ASoC: Intel: kconfig: add some comments for if symbols

[linux.git] / ipc / shm.c

diff --git a/ipc/shm.c b/ipc/shm.c
index badac463e2c8ea7a035c73acd385d4d58211e6ac..7acda23430aa04c14a5466946cc141c60f5627a5 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/ipc/shm.c
  * Copyright (C) 1992, 1993 Krishna Balasubramanian
@@ -600,6 +601,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
        shp->shm_file = file;
        shp->shm_creator = current;
 
+       /* ipc_addid() locks shp upon success. */
        error = ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
        if (error < 0)
                goto no_id;
@@ -1193,10 +1195,10 @@ static int copy_compat_shmid_from_user(struct shmid64_ds *out, void __user *buf,
 {
        memset(out, 0, sizeof(*out));
        if (version == IPC_64) {
-               struct compat_shmid64_ds *p = buf;
+               struct compat_shmid64_ds __user *p = buf;
                return get_compat_ipc64_perm(&out->shm_perm, &p->shm_perm);
        } else {
-               struct compat_shmid_ds *p = buf;
+               struct compat_shmid_ds __user *p = buf;
                return get_compat_ipc_perm(&out->shm_perm, &p->shm_perm);
        }
 }