From: Jens Axboe <axboe@kernel.dk>
To: linux-fsdevel@vger.kernel.org, linux-aio@kvack.org,
linux-block@vger.kernel.org, linux-arch@vger.kernel.org
Cc: hch@lst.de, jmoyer@redhat.com, avi@scylladb.com,
Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 06/16] io_uring: add fsync support
Date: Mon, 14 Jan 2019 19:55:21 -0700 [thread overview]
Message-ID: <20190115025531.13985-7-axboe@kernel.dk> (raw)
In-Reply-To: <20190115025531.13985-1-axboe@kernel.dk>
From: Christoph Hellwig <hch@lst.de>
Add a new fsync opcode, which either syncs a range if one is passed,
or the whole file if the offset and length fields are both cleared
to zero. A flag is provided to use fdatasync semantics, that is only
force out metadata which is required to retrieve the file data, but
not others like metadata.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 33 +++++++++++++++++++++++++++++++++
include/uapi/linux/io_uring.h | 8 +++++++-
2 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 148eb3af7dc4..7d74463217a6 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -449,6 +449,36 @@ static int io_nop(struct io_kiocb *req, const struct io_uring_sqe *sqe)
return 0;
}
+static int io_fsync(struct io_kiocb *req, const struct io_uring_sqe *sqe,
+ bool force_nonblock)
+{
+ struct io_ring_ctx *ctx = req->ctx;
+ loff_t end = sqe->off + sqe->len;
+ struct file *file;
+ int ret;
+
+ /* fsync always requires a blocking context */
+ if (force_nonblock)
+ return -EAGAIN;
+
+ if (unlikely(sqe->addr))
+ return -EINVAL;
+ if (unlikely(sqe->fsync_flags & ~IORING_FSYNC_DATASYNC))
+ return -EINVAL;
+
+ file = fget(sqe->fd);
+ if (unlikely(!file))
+ return -EBADF;
+
+ ret = vfs_fsync_range(file, sqe->off, end > 0 ? end : LLONG_MAX,
+ sqe->fsync_flags & IORING_FSYNC_DATASYNC);
+
+ fput(file);
+ io_cqring_fill_event(ctx, sqe->user_data, ret, 0);
+ io_free_req(req);
+ return 0;
+}
+
static int __io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
struct sqe_submit *s, bool force_nonblock)
{
@@ -474,6 +504,9 @@ static int __io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
case IORING_OP_WRITEV:
ret = io_write(req, sqe, force_nonblock);
break;
+ case IORING_OP_FSYNC:
+ ret = io_fsync(req, sqe, force_nonblock);
+ break;
default:
ret = -EINVAL;
break;
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index a1ebaa09e1b8..ac49bd179ed9 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -27,7 +27,7 @@ struct io_uring_sqe {
__u32 len; /* buffer size or number of iovecs */
union {
__kernel_rwf_t rw_flags;
- __u32 __resv;
+ __u32 fsync_flags;
};
__u64 user_data; /* data to be passed back at completion time */
__u64 __pad2[3];
@@ -36,6 +36,12 @@ struct io_uring_sqe {
#define IORING_OP_NOP 0
#define IORING_OP_READV 1
#define IORING_OP_WRITEV 2
+#define IORING_OP_FSYNC 3
+
+/*
+ * sqe->fsync_flags
+ */
+#define IORING_FSYNC_DATASYNC (1 << 0)
/*
* IO completion data structure (Completion Queue Entry)
--
2.17.1
--
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WARNING: multiple messages have this Message-ID (diff)
From: Jens Axboe <axboe@kernel.dk>
To: linux-fsdevel@vger.kernel.org, linux-aio@kvack.org,
linux-block@vger.kernel.org, linux-arch@vger.kernel.org
Cc: hch@lst.de, jmoyer@redhat.com, avi@scylladb.com,
Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 06/16] io_uring: add fsync support
Date: Mon, 14 Jan 2019 19:55:21 -0700 [thread overview]
Message-ID: <20190115025531.13985-7-axboe@kernel.dk> (raw)
Message-ID: <20190115025521.YZXlf1-VADfZSDfYdTzq69gTIPEaub0smGAVo0fTYVs@z> (raw)
In-Reply-To: <20190115025531.13985-1-axboe@kernel.dk>
From: Christoph Hellwig <hch@lst.de>
Add a new fsync opcode, which either syncs a range if one is passed,
or the whole file if the offset and length fields are both cleared
to zero. A flag is provided to use fdatasync semantics, that is only
force out metadata which is required to retrieve the file data, but
not others like metadata.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 33 +++++++++++++++++++++++++++++++++
include/uapi/linux/io_uring.h | 8 +++++++-
2 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 148eb3af7dc4..7d74463217a6 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -449,6 +449,36 @@ static int io_nop(struct io_kiocb *req, const struct io_uring_sqe *sqe)
return 0;
}
+static int io_fsync(struct io_kiocb *req, const struct io_uring_sqe *sqe,
+ bool force_nonblock)
+{
+ struct io_ring_ctx *ctx = req->ctx;
+ loff_t end = sqe->off + sqe->len;
+ struct file *file;
+ int ret;
+
+ /* fsync always requires a blocking context */
+ if (force_nonblock)
+ return -EAGAIN;
+
+ if (unlikely(sqe->addr))
+ return -EINVAL;
+ if (unlikely(sqe->fsync_flags & ~IORING_FSYNC_DATASYNC))
+ return -EINVAL;
+
+ file = fget(sqe->fd);
+ if (unlikely(!file))
+ return -EBADF;
+
+ ret = vfs_fsync_range(file, sqe->off, end > 0 ? end : LLONG_MAX,
+ sqe->fsync_flags & IORING_FSYNC_DATASYNC);
+
+ fput(file);
+ io_cqring_fill_event(ctx, sqe->user_data, ret, 0);
+ io_free_req(req);
+ return 0;
+}
+
static int __io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
struct sqe_submit *s, bool force_nonblock)
{
@@ -474,6 +504,9 @@ static int __io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
case IORING_OP_WRITEV:
ret = io_write(req, sqe, force_nonblock);
break;
+ case IORING_OP_FSYNC:
+ ret = io_fsync(req, sqe, force_nonblock);
+ break;
default:
ret = -EINVAL;
break;
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index a1ebaa09e1b8..ac49bd179ed9 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -27,7 +27,7 @@ struct io_uring_sqe {
__u32 len; /* buffer size or number of iovecs */
union {
__kernel_rwf_t rw_flags;
- __u32 __resv;
+ __u32 fsync_flags;
};
__u64 user_data; /* data to be passed back at completion time */
__u64 __pad2[3];
@@ -36,6 +36,12 @@ struct io_uring_sqe {
#define IORING_OP_NOP 0
#define IORING_OP_READV 1
#define IORING_OP_WRITEV 2
+#define IORING_OP_FSYNC 3
+
+/*
+ * sqe->fsync_flags
+ */
+#define IORING_FSYNC_DATASYNC (1 << 0)
/*
* IO completion data structure (Completion Queue Entry)
--
2.17.1
next prev parent reply other threads:[~2019-01-15 2:55 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-15 2:55 (unknown), Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 01/16] fs: add an iopoll method to struct file_operations Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 02/16] block: wire up block device iopoll method Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 03/16] block: add bio_set_polled() helper Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 04/16] iomap: wire up the iopoll method Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 05/16] Add io_uring IO interface Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 16:51 ` Jonathan Corbet
2019-01-15 16:51 ` Jonathan Corbet
2019-01-15 16:55 ` Jens Axboe
2019-01-15 16:55 ` Jens Axboe
2019-01-15 17:26 ` Jens Axboe
2019-01-15 17:26 ` Jens Axboe
2019-01-16 10:41 ` Arnd Bergmann
2019-01-16 10:41 ` Arnd Bergmann
2019-01-16 11:00 ` Arnd Bergmann
2019-01-16 11:00 ` Arnd Bergmann
2019-01-16 15:12 ` Jens Axboe
2019-01-16 15:12 ` Jens Axboe
2019-01-16 15:16 ` Arnd Bergmann
2019-01-16 15:16 ` Arnd Bergmann
2019-01-16 15:25 ` Jens Axboe
2019-01-16 15:25 ` Jens Axboe
2019-01-15 2:55 ` Jens Axboe [this message]
2019-01-15 2:55 ` [PATCH 06/16] io_uring: add fsync support Jens Axboe
2019-01-15 2:55 ` [PATCH 07/16] io_uring: support for IO polling Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 08/16] io_uring: add submission side request cache Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 09/16] fs: add fget_many() and fput_many() Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 10/16] io_uring: use fget/fput_many() for file references Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 11/16] io_uring: batch io_kiocb allocation Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 12/16] block: implement bio helper to add iter bvec pages to bio Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 13/16] io_uring: add support for pre-mapped user IO buffers Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-16 10:53 ` Arnd Bergmann
2019-01-16 15:14 ` Jens Axboe
2019-01-16 15:14 ` Jens Axboe
2019-01-16 15:32 ` Jens Axboe
2019-01-16 15:32 ` Jens Axboe
2019-01-16 15:41 ` Arnd Bergmann
2019-01-16 15:47 ` Jens Axboe
2019-01-16 15:47 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 14/16] io_uring: add submission polling Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 15/16] io_uring: add file registration Jens Axboe
2019-01-15 2:55 ` Jens Axboe
2019-01-16 10:45 ` Arnd Bergmann
2019-01-16 10:45 ` Arnd Bergmann
2019-01-16 15:15 ` Jens Axboe
2019-01-16 15:15 ` Jens Axboe
2019-01-15 2:55 ` [PATCH 16/16] io_uring: add io_uring_event cache hit information Jens Axboe
2019-01-15 2:55 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2019-01-12 21:29 [PATCHSET v3] io_uring IO interface Jens Axboe
2019-01-12 21:30 ` [PATCH 06/16] io_uring: add fsync support Jens Axboe
2019-01-12 21:30 ` Jens Axboe
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