[68/90] ext4: fix block validity checks so they work correctly with meta_bg

Greg KH
2009-12-11T04:39:15Z

[-- Attachment #1: 0068-ext4-fix-block-validity-checks-so-they-work-correctl.patch --]
[-- Type: text/plain, Size: 1511 bytes --]

2.6.31-stable review patch. If anyone has any objections, please let us know.

------------------
(cherry picked from commit 1032988c71f3f85483b2b4319684d1205a704c02)

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
fs/ext4/block_validity.c | 2 +-
fs/ext4/inode.c | 5 +----
2 files changed, 2 insertions(+), 5 deletions(-)

--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -160,7 +160,7 @@ int ext4_setup_system_zone(struct super_
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)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4873,10 +4873,7 @@ struct inode *ext4_iget(struct super_blo

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);