diff options
| -rw-r--r-- | io_uring/rsrc.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c index 0250c13ae1cd..7f66b0e25674 100644 --- a/io_uring/rsrc.c +++ b/io_uring/rsrc.c @@ -56,14 +56,13 @@ static inline int __io_account_mem(struct user_struct *user, /* Don't allow more pages than we can safely lock */ page_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT; + cur_pages = atomic_long_read(&user->locked_vm); do { - cur_pages = atomic_long_read(&user->locked_vm); new_pages = cur_pages + nr_pages; if (new_pages > page_limit) return -ENOMEM; - } while (atomic_long_cmpxchg(&user->locked_vm, cur_pages, - new_pages) != cur_pages); - + } while (!atomic_long_try_cmpxchg(&user->locked_vm, + &cur_pages, new_pages)); return 0; } |