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more work on metadata checksums

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This commit is contained in:
Bo Brantén
2020-03-01 01:37:56 +01:00
parent 8f41b9131d
commit b1a1fcf4e3
3 changed files with 5 additions and 12 deletions
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14
Ext4Fsd/ext3/generic.c
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@@ -1025,10 +1025,10 @@ Again:
Status = STATUS_INSUFFICIENT_RESOURCES;
goto errorout;
}
ext4_group_desc_csum_set(sb, Group, gd);
ext4_init_block_bitmap(sb, bh, Group, gd);
set_buffer_uptodate(bh);
gd->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
ext4_block_bitmap_csum_set(sb, Group, gd, bh);
Ext2SaveGroup(IrpContext, Vcb, Group);
} else {
bh = sb_getblk(sb, bitmap_blk);
@@ -1084,6 +1084,7 @@ Again:
/* no blocks found: set bg_free_blocks_count to 0 */
ext4_free_blks_set(sb, gd, 0);
ext4_block_bitmap_csum_set(sb, Group, gd, bh);
Ext2SaveGroup(IrpContext, Vcb, Group);
/* will try next group */
@@ -1550,7 +1551,6 @@ repeat:
set_buffer_uptodate(bh);
gd->bg_flags &= cpu_to_le16(~EXT4_BG_INODE_UNINIT);
ext4_inode_bitmap_csum_set(sb, Group, gd, bh, EXT4_INODES_PER_GROUP(sb) / 8);
ext4_group_desc_csum_set(sb, Group, gd);
Ext2SaveGroup(IrpContext, Vcb, Group);
} else {
bh = sb_getblk(sb, bitmap_blk);
@@ -1649,10 +1649,8 @@ repeat:
/* recheck and clear flag under lock if we still need to */
block_bitmap_bh = sb_getblk_zero(sb, ext4_block_bitmap(sb, gd));
if (block_bitmap_bh) {
ext4_block_bitmap_csum_set(sb, Group, gd,
block_bitmap_bh);
ext4_group_desc_csum_set(sb, Group, gd);
free = ext4_init_block_bitmap(sb, block_bitmap_bh, Group, gd);
ext4_block_bitmap_csum_set(sb, Group, gd, block_bitmap_bh);
set_buffer_uptodate(block_bitmap_bh);
brelse(block_bitmap_bh);
gd->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
@@ -1669,7 +1667,6 @@ repeat:
ext4_used_dirs_set(sb, gd, ext4_used_dirs_count(sb, gd) + 1);
}
ext4_inode_bitmap_csum_set(sb, Group, gd, bh, EXT4_INODES_PER_GROUP(sb) / 8);
ext4_group_desc_csum_set(sb, Group, gd);
Ext2SaveGroup(IrpContext, Vcb, Group);
Ext2UpdateVcbStat(IrpContext, Vcb);
Status = STATUS_SUCCESS;
@@ -1822,7 +1819,6 @@ Ext2FreeInode(
ext4_used_dirs_count(sb, gd) - 1);
}
ext4_inode_bitmap_csum_set(sb, Group, gd, bh, EXT4_INODES_PER_GROUP(sb) / 8);
ext4_group_desc_csum_set(sb, Group, gd);
Ext2SaveGroup(IrpContext, Vcb, Group);
Ext2UpdateVcbStat(IrpContext, Vcb);
Status = STATUS_SUCCESS;
@@ -3027,10 +3023,6 @@ int ext4_check_descriptors(struct super_block *sb)
if (!ext4_group_desc_csum_verify(sb, i, gdp)) {
printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: "
"Checksum for group %u failed.\n", i);
if (!IsVcbReadOnly(Vcb)) {
//__brelse(bh);
//return 0;
}
}
if (!flexbg_flag)

2
Ext4Fsd/ext4/ext4_csum.c
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@@ -250,7 +250,7 @@ static __le16 ext4_group_desc_csum(struct super_block *sb, __u32 block_group,
int ext4_group_desc_csum_verify(struct super_block *sb, __u32 block_group,
struct ext4_group_desc *gdp)
{
if (!ext4_has_feature_metadata_csum(sb))
if (!ext4_has_group_desc_csum(sb))
return 1;
return gdp->bg_checksum == ext4_group_desc_csum(sb, block_group, gdp);

1
Ext4Fsd/jbd/readme.txt Normal file
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@@ -0,0 +1 @@
This is a port of jbd from the Linux source code, it is unused because the driver is updated to use jbd2.