From: Jens Axboe <axboe@kernel.dk>
To: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-aio@kvack.org
Cc: hch@lst.de, jmoyer@redhat.com, clm@fb.com, Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 19/27] aio: split iocb init from allocation
Date: Mon, 10 Dec 2018 17:15:41 -0700 [thread overview]
Message-ID: <20181211001549.30085-20-axboe@kernel.dk> (raw)
In-Reply-To: <20181211001549.30085-1-axboe@kernel.dk>
In preparation from having pre-allocated requests, that we then just
need to initialize before use.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/aio.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/fs/aio.c b/fs/aio.c
index 6cbfe9905637..e9dbaedda7ae 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
next prev parent reply other threads:[~2018-12-11 0:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 0:15 [PATCHSET v7] Support for polled and buffed aio (and more) Jens Axboe
2018-12-11 0:15 ` [PATCH 01/27] fs: add an iopoll method to struct file_operations Jens Axboe
2018-12-11 0:15 ` [PATCH 02/27] block: add REQ_HIPRI_ASYNC Jens Axboe
2018-12-11 0:15 ` [PATCH 03/27] block: wire up block device iopoll method Jens Axboe
2018-12-11 0:15 ` [PATCH 04/27] block: use REQ_HIPRI_ASYNC for non-sync polled IO Jens Axboe
2018-12-11 0:15 ` [PATCH 05/27] iomap: wire up the iopoll method Jens Axboe
2018-12-11 0:15 ` [PATCH 06/27] aio: use assigned completion handler Jens Axboe
2018-12-11 0:15 ` [PATCH 07/27] aio: separate out ring reservation from req allocation Jens Axboe
2018-12-11 0:15 ` [PATCH 08/27] aio: don't zero entire aio_kiocb aio_get_req() Jens Axboe
2018-12-11 0:15 ` [PATCH 09/27] aio: only use blk plugs for > 2 depth submissions Jens Axboe
2018-12-11 0:15 ` [PATCH 10/27] aio: use iocb_put() instead of open coding it Jens Axboe
2018-12-11 0:15 ` [PATCH 11/27] aio: split out iocb copy from io_submit_one() Jens Axboe
2018-12-11 0:15 ` [PATCH 12/27] aio: abstract out io_event filler helper Jens Axboe
2018-12-11 0:15 ` [PATCH 13/27] aio: add io_setup2() system call Jens Axboe
2018-12-11 0:15 ` [PATCH 14/27] aio: add support for having user mapped iocbs Jens Axboe
2018-12-11 0:15 ` [PATCH 15/27] aio: support for IO polling Jens Axboe
2018-12-11 0:15 ` [PATCH 16/27] aio: add submission side request cache Jens Axboe
2018-12-11 0:15 ` [PATCH 17/27] fs: add fget_many() and fput_many() Jens Axboe
2018-12-11 0:15 ` [PATCH 18/27] aio: use fget/fput_many() for file references Jens Axboe
2018-12-11 0:15 ` Jens Axboe [this message]
2018-12-11 0:15 ` [PATCH 20/27] aio: batch aio_kiocb allocation Jens Axboe
2018-12-11 0:15 ` [PATCH 21/27] block: add BIO_HOLD_PAGES flag Jens Axboe
2018-12-11 0:15 ` [PATCH 22/27] block: implement bio helper to add iter bvec pages to bio Jens Axboe
2018-12-11 0:15 ` [PATCH 23/27] fs: add support for mapping an ITER_BVEC for O_DIRECT Jens Axboe
2018-12-11 0:15 ` [PATCH 24/27] aio: add support for pre-mapped user IO buffers Jens Axboe
2018-12-11 0:15 ` [PATCH 25/27] aio: split old ring complete out from aio_complete() Jens Axboe
2018-12-11 0:15 ` [PATCH 26/27] aio: add support for submission/completion rings Jens Axboe
2018-12-11 0:15 ` [PATCH 27/27] aio: support kernel side submission for aio with SCQRING Jens Axboe
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