Add new writetrim rw= mode for trims preceding writes

[fio.git] / io_u.c

diff --git a/io_u.c b/io_u.c
index 16065128c324e76e3cf9326ff1824fec42baad5b..aecc2175008026ee1ccc1ed86f2e7b93d0a0842a 100644 (file)
--- a/io_u.c
+++ b/io_u.c
@@ -668,7 +668,17 @@ static enum fio_ddir get_rw_ddir(struct thread_data *td)
 
 static void set_rw_ddir(struct thread_data *td, struct io_u *io_u)
 {
-       io_u->ddir = io_u->acct_ddir = get_rw_ddir(td);
+       enum fio_ddir ddir = get_rw_ddir(td);
+
+       if (td_writetrim(td)) {
+               struct fio_file *f = io_u->file;
+               if (f->last_pos[DDIR_WRITE] == f->last_pos[DDIR_TRIM])
+                       ddir = DDIR_TRIM;
+               else
+                       ddir = DDIR_WRITE;
+       }
+
+       io_u->ddir = io_u->acct_ddir = ddir;
 
        if (io_u->ddir == DDIR_WRITE && (td->io_ops->flags & FIO_BARRIER) &&
            td->o.barrier_blocks &&