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-rw-r--r--fs/aio.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/aio.c b/fs/aio.c
index 674bb47fed2..7afa222f680 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1514,10 +1514,14 @@ int fastcall io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
goto out_put_req;
spin_lock_irq(&ctx->ctx_lock);
- list_add_tail(&req->ki_run_list, &ctx->run_list);
- /* drain the run list */
- while (__aio_run_iocbs(ctx))
- ;
+ if (likely(list_empty(&ctx->run_list))) {
+ aio_run_iocb(req);
+ } else {
+ list_add_tail(&req->ki_run_list, &ctx->run_list);
+ /* drain the run list */
+ while (__aio_run_iocbs(ctx))
+ ;
+ }
spin_unlock_irq(&ctx->ctx_lock);
aio_put_req(req); /* drop extra ref to req */
return 0;