Adding the --perist option which is specified with --add-ramdisk-swap
or --add-temp-swap, to make the swap space created, permanent after the
pool resize is completed.
Signed-off-by: Avantika Mathur <mat...@us.ibm.com>
---
Index: libhugetlbfs/hugeadm.c
===================================================================
--- libhugetlbfs.orig/hugeadm.c 2009-06-29 01:57:01.000000000 -0700
+++ libhugetlbfs/hugeadm.c 2009-06-29 02:06:23.000000000 -0700
@@ -93,6 +93,8 @@
CONT("size is 5 huge pages. Optional arg sets size to 'count' huge pages");
OPTION("--add-ramdisk-swap", "Specified with --pool-pages-min to create");
CONT("swap space on ramdisks. By default, swap is removed after the resize.");
+ OPTION("--persist", "Specified with --add-temp-swap or --add-ramdisk-swap");
+ CONT("options to make swap space persist after the resize.");
OPTION("--enable-zone-movable", "Use ZONE_MOVABLE for huge pages");
OPTION("--disable-zone-movable", "Do not use ZONE_MOVABLE for huge pages");
OPTION("--create-mounts", "Creates a mount point for each available");
@@ -129,6 +131,7 @@
int opt_movable = -1;
int opt_temp_swap = 0;
int opt_ramdisk_swap = 0;
+int opt_swap_persist = 0;
int verbose_level = VERBOSITY_DEFAULT;
void setup_environment(char *var, char *val)
@@ -212,6 +215,7 @@
#define LONG_SWAP ('s' << 8)
#define LONG_SWAP_DISK (LONG_SWAP|'d')
#define LONG_SWAP_RAMDISK (LONG_SWAP|'r')
+#define LONG_SWAP_PERSIST (LONG_SWAP|'p')
#define LONG_PAGE ('P' << 8)
#define LONG_PAGE_SIZES (LONG_PAGE|'s')
@@ -895,7 +899,7 @@
get_pool_size(page_size, &pools[pos]);
}
- if (min > min_orig) {
+ if (min > min_orig && !opt_swap_persist) {
if (opt_temp_swap)
rem_temp_swap();
else if (opt_ramdisk_swap)
@@ -976,6 +980,7 @@
{"hard", no_argument, NULL, LONG_HARD},
{"add-temp-swap", optional_argument, NULL, LONG_SWAP_DISK},
{"add-ramdisk-swap", no_argument, NULL, LONG_SWAP_RAMDISK},
+ {"persist", no_argument, NULL, LONG_SWAP_PERSIST},
{"create-mounts", no_argument, NULL, LONG_CREATE_MOUNTS},
{"create-user-mounts", required_argument, NULL, LONG_CREATE_USER_MOUNTS},
{"create-group-mounts", required_argument, NULL, LONG_CREATE_GROUP_MOUNTS},
@@ -1042,6 +1047,9 @@
opt_ramdisk_swap = 1;
break;
+ case LONG_SWAP_PERSIST:
+ opt_swap_persist = 1;
+
case LONG_LIST_ALL_MOUNTS:
opt_list_mounts = 1;
break;
Index: libhugetlbfs/man/hugeadm.8
===================================================================
--- libhugetlbfs.orig/man/hugeadm.8 2009-06-29 02:07:04.000000000 -0700
+++ libhugetlbfs/man/hugeadm.8 2009-06-29 02:10:35.000000000 -0700
@@ -171,6 +171,13 @@
Swap is only created for a positive resize, and by default is removed once
the resize operation is completed.
+.TP
+.B --persist
+
+This option is specified with the --add-temp-swap or --add-ramdisk-swap to
+make the swap space persist after the resize operation is completed. The swap
+spaces can later be removed manually using the swapoff command.
+
.PP
The following options affect the verbosity of libhugetlbfs.
------------------------------------------------------------------------------
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