filesetup: limit rand map to the actual IO size, if needed

No need allocating a larger map than we need.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/filesetup.c b/filesetup.c
index ab5cc48da71ddb317bab84109eb1845b9a7818e5..478bda8cb0331017b55574d8df67c09cd1151bed 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -956,7 +956,9 @@ int init_random_map(struct thread_data *td)
                return 0;
 
        for_each_file(td, f, i) {
                return 0;
 
        for_each_file(td, f, i) {

-               blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
+               uint64_t file_size = min(f->real_file_size, f->io_size);
+
+               blocks = (file_size + td->o.rw_min_bs - 1) /

                                (unsigned long long) td->o.rw_min_bs;
                if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
                        unsigned long seed;
                                (unsigned long long) td->o.rw_min_bs;
                if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
                        unsigned long seed;