[fio.git] / engines / sync.c

/*
 * sync/psync engine
 *
 * IO engine that does regular read(2)/write(2) with lseek(2) to transfer
 * data and IO engine that does regular pread(2)/pwrite(2) to transfer data.
 *
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/uio.h>
#include <errno.h>
#include <assert.h>

#include "../fio.h"

/*
 * Sync engine uses engine_data to store last offset
 */
#define LAST_POS(f)	((f)->engine_data)

struct syncio_data {
	struct iovec *iovecs;
	struct io_u **io_us;
	unsigned int queued;
	unsigned int events;
	unsigned long queued_bytes;

	unsigned long long last_offset;
	struct fio_file *last_file;
	enum fio_ddir last_ddir;
};

static int fio_syncio_prep(struct thread_data *td, struct io_u *io_u)
{
	struct fio_file *f = io_u->file;

	if (!ddir_rw(io_u->ddir))
		return 0;

	if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset)
		return 0;

	if (lseek(f->fd, io_u->offset, SEEK_SET) == -1) {
		td_verror(td, errno, "lseek");
		return 1;
	}

	return 0;
}

static int fio_io_end(struct thread_data *td, struct io_u *io_u, int ret)
{
	if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir))
		LAST_POS(io_u->file) = io_u->offset + ret;

	if (ret != (int) io_u->xfer_buflen) {
		if (ret >= 0) {
			io_u->resid = io_u->xfer_buflen - ret;
			io_u->error = 0;
			return FIO_Q_COMPLETED;
		} else
			io_u->error = errno;
	}

	if (io_u->error) {
		io_u_log_error(td, io_u);
		td_verror(td, io_u->error, "xfer");
	}

	return FIO_Q_COMPLETED;
}

#ifdef CONFIG_PWRITEV
static int fio_pvsyncio_queue(struct thread_data *td, struct io_u *io_u)
{
	struct syncio_data *sd = td->io_ops->data;
	struct iovec *iov = &sd->iovecs[0];
	struct fio_file *f = io_u->file;
	int ret;

	fio_ro_check(td, io_u);

	iov->iov_base = io_u->xfer_buf;
	iov->iov_len = io_u->xfer_buflen;

	if (io_u->ddir == DDIR_READ)
		ret = preadv(f->fd, iov, 1, io_u->offset);
	else if (io_u->ddir == DDIR_WRITE)
		ret = pwritev(f->fd, iov, 1, io_u->offset);
	else if (io_u->ddir == DDIR_TRIM) {
		do_io_u_trim(td, io_u);
		return FIO_Q_COMPLETED;
	} else
		ret = do_io_u_sync(td, io_u);

	return fio_io_end(td, io_u, ret);
}
#endif

static int fio_psyncio_queue(struct thread_data *td, struct io_u *io_u)
{
	struct fio_file *f = io_u->file;
	int ret;

	fio_ro_check(td, io_u);

	if (io_u->ddir == DDIR_READ)
		ret = pread(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset);
	else if (io_u->ddir == DDIR_WRITE)
		ret = pwrite(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset);
	else if (io_u->ddir == DDIR_TRIM) {
		do_io_u_trim(td, io_u);
		return FIO_Q_COMPLETED;
	} else
		ret = do_io_u_sync(td, io_u);

	return fio_io_end(td, io_u, ret);
}

static int fio_syncio_queue(struct thread_data *td, struct io_u *io_u)
{
	struct fio_file *f = io_u->file;
	int ret;

	fio_ro_check(td, io_u);

	if (io_u->ddir == DDIR_READ)
		ret = read(f->fd, io_u->xfer_buf, io_u->xfer_buflen);
	else if (io_u->ddir == DDIR_WRITE)
		ret = write(f->fd, io_u->xfer_buf, io_u->xfer_buflen);
	else if (io_u->ddir == DDIR_TRIM) {
		do_io_u_trim(td, io_u);
		return FIO_Q_COMPLETED;
	} else
		ret = do_io_u_sync(td, io_u);

	return fio_io_end(td, io_u, ret);
}

static int fio_vsyncio_getevents(struct thread_data *td, unsigned int min,
				 unsigned int max,
				 const struct timespec fio_unused *t)
{
	struct syncio_data *sd = td->io_ops->data;
	int ret;

	if (min) {
		ret = sd->events;
		sd->events = 0;
	} else
		ret = 0;

	dprint(FD_IO, "vsyncio_getevents: min=%d,max=%d: %d\n", min, max, ret);
	return ret;
}

static struct io_u *fio_vsyncio_event(struct thread_data *td, int event)
{
	struct syncio_data *sd = td->io_ops->data;

	return sd->io_us[event];
}

static int fio_vsyncio_append(struct thread_data *td, struct io_u *io_u)
{
	struct syncio_data *sd = td->io_ops->data;

	if (ddir_sync(io_u->ddir))
		return 0;

	if (io_u->offset == sd->last_offset && io_u->file == sd->last_file &&
	    io_u->ddir == sd->last_ddir)
		return 1;

	return 0;
}

static void fio_vsyncio_set_iov(struct syncio_data *sd, struct io_u *io_u,
				int idx)
{
	sd->io_us[idx] = io_u;
	sd->iovecs[idx].iov_base = io_u->xfer_buf;
	sd->iovecs[idx].iov_len = io_u->xfer_buflen;
	sd->last_offset = io_u->offset + io_u->xfer_buflen;
	sd->last_file = io_u->file;
	sd->last_ddir = io_u->ddir;
	sd->queued_bytes += io_u->xfer_buflen;
	sd->queued++;
}

static int fio_vsyncio_queue(struct thread_data *td, struct io_u *io_u)
{
	struct syncio_data *sd = td->io_ops->data;

	fio_ro_check(td, io_u);

	if (!fio_vsyncio_append(td, io_u)) {
		dprint(FD_IO, "vsyncio_queue: no append (%d)\n", sd->queued);
		/*
		 * If we can't append and have stuff queued, tell fio to
		 * commit those first and then retry this io
		 */
		if (sd->queued)
			return FIO_Q_BUSY;
		if (ddir_sync(io_u->ddir)) {
			int ret = do_io_u_sync(td, io_u);

			return fio_io_end(td, io_u, ret);
		}

		sd->queued = 0;
		sd->queued_bytes = 0;
		fio_vsyncio_set_iov(sd, io_u, 0);
	} else {
		if (sd->queued == td->o.iodepth) {
			dprint(FD_IO, "vsyncio_queue: max depth %d\n", sd->queued);
			return FIO_Q_BUSY;
		}

		dprint(FD_IO, "vsyncio_queue: append\n");
		fio_vsyncio_set_iov(sd, io_u, sd->queued);
	}

	dprint(FD_IO, "vsyncio_queue: depth now %d\n", sd->queued);
	return FIO_Q_QUEUED;
}

/*
 * Check that we transferred all bytes, or saw an error, etc
 */
static int fio_vsyncio_end(struct thread_data *td, ssize_t bytes)
{
	struct syncio_data *sd = td->io_ops->data;
	struct io_u *io_u;
	unsigned int i;
	int err;

	/*
	 * transferred everything, perfect
	 */
	if (bytes == sd->queued_bytes)
		return 0;

	err = errno;
	for (i = 0; i < sd->queued; i++) {
		io_u = sd->io_us[i];

		if (bytes == -1) {
			io_u->error = err;
		} else {
			unsigned int this_io;

			this_io = bytes;
			if (this_io > io_u->xfer_buflen)
				this_io = io_u->xfer_buflen;

			io_u->resid = io_u->xfer_buflen - this_io;
			io_u->error = 0;
			bytes -= this_io;
		}
	}

	if (bytes == -1) {
		td_verror(td, err, "xfer vsync");
		return -err;
	}

	return 0;
}

static int fio_vsyncio_commit(struct thread_data *td)
{
	struct syncio_data *sd = td->io_ops->data;
	struct fio_file *f;
	ssize_t ret;

	if (!sd->queued)
		return 0;

	io_u_mark_submit(td, sd->queued);
	f = sd->last_file;

	if (lseek(f->fd, sd->io_us[0]->offset, SEEK_SET) == -1) {
		int err = -errno;

		td_verror(td, errno, "lseek");
		return err;
	}

	if (sd->last_ddir == DDIR_READ)
		ret = readv(f->fd, sd->iovecs, sd->queued);
	else
		ret = writev(f->fd, sd->iovecs, sd->queued);

	dprint(FD_IO, "vsyncio_commit: %d\n", (int) ret);
	sd->events = sd->queued;
	sd->queued = 0;
	return fio_vsyncio_end(td, ret);
}

static int fio_vsyncio_init(struct thread_data *td)
{
	struct syncio_data *sd;

	sd = malloc(sizeof(*sd));
	memset(sd, 0, sizeof(*sd));
	sd->last_offset = -1ULL;
	sd->iovecs = malloc(td->o.iodepth * sizeof(struct iovec));
	sd->io_us = malloc(td->o.iodepth * sizeof(struct io_u *));

	td->io_ops->data = sd;
	return 0;
}

static void fio_vsyncio_cleanup(struct thread_data *td)
{
	struct syncio_data *sd = td->io_ops->data;

	free(sd->iovecs);
	free(sd->io_us);
	free(sd);
}

static struct ioengine_ops ioengine_rw = {
	.name		= "sync",
	.version	= FIO_IOOPS_VERSION,
	.prep		= fio_syncio_prep,
	.queue		= fio_syncio_queue,
	.open_file	= generic_open_file,
	.close_file	= generic_close_file,
	.get_file_size	= generic_get_file_size,
	.flags		= FIO_SYNCIO,
};

static struct ioengine_ops ioengine_prw = {
	.name		= "psync",
	.version	= FIO_IOOPS_VERSION,
	.queue		= fio_psyncio_queue,
	.open_file	= generic_open_file,
	.close_file	= generic_close_file,
	.get_file_size	= generic_get_file_size,
	.flags		= FIO_SYNCIO,
};

static struct ioengine_ops ioengine_vrw = {
	.name		= "vsync",
	.version	= FIO_IOOPS_VERSION,
	.init		= fio_vsyncio_init,
	.cleanup	= fio_vsyncio_cleanup,
	.queue		= fio_vsyncio_queue,
	.commit		= fio_vsyncio_commit,
	.event		= fio_vsyncio_event,
	.getevents	= fio_vsyncio_getevents,
	.open_file	= generic_open_file,
	.close_file	= generic_close_file,
	.get_file_size	= generic_get_file_size,
	.flags		= FIO_SYNCIO,
};

#ifdef CONFIG_PWRITEV
static struct ioengine_ops ioengine_pvrw = {
	.name		= "pvsync",
	.version	= FIO_IOOPS_VERSION,
	.init		= fio_vsyncio_init,
	.cleanup	= fio_vsyncio_cleanup,
	.queue		= fio_pvsyncio_queue,
	.open_file	= generic_open_file,
	.close_file	= generic_close_file,
	.get_file_size	= generic_get_file_size,
	.flags		= FIO_SYNCIO,
};
#endif

static void fio_init fio_syncio_register(void)
{
	register_ioengine(&ioengine_rw);
	register_ioengine(&ioengine_prw);
	register_ioengine(&ioengine_vrw);
#ifdef CONFIG_PWRITEV
	register_ioengine(&ioengine_pvrw);
#endif
}

static void fio_exit fio_syncio_unregister(void)
{
	unregister_ioengine(&ioengine_rw);
	unregister_ioengine(&ioengine_prw);
	unregister_ioengine(&ioengine_vrw);
#ifdef CONFIG_PWRITEV
	unregister_ioengine(&ioengine_pvrw);
#endif
}
Commit	Line	Data
2866c82d	1	/*
a31041ea	2	* sync/psync engine
da751ca9 JA	3	*
da751ca9 JA	4	* IO engine that does regular read(2)/write(2) with lseek(2) to transfer
a31041ea	5	* data and IO engine that does regular pread(2)/pwrite(2) to transfer data.
2866c82d JA	6	*
	7	*/
	8	#include <stdio.h>
	9	#include <stdlib.h>
	10	#include <unistd.h>
5921e80c	11	#include <sys/uio.h>
2866c82d JA	12	#include <errno.h>
2866c82d JA	13	#include <assert.h>
5f350952 JA	14
5f350952 JA	15	#include "../fio.h"
2866c82d	16
ef5f5a3a JA	17	/*
	18	* Sync engine uses engine_data to store last offset
	19	*/
	20	#define LAST_POS(f) ((f)->engine_data)
	21
1d2af02a JA	22	struct syncio_data {
	23	struct iovec *iovecs;
	24	struct io_u **io_us;
	25	unsigned int queued;
e51cf72c	26	unsigned int events;
1d2af02a JA	27	unsigned long queued_bytes;
	28
	29	unsigned long long last_offset;
	30	struct fio_file *last_file;
	31	enum fio_ddir last_ddir;
	32	};
	33
2866c82d JA	34	static int fio_syncio_prep(struct thread_data td, struct io_u io_u)
2866c82d JA	35	{
53cdc686 JA	36	struct fio_file *f = io_u->file;
53cdc686 JA	37
ff58fced	38	if (!ddir_rw(io_u->ddir))
87dc1ab1 JA	39	return 0;
87dc1ab1 JA	40
ef5f5a3a	41	if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset)
e943b878 JA	42	return 0;
e943b878 JA	43
53cdc686	44	if (lseek(f->fd, io_u->offset, SEEK_SET) == -1) {
e1161c32	45	td_verror(td, errno, "lseek");
2866c82d JA	46	return 1;
	47	}
	48
	49	return 0;
	50	}
	51
2bd3eabc	52	static int fio_io_end(struct thread_data td, struct io_u io_u, int ret)
2866c82d	53	{
ff58fced	54	if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir))
ef5f5a3a	55	LAST_POS(io_u->file) = io_u->offset + ret;
e943b878	56
cec6b55d	57	if (ret != (int) io_u->xfer_buflen) {
22819ec2	58	if (ret >= 0) {
cec6b55d JA	59	io_u->resid = io_u->xfer_buflen - ret;
cec6b55d JA	60	io_u->error = 0;
36167d82	61	return FIO_Q_COMPLETED;
2866c82d JA	62	} else
	63	io_u->error = errno;
	64	}
	65
bfd197cb JA	66	if (io_u->error) {
bfd197cb JA	67	io_u_log_error(td, io_u);
e1161c32	68	td_verror(td, io_u->error, "xfer");
bfd197cb	69	}
2866c82d	70
36167d82	71	return FIO_Q_COMPLETED;
2866c82d JA	72	}
2866c82d JA	73
07fc0acd JA	74	#ifdef CONFIG_PWRITEV
	75	static int fio_pvsyncio_queue(struct thread_data td, struct io_u io_u)
	76	{
	77	struct syncio_data *sd = td->io_ops->data;
	78	struct iovec *iov = &sd->iovecs[0];
	79	struct fio_file *f = io_u->file;
	80	int ret;
	81
	82	fio_ro_check(td, io_u);
	83
	84	iov->iov_base = io_u->xfer_buf;
	85	iov->iov_len = io_u->xfer_buflen;
	86
	87	if (io_u->ddir == DDIR_READ)
	88	ret = preadv(f->fd, iov, 1, io_u->offset);
	89	else if (io_u->ddir == DDIR_WRITE)
	90	ret = pwritev(f->fd, iov, 1, io_u->offset);
	91	else if (io_u->ddir == DDIR_TRIM) {
	92	do_io_u_trim(td, io_u);
	93	return FIO_Q_COMPLETED;
	94	} else
	95	ret = do_io_u_sync(td, io_u);
	96
	97	return fio_io_end(td, io_u, ret);
	98	}
	99	#endif
	100
2bd3eabc	101	static int fio_psyncio_queue(struct thread_data td, struct io_u io_u)
a31041ea	102	{
2bd3eabc JA	103	struct fio_file *f = io_u->file;
	104	int ret;
	105
	106	fio_ro_check(td, io_u);
	107
	108	if (io_u->ddir == DDIR_READ)
	109	ret = pread(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset);
	110	else if (io_u->ddir == DDIR_WRITE)
	111	ret = pwrite(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset);
6eaf09d6 SL	112	else if (io_u->ddir == DDIR_TRIM) {
	113	do_io_u_trim(td, io_u);
	114	return FIO_Q_COMPLETED;
	115	} else
0a28ecda	116	ret = do_io_u_sync(td, io_u);
2bd3eabc JA	117
	118	return fio_io_end(td, io_u, ret);
	119	}
	120
	121	static int fio_syncio_queue(struct thread_data td, struct io_u io_u)
	122	{
	123	struct fio_file *f = io_u->file;
	124	int ret;
	125
	126	fio_ro_check(td, io_u);
	127
	128	if (io_u->ddir == DDIR_READ)
	129	ret = read(f->fd, io_u->xfer_buf, io_u->xfer_buflen);
	130	else if (io_u->ddir == DDIR_WRITE)
	131	ret = write(f->fd, io_u->xfer_buf, io_u->xfer_buflen);
6eaf09d6 SL	132	else if (io_u->ddir == DDIR_TRIM) {
	133	do_io_u_trim(td, io_u);
	134	return FIO_Q_COMPLETED;
	135	} else
0a28ecda	136	ret = do_io_u_sync(td, io_u);
2bd3eabc JA	137
2bd3eabc JA	138	return fio_io_end(td, io_u, ret);
a31041ea	139	}
a31041ea	140
1d2af02a JA	141	static int fio_vsyncio_getevents(struct thread_data *td, unsigned int min,
1d2af02a JA	142	unsigned int max,
1f440ece	143	const struct timespec fio_unused *t)
1d2af02a JA	144	{
	145	struct syncio_data *sd = td->io_ops->data;
	146	int ret;
	147
	148	if (min) {
e51cf72c JA	149	ret = sd->events;
e51cf72c JA	150	sd->events = 0;
1d2af02a JA	151	} else
	152	ret = 0;
	153
	154	dprint(FD_IO, "vsyncio_getevents: min=%d,max=%d: %d\n", min, max, ret);
	155	return ret;
	156	}
	157
	158	static struct io_u fio_vsyncio_event(struct thread_data td, int event)
	159	{
	160	struct syncio_data *sd = td->io_ops->data;
	161
	162	return sd->io_us[event];
	163	}
	164
	165	static int fio_vsyncio_append(struct thread_data td, struct io_u io_u)
	166	{
	167	struct syncio_data *sd = td->io_ops->data;
	168
5f9099ea	169	if (ddir_sync(io_u->ddir))
1d2af02a JA	170	return 0;
	171
	172	if (io_u->offset == sd->last_offset && io_u->file == sd->last_file &&
	173	io_u->ddir == sd->last_ddir)
	174	return 1;
	175
	176	return 0;
	177	}
	178
	179	static void fio_vsyncio_set_iov(struct syncio_data sd, struct io_u io_u,
2b13e716	180	int idx)
1d2af02a	181	{
2b13e716 JA	182	sd->io_us[idx] = io_u;
	183	sd->iovecs[idx].iov_base = io_u->xfer_buf;
	184	sd->iovecs[idx].iov_len = io_u->xfer_buflen;
1d2af02a JA	185	sd->last_offset = io_u->offset + io_u->xfer_buflen;
	186	sd->last_file = io_u->file;
	187	sd->last_ddir = io_u->ddir;
	188	sd->queued_bytes += io_u->xfer_buflen;
	189	sd->queued++;
	190	}
	191
	192	static int fio_vsyncio_queue(struct thread_data td, struct io_u io_u)
	193	{
	194	struct syncio_data *sd = td->io_ops->data;
	195
	196	fio_ro_check(td, io_u);
	197
	198	if (!fio_vsyncio_append(td, io_u)) {
	199	dprint(FD_IO, "vsyncio_queue: no append (%d)\n", sd->queued);
	200	/*
	201	* If we can't append and have stuff queued, tell fio to
	202	* commit those first and then retry this io
	203	*/
	204	if (sd->queued)
	205	return FIO_Q_BUSY;
0a28ecda JA	206	if (ddir_sync(io_u->ddir)) {
	207	int ret = do_io_u_sync(td, io_u);
	208
	209	return fio_io_end(td, io_u, ret);
	210	}
cc9159c3	211
1d2af02a JA	212	sd->queued = 0;
	213	sd->queued_bytes = 0;
	214	fio_vsyncio_set_iov(sd, io_u, 0);
	215	} else {
	216	if (sd->queued == td->o.iodepth) {
	217	dprint(FD_IO, "vsyncio_queue: max depth %d\n", sd->queued);
	218	return FIO_Q_BUSY;
	219	}
	220
	221	dprint(FD_IO, "vsyncio_queue: append\n");
	222	fio_vsyncio_set_iov(sd, io_u, sd->queued);
	223	}
	224
	225	dprint(FD_IO, "vsyncio_queue: depth now %d\n", sd->queued);
	226	return FIO_Q_QUEUED;
	227	}
	228
	229	/*
	230	* Check that we transferred all bytes, or saw an error, etc
	231	*/
	232	static int fio_vsyncio_end(struct thread_data *td, ssize_t bytes)
	233	{
	234	struct syncio_data *sd = td->io_ops->data;
	235	struct io_u *io_u;
	236	unsigned int i;
	237	int err;
	238
	239	/*
	240	* transferred everything, perfect
	241	*/
	242	if (bytes == sd->queued_bytes)
	243	return 0;
	244
	245	err = errno;
	246	for (i = 0; i < sd->queued; i++) {
	247	io_u = sd->io_us[i];
	248
	249	if (bytes == -1) {
	250	io_u->error = err;
	251	} else {
	252	unsigned int this_io;
	253
	254	this_io = bytes;
	255	if (this_io > io_u->xfer_buflen)
	256	this_io = io_u->xfer_buflen;
	257
	258	io_u->resid = io_u->xfer_buflen - this_io;
	259	io_u->error = 0;
	260	bytes -= this_io;
	261	}
	262	}
	263
	264	if (bytes == -1) {
	265	td_verror(td, err, "xfer vsync");
	266	return -err;
	267	}
	268
	269	return 0;
	270	}
	271
	272	static int fio_vsyncio_commit(struct thread_data *td)
	273	{
	274	struct syncio_data *sd = td->io_ops->data;
	275	struct fio_file *f;
276	ssize_t ret;
277
278	if (!sd->queued)
279	return 0;
280
838bc709	281	io_u_mark_submit(td, sd->queued);
1d2af02a JA	282	f = sd->last_file;
	283
	284	if (lseek(f->fd, sd->io_us[0]->offset, SEEK_SET) == -1) {
	285	int err = -errno;
	286
	287	td_verror(td, errno, "lseek");
	288	return err;
	289	}
	290
	291	if (sd->last_ddir == DDIR_READ)
	292	ret = readv(f->fd, sd->iovecs, sd->queued);
	293	else
	294	ret = writev(f->fd, sd->iovecs, sd->queued);
	295
	296	dprint(FD_IO, "vsyncio_commit: %d\n", (int) ret);
e51cf72c JA	297	sd->events = sd->queued;
e51cf72c JA	298	sd->queued = 0;
1d2af02a JA	299	return fio_vsyncio_end(td, ret);
	300	}
	301
	302	static int fio_vsyncio_init(struct thread_data *td)
	303	{
	304	struct syncio_data *sd;
	305
	306	sd = malloc(sizeof(*sd));
	307	memset(sd, 0, sizeof(*sd));
	308	sd->last_offset = -1ULL;
	309	sd->iovecs = malloc(td->o.iodepth * sizeof(struct iovec));
	310	sd->io_us = malloc(td->o.iodepth * sizeof(struct io_u *));
	311
	312	td->io_ops->data = sd;
	313	return 0;
	314	}
	315
	316	static void fio_vsyncio_cleanup(struct thread_data *td)
	317	{
	318	struct syncio_data *sd = td->io_ops->data;
	319
	320	free(sd->iovecs);
	321	free(sd->io_us);
	322	free(sd);
1d2af02a JA	323	}
1d2af02a JA	324
a31041ea	325	static struct ioengine_ops ioengine_rw = {
2866c82d JA	326	.name = "sync",
2866c82d JA	327	.version = FIO_IOOPS_VERSION,
2866c82d JA	328	.prep = fio_syncio_prep,
2866c82d JA	329	.queue = fio_syncio_queue,
b5af8293 JA	330	.open_file = generic_open_file,
b5af8293 JA	331	.close_file = generic_close_file,
df9c26b1	332	.get_file_size = generic_get_file_size,
2866c82d JA	333	.flags = FIO_SYNCIO,
2866c82d JA	334	};
5f350952	335
a31041ea	336	static struct ioengine_ops ioengine_prw = {
	337	.name = "psync",
	338	.version = FIO_IOOPS_VERSION,
2bd3eabc	339	.queue = fio_psyncio_queue,
a31041ea	340	.open_file = generic_open_file,
a31041ea	341	.close_file = generic_close_file,
df9c26b1	342	.get_file_size = generic_get_file_size,
a31041ea	343	.flags = FIO_SYNCIO,
	344	};
	345
1d2af02a JA	346	static struct ioengine_ops ioengine_vrw = {
	347	.name = "vsync",
	348	.version = FIO_IOOPS_VERSION,
	349	.init = fio_vsyncio_init,
	350	.cleanup = fio_vsyncio_cleanup,
	351	.queue = fio_vsyncio_queue,
	352	.commit = fio_vsyncio_commit,
	353	.event = fio_vsyncio_event,
	354	.getevents = fio_vsyncio_getevents,
	355	.open_file = generic_open_file,
	356	.close_file = generic_close_file,
df9c26b1	357	.get_file_size = generic_get_file_size,
1d2af02a JA	358	.flags = FIO_SYNCIO,
	359	};
	360
07fc0acd JA	361	#ifdef CONFIG_PWRITEV
	362	static struct ioengine_ops ioengine_pvrw = {
	363	.name = "pvsync",
	364	.version = FIO_IOOPS_VERSION,
	365	.init = fio_vsyncio_init,
	366	.cleanup = fio_vsyncio_cleanup,
	367	.queue = fio_pvsyncio_queue,
	368	.open_file = generic_open_file,
	369	.close_file = generic_close_file,
	370	.get_file_size = generic_get_file_size,
	371	.flags = FIO_SYNCIO,
	372	};
	373	#endif
	374
5f350952 JA	375	static void fio_init fio_syncio_register(void)
5f350952 JA	376	{
a31041ea	377	register_ioengine(&ioengine_rw);
a31041ea	378	register_ioengine(&ioengine_prw);
1d2af02a	379	register_ioengine(&ioengine_vrw);
9a0ced5a	380	#ifdef CONFIG_PWRITEV
07fc0acd	381	register_ioengine(&ioengine_pvrw);
9a0ced5a	382	#endif
5f350952 JA	383	}
	384
	385	static void fio_exit fio_syncio_unregister(void)
	386	{
a31041ea	387	unregister_ioengine(&ioengine_rw);
a31041ea	388	unregister_ioengine(&ioengine_prw);
1d2af02a	389	unregister_ioengine(&ioengine_vrw);
9a0ced5a	390	#ifdef CONFIG_PWRITEV
07fc0acd	391	unregister_ioengine(&ioengine_pvrw);
9a0ced5a	392	#endif
5f350952	393	}