ext4: fix block validity checks so they work correctly with meta_bg

The block validity checks used by ext4_data_block_valid() wasn't
correctly written to check file systems with the meta_bg feature.  Fix
this.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org

diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index 50784ef..dc79b75 100644 (file)
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -160,7 +160,7 @@ int ext4_setup_system_zone(struct super_block *sb)
                if (ext4_bg_has_super(sb, i) &&
                    ((i < 5) || ((i % flex_size) == 0)))
                        add_system_zone(sbi, ext4_group_first_block_no(sb, i),
-                                       sbi->s_gdb_count + 1);
+                                       ext4_bg_num_gdb(sb, i) + 1);
                gdp = ext4_get_group_desc(sb, i, NULL);
                ret = add_system_zone(sbi, ext4_block_bitmap(sb, gdp), 1);
                if (ret)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9c09748..0c0ddc1 100644 (file)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4884,10 +4884,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
 
        ret = 0;
        if (ei->i_file_acl &&
-           ((ei->i_file_acl <
-             (le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block) +
-              EXT4_SB(sb)->s_gdb_count)) ||
-            (ei->i_file_acl >= ext4_blocks_count(EXT4_SB(sb)->s_es)))) {
+           !ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) {
                ext4_error(sb, __func__,
                           "bad extended attribute block %llu in inode #%lu",
                           ei->i_file_acl, inode->i_ino);