1 files changed, 25 insertions, 15 deletions

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index f815ca0..c7d0d6a 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -618,26 +618,34 @@ bool f2fs_empty_dir(struct inode *dir)
 	return true;
 }
 
-static int f2fs_readdir(struct file *file, struct dir_context *ctx)
+static int f2fs_readdir(struct file *file, void *dirent, filldir_t filldir)
 {
+	unsigned long pos = file->f_pos;
+	unsigned char *types = NULL;
+	unsigned int bit_pos = 0, start_bit_pos = 0;
+	int over = 0;
 	struct inode *inode = file_inode(file);
 	unsigned long npages = dir_blocks(inode);
-	unsigned int bit_pos = 0;
 	struct f2fs_dentry_block *dentry_blk = NULL;
 	struct f2fs_dir_entry *de = NULL;
 	struct page *dentry_page = NULL;
-	unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK);
+	unsigned int n = 0;
 	unsigned char d_type = DT_UNKNOWN;
+	int slots;
 
-	bit_pos = ((unsigned long)ctx->pos % NR_DENTRY_IN_BLOCK);
+	types = f2fs_filetype_table;
+	bit_pos = (pos % NR_DENTRY_IN_BLOCK);
+	n = (pos / NR_DENTRY_IN_BLOCK);
 
 	for ( ; n < npages; n++) {
 		dentry_page = get_lock_data_page(inode, n);
 		if (IS_ERR(dentry_page))
 			continue;
 
+		start_bit_pos = bit_pos;
 		dentry_blk = kmap(dentry_page);
 		while (bit_pos < NR_DENTRY_IN_BLOCK) {
+			d_type = DT_UNKNOWN;
 			bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap,
 							NR_DENTRY_IN_BLOCK,
 							bit_pos);
@@ -645,21 +653,23 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
 				break;
 
 			de = &dentry_blk->dentry[bit_pos];
-			if (de->file_type < F2FS_FT_MAX)
-				d_type = f2fs_filetype_table[de->file_type];
-			else
-				d_type = DT_UNKNOWN;
-			if (!dir_emit(ctx,
+			if (types && de->file_type < F2FS_FT_MAX)
+				d_type = types[de->file_type];
+
+			over = filldir(dirent,
 					dentry_blk->filename[bit_pos],
 					le16_to_cpu(de->name_len),
-					le32_to_cpu(de->ino), d_type))
+					(n * NR_DENTRY_IN_BLOCK) + bit_pos,
+					le32_to_cpu(de->ino), d_type);
+			if (over) {
+				file->f_pos += bit_pos - start_bit_pos;
 				goto stop;
-
-			bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
-			ctx->pos = n * NR_DENTRY_IN_BLOCK + bit_pos;
+			}
+			slots = GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
+			bit_pos += slots;
 		}
 		bit_pos = 0;
-		ctx->pos = (n + 1) * NR_DENTRY_IN_BLOCK;
+		file->f_pos = (n + 1) * NR_DENTRY_IN_BLOCK;
 		kunmap(dentry_page);
 		f2fs_put_page(dentry_page, 1);
 		dentry_page = NULL;
@@ -676,7 +686,7 @@ stop:
 const struct file_operations f2fs_dir_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
-	.iterate	= f2fs_readdir,
+	.readdir	= f2fs_readdir,
 	.fsync		= f2fs_sync_file,
 	.unlocked_ioctl	= f2fs_ioctl,
 };