--- zzzz-none-000/linux-3.10.107/fs/ufs/dir.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/ufs/dir.c	2021-02-04 17:41:59.000000000 +0000
@@ -65,11 +65,6 @@
 	page_cache_release(page);
 }
 
-static inline unsigned long ufs_dir_pages(struct inode *inode)
-{
-	return (inode->i_size+PAGE_CACHE_SIZE-1)>>PAGE_CACHE_SHIFT;
-}
-
 ino_t ufs_inode_by_name(struct inode *dir, const struct qstr *qstr)
 {
 	ino_t res = 0;
@@ -87,7 +82,8 @@
 
 /* Releases the page */
 void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
-		  struct page *page, struct inode *inode)
+		  struct page *page, struct inode *inode,
+		  bool update_times)
 {
 	loff_t pos = page_offset(page) +
 			(char *) de - (char *) page_address(page);
@@ -103,7 +99,8 @@
 
 	err = ufs_commit_chunk(page, pos, len);
 	ufs_put_page(page);
-	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
+	if (update_times)
+		dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(dir);
 }
 
@@ -256,7 +253,7 @@
 	int namelen = qstr->len;
 	unsigned reclen = UFS_DIR_REC_LEN(namelen);
 	unsigned long start, n;
-	unsigned long npages = ufs_dir_pages(dir);
+	unsigned long npages = dir_pages(dir);
 	struct page *page = NULL;
 	struct ufs_inode_info *ui = UFS_I(dir);
 	struct ufs_dir_entry *de;
@@ -311,7 +308,7 @@
  */
 int ufs_add_link(struct dentry *dentry, struct inode *inode)
 {
-	struct inode *dir = dentry->d_parent->d_inode;
+	struct inode *dir = d_inode(dentry->d_parent);
 	const unsigned char *name = dentry->d_name.name;
 	int namelen = dentry->d_name.len;
 	struct super_block *sb = dir->i_sb;
@@ -320,7 +317,7 @@
 	unsigned short rec_len, name_len;
 	struct page *page = NULL;
 	struct ufs_dir_entry *de;
-	unsigned long npages = ufs_dir_pages(dir);
+	unsigned long npages = dir_pages(dir);
 	unsigned long n;
 	char *kaddr;
 	loff_t pos;
@@ -430,16 +427,16 @@
  * This is blatantly stolen from ext2fs
  */
 static int
-ufs_readdir(struct file *filp, void *dirent, filldir_t filldir)
+ufs_readdir(struct file *file, struct dir_context *ctx)
 {
-	loff_t pos = filp->f_pos;
-	struct inode *inode = file_inode(filp);
+	loff_t pos = ctx->pos;
+	struct inode *inode = file_inode(file);
 	struct super_block *sb = inode->i_sb;
 	unsigned int offset = pos & ~PAGE_CACHE_MASK;
 	unsigned long n = pos >> PAGE_CACHE_SHIFT;
-	unsigned long npages = ufs_dir_pages(inode);
+	unsigned long npages = dir_pages(inode);
 	unsigned chunk_mask = ~(UFS_SB(sb)->s_uspi->s_dirblksize - 1);
-	int need_revalidate = filp->f_version != inode->i_version;
+	int need_revalidate = file->f_version != inode->i_version;
 	unsigned flags = UFS_SB(sb)->s_flags;
 
 	UFSD("BEGIN\n");
@@ -457,16 +454,16 @@
 			ufs_error(sb, __func__,
 				  "bad page in #%lu",
 				  inode->i_ino);
-			filp->f_pos += PAGE_CACHE_SIZE - offset;
+			ctx->pos += PAGE_CACHE_SIZE - offset;
 			return -EIO;
 		}
 		kaddr = page_address(page);
 		if (unlikely(need_revalidate)) {
 			if (offset) {
 				offset = ufs_validate_entry(sb, kaddr, offset, chunk_mask);
-				filp->f_pos = (n<<PAGE_CACHE_SHIFT) + offset;
+				ctx->pos = (n<<PAGE_CACHE_SHIFT) + offset;
 			}
-			filp->f_version = inode->i_version;
+			file->f_version = inode->i_version;
 			need_revalidate = 0;
 		}
 		de = (struct ufs_dir_entry *)(kaddr+offset);
@@ -479,11 +476,8 @@
 				return -EIO;
 			}
 			if (de->d_ino) {
-				int over;
 				unsigned char d_type = DT_UNKNOWN;
 
-				offset = (char *)de - kaddr;
-
 				UFSD("filldir(%s,%u)\n", de->d_name,
 				      fs32_to_cpu(sb, de->d_ino));
 				UFSD("namlen %u\n", ufs_get_de_namlen(sb, de));
@@ -491,16 +485,15 @@
 				if ((flags & UFS_DE_MASK) == UFS_DE_44BSD)
 					d_type = de->d_u.d_44.d_type;
 
-				over = filldir(dirent, de->d_name,
+				if (!dir_emit(ctx, de->d_name,
 					       ufs_get_de_namlen(sb, de),
-						(n<<PAGE_CACHE_SHIFT) | offset,
-					       fs32_to_cpu(sb, de->d_ino), d_type);
-				if (over) {
+					       fs32_to_cpu(sb, de->d_ino),
+					       d_type)) {
 					ufs_put_page(page);
 					return 0;
 				}
 			}
-			filp->f_pos += fs16_to_cpu(sb, de->d_reclen);
+			ctx->pos += fs16_to_cpu(sb, de->d_reclen);
 		}
 		ufs_put_page(page);
 	}
@@ -612,7 +605,7 @@
 {
 	struct super_block *sb = inode->i_sb;
 	struct page *page = NULL;
-	unsigned long i, npages = ufs_dir_pages(inode);
+	unsigned long i, npages = dir_pages(inode);
 
 	for (i = 0; i < npages; i++) {
 		char *kaddr;
@@ -660,7 +653,7 @@
 
 const struct file_operations ufs_dir_operations = {
 	.read		= generic_read_dir,
-	.readdir	= ufs_readdir,
+	.iterate	= ufs_readdir,
 	.fsync		= generic_file_fsync,
 	.llseek		= generic_file_llseek,
 };