X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fio.1;h=5d0988b2cef496bfd8cd945aba0f332f04dee9ac;hp=60f787a140940f9ad5888c84fd96cf8e60f456ff;hb=e76b1da43606f86fc23c8acb63114cba0d80a1c7;hpb=3843deb322eb7b54d2d19d7b1ce19c5dc44d57ff

diff --git a/fio.1 b/fio.1
index 60f787a1..5d0988b2 100644
--- a/fio.1
+++ b/fio.1
@@ -380,6 +380,27 @@ How many I/Os to perform before issuing an \fBfsync\fR\|(2) of dirty data.  If
 Like \fBfsync\fR, but uses \fBfdatasync\fR\|(2) instead to only sync the
 data parts of the file. Default: 0.
 .TP
+.BI sync_file_range \fR=\fPstr:int
+Use sync_file_range() for every \fRval\fP number of write operations. Fio will
+track range of writes that have happened since the last sync_file_range() call.
+\fRstr\fP can currently be one or more of:
+.RS
+.TP
+.B wait_before
+SYNC_FILE_RANGE_WAIT_BEFORE
+.TP
+.B write
+SYNC_FILE_RANGE_WRITE
+.TP
+.B wait_after
+SYNC_FILE_RANGE_WRITE
+.TP
+.RE
+.P
+So if you do sync_file_range=wait_before,write:8, fio would use
+\fBSYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE\fP for every 8 writes.
+Also see the sync_file_range(2) man page.  This option is Linux specific.
+.TP
 .BI overwrite \fR=\fPbool
 If writing, setup the file first and do overwrites.  Default: false.
 .TP