Make tune2fs uninit block group aware

Signed-off-by: Jose R. Santos <jrs@us.ibm.com>
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/misc/tune2fs.8.in b/misc/tune2fs.8.in
index 8b59c17..b5af4d0 100644 (file)
--- a/misc/tune2fs.8.in
+++ b/misc/tune2fs.8.in
@@ -439,10 +439,17 @@ Reserve space so the block group descriptor table may grow in the
 future.
 .B Tune2fs 
 only supports clearing this filesystem feature.
+.TP
+.B uninit_groups
+Allow the kernel to initialize bitmaps and inode tables and keep a high
+watermark for the unused inodes in a filesystem, to reduce
+.BR e2fsck (8)
+time.
 .RE
 .IP
 After setting or clearing 
 .BR sparse_super ,
+.BR uninit_groups ,
 .BR filetype ,
 or
 .B resize_inode

diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 5a20d2f..8f5d564 100644 (file)
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -118,6 +118,7 @@ static __u32 ok_features[3] = {
                EXT4_FEATURE_INCOMPAT_FLEX_BG,
        /* R/O compat */
        EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
+               EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
                EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 };
 
@@ -130,7 +131,8 @@ static __u32 clear_ok_features[3] = {
        EXT2_FEATURE_INCOMPAT_FILETYPE |
                EXT4_FEATURE_INCOMPAT_FLEX_BG,
        /* R/O compat */
-       EXT2_FEATURE_RO_COMPAT_LARGE_FILE
+       EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
+               EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 };
 
 /*
@@ -245,6 +247,7 @@ static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
        ext2fs_unmark_block_bitmap(fs->block_map,block);
        group = ext2fs_group_of_blk(fs, block);
        fs->group_desc[group].bg_free_blocks_count++;
+       ext2fs_group_desc_csum_set(fs, group);
        fs->super->s_free_blocks_count++;
        return 0;
 }
@@ -409,6 +412,8 @@ static void update_feature_set(ext2_filsys fs, char *features)
 
        if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
                            EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
+           FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
+                           EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
            FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
                            EXT2_FEATURE_INCOMPAT_FILETYPE) ||
            FEATURE_CHANGED(E2P_FEATURE_COMPAT,