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....@gmail.com>
---
fs/nfs/delegation.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 5d8ccec..349e63b 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -249,7 +249,7 @@ nfs_detach_delegation_locked(struct nfs_inode *nfsi,
list_del_rcu(&delegation->super_list);
delegation->inode = NULL;
nfsi->delegation_state = 0;
- rcu_assign_pointer(nfsi->delegation, NULL);
+ RCU_INIT_POINTER(nfsi->delegation, NULL);
spin_unlock(&delegation->lock);
return delegation;
}
--
1.9.1
--
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