staging: lustre: llite: handle done flags differently in ll_dir_read

Invert the done flag test to reduce the code indentation.
If done is true release the page and break out of the
while loop.
Signed-off-by: wang di <di.wang@intel.com>
Reviewed-on: http://review.whamcloud.com/10761
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4906Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/llite/dir.c

@@ -562,7 +562,12 @@ int ll_dir_read(struct inode *inode, struct md_op_data *op_data,
 					 namelen, ino, type);
 		}
 
-		if (!done) {
+		if (done) {
+			pos = hash;
+			ll_release_page(page, 0);
+			break;
+		}
+
 		next = le64_to_cpu(dp->ldp_hash_end);
 		pos = next;
 		if (pos == MDS_DIR_END_OFF) {
@@ -590,10 +595,6 @@ int ll_dir_read(struct inode *inode, struct md_op_data *op_data,
 				LDF_COLLIDE);
 			ll_release_page(page, 1);
 		}
-		} else {
-			pos = hash;
-			ll_release_page(page, 0);
-		}
 	}
 
 	ctx->pos = pos;