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Btrfs: crash recovery fixes

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-06-28 15:57:36 -04:00 • committed by David Woodhouse
parent f2654de42a
commit ccd467d60e
8 changed files with 112 additions and 48 deletions
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22
fs/btrfs/disk-io.c
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@ -270,14 +270,6 @@ fail:
return NULL;
}
int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct buffer_head *buf)
{
WARN_ON(atomic_read(&buf->b_count) == 0);
mark_buffer_dirty(buf);
return 0;
}
int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct buffer_head *buf)
{
@ -621,6 +613,20 @@ int close_ctree(struct btrfs_root *root)
return 0;
}
void btrfs_mark_buffer_dirty(struct buffer_head *bh)
{
struct btrfs_root *root = BTRFS_I(bh->b_page->mapping->host)->root;
u64 transid = btrfs_header_generation(btrfs_buffer_header(bh));
WARN_ON(!atomic_read(&bh->b_count));
if (transid != root->fs_info->generation) {
printk(KERN_CRIT "transid mismatch buffer %llu, found %Lu running %Lu\n",
(unsigned long long)bh->b_blocknr,
transid, root->fs_info->generation);
WARN_ON(1);
}
mark_buffer_dirty(bh);
}
void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf)
{
brelse(buf);