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Message-Id: <20200428205903.61704-13-urezki@gmail.com>
Date: Tue, 28 Apr 2020 22:58:51 +0200
From: "Uladzislau Rezki (Sony)" <urezki@...il.com>
To: LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
"Paul E . McKenney" <paulmck@...nel.org>,
"Theodore Y . Ts'o" <tytso@....edu>,
Matthew Wilcox <willy@...radead.org>,
Joel Fernandes <joel@...lfernandes.org>,
RCU <rcu@...r.kernel.org>, Uladzislau Rezki <urezki@...il.com>,
Oleksiy Avramchenko <oleksiy.avramchenko@...ymobile.com>
Subject: [PATCH 12/24] rcu/tiny: support vmalloc in tiny-RCU
Replace kfree() with kvfree() in rcu_reclaim_tiny().
So it becomes possible to release either SLAB memory
or vmalloc one after a GP.
Signed-off-by: Uladzislau Rezki (Sony) <urezki@...il.com>
---
kernel/rcu/tiny.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index dd572ce7c747..4b99f7b88bee 100644
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -23,6 +23,7 @@
#include <linux/cpu.h>
#include <linux/prefetch.h>
#include <linux/slab.h>
+#include <linux/mm.h>
#include "rcu.h"
@@ -86,7 +87,7 @@ static inline bool rcu_reclaim_tiny(struct rcu_head *head)
rcu_lock_acquire(&rcu_callback_map);
if (__is_kfree_rcu_offset(offset)) {
trace_rcu_invoke_kfree_callback("", head, offset);
- kfree((void *)head - offset);
+ kvfree((void *)head - offset);
rcu_lock_release(&rcu_callback_map);
return true;
}
--
2.20.1
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