Add details of file number/size related options to HOWTO

[fio.git] / io_u.c

diff --git a/io_u.c b/io_u.c
index b6d530f2a23a542d28673587ababf8a0e091f3e9..46d97319fc174512fc4ca353486144c57097db31 100644 (file)
--- a/io_u.c
+++ b/io_u.c
@@ -62,6 +62,7 @@ static uint64_t last_block(struct thread_data *td, struct fio_file *f,
 
        /*
         * Hmm, should we make sure that ->io_size <= ->real_file_size?
+        * -> not for now since there is code assuming it could go either.
         */
        max_size = f->io_size;
        if (max_size > f->real_file_size)
@@ -531,8 +532,7 @@ static unsigned int __get_next_buflen(struct thread_data *td, struct io_u *io_u,
        int ddir = io_u->ddir;
        unsigned int buflen = 0;
        unsigned int minbs, maxbs;
-       uint64_t frand_max;
-       unsigned long r;
+       uint64_t frand_max, r;
 
        assert(ddir_rw(ddir));
 
@@ -561,7 +561,7 @@ static unsigned int __get_next_buflen(struct thread_data *td, struct io_u *io_u,
                        if (buflen < minbs)
                                buflen = minbs;
                } else {
-                       long perc = 0;
+                       long long perc = 0;
                        unsigned int i;
 
                        for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
@@ -569,16 +569,14 @@ static unsigned int __get_next_buflen(struct thread_data *td, struct io_u *io_u,
 
                                buflen = bsp->bs;
                                perc += bsp->perc;
-                               if ((r * 100UL <= frand_max * perc) &&
+                               if (!perc)
+                                       break;
+                               if ((r / perc <= frand_max / 100ULL) &&
                                    io_u_fits(td, io_u, buflen))
                                        break;
                        }
                }
 
-               if (td->o.verify != VERIFY_NONE)
-                       buflen = (buflen + td->o.verify_interval - 1) &
-                               ~(td->o.verify_interval - 1);
-
                if (!td->o.bs_unaligned && is_power_of_2(minbs))
                        buflen &= ~(minbs - 1);
 
@@ -652,13 +650,17 @@ int io_u_quiesce(struct thread_data *td)
                        completed += ret;
        }
 
+       if (td->flags & TD_F_REGROW_LOGS)
+               regrow_logs(td);
+
        return completed;
 }
 
 static enum fio_ddir rate_ddir(struct thread_data *td, enum fio_ddir ddir)
 {
        enum fio_ddir odir = ddir ^ 1;
-       long usec, now;
+       long usec;
+       uint64_t now;
 
        assert(ddir_rw(ddir));
        now = utime_since_now(&td->start);
@@ -757,8 +759,10 @@ static enum fio_ddir get_rw_ddir(struct thread_data *td)
                ddir = DDIR_READ;
        else if (td_write(td))
                ddir = DDIR_WRITE;
-       else
+       else if (td_trim(td))
                ddir = DDIR_TRIM;
+       else
+               ddir = DDIR_INVAL;
 
        td->rwmix_ddir = rate_ddir(td, ddir);
        return td->rwmix_ddir;
@@ -1901,7 +1905,7 @@ static void init_icd(struct thread_data *td, struct io_completion_data *icd,
        icd->nr = nr;
 
        icd->error = 0;
-       for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++)
+       for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++)
                icd->bytes_done[ddir] = 0;
 }
 
@@ -1940,7 +1944,7 @@ int io_u_sync_complete(struct thread_data *td, struct io_u *io_u)
                return -1;
        }
 
-       for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++)
+       for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++)
                td->bytes_done[ddir] += icd.bytes_done[ddir];
 
        return 0;
@@ -1979,7 +1983,7 @@ int io_u_queued_complete(struct thread_data *td, int min_evts)
                return -1;
        }
 
-       for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++)
+       for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++)
                td->bytes_done[ddir] += icd.bytes_done[ddir];
 
        return ret;