diff options
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 90d085290d49..4bf95e36ed16 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1267,13 +1267,12 @@ int mm_account_pinned_pages(struct mmpin *mmp, size_t size) max_pg = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT; user = mmp->user ? : current_user(); + old_pg = atomic_long_read(&user->locked_vm); do { - old_pg = atomic_long_read(&user->locked_vm); new_pg = old_pg + num_pg; if (new_pg > max_pg) return -ENOBUFS; - } while (atomic_long_cmpxchg(&user->locked_vm, old_pg, new_pg) != - old_pg); + } while (!atomic_long_try_cmpxchg(&user->locked_vm, &old_pg, new_pg)); if (!mmp->user) { mmp->user = get_uid(user); |