lsfd: (man) write about XMODE.m and classical system calls for multiplexing

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/misc-utils/lsfd.1.adoc b/misc-utils/lsfd.1.adoc
index 2801cda108ff05e8165a72155247a543220a56f2..771b736c6cd8225212d72bf8d968ebfab1270337 100644 (file)
--- a/misc-utils/lsfd.1.adoc
+++ b/misc-utils/lsfd.1.adoc
@@ -515,8 +515,12 @@ read/shared and write/exclusive locks or leases are taken by a file
 descriptor, _L_ is used as the flag.
 +
 [-m]:::
-Multiplexed. If the file descriptor is targeted by a eventpoll file,
-this bit flag is set.
+Multiplexed. If the file descriptor is targeted by a eventpoll file
+or classical system calls for multiplexing (select, pselect, poll, and
+ppoll), this bit flag is set. Note that if an invocaiton of the
+classical system calls is interrupted, *lsfd* may fail to mark _m_
+on the file descriptors monitored by the invocaiton.
+See *restart_syscall*(2).
 
 == FILTER EXPRESSION