lvm2: fix mlock Out of memory errors on musl

srcpkgs/lvm2/patches/mlockall-default-config.patch

@@ -0,0 +1,14 @@
+--- ./lib/config/defaults.h.orig	2017-04-27 18:16:05.879936377 +0200
++++ ./lib/config/defaults.h	2017-04-27 18:16:35.141849047 +0200
+@@ -55,7 +55,11 @@
+ #define DEFAULT_LVMLOCKD_LOCK_RETRIES 3
+ #define DEFAULT_LVMETAD_UPDATE_WAIT_TIME 10
+ #define DEFAULT_PRIORITISE_WRITE_LOCKS 1
++#ifdef __GLIBC__
+ #define DEFAULT_USE_MLOCKALL 0
++#else
++#define DEFAULT_USE_MLOCKALL 1
++#endif
+ #define DEFAULT_METADATA_READ_ONLY 0
+ #define DEFAULT_LVDISPLAY_SHOWS_FULL_DEVICE_PATH 0
+ #define DEFAULT_UNKNOWN_DEVICE_NAME "[unknown]"

srcpkgs/lvm2/template

@@ -1,7 +1,7 @@
 # Template file for 'lvm2'
 pkgname=lvm2
 version=2.02.170
-revision=1
+revision=2
 wrksrc="LVM2.${version}"
 build_style=gnu-configure
 configure_args="--disable-selinux --enable-readline --enable-pkgconfig
@@ -26,6 +26,11 @@ checksum=9372d2523027a751cf54eafdf8b761ff843969520c32b0c50abfba65e23d0d40
 
 post_install() {
 	sed -i 's,use_lvmetad = 1,use_lvmetad = 0,' ${DESTDIR}/etc/lvm/lvm.conf
+	case $XBPS_TARGET_MACHINE in
+		*-musl)
+			sed -i 's,use_mlockall = 0,use_mlockall = 1,' ${DESTDIR}/etc/lvm/lvm.conf
+		;;
+	esac
 	vsv lvmetad
 }