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From: Keith Busch <[email protected]>
To: <[email protected]>, <[email protected]>, <[email protected]>,
	<[email protected]>, <[email protected]>,
	<[email protected]>
Cc: <[email protected]>, <[email protected]>,
	<[email protected]>, <[email protected]>,
	Keith Busch <[email protected]>
Subject: [PATCHv12 07/12] io_uring: enable per-io write streams
Date: Fri, 6 Dec 2024 14:17:56 -0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

From: Keith Busch <[email protected]>

Allow userspace to pass a per-I/O write stream in the SQE:

      __u8 write_stream;

The __u8 type matches the size the filesystems and block layer support.

Application can query the supported values from the statx
max_write_streams field. Unsupported values are ignored by file
operations that do not support write streams or rejected with an error
by those that support them.

Signed-off-by: Keith Busch <[email protected]>
---
 include/uapi/linux/io_uring.h | 4 ++++
 io_uring/io_uring.c           | 2 ++
 io_uring/rw.c                 | 1 +
 3 files changed, 7 insertions(+)

diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index 38f0d6b10eaf7..986a480e3b9c2 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -92,6 +92,10 @@ struct io_uring_sqe {
 			__u16	addr_len;
 			__u16	__pad3[1];
 		};
+		struct {
+			__u8	write_stream;
+			__u8	__pad4[3];
+		};
 	};
 	union {
 		struct {
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index a8cbe674e5d63..978d0617d7af8 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -3868,6 +3868,8 @@ static int __init io_uring_init(void)
 	BUILD_BUG_SQE_ELEM(44, __s32,  splice_fd_in);
 	BUILD_BUG_SQE_ELEM(44, __u32,  file_index);
 	BUILD_BUG_SQE_ELEM(44, __u16,  addr_len);
+	BUILD_BUG_SQE_ELEM(44, __u8,   write_stream);
+	BUILD_BUG_SQE_ELEM(45, __u8,   __pad4[0]);
 	BUILD_BUG_SQE_ELEM(46, __u16,  __pad3[0]);
 	BUILD_BUG_SQE_ELEM(48, __u64,  addr3);
 	BUILD_BUG_SQE_ELEM_SIZE(48, 0, cmd);
diff --git a/io_uring/rw.c b/io_uring/rw.c
index 04e4467ab0ee8..b8aa2dfcbf48c 100644
--- a/io_uring/rw.c
+++ b/io_uring/rw.c
@@ -322,6 +322,7 @@ static int io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe,
 	}
 	rw->kiocb.dio_complete = NULL;
 	rw->kiocb.ki_flags = 0;
+	rw->kiocb.ki_write_stream = READ_ONCE(sqe->write_stream);
 
 	rw->addr = READ_ONCE(sqe->addr);
 	rw->len = READ_ONCE(sqe->len);
-- 
2.43.5


  parent reply	other threads:[~2024-12-06 22:30 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-06 22:17 [PATCHv12 00/12] block write streams with nvme fdp Keith Busch
2024-12-06 22:17 ` [PATCHv12 01/12] fs: add write stream information to statx Keith Busch
2024-12-09  8:25   ` Hannes Reinecke
     [not found]   ` <CGME20241209115219epcas5p4cfc217e25d977cd87025a4284ba0436c@epcas5p4.samsung.com>
2024-12-09 11:44     ` Nitesh Shetty
2024-12-06 22:17 ` [PATCHv12 02/12] fs: add a write stream field to the kiocb Keith Busch
2024-12-09  8:25   ` Hannes Reinecke
2024-12-09 12:47   ` [PATCHv12 01/12] fs: add write stream information to statx Christian Brauner
     [not found]   ` <CGME20241210073225epcas5p4b2ed325714e6d17fae9e3e45b8e963f6@epcas5p4.samsung.com>
2024-12-10  7:24     ` [PATCHv12 02/12] fs: add a write stream field to the kiocb Nitesh Shetty
2024-12-06 22:17 ` [PATCHv12 03/12] block: add a bi_write_stream field Keith Busch
2024-12-09  8:26   ` Hannes Reinecke
     [not found]   ` <CGME20241210074213epcas5p22330d197c3e7058e9c2226f28fdb1475@epcas5p2.samsung.com>
2024-12-10  7:34     ` Nitesh Shetty
2024-12-06 22:17 ` [PATCHv12 04/12] block: introduce max_write_streams queue limit Keith Busch
2024-12-09  8:27   ` Hannes Reinecke
     [not found]   ` <CGME20241210074628epcas5p3e36c7615cf2a5160d7fe169774fd30db@epcas5p3.samsung.com>
2024-12-10  7:38     ` Nitesh Shetty
2024-12-06 22:17 ` [PATCHv12 05/12] block: introduce a write_stream_granularity " Keith Busch
2024-12-09  8:29   ` Hannes Reinecke
     [not found]   ` <CGME20241210075259epcas5p23bbb79cdb18ddbfad337d764d4fe75da@epcas5p2.samsung.com>
2024-12-10  7:45     ` Nitesh Shetty
2024-12-06 22:17 ` [PATCHv12 06/12] block: expose write streams for block device nodes Keith Busch
2024-12-09  8:30   ` Hannes Reinecke
     [not found]   ` <CGME20241209110649epcas5p41df7db0f7ea58f250da647106d25134b@epcas5p4.samsung.com>
2024-12-09 10:58     ` Nitesh Shetty
2024-12-06 22:17 ` Keith Busch [this message]
2024-12-09  8:31   ` [PATCHv12 07/12] io_uring: enable per-io write streams Hannes Reinecke
2024-12-06 22:17 ` [PATCHv12 08/12] nvme: add a nvme_get_log_lsi helper Keith Busch
2024-12-09  8:31   ` Hannes Reinecke
     [not found]   ` <CGME20241210121958epcas5p27d14abfca66757a2c42ec71895b008b1@epcas5p2.samsung.com>
2024-12-10 12:12     ` Nitesh Shetty
2024-12-06 22:17 ` [PATCHv12 09/12] nvme: pass a void pointer to nvme_get/set_features for the result Keith Busch
2024-12-09  8:32   ` Hannes Reinecke
     [not found]   ` <CGME20241210122137epcas5p2e373baa1c99b78341928cc7bf0fe3bdf@epcas5p2.samsung.com>
2024-12-10 12:13     ` Nitesh Shetty
2024-12-06 22:17 ` [PATCHv12 10/12] nvme.h: add FDP definitions Keith Busch
2024-12-09  8:33   ` Hannes Reinecke
     [not found]   ` <CGME20241210122702epcas5p4fe3ed43ad714c6b467a35d16135d07c5@epcas5p4.samsung.com>
2024-12-10 12:19     ` Nitesh Shetty
2024-12-06 22:18 ` [PATCHv12 11/12] nvme: register fdp parameters with the block layer Keith Busch
2024-12-09  4:05   ` kernel test robot
2024-12-09 12:44     ` Christoph Hellwig
2024-12-09  8:34   ` Hannes Reinecke
2024-12-09 13:18   ` Christoph Hellwig
2024-12-09 16:29     ` Keith Busch
2024-12-10  8:45   ` Dan Carpenter
2024-12-10 15:23     ` Keith Busch
2024-12-06 22:18 ` [PATCHv12 12/12] nvme: use fdp streams if write stream is provided Keith Busch
2024-12-09  8:34   ` Hannes Reinecke
     [not found]   ` <CGME20241210073523epcas5p149482220b87ff3926fb8864ff1660e0c@epcas5p1.samsung.com>
2024-12-10  7:27     ` Nitesh Shetty
2024-12-09 12:55 ` [PATCHv12 00/12] block write streams with nvme fdp Christoph Hellwig
2024-12-09 16:07   ` Keith Busch
2024-12-10  1:49     ` Martin K. Petersen
2024-12-10  7:19     ` Christoph Hellwig

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