Subject: [merged] lib-idrc-use-rcu_init_pointerx-null.patch removed from -mm tree To: monamagarwal123@xxxxxxxxx,tj@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Tue, 08 Apr 2014 14:24:53 -0700 The patch titled Subject: lib/idr.c: use RCU_INIT_POINTER(x, NULL) has been removed from the -mm tree. Its filename was lib-idrc-use-rcu_init_pointerx-null.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Monam Agarwal <monamagarwal123@xxxxxxxxx> Subject: lib/idr.c: use RCU_INIT_POINTER(x, NULL) Replace 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 <monamagarwal123@xxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/idr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN lib/idr.c~lib-idrc-use-rcu_init_pointerx-null lib/idr.c --- a/lib/idr.c~lib-idrc-use-rcu_init_pointerx-null +++ a/lib/idr.c @@ -533,7 +533,7 @@ static void sub_remove(struct idr *idp, 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) @@ -602,7 +602,7 @@ static void __idr_remove_all(struct idr 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; _ Patches currently in -mm which might be from monamagarwal123@xxxxxxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html