shithub: lwext4

Download patch

ref: 381472b60a9ff25f0e0cbf535af7d0b786810210
parent: 79fb06860bb52d73e6f69fbb2c79d05eaba37a5c
author: gkostka <kostka.grzegorz@gmail.com>
date: Mon Nov 16 17:28:06 EST 2015 

Introduce init_bgs in mkfs module


--- a/lwext4/ext4_mkfs.c
+++ b/lwext4/ext4_mkfs.c
@@ -310,6 +310,10 @@
 		ext4_bg_set_used_dirs_count(&aux_info->bg_desc[i], aux_info->sb,
 					    0);
 
+		ext4_bg_set_flag(&aux_info->bg_desc[i],
+				EXT4_BLOCK_GROUP_BLOCK_UNINIT |
+				EXT4_BLOCK_GROUP_INODE_UNINIT);
+
 		sb_free_blk += bg_free_blk;
 	}
 
@@ -328,10 +332,10 @@
 			aux_info->first_data_block + i * info->blocks_per_group;
 		uint32_t blk_off = 0;
 
+		blk_off += aux_info->bg_desc_blocks;
 		if (has_superblock(info, i)) {
 			bg_start_block++;
-			blk_off = info->bg_desc_reserve_blocks +
-				  aux_info->bg_desc_blocks;
+			blk_off += info->bg_desc_reserve_blocks;
 		}
 
 		uint32_t block_size = ext4_sb_get_block_size(aux_info->sb);
@@ -379,6 +383,7 @@
 			return r;
 	}
 
+
 	return r;
 }
 
@@ -463,6 +468,24 @@
 	return r;
 }
 
+static int init_bgs(struct ext4_fs *fs)
+{
+	int r = EOK;
+	struct ext4_block_group_ref ref;
+	uint32_t i;
+	uint32_t bg_count = ext4_block_group_cnt(&fs->sb);
+	for (i = 0; i < bg_count; ++i) {
+		r = ext4_fs_get_block_group_ref(fs, i, &ref);
+		if (r != EOK)
+			break;
+
+		r = ext4_fs_put_block_group_ref(&ref);
+		if (r != EOK)
+			break;
+	}
+	return r;
+}
+
 static int alloc_inodes(struct ext4_fs *fs)
 {
 	int r = EOK;
@@ -572,10 +595,12 @@
 
 	info->inodes_per_group = compute_inodes_per_group(info);
 
-	info->feat_compat = EXT2_SUPPORTED_FCOM;
-	info->feat_ro_compat = EXT2_SUPPORTED_FRO_COM;
-	info->feat_incompat = EXT2_SUPPORTED_FINCOM;
+	info->feat_compat = EXT3_SUPPORTED_FCOM;
+	info->feat_ro_compat = EXT3_SUPPORTED_FRO_COM;
+	info->feat_incompat = EXT3_SUPPORTED_FINCOM;
 
+	info->feat_incompat &= ~EXT4_FINCOM_META_BG;
+
 	if (info->no_journal == 0)
 		info->feat_compat |= 0;
 
@@ -630,6 +655,10 @@
 	r = ext4_fs_init(fs, bd);
 	if (r != EOK)
 		goto cache_fini;
+
+	r = init_bgs(fs);
+	if (r != EOK)
+		goto fs_fini;
 
 	r = alloc_inodes(fs);
 	if (r != EOK)