addr = ALIGN(first->va_end, align);
if (addr < vstart)
goto nocache;
- if (addr + size - 1 < addr)
+ if (addr + size < addr)
goto overflow;
} else {
addr = ALIGN(vstart, align);
- if (addr + size - 1 < addr)
+ if (addr + size < addr)
goto overflow;
n = vmap_area_root.rb_node;
if (addr + cached_hole_size < first->va_start)
cached_hole_size = first->va_start - addr;
addr = ALIGN(first->va_end, align);
- if (addr + size - 1 < addr)
+ if (addr + size < addr)
goto overflow;
+ /*
if (list_is_last(&first->list, &vmap_area_list))
goto found;
first = list_entry(first->list.next,
struct vmap_area, list);
+ */
+ n = rb_next(&first->rb_node);
+ if (n)
+ first = rb_entry(n, struct vmap_area, rb_node);
+ else
+ goto found;
}
found:
int i;
spin_lock(&vb->lock);
- if (vb->free < 1UL << order)
+ if (vb->free < 1UL << order) {
+ if (vb->free + vb->dirty == VMAP_BBMAP_BITS && vb->dirty != VMAP_BBMAP_BITS) {
+ /* free left too small, handle as fragmented scenario */
+ purge = 1;
+ }
goto next;
+ }
i = bitmap_find_free_region(vb->alloc_map,
VMAP_BBMAP_BITS, order);