binder: remove user_buffer_offset
Remove user_buffer_offset since there is no kernel
buffer pointer anymore.
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index d4cbe4b..0e7f0aa 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -138,17 +138,17 @@ static struct binder_buffer *binder_alloc_prepare_to_free_locked(
{
struct rb_node *n = alloc->allocated_buffers.rb_node;
struct binder_buffer *buffer;
- void *kern_ptr;
+ void *uptr;
- kern_ptr = (void *)(user_ptr - alloc->user_buffer_offset);
+ uptr = (void *)user_ptr;
while (n) {
buffer = rb_entry(n, struct binder_buffer, rb_node);
BUG_ON(buffer->free);
- if (kern_ptr < buffer->data)
+ if (uptr < buffer->data)
n = n->rb_left;
- else if (kern_ptr > buffer->data)
+ else if (uptr > buffer->data)
n = n->rb_right;
else {
/*
@@ -265,8 +265,7 @@ static int binder_update_page_range(struct binder_alloc *alloc, int allocate,
page->alloc = alloc;
INIT_LIST_HEAD(&page->lru);
- user_page_addr =
- (uintptr_t)page_addr + alloc->user_buffer_offset;
+ user_page_addr = (uintptr_t)page_addr;
ret = vm_insert_page(vma, user_page_addr, page[0].page_ptr);
if (ret) {
pr_err("%d: binder_alloc_buf failed to map page at %lx in userspace\n",
@@ -694,7 +693,6 @@ int binder_alloc_mmap_handler(struct binder_alloc *alloc,
}
alloc->buffer = (void *)vma->vm_start;
- alloc->user_buffer_offset = 0;
mutex_unlock(&binder_alloc_mmap_lock);
alloc->pages = kcalloc((vma->vm_end - vma->vm_start) / PAGE_SIZE,
@@ -941,9 +939,7 @@ enum lru_status binder_alloc_free_page(struct list_head *item,
if (vma) {
trace_binder_unmap_user_start(alloc, index);
- zap_page_range(vma,
- page_addr + alloc->user_buffer_offset,
- PAGE_SIZE);
+ zap_page_range(vma, page_addr, PAGE_SIZE);
trace_binder_unmap_user_end(alloc, index);
