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btrfs_truncate

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-03-27 11:05:53 -04:00
committed by David Woodhouse
parent 71951f35a6
commit f4b9aa8d3b
2 changed files with 114 additions and 18 deletions
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25
fs/btrfs/extent-tree.c
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@@ -171,20 +171,21 @@ static int pin_down_block(struct btrfs_root *root, u64 blocknr, int pending)
struct btrfs_header *header;
struct buffer_head *bh;
bh = sb_find_get_block(root->fs_info->sb, blocknr);
if (bh) {
header = btrfs_buffer_header(bh);
if (btrfs_header_generation(header) ==
root->fs_info->running_transaction->transid) {
if (!pending) {
bh = sb_find_get_block(root->fs_info->sb, blocknr);
if (bh) {
header = btrfs_buffer_header(bh);
if (btrfs_header_generation(header) ==
root->fs_info->running_transaction->transid) {
brelse(bh);
return 0;
}
brelse(bh);
return 0;
}
brelse(bh);
}
if (pending)
err = set_radix_bit(&root->fs_info->pending_del_radix, blocknr);
else
err = set_radix_bit(&root->fs_info->pinned_radix, blocknr);
} else {
err = set_radix_bit(&root->fs_info->pending_del_radix, blocknr);
}
BUG_ON(err);
return 0;
}
@@ -223,6 +224,7 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
BUG_ON(ei->refs == 0);
refs = btrfs_extent_refs(ei) - 1;
btrfs_set_extent_refs(ei, refs);
mark_buffer_dirty(path.nodes[0]);
if (refs == 0) {
u64 super_blocks_used;
@@ -240,7 +242,6 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
if (ret)
BUG();
}
mark_buffer_dirty(path.nodes[0]);
btrfs_release_path(extent_root, &path);
finish_current_insert(trans, extent_root);
return ret;