syslet: we have fls(), use it for rounding ring size up

[fio.git] / filesetup.c

diff --git a/filesetup.c b/filesetup.c
index 47ddacfcddef8083b97e6c7f487af14d79475ae4..6c241516ff9424f526e587b9acd620b817c9cdfb 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -231,7 +231,10 @@ int generic_open_file(struct thread_data *td, struct fio_file *f)
                flags |= OS_O_DIRECT;
        if (td->o.sync_io)
                flags |= O_SYNC;
+       if (f->filetype != FIO_TYPE_FILE)
+               flags |= O_NOATIME;
 
+open_again:
        if (td_write(td)) {
                assert(!read_only);
 
@@ -260,6 +263,11 @@ int generic_open_file(struct thread_data *td, struct fio_file *f)
                char buf[FIO_VERROR_SIZE];
                int __e = errno;
 
+               if (errno == EPERM && (flags & O_NOATIME)) {
+                       flags &= ~O_NOATIME;
+                       goto open_again;
+               }
+
                snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 
                td_verror(td, __e, buf);
@@ -371,7 +379,8 @@ int setup_files(struct thread_data *td)
        /*
         * device/file sizes are zero and no size given, punt
         */
-       if ((!total_size || total_size == -1ULL) && !td->o.size) {
+       if ((!total_size || total_size == -1ULL) && !td->o.size &&
+           !(td->io_ops->flags & FIO_NOIO)) {
                log_err("%s: you need to specify size=\n", td->o.name);
                td_verror(td, EINVAL, "total_file_size");
                return 1;