcu_head of fwtty_peer as the input param for wider usage
---
drivers/staging/fwserial/fwserial.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index 81b06d88ed0d..15e85fa8af07 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -2117,8 +2117,7 @@ static void fwserial_remove_peer(struct fwtty_peer *peer)
if (port)
fwserial_release_port(port, true);
- synchronize_rcu();
- kfree(peer);
+ kfree_rcu(peer, rcu);
}
/**
--
2.17.1
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