Add specific knob for controlling fallocate() usage
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index 45a96bb..91a1ec3 100644
--- a/HOWTO
+++ b/HOWTO
@@ -324,6 +324,11 @@
randrepeat=bool For random IO workloads, seed the generator in a predictable
way so that results are repeatable across repetitions.
+fallocate=bool By default, fio will use fallocate() to advise the system
+ of the size of the file we are going to write. This can be
+ turned off with fallocate=0. May not be available on all
+ supported platforms.
+
fadvise_hint=bool By default, fio will use fadvise() to advise the kernel
on what IO patterns it is likely to issue. Sometimes you
want to test specific IO patterns without telling the