X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=engines%2Fsyslet-rw.c;h=0b2497a7e8c2029660825a1dc4aeb7ff533a64bb;hp=40298cbd24496a3811ee28950d4def7bf22df01a;hb=1760e679cfb99d95e783ba1c0a936b88c8a3d706;hpb=b5af82930ccfd7dda6a1b11794efb452eb76d8dc

diff --git a/engines/syslet-rw.c b/engines/syslet-rw.c
index 40298cbd..0b2497a7 100644
--- a/engines/syslet-rw.c
+++ b/engines/syslet-rw.c
@@ -1,5 +1,8 @@
 /*
- * read/write() engine that uses syslet to be async
+ * syslet engine
+ *
+ * IO engine that does regular pread(2)/pwrite(2) to transfer data, but
+ * with syslets to make the execution async.
  *
  */
 #include <stdio.h>
@@ -7,12 +10,21 @@
 #include <unistd.h>
 #include <errno.h>
 #include <assert.h>
+#include <asm/unistd.h>
 
 #include "../fio.h"
 #include "../os.h"
 
 #ifdef FIO_HAVE_SYSLET
 
+#ifdef __NR_pread64
+#define __NR_fio_pread	__NR_pread64
+#define __NR_fio_pwrite	__NR_pwrite64
+#else
+#define __NR_fio_pread	__NR_pread
+#define __NR_fio_pwrite	__NR_pwrite
+#endif
+
 struct syslet_data {
 	struct io_u **events;
 	unsigned int nr_events;
@@ -46,7 +58,7 @@ static void fio_syslet_complete_atom(struct thread_data *td,
 
 		io_u = atom->private;
 		ret = *atom->ret_ptr;
-		if (ret > 0)
+		if (ret >= 0)
 			io_u->resid = io_u->xfer_buflen - ret;
 		else if (ret < 0)
 			io_u->error = ret;
@@ -154,9 +166,9 @@ static void fio_syslet_prep_rw(struct io_u *io_u, struct fio_file *f)
 	 * prepare rw
 	 */
 	if (io_u->ddir == DDIR_READ)
-		nr = __NR_pread64;
+		nr = __NR_fio_pread;
 	else
-		nr = __NR_pwrite64;
+		nr = __NR_fio_pwrite;
 
 	init_atom(&io_u->req.atom, nr, &f->fd, &io_u->xfer_buf,
 		  &io_u->xfer_buflen, &io_u->offset, &io_u->req.ret, 0, io_u);