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Commit c62a11fd authored Sep 08, 2008 by Frederic Bohe Committed by Theodore Ts'o Sep 08, 2008

Update flex_bg free blocks and free inodes counters when resizing.



This fixes a bug which prevented the newly created inodes after a
resize from being used on filesystems with flex_bg.

Signed-off-by: Frederic Bohe <frederic.bohe@bull.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

parent 9d9f1775

fs/ext4/resize.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -929,6 +929,15 @@ int ext4_group_add(struct super_block sb, struct ext4_new_group_data input)
		percpu_counter_add(&sbi->s_freeinodes_counter,
		EXT4_INODES_PER_GROUP(sb));

		if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
		ext4_group_t flex_group;
		flex_group = ext4_flex_group(sbi, input->group);
		sbi->s_flex_groups[flex_group].free_blocks +=
		input->free_blocks_count;
		sbi->s_flex_groups[flex_group].free_inodes +=
		EXT4_INODES_PER_GROUP(sb);
		}

		ext4_journal_dirty_metadata(handle, sbi->s_sbh);
		sb->s_dirt = 1;

fs/ext4/super.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -1507,7 +1507,10 @@ static int ext4_fill_flex_info(struct super_block *sb)
		sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
		groups_per_flex = 1 << sbi->s_log_groups_per_flex;

		flex_group_count = (sbi->s_groups_count + groups_per_flex - 1) /
		/* We allocate both existing and potentially added groups */
		flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
		((sbi->s_es->s_reserved_gdt_blocks +1 ) <<
		EXT4_DESC_PER_BLOCK_BITS(sb))) /
		groups_per_flex;
		sbi->s_flex_groups = kzalloc(flex_group_count *
		sizeof(struct flex_groups), GFP_KERNEL);