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-rw-r--r--io_uring/rsrc.c7
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;
}