swapon: optional -p PRIO support (by Francois Barel <frabar666 AT gmail.com>)

function                                             old     new   delta
swap_on_off_main                                     153     216     +63
packed_usage                                       24190   24214     +24
swap_enable_disable                                  127     131      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 91/0)               Total: 91 bytes

1 files changed, 4 insertions, 1 deletions

diff --git a/include/usage.h b/include/usage.h
index 56198cfa5..d5c53a255 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -3809,11 +3809,14 @@
      "\n        -a      Stop swapping on all swap devices" \
 
 #define swapon_trivial_usage \
-       "[-a] [DEVICE]"
+       "[-a]" USE_FEATURE_SWAPON_PRI(" [-p pri]") " [DEVICE]"
 #define swapon_full_usage "\n\n" \
        "Start swapping on DEVICE\n" \
      "\nOptions:" \
      "\n        -a      Start swapping on all swap devices" \
+        USE_FEATURE_SWAPON_PRI( \
+     "\n        -p pri  Set swap device priority" \
+        ) \
 
 #define switch_root_trivial_usage \
        "[-c /dev/console] NEW_ROOT NEW_INIT [ARGUMENTS_TO_INIT]"