From: Joanne Koong <joannelkoong@gmail.com>
To: miklos@szeredi.hu, axboe@kernel.dk
Cc: bschubert@ddn.com, asml.silence@gmail.com,
io-uring@vger.kernel.org, csander@purestorage.com,
xiaobing.li@samsung.com, linux-fsdevel@vger.kernel.org
Subject: [PATCH v3 22/25] io_uring/rsrc: Allow buffer release callback to be optional
Date: Mon, 22 Dec 2025 16:35:19 -0800 [thread overview]
Message-ID: <20251223003522.3055912-23-joannelkoong@gmail.com> (raw)
In-Reply-To: <20251223003522.3055912-1-joannelkoong@gmail.com>
This is a preparatory patch for supporting kernel-populated buffers in
fuse io-uring, which does not need a release callback.
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
---
io_uring/rsrc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index 5fe2695dafb6..5a708cecba4a 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -148,7 +148,8 @@ static void io_buffer_unmap(struct io_ring_ctx *ctx, struct io_mapped_ubuf *imu)
if (imu->acct_pages)
io_unaccount_mem(ctx->user, ctx->mm_account, imu->acct_pages);
- imu->release(imu->priv);
+ if (imu->release)
+ imu->release(imu->priv);
io_free_imu(ctx, imu);
}
--
2.47.3
next prev parent reply other threads:[~2025-12-23 0:37 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-23 0:34 [PATCH v3 00/25] fuse/io-uring: add kernel-managed buffer rings and zero-copy Joanne Koong
2025-12-23 0:34 ` [PATCH v3 01/25] io_uring/kbuf: refactor io_buf_pbuf_register() logic into generic helpers Joanne Koong
2025-12-23 0:34 ` [PATCH v3 02/25] io_uring/kbuf: rename io_unregister_pbuf_ring() to io_unregister_buf_ring() Joanne Koong
2025-12-23 0:35 ` [PATCH v3 03/25] io_uring/kbuf: add support for kernel-managed buffer rings Joanne Koong
2025-12-23 0:35 ` [PATCH v3 04/25] io_uring/kbuf: add mmap " Joanne Koong
2025-12-23 0:35 ` [PATCH v3 05/25] io_uring/kbuf: support kernel-managed buffer rings in buffer selection Joanne Koong
2025-12-23 0:35 ` [PATCH v3 06/25] io_uring/kbuf: add buffer ring pinning/unpinning Joanne Koong
2025-12-23 0:35 ` [PATCH v3 07/25] io_uring/kbuf: add recycling for kernel managed buffer rings Joanne Koong
2025-12-23 0:35 ` [PATCH v3 08/25] io_uring: add io_uring_cmd_fixed_index_get() and io_uring_cmd_fixed_index_put() Joanne Koong
2025-12-23 0:35 ` [PATCH v3 09/25] io_uring/kbuf: add io_uring_cmd_is_kmbuf_ring() Joanne Koong
2025-12-23 0:35 ` [PATCH v3 10/25] io_uring/kbuf: export io_ring_buffer_select() Joanne Koong
2025-12-23 0:35 ` [PATCH v3 11/25] io_uring/kbuf: return buffer id in buffer selection Joanne Koong
2025-12-23 0:35 ` [PATCH v3 12/25] io_uring/cmd: set selected buffer index in __io_uring_cmd_done() Joanne Koong
2025-12-23 0:35 ` [PATCH v3 13/25] fuse: refactor io-uring logic for getting next fuse request Joanne Koong
2025-12-23 0:35 ` [PATCH v3 14/25] fuse: refactor io-uring header copying to ring Joanne Koong
2025-12-23 0:35 ` [PATCH v3 15/25] fuse: refactor io-uring header copying from ring Joanne Koong
2025-12-23 0:35 ` [PATCH v3 16/25] fuse: use enum types for header copying Joanne Koong
2025-12-23 0:35 ` [PATCH v3 17/25] fuse: refactor setting up copy state for payload copying Joanne Koong
2025-12-23 0:35 ` [PATCH v3 18/25] fuse: support buffer copying for kernel addresses Joanne Koong
2025-12-23 0:35 ` [PATCH v3 19/25] fuse: add io-uring kernel-managed buffer ring Joanne Koong
2025-12-23 0:35 ` [PATCH v3 20/25] io_uring/rsrc: rename io_buffer_register_bvec()/io_buffer_unregister_bvec() Joanne Koong
2025-12-23 0:35 ` [PATCH v3 21/25] io_uring/rsrc: split io_buffer_register_request() logic Joanne Koong
2025-12-23 0:35 ` Joanne Koong [this message]
2025-12-23 0:35 ` [PATCH v3 23/25] io_uring/rsrc: add io_buffer_register_bvec() Joanne Koong
2025-12-23 0:35 ` [PATCH v3 24/25] fuse: add zero-copy over io-uring Joanne Koong
2025-12-23 0:35 ` [PATCH v3 25/25] docs: fuse: add io-uring bufring and zero-copy documentation Joanne Koong
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