X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=engines%2Flibaio.c;h=7ef3ff8074d005be36a3ef5d90926dc1cc683a0e;hb=136f6b79180f6bd3f3e9ec8a97b9636a1bb71e15;hp=895b914cf7e044c2bd8ba828035cc3aa8700e391;hpb=2dc1bbeb58edc85f2829eed6729862c438ea2353;p=fio.git

diff --git a/engines/libaio.c b/engines/libaio.c
index 895b914c..7ef3ff80 100644
--- a/engines/libaio.c
+++ b/engines/libaio.c
@@ -11,7 +11,6 @@
 #include <assert.h>
 
 #include "../fio.h"
-#include "../os.h"
 
 #ifdef FIO_HAVE_LIBAIO
 
@@ -61,8 +60,8 @@ static struct io_u *fio_libaio_event(struct thread_data *td, int event)
 	return io_u;
 }
 
-static int fio_libaio_getevents(struct thread_data *td, int min, int max,
-				struct timespec *t)
+static int fio_libaio_getevents(struct thread_data *td, unsigned int min,
+				unsigned int max, struct timespec *t)
 {
 	struct libaio_data *ld = td->io_ops->data;
 	long r;
@@ -87,6 +86,8 @@ static int fio_libaio_queue(struct thread_data *td, struct io_u *io_u)
 {
 	struct libaio_data *ld = td->io_ops->data;
 
+	fio_ro_check(td, io_u);
+
 	if (ld->iocbs_nr == (int) td->o.iodepth)
 		return FIO_Q_BUSY;
 
@@ -132,36 +133,26 @@ static int fio_libaio_commit(struct thread_data *td)
 	struct libaio_data *ld = td->io_ops->data;
 	struct iocb **iocbs;
 	struct io_u **io_us;
-	int ret, iocbs_nr;
+	int ret;
 
 	if (!ld->iocbs_nr)
 		return 0;
 
-	iocbs_nr = ld->iocbs_nr;
 	io_us = ld->io_us;
 	iocbs = ld->iocbs;
 	do {
-		ret = io_submit(ld->aio_ctx, iocbs_nr, iocbs);
-		if (ret == iocbs_nr) {
-			fio_libaio_queued(td, io_us, ret);
-			ret = 0;
-			break;
-		} else if (ret > 0) {
+		ret = io_submit(ld->aio_ctx, ld->iocbs_nr, iocbs);
+		if (ret > 0) {
 			fio_libaio_queued(td, io_us, ret);
+			ld->iocbs_nr -= ret;
 			io_us += ret;
 			iocbs += ret;
-			iocbs_nr -= ret;
-			continue;
-		} else if (ret == -EAGAIN || !ret)
-			usleep(100);
-		else if (ret == -EINTR)
+			ret = 0;
+		} else if (!ret || ret == -EAGAIN || ret == -EINTR)
 			continue;
 		else
 			break;
-	} while (1);
-
-	if (!ret)
-		ld->iocbs_nr = 0;
+	} while (ld->iocbs_nr);
 
 	return ret;
 }
@@ -190,10 +181,20 @@ static void fio_libaio_cleanup(struct thread_data *td)
 static int fio_libaio_init(struct thread_data *td)
 {
 	struct libaio_data *ld = malloc(sizeof(*ld));
+	static int warn_print;
+	int err;
+
+	if (td->o.iodepth > 1 && !td->o.odirect && !warn_print) {
+		log_info("fio: libaio engine is only async for non-buffered IO\n");
+		warn_print = 1;
+	}
 
 	memset(ld, 0, sizeof(*ld));
-	if (io_queue_init(td->o.iodepth, &ld->aio_ctx)) {
-		td_verror(td, errno, "io_queue_init");
+
+	err = io_queue_init(td->o.iodepth, &ld->aio_ctx);
+	if (err) {
+		td_verror(td, -err, "io_queue_init");
+		log_err("fio: check /proc/sys/fs/aio-max-nr\n");
 		free(ld);
 		return 1;
 	}