diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 5 | ||||
| -rw-r--r-- | mm/mmap.c | 16 | ||||
| -rw-r--r-- | mm/truncate.c | 4 | ||||
| -rw-r--r-- | mm/vmscan.c | 7 |
4 files changed, 28 insertions, 4 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index ea89840fc65f..6b9aee20f242 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -143,13 +143,18 @@ void __remove_from_page_cache(struct page *page) void remove_from_page_cache(struct page *page) { struct address_space *mapping = page->mapping; + void (*freepage)(struct page *); BUG_ON(!PageLocked(page)); + freepage = mapping->a_ops->freepage; spin_lock_irq(&mapping->tree_lock); __remove_from_page_cache(page); spin_unlock_irq(&mapping->tree_lock); mem_cgroup_uncharge_cache_page(page); + + if (freepage) + freepage(page); } EXPORT_SYMBOL(remove_from_page_cache); diff --git a/mm/mmap.c b/mm/mmap.c index b179abb1474a..50a4aa0255a0 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2462,6 +2462,7 @@ int install_special_mapping(struct mm_struct *mm, unsigned long addr, unsigned long len, unsigned long vm_flags, struct page **pages) { + int ret; struct vm_area_struct *vma; vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); @@ -2479,16 +2480,23 @@ int install_special_mapping(struct mm_struct *mm, vma->vm_ops = &special_mapping_vmops; vma->vm_private_data = pages; - if (unlikely(insert_vm_struct(mm, vma))) { - kmem_cache_free(vm_area_cachep, vma); - return -ENOMEM; - } + ret = security_file_mmap(NULL, 0, 0, 0, vma->vm_start, 1); + if (ret) + goto out; + + ret = insert_vm_struct(mm, vma); + if (ret) + goto out; mm->total_vm += len >> PAGE_SHIFT; perf_event_mmap(vma); return 0; + +out: + kmem_cache_free(vm_area_cachep, vma); + return ret; } static DEFINE_MUTEX(mm_all_locks_mutex); diff --git a/mm/truncate.c b/mm/truncate.c index ba887bff48c5..3c2d5ddfa0d4 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -390,6 +390,10 @@ invalidate_complete_page2(struct address_space *mapping, struct page *page) __remove_from_page_cache(page); spin_unlock_irq(&mapping->tree_lock); mem_cgroup_uncharge_cache_page(page); + + if (mapping->a_ops->freepage) + mapping->a_ops->freepage(page); + page_cache_release(page); /* pagecache ref */ return 1; failed: diff --git a/mm/vmscan.c b/mm/vmscan.c index d31d7ce52c0e..9ca587c69274 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -494,9 +494,16 @@ static int __remove_mapping(struct address_space *mapping, struct page *page) spin_unlock_irq(&mapping->tree_lock); swapcache_free(swap, page); } else { + void (*freepage)(struct page *); + + freepage = mapping->a_ops->freepage; + __remove_from_page_cache(page); spin_unlock_irq(&mapping->tree_lock); mem_cgroup_uncharge_cache_page(page); + + if (freepage != NULL) + freepage(page); } return 1; |
