[PATCH 19/26] aio: split iocb init from allocation

[Jens Axboe]

In preparation from having pre-allocated requests, that we then just
need to initialize before use.

Signed-off-by: Jens Axboe <ax...@kernel.dk>
---
 fs/aio.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/fs/aio.c b/fs/aio.c
index 634b540b0c92..416bb2e365e0 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1099,6 +1099,16 @@ static bool get_reqs_available(struct kioctx *ctx)
        return __get_reqs_available(ctx);
 }
 
+static void aio_iocb_init(struct kioctx *ctx, struct aio_kiocb *req)
+{
+       percpu_ref_get(&ctx->reqs);
+       req->ki_ctx = ctx;
+       INIT_LIST_HEAD(&req->ki_list);
+       req->ki_flags = 0;
+       refcount_set(&req->ki_refcnt, 0);
+       req->ki_eventfd = NULL;
+}
+
 /* aio_get_req
  *     Allocate a slot for an aio request.
  * Returns NULL if no requests are free.
@@ -1111,12 +1121,7 @@ static inline struct aio_kiocb *aio_get_req(struct 
kioctx *ctx)
        if (unlikely(!req))
                return NULL;
 
-       percpu_ref_get(&ctx->reqs);
-       req->ki_ctx = ctx;
-       INIT_LIST_HEAD(&req->ki_list);
-       req->ki_flags = 0;
-       refcount_set(&req->ki_refcnt, 0);
-       req->ki_eventfd = NULL;
+       aio_iocb_init(ctx, req);
        return req;
 }
 
-- 
2.17.1