diff options
Diffstat (limited to 'fs/userfaultfd.c')
| -rw-r--r-- | fs/userfaultfd.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index 7e8f0d60718d..a209588043d3 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -522,25 +522,30 @@ wakeup: } /* fault_pending_wqh.lock must be hold by the caller */ -static inline struct userfaultfd_wait_queue *find_userfault( - struct userfaultfd_ctx *ctx) +static inline struct userfaultfd_wait_queue *find_userfault_in( + wait_queue_head_t *wqh) { wait_queue_t *wq; struct userfaultfd_wait_queue *uwq; - VM_BUG_ON(!spin_is_locked(&ctx->fault_pending_wqh.lock)); + VM_BUG_ON(!spin_is_locked(&wqh->lock)); uwq = NULL; - if (!waitqueue_active(&ctx->fault_pending_wqh)) + if (!waitqueue_active(wqh)) goto out; /* walk in reverse to provide FIFO behavior to read userfaults */ - wq = list_last_entry(&ctx->fault_pending_wqh.task_list, - typeof(*wq), task_list); + wq = list_last_entry(&wqh->task_list, typeof(*wq), task_list); uwq = container_of(wq, struct userfaultfd_wait_queue, wq); out: return uwq; } +static inline struct userfaultfd_wait_queue *find_userfault( + struct userfaultfd_ctx *ctx) +{ + return find_userfault_in(&ctx->fault_pending_wqh); +} + static unsigned int userfaultfd_poll(struct file *file, poll_table *wait) { struct userfaultfd_ctx *ctx = file->private_data; |