Extern or forward variable declaration at include/linux/list_sort.h, line 7 References: block/blk-mq.c, line 966 block/blk-mq.c, line 987 block/blk-mq.c, line 1201 block/blk-mq.c, line 1674 block/blk-mq.c, line 1695 block/blk-mq.c, line 1695 block/blk-mq.c, line 1888 block/blk-mq.c, line 3191 block/blk-mq.c, line 3200 block/blk-mq.c, line 3232 drivers/misc/sram.c, line 147 drivers/misc/sram.c, line 148 drivers/misc/sram.c, line 161 fs/gfs2/log.c, line 150 fs/gfs2/log.c, line 279 fs/gfs2/log.c, line 531 fs/gfs2/log.c, line 531 fs/ubifs/replay.c, line 52 fs/ubifs/replay.c, line 72 fs/ubifs/replay.c, line 301 fs/ubifs/replay.c, line 302 virt/kvm/arm/vgic/vgic-its.c, line 112 virt/kvm/arm/vgic/vgic-its.c, line 115 virt/kvm/arm/vgic/vgic-its.c, line 124 virt/kvm/arm/vgic/vgic-its.c, line 134 virt/kvm/arm/vgic/vgic-its.c, line 1817 virt/kvm/arm/vgic/vgic-its.c, line 1831 virt/kvm/arm/vgic/vgic-its.c, line 1978 virt/kvm/arm/vgic/vgic-its.c, line 1979 virt/kvm/arm/vgic/vgic-its.c, line 2117 virt/kvm/arm/vgic/vgic-its.c, line 2118