diff options
Diffstat (limited to 'mm/filemap_xip.c')
| -rw-r--r-- | mm/filemap_xip.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c index a4eb3113222..d8d9fe3f685 100644 --- a/mm/filemap_xip.c +++ b/mm/filemap_xip.c @@ -26,7 +26,7 @@ * of ZERO_PAGE(), such as /dev/zero */ static DEFINE_MUTEX(xip_sparse_mutex); -static seqcount_t xip_sparse_seq = SEQCNT_ZERO; +static seqcount_t xip_sparse_seq = SEQCNT_ZERO(xip_sparse_seq); static struct page *__xip_sparse_page; /* called under xip_sparse_mutex */ @@ -167,7 +167,6 @@ __xip_unmap (struct address_space * mapping, { struct vm_area_struct *vma; struct mm_struct *mm; - struct prio_tree_iter iter; unsigned long address; pte_t *pte; pte_t pteval; @@ -184,7 +183,7 @@ __xip_unmap (struct address_space * mapping, retry: mutex_lock(&mapping->i_mmap_mutex); - vma_prio_tree_foreach(vma, &iter, &mapping->i_mmap, pgoff, pgoff) { + vma_interval_tree_foreach(vma, &mapping->i_mmap, pgoff, pgoff) { mm = vma->vm_mm; address = vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT); @@ -193,11 +192,13 @@ retry: if (pte) { /* Nuke the page table entry. */ flush_cache_page(vma, address, pte_pfn(*pte)); - pteval = ptep_clear_flush_notify(vma, address, pte); + pteval = ptep_clear_flush(vma, address, pte); page_remove_rmap(page); dec_mm_counter(mm, MM_FILEPAGES); BUG_ON(pte_dirty(pteval)); pte_unmap_unlock(pte, ptl); + /* must invalidate_page _before_ freeing the page */ + mmu_notifier_invalidate_page(mm, address); page_cache_release(page); } } @@ -304,6 +305,8 @@ out: static const struct vm_operations_struct xip_file_vm_ops = { .fault = xip_file_fault, + .page_mkwrite = filemap_page_mkwrite, + .remap_pages = generic_file_remap_pages, }; int xip_file_mmap(struct file * file, struct vm_area_struct * vma) @@ -312,7 +315,7 @@ int xip_file_mmap(struct file * file, struct vm_area_struct * vma) file_accessed(file); vma->vm_ops = &xip_file_vm_ops; - vma->vm_flags |= VM_CAN_NONLINEAR | VM_MIXEDMAP; + vma->vm_flags |= VM_MIXEDMAP; return 0; } EXPORT_SYMBOL_GPL(xip_file_mmap); @@ -411,8 +414,6 @@ xip_file_write(struct file *filp, const char __user *buf, size_t len, pos = *ppos; count = len; - vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE); - /* We can write back this queue in page reclaim */ current->backing_dev_info = mapping->backing_dev_info; @@ -426,7 +427,9 @@ xip_file_write(struct file *filp, const char __user *buf, size_t len, if (ret) goto out_backing; - file_update_time(filp); + ret = file_update_time(filp); + if (ret) + goto out_backing; ret = __xip_file_write (filp, buf, count, pos, ppos); |