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authorVasily Averin <vvs@virtuozzo.com>2021-06-30 18:57:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-01 11:06:07 -0700
commitbc8136a543aa839a848b49af5e101ac6de5f6b27 (patch)
tree15cb33e272fc047763557e7a82710e576d632853 /ipc/msg.c
parentfc37a3b8b4388e73e8e3525556d9f1feeb232bb9 (diff)
ipc: use kmalloc for msg_queue and shmid_kernel
msg_queue and shmid_kernel are quite small objects, no need to use kvmalloc for them. mhocko@: "Both of them are 256B on most 64b systems." Previously these objects was allocated via ipc_alloc/ipc_rcu_alloc(), common function for several ipc objects. It had kvmalloc call inside(). Later, this function went away and was finally replaced by direct kvmalloc call, and now we can use more suitable kmalloc/kfree for them. Link: https://lkml.kernel.org/r/0d0b6c9b-8af3-29d8-34e2-a565c53780f3@virtuozzo.com Reported-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/msg.c')
-rw-r--r--ipc/msg.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/ipc/msg.c b/ipc/msg.c
index 6e6c8e0c9380..6810276d6bb9 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -130,7 +130,7 @@ static void msg_rcu_free(struct rcu_head *head)
struct msg_queue *msq = container_of(p, struct msg_queue, q_perm);
security_msg_queue_free(&msq->q_perm);
- kvfree(msq);
+ kfree(msq);
}
/**
@@ -147,7 +147,7 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
key_t key = params->key;
int msgflg = params->flg;
- msq = kvmalloc(sizeof(*msq), GFP_KERNEL);
+ msq = kmalloc(sizeof(*msq), GFP_KERNEL);
if (unlikely(!msq))
return -ENOMEM;
@@ -157,7 +157,7 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
msq->q_perm.security = NULL;
retval = security_msg_queue_alloc(&msq->q_perm);
if (retval) {
- kvfree(msq);
+ kfree(msq);
return retval;
}