This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL)
The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure.
And in the case of the NULL pointer, there is no structure to initialize.
So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p,
NULL)
Signed-off-by: Monam Agarwal <monamagarwal...@gmail.com>
---
lib/idr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/idr.c b/lib/idr.c
index bfe4db4..f804fbe 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -548,7 +548,7 @@ static void sub_remove(struct idr *idp, int shift, int id)
n = id & IDR_MASK;
if (likely(p != NULL && test_bit(n, p->bitmap))) {
__clear_bit(n, p->bitmap);
- rcu_assign_pointer(p->ary[n], NULL);
+ RCU_INIT_POINTER(p->ary[n], NULL);
to_free = NULL;
while(*paa && ! --((**paa)->count)){
if (to_free)
@@ -617,7 +617,7 @@ void __idr_remove_all(struct idr *idp)
n = idp->layers * IDR_BITS;
p = idp->top;
- rcu_assign_pointer(idp->top, NULL);
+ RCU_INIT_POINTER(idp->top, NULL);
max = idr_max(idp->layers);
id = 0;
--
1.7.9.5
--
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