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Date: Fri, 24 Feb 2017 13:14:52 +0000 From: David Howells <dhowells@...hat.com> To: viro@...IV.linux.org.uk Cc: dhowells@...hat.com, Andreea-Cristina Bernat <bernat.ada@...il.com>, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-afs@...ts.infradead.org Subject: [PATCH 12/14] afs: security: Replace rcu_assign_pointer() with RCU_INIT_POINTER() From: Andreea-Cristina Bernat <bernat.ada@...il.com> The use of "rcu_assign_pointer()" is NULLing out the pointer. According to RCU_INIT_POINTER()'s block comment: "1. This use of RCU_INIT_POINTER() is NULLing out the pointer" it is better to use it instead of rcu_assign_pointer() because it has a smaller overhead. The following Coccinelle semantic patch was used: @@ @@ - rcu_assign_pointer + RCU_INIT_POINTER (..., NULL) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@...il.com> Signed-off-by: David Howells <dhowells@...hat.com> --- fs/afs/security.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/afs/security.c b/fs/afs/security.c index bfa9d3428383..ecb86a670180 100644 --- a/fs/afs/security.c +++ b/fs/afs/security.c @@ -114,7 +114,7 @@ void afs_clear_permits(struct afs_vnode *vnode) mutex_lock(&vnode->permits_lock); permits = vnode->permits; - rcu_assign_pointer(vnode->permits, NULL); + RCU_INIT_POINTER(vnode->permits, NULL); mutex_unlock(&vnode->permits_lock); if (permits)
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