Add support for fdatasync()

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 0eab6e113a9d5c99fae86f1f30bb2a4196b97f14..f323c204d3c67be97e98926ae8efd0ae1d82314d 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -530,6 +530,9 @@ fsync=int   If writing to a file, issue a sync of the dirty data
                not sync the file. The exception is the sg io engine, which
                synchronizes the disk cache anyway.
 
+fsyncdata=int  Like fsync= but uses fdatasync() to only sync data and not
+               metadata blocks.
+
 overwrite=bool If true, writes to a file will always overwrite existing
                data. If the file doesn't already exist, it will be
                created before the write phase begins. If the file exists