diff options
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 30f826d484f..f3f6e075856 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -77,7 +77,6 @@ static void vunmap_page_range(unsigned long addr, unsigned long end) BUG_ON(addr >= end); pgd = pgd_offset_k(addr); - flush_cache_vunmap(addr, end); do { next = pgd_addr_end(addr, end); if (pgd_none_or_clear_bad(pgd)) @@ -543,9 +542,10 @@ static void purge_vmap_area_lazy(void) } /* - * Free and unmap a vmap area + * Free and unmap a vmap area, caller ensuring flush_cache_vunmap had been + * called for the correct range previously. */ -static void free_unmap_vmap_area(struct vmap_area *va) +static void free_unmap_vmap_area_noflush(struct vmap_area *va) { va->flags |= VM_LAZY_FREE; atomic_add((va->va_end - va->va_start) >> PAGE_SHIFT, &vmap_lazy_nr); @@ -553,6 +553,15 @@ static void free_unmap_vmap_area(struct vmap_area *va) try_purge_vmap_area_lazy(); } +/* + * Free and unmap a vmap area + */ +static void free_unmap_vmap_area(struct vmap_area *va) +{ + flush_cache_vunmap(va->va_start, va->va_end); + free_unmap_vmap_area_noflush(va); +} + static struct vmap_area *find_vmap_area(unsigned long addr) { struct vmap_area *va; @@ -734,7 +743,7 @@ static void free_vmap_block(struct vmap_block *vb) spin_unlock(&vmap_block_tree_lock); BUG_ON(tmp != vb); - free_unmap_vmap_area(vb->va); + free_unmap_vmap_area_noflush(vb->va); call_rcu(&vb->rcu_head, rcu_free_vb); } @@ -796,6 +805,9 @@ static void vb_free(const void *addr, unsigned long size) BUG_ON(size & ~PAGE_MASK); BUG_ON(size > PAGE_SIZE*VMAP_MAX_ALLOC); + + flush_cache_vunmap((unsigned long)addr, (unsigned long)addr + size); + order = get_order(size); offset = (unsigned long)addr & (VMAP_BLOCK_SIZE - 1); |