X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=engines%2Fmmap.c;h=27d5d25515f2016526cbca985e8bf98bc356e326;hp=d32fe969832009d871cb9956b0950ef6413d2a29;hb=b5af82930ccfd7dda6a1b11794efb452eb76d8dc;hpb=36167d82e5f49dee91c6d2cd426068edee90e36f

diff --git a/engines/mmap.c b/engines/mmap.c
index d32fe969..27d5d255 100644
--- a/engines/mmap.c
+++ b/engines/mmap.c
@@ -37,16 +37,99 @@ static int fio_mmapio_queue(struct thread_data *td, struct io_u *io_u)
 	}
 
 	if (io_u->error)
-		td_verror(td, io_u->error);
+		td_verror(td, io_u->error, "sync");
 
 	return FIO_Q_COMPLETED;
 }
 
+static int fio_mmapio_init(struct thread_data *td)
+{
+	struct fio_file *f;
+	int i;
+
+	if (!td_write(td))
+		return 0;
+
+	/*
+	 * We need to truncate the files to the right size, if
+	 * we are writing to it.
+	 */
+	for_each_file(td, f, i) {
+		if (ftruncate(f->fd, f->file_size) < 0) {
+			td_verror(td, errno, "ftruncate");
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+static int fio_mmapio_open(struct thread_data *td, struct fio_file *f)
+{
+	int ret, flags;
+
+	ret = generic_open_file(td, f);
+	if (ret)
+		return ret;
+
+	if (td_rw(td))
+		flags = PROT_READ | PROT_WRITE;
+	else if (td_write(td)) {
+		flags = PROT_WRITE;
+
+		if (td->verify != VERIFY_NONE)
+			flags |= PROT_READ;
+	} else
+		flags = PROT_READ;
+
+	f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
+	if (f->mmap == MAP_FAILED) {
+		f->mmap = NULL;
+		td_verror(td, errno, "mmap");
+		goto err;
+	}
+
+	if (file_invalidate_cache(td, f))
+		goto err;
+
+	if (!td_random(td)) {
+		if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
+			td_verror(td, errno, "madvise");
+			goto err;
+		}
+	} else {
+		if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
+			td_verror(td, errno, "madvise");
+			goto err;
+		}
+	}
+
+	return 0;
+
+err:
+	if (f->mmap)
+		munmap(f->mmap, f->file_size);
+	generic_close_file(td, f);
+	return 1;
+}
+
+static void fio_mmapio_close(struct thread_data fio_unused *td,
+			     struct fio_file *f)
+{
+	if (f->mmap) {
+		munmap(f->mmap, f->file_size);
+		f->mmap = NULL;
+	}
+}
+
 static struct ioengine_ops ioengine = {
 	.name		= "mmap",
 	.version	= FIO_IOOPS_VERSION,
 	.queue		= fio_mmapio_queue,
-	.flags		= FIO_SYNCIO | FIO_MMAPIO,
+	.init		= fio_mmapio_init,
+	.open_file	= fio_mmapio_open,
+	.close_file	= fio_mmapio_close,
+	.flags		= FIO_SYNCIO,
 };
 
 static void fio_init fio_mmapio_register(void)