Make lib/strntol.c a stand-alone library

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index cae95b7720f210893bb7b89a5b445ba61a980bf5..ffdcb755f1a25a0f41158ae2767826a3ec910ac8 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -543,6 +543,8 @@ Parameter types
 
        If the option accepts an upper and lower range, use a colon ':' or
        minus '-' to separate such values. See :ref:`irange <irange>`.
+       If the lower value specified happens to be larger than the upper value,
+       two values are swapped.
 
 .. _bool:
 
@@ -1673,6 +1675,11 @@ I/O engine
                        DDIR_TRIM
                                does fallocate(,mode = FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE).
 
+               **ftruncate**
+                       I/O engine that sends :manpage:`ftruncate(2)` operations in response
+                       to write (DDIR_WRITE) events. Each ftruncate issued sets the file's
+                       size to the current block offset. Block size is ignored.
+
                **e4defrag**
                        I/O engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate
                        defragment activity in request to DDIR_WRITE event.