*/
#include <stdio.h>
#include <stdlib.h>
-#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
#include "../verify.h"
/*
- * Limits us to 1GB of mapped files in total
+ * Limits us to 1GiB of mapped files in total
*/
#define MMAP_TOTAL_SZ (1 * 1024 * 1024 * 1024UL)
static unsigned long mmap_map_size;
-static unsigned long mmap_map_mask;
struct fio_mmap_data {
void *mmap_ptr;
off_t mmap_off;
};
+static bool fio_madvise_file(struct thread_data *td, struct fio_file *f,
+ size_t length)
+
+{
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
+
+ if (!td->o.fadvise_hint)
+ return true;
+
+ if (!td_random(td)) {
+ if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_SEQUENTIAL) < 0) {
+ td_verror(td, errno, "madvise");
+ return false;
+ }
+ } else {
+ if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_RANDOM) < 0) {
+ td_verror(td, errno, "madvise");
+ return false;
+ }
+ }
+
+ return true;
+}
+
static int fio_mmap_file(struct thread_data *td, struct fio_file *f,
size_t length, off_t off)
{
- struct fio_mmap_data *fmd = (struct fio_mmap_data *) (uintptr_t) f->engine_data;
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
int flags = 0;
- if (td_rw(td))
+ if (td_rw(td) && !td->o.verify_only)
flags = PROT_READ | PROT_WRITE;
- else if (td_write(td)) {
+ else if (td_write(td) && !td->o.verify_only) {
flags = PROT_WRITE;
if (td->o.verify != VERIFY_NONE)
goto err;
}
- if (!td_random(td)) {
- if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_SEQUENTIAL) < 0) {
- td_verror(td, errno, "madvise");
- goto err;
- }
- } else {
- if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_RANDOM) < 0) {
- td_verror(td, errno, "madvise");
- goto err;
- }
+ if (!fio_madvise_file(td, f, length))
+ goto err;
+
+ if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_DONTNEED) < 0) {
+ td_verror(td, errno, "madvise");
+ goto err;
}
+#ifdef FIO_MADV_FREE
+ if (f->filetype == FIO_TYPE_BLOCK)
+ (void) posix_madvise(fmd->mmap_ptr, fmd->mmap_sz, FIO_MADV_FREE);
+#endif
+
err:
if (td->error && fmd->mmap_ptr)
munmap(fmd->mmap_ptr, length);
static int fio_mmapio_prep_limited(struct thread_data *td, struct io_u *io_u)
{
struct fio_file *f = io_u->file;
- struct fio_mmap_data *fmd = (struct fio_mmap_data *) (uintptr_t) f->engine_data;
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
if (io_u->buflen > mmap_map_size) {
log_err("fio: bs too big for mmap engine\n");
static int fio_mmapio_prep_full(struct thread_data *td, struct io_u *io_u)
{
struct fio_file *f = io_u->file;
- struct fio_mmap_data *fmd = (struct fio_mmap_data *) (uintptr_t) f->engine_data;
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
int ret;
if (fio_file_partial_mmap(f))
return EINVAL;
+ if (io_u->offset != (size_t) io_u->offset ||
+ f->io_size != (size_t) f->io_size) {
+ fio_file_set_partial_mmap(f);
+ return EINVAL;
+ }
fmd->mmap_sz = f->io_size;
fmd->mmap_off = 0;
static int fio_mmapio_prep(struct thread_data *td, struct io_u *io_u)
{
struct fio_file *f = io_u->file;
- struct fio_mmap_data *fmd = (struct fio_mmap_data *) (uintptr_t) f->engine_data;
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
int ret;
/*
* It fits within existing mapping, use it
*/
if (io_u->offset >= fmd->mmap_off &&
- io_u->offset + io_u->buflen < fmd->mmap_off + fmd->mmap_sz)
+ io_u->offset + io_u->buflen <= fmd->mmap_off + fmd->mmap_sz)
goto done;
/*
return 0;
}
-static int fio_mmapio_queue(struct thread_data *td, struct io_u *io_u)
+static enum fio_q_status fio_mmapio_queue(struct thread_data *td,
+ struct io_u *io_u)
{
struct fio_file *f = io_u->file;
- struct fio_mmap_data *fmd = (struct fio_mmap_data *) (uintptr_t) f->engine_data;
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
fio_ro_check(td, io_u);
static int fio_mmapio_init(struct thread_data *td)
{
struct thread_options *o = &td->o;
- unsigned long shift, mask;
- if ((td->o.rw_min_bs & page_mask) &&
+ if ((o->rw_min_bs & page_mask) &&
(o->odirect || o->fsync_blocks || o->fdatasync_blocks)) {
log_err("fio: mmap options dictate a minimum block size of "
"%llu bytes\n", (unsigned long long) page_size);
return 1;
}
- mmap_map_size = MMAP_TOTAL_SZ / td->o.nr_files;
- mask = mmap_map_size;
- shift = 0;
- do {
- mask >>= 1;
- if (!mask)
- break;
- shift++;
- } while (1);
-
- mmap_map_mask = 1UL << shift;
+ mmap_map_size = MMAP_TOTAL_SZ / o->nr_files;
return 0;
}
fmd = calloc(1, sizeof(*fmd));
if (!fmd) {
- int fio_unused ret;
- ret = generic_close_file(td, f);
+ int fio_unused __ret;
+ __ret = generic_close_file(td, f);
return 1;
}
- f->engine_data = (uintptr_t) fmd;
+ FILE_SET_ENG_DATA(f, fmd);
return 0;
}
static int fio_mmapio_close_file(struct thread_data *td, struct fio_file *f)
{
- struct fio_mmap_data *fmd;
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
- fmd = (struct fio_mmap_data *) (uintptr_t) f->engine_data;
- f->engine_data = 0;
+ FILE_SET_ENG_DATA(f, NULL);
free(fmd);
+ fio_file_clear_partial_mmap(f);
return generic_close_file(td, f);
}
-static int fio_mmapio_invalidate(struct thread_data *td, struct fio_file *f)
-{
- struct fio_mmap_data *fmd = (struct fio_mmap_data *) (uintptr_t) f->engine_data;
- int ret;
-
- ret = posix_madvise(fmd->mmap_ptr, fmd->mmap_sz, POSIX_MADV_DONTNEED);
-#ifdef FIO_MADV_FREE
- if (f->filetype == FIO_TYPE_BD)
- (void) posix_madvise(fmd->mmap_ptr, fmd->mmap_sz, FIO_MADV_FREE);
-#endif
-
- return ret;
-}
-
static struct ioengine_ops ioengine = {
.name = "mmap",
.version = FIO_IOOPS_VERSION,
.queue = fio_mmapio_queue,
.open_file = fio_mmapio_open_file,
.close_file = fio_mmapio_close_file,
- .invalidate = fio_mmapio_invalidate,
.get_file_size = generic_get_file_size,
.flags = FIO_SYNCIO | FIO_NOEXTEND,
};