loop.4: Add some details about lo_flags

Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man4/loop.4 b/man4/loop.4
index fc41668b5c249652ae454ceb90a29ae051ee3c25..928fa8c2c493c586f285746f0972d7cc32c1273a 100644 (file)
--- a/man4/loop.4
+++ b/man4/loop.4
@@ -135,6 +135,13 @@ Allow automatic partition scanning.
 .\" commit 2e5ab5f379f96a6207c45be40c357ebb1beb8ef3
 Use direct I/O mode to access the backing file.
 .RE
+.IP
+The only lo_flags that can be modified by using
+.BR LOOP_SET_STATUS
+are
+.BR LO_FLAGS_AUTOCLEAR
+and
+.BR LO_FLAGS_PARTSCAN .
 .TP
 .B LOOP_GET_STATUS
 Get the status of the loop device.