Message ID | 20200428205903.61704-13-urezki@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[94.245.46.49]) by smtp.gmail.com with ESMTPSA id z21sm295483ljh.42.2020.04.28.13.59.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2020 13:59:42 -0700 (PDT) From: "Uladzislau Rezki (Sony)" <urezki@gmail.com> To: LKML <linux-kernel@vger.kernel.org>, linux-mm@kvack.org Cc: Andrew Morton <akpm@linux-foundation.org>, "Paul E . McKenney" <paulmck@kernel.org>, "Theodore Y . Ts'o" <tytso@mit.edu>, Matthew Wilcox <willy@infradead.org>, Joel Fernandes <joel@joelfernandes.org>, RCU <rcu@vger.kernel.org>, Uladzislau Rezki <urezki@gmail.com>, Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Subject: [PATCH 12/24] rcu/tiny: support vmalloc in tiny-RCU Date: Tue, 28 Apr 2020 22:58:51 +0200 Message-Id: <20200428205903.61704-13-urezki@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200428205903.61704-1-urezki@gmail.com> References: <20200428205903.61704-1-urezki@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
Series |
Introduce kvfree_rcu(1 or 2 arguments)
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expand
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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; }
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@gmail.com> --- kernel/rcu/tiny.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)