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authorVasily Averin <[email protected]>2021-09-02 14:55:31 -0700
committerLinus Torvalds <[email protected]>2021-09-03 09:58:12 -0700
commit18319498fdd4cdf8c1c2c48cd432863b1f915d6f (patch)
tree5a2808fc326ce472382f2c884c3503af1c8d0a38
parent30acd0bdfb86548172168a0cc71d455944de0683 (diff)
memcg: enable accounting of ipc resources
When user creates IPC objects it forces kernel to allocate memory for these long-living objects. It makes sense to account them to restrict the host's memory consumption from inside the memcg-limited container. This patch enables accounting for IPC shared memory segments, messages semaphores and semaphore's undo lists. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Vasily Averin <[email protected]> Reviewed-by: Shakeel Butt <[email protected]> Cc: Alexander Viro <[email protected]> Cc: Alexey Dobriyan <[email protected]> Cc: Andrei Vagin <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Christian Brauner <[email protected]> Cc: Dmitry Safonov <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "J. Bruce Fields" <[email protected]> Cc: Jeff Layton <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Jiri Slaby <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Kirill Tkhai <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Roman Gushchin <[email protected]> Cc: Serge Hallyn <[email protected]> Cc: Tejun Heo <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vladimir Davydov <[email protected]> Cc: Yutian Yang <[email protected]> Cc: Zefan Li <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
-rw-r--r--ipc/msg.c2
-rw-r--r--ipc/sem.c9
-rw-r--r--ipc/shm.c2
3 files changed, 7 insertions, 6 deletions
diff --git a/ipc/msg.c b/ipc/msg.c
index 6810276d6bb9..a0d05775af2c 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -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 = kmalloc(sizeof(*msq), GFP_KERNEL);
+ msq = kmalloc(sizeof(*msq), GFP_KERNEL_ACCOUNT);
if (unlikely(!msq))
return -ENOMEM;
diff --git a/ipc/sem.c b/ipc/sem.c
index 971e75d28364..1a8b9f0ac047 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -514,7 +514,7 @@ static struct sem_array *sem_alloc(size_t nsems)
if (nsems > (INT_MAX - sizeof(*sma)) / sizeof(sma->sems[0]))
return NULL;
- sma = kvzalloc(struct_size(sma, sems, nsems), GFP_KERNEL);
+ sma = kvzalloc(struct_size(sma, sems, nsems), GFP_KERNEL_ACCOUNT);
if (unlikely(!sma))
return NULL;
@@ -1855,7 +1855,7 @@ static inline int get_undo_list(struct sem_undo_list **undo_listp)
undo_list = current->sysvsem.undo_list;
if (!undo_list) {
- undo_list = kzalloc(sizeof(*undo_list), GFP_KERNEL);
+ undo_list = kzalloc(sizeof(*undo_list), GFP_KERNEL_ACCOUNT);
if (undo_list == NULL)
return -ENOMEM;
spin_lock_init(&undo_list->lock);
@@ -1941,7 +1941,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
/* step 2: allocate new undo structure */
new = kvzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems,
- GFP_KERNEL);
+ GFP_KERNEL_ACCOUNT);
if (!new) {
ipc_rcu_putref(&sma->sem_perm, sem_rcu_free);
return ERR_PTR(-ENOMEM);
@@ -2005,7 +2005,8 @@ static long do_semtimedop(int semid, struct sembuf __user *tsops,
if (nsops > ns->sc_semopm)
return -E2BIG;
if (nsops > SEMOPM_FAST) {
- sops = kvmalloc_array(nsops, sizeof(*sops), GFP_KERNEL);
+ sops = kvmalloc_array(nsops, sizeof(*sops),
+ GFP_KERNEL_ACCOUNT);
if (sops == NULL)
return -ENOMEM;
}
diff --git a/ipc/shm.c b/ipc/shm.c
index 748933e376ca..ab749be6d8b7 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -619,7 +619,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
ns->shm_tot + numpages > ns->shm_ctlall)
return -ENOSPC;
- shp = kmalloc(sizeof(*shp), GFP_KERNEL);
+ shp = kmalloc(sizeof(*shp), GFP_KERNEL_ACCOUNT);
if (unlikely(!shp))
return -ENOMEM;