diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ntfs3/file.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index f421a36b1ed63..2d1de3739ffea 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -323,18 +323,44 @@ static int ntfs_extend_initialized_size(struct file *file, return 0; } +/* Zero pagecache after 'from'. */ +static void ntfs_zero_tail(struct address_space *mapping, loff_t from) +{ + struct folio_batch fbatch; + pgoff_t index = from >> PAGE_SHIFT; + unsigned nr, i; + + folio_batch_init(&fbatch); + + nr = filemap_get_folios(mapping, &index, -1, &fbatch); + + for (i = 0; i < nr; i++) { + struct folio *folio = fbatch.folios[i]; + u32 st = folio_pos(folio) < from ? + offset_in_folio(folio, from) : + 0; + + folio_lock(folio); + folio_zero_segment(folio, st, folio_size(folio)); + + folio_unlock(folio); + } + folio_batch_release(&fbatch); +} + static void ntfs_filemap_close(struct vm_area_struct *vma) { struct inode *inode = file_inode(vma->vm_file); struct ntfs_inode *ni = ntfs_i(inode); + u64 i_size = i_size_read(inode); u64 from = (u64)vma->vm_pgoff << PAGE_SHIFT; - u64 to = min_t(u64, i_size_read(inode), - from + vma->vm_end - vma->vm_start); + u64 to = min(i_size, from + vma->vm_end - vma->vm_start); if (ni->i_valid < to) { ni->i_valid = to; mark_inode_dirty(inode); } + ntfs_zero_tail(inode->i_mapping, ni->i_valid); } /* Copy of generic_file_vm_ops. */ |