Merge branch 'akpm' (patches from Andrew Morton)

Merge first patch-bomb from Andrew Morton:
 - Some pidns/fork/exec tweaks
 - OCFS2 updates
 - Most of MM - there remain quite a few memcg parts which depend on
   pending core cgroups changes.  Which might have been already merged -
   I'll check tomorrow...
 - Various misc stuff all over the place
 - A few block bits which I never got around to sending to Jens -
   relatively minor things.
 - MAINTAINERS maintenance
 - A small number of lib/ updates
 - checkpatch updates
 - epoll
 - firmware/dmi-scan
 - Some kprobes work for S390
 - drivers/rtc updates
 - hfsplus feature work
 - vmcore feature work
 - rbtree upgrades
 - AOE updates
 - pktcdvd cleanups
 - PPS
 - memstick
 - w1
 - New "inittmpfs" feature, which does the obvious
 - More IPC work from Davidlohr.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (303 commits)
  lz4: fix compression/decompression signedness mismatch
  ipc: drop ipc_lock_check
  ipc, shm: drop shm_lock_check
  ipc: drop ipc_lock_by_ptr
  ipc, shm: guard against non-existant vma in shmdt(2)
  ipc: document general ipc locking scheme
  ipc,msg: drop msg_unlock
  ipc: rename ids->rw_mutex
  ipc,shm: shorten critical region for shmat
  ipc,shm: cleanup do_shmat pasta
  ipc,shm: shorten critical region for shmctl
  ipc,shm: make shmctl_nolock lockless
  ipc,shm: introduce shmctl_nolock
  ipc: drop ipcctl_pre_down
  ipc,shm: shorten critical region in shmctl_down
  ipc,shm: introduce lockless functions to obtain the ipc object
  initmpfs: use initramfs if rootfstype= or root= specified
  initmpfs: make rootfs use tmpfs when CONFIG_TMPFS enabled
  initmpfs: move rootfs code from fs/ramfs/ to init/
  initmpfs: move bdi setup from init_rootfs to init_ramfs
  ...

1 files changed, 12 insertions, 17 deletions

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 13a54953a27..107454312d5 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -752,7 +752,6 @@ struct vmap_block_queue {
 struct vmap_block {
 	spinlock_t lock;
 	struct vmap_area *va;
-	struct vmap_block_queue *vbq;
 	unsigned long free, dirty;
 	DECLARE_BITMAP(dirty_map, VMAP_BBMAP_BITS);
 	struct list_head free_list;
@@ -830,7 +829,6 @@ static struct vmap_block *new_vmap_block(gfp_t gfp_mask)
 	radix_tree_preload_end();
 
 	vbq = &get_cpu_var(vmap_block_queue);
-	vb->vbq = vbq;
 	spin_lock(&vbq->lock);
 	list_add_rcu(&vb->free_list, &vbq->free);
 	spin_unlock(&vbq->lock);
@@ -1018,15 +1016,16 @@ void vm_unmap_aliases(void)
 
 		rcu_read_lock();
 		list_for_each_entry_rcu(vb, &vbq->free, free_list) {
-			int i;
+			int i, j;
 
 			spin_lock(&vb->lock);
 			i = find_first_bit(vb->dirty_map, VMAP_BBMAP_BITS);
-			while (i < VMAP_BBMAP_BITS) {
+			if (i < VMAP_BBMAP_BITS) {
 				unsigned long s, e;
-				int j;
-				j = find_next_zero_bit(vb->dirty_map,
-					VMAP_BBMAP_BITS, i);
+
+				j = find_last_bit(vb->dirty_map,
+							VMAP_BBMAP_BITS);
+				j = j + 1; /* need exclusive index */
 
 				s = vb->va->va_start + (i << PAGE_SHIFT);
 				e = vb->va->va_start + (j << PAGE_SHIFT);
@@ -1036,10 +1035,6 @@ void vm_unmap_aliases(void)
 					start = s;
 				if (e > end)
 					end = e;
-
-				i = j;
-				i = find_next_bit(vb->dirty_map,
-							VMAP_BBMAP_BITS, i);
 			}
 			spin_unlock(&vb->lock);
 		}
@@ -1263,7 +1258,7 @@ void unmap_kernel_range(unsigned long addr, unsigned long size)
 int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
 {
 	unsigned long addr = (unsigned long)area->addr;
-	unsigned long end = addr + area->size - PAGE_SIZE;
+	unsigned long end = addr + get_vm_area_size(area);
 	int err;
 
 	err = vmap_page_range(addr, end, prot, *pages);
@@ -1558,7 +1553,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
 	unsigned int nr_pages, array_size, i;
 	gfp_t nested_gfp = (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO;
 
-	nr_pages = (area->size - PAGE_SIZE) >> PAGE_SHIFT;
+	nr_pages = get_vm_area_size(area) >> PAGE_SHIFT;
 	array_size = (nr_pages * sizeof(struct page *));
 
 	area->nr_pages = nr_pages;
@@ -1990,7 +1985,7 @@ long vread(char *buf, char *addr, unsigned long count)
 
 		vm = va->vm;
 		vaddr = (char *) vm->addr;
-		if (addr >= vaddr + vm->size - PAGE_SIZE)
+		if (addr >= vaddr + get_vm_area_size(vm))
 			continue;
 		while (addr < vaddr) {
 			if (count == 0)
@@ -2000,7 +1995,7 @@ long vread(char *buf, char *addr, unsigned long count)
 			addr++;
 			count--;
 		}
-		n = vaddr + vm->size - PAGE_SIZE - addr;
+		n = vaddr + get_vm_area_size(vm) - addr;
 		if (n > count)
 			n = count;
 		if (!(vm->flags & VM_IOREMAP))
@@ -2072,7 +2067,7 @@ long vwrite(char *buf, char *addr, unsigned long count)
 
 		vm = va->vm;
 		vaddr = (char *) vm->addr;
-		if (addr >= vaddr + vm->size - PAGE_SIZE)
+		if (addr >= vaddr + get_vm_area_size(vm))
 			continue;
 		while (addr < vaddr) {
 			if (count == 0)
@@ -2081,7 +2076,7 @@ long vwrite(char *buf, char *addr, unsigned long count)
 			addr++;
 			count--;
 		}
-		n = vaddr + vm->size - PAGE_SIZE - addr;
+		n = vaddr + get_vm_area_size(vm) - addr;
 		if (n > count)
 			n = count;
 		if (!(vm->flags & VM_IOREMAP)) {