When last inode from bg is freed, set the INODE_UNINIT flag, similarly
when last block is freed, set BLOCK_UNINIT flag. This can speed up
subsequent fsck run.

Signed-off-by: Tomas Racek <redacted>
---
 fs/ext4/ialloc.c  | 4 ++++
 fs/ext4/mballoc.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 4facdd2..6e4b982 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c

@@ -289,6 +289,10 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)

        count = ext4_free_inodes_count(sb, gdp) + 1;
        ext4_free_inodes_set(sb, gdp, count);
+
+       if (count == EXT4_INODES_PER_GROUP(sb))
+               gdp->bg_flags |= cpu_to_le16(EXT4_BG_INODE_UNINIT);
+
        if (is_directory) {
                count = ext4_used_dirs_count(sb, gdp) - 1;
                ext4_used_dirs_set(sb, gdp, count);

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 526e553..28bce35 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c

@@ -4665,6 +4665,10 @@ do_more:

        ret = ext4_free_group_clusters(sb, gdp) + count_clusters;
        ext4_free_group_clusters_set(sb, gdp, ret);
+
+       if(ret == EXT4_BLOCKS_PER_GROUP(sb))
+               gdp->bg_flags |= cpu_to_le16(EXT4_BG_BLOCK_UNINIT);
+
        ext4_block_bitmap_csum_set(sb, block_group, gdp, bitmap_bh);
        ext4_group_desc_csum_set(sb, block_group, gdp);
        ext4_unlock_group(sb, block_group);
--

1.7.11.7

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