Btrfs: mark delayed refs as for cow
Add a for_cow parameter to add_delayed_*_ref and pass the appropriate value
from every call site. The for_cow parameter will later on be used to
determine if a ref will change anything with respect to qgroups.
Delayed refs coming from relocation are always counted as for_cow, as they
don't change subvol quota.
Also pass in the fs_info for later use.
btrfs_find_all_roots() will use this as an optimization, as changes that are
for_cow will not change anything with respect to which root points to a
certain leaf. Thus, we don't need to add the current sequence number to
those delayed refs.
Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index dff29d5..8c1aae2 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1604,12 +1604,12 @@
ret = btrfs_inc_extent_ref(trans, root, new_bytenr,
num_bytes, parent,
btrfs_header_owner(leaf),
- key.objectid, key.offset);
+ key.objectid, key.offset, 1);
BUG_ON(ret);
ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
parent, btrfs_header_owner(leaf),
- key.objectid, key.offset);
+ key.objectid, key.offset, 1);
BUG_ON(ret);
}
if (dirty)
@@ -1778,21 +1778,23 @@
ret = btrfs_inc_extent_ref(trans, src, old_bytenr, blocksize,
path->nodes[level]->start,
- src->root_key.objectid, level - 1, 0);
+ src->root_key.objectid, level - 1, 0,
+ 1);
BUG_ON(ret);
ret = btrfs_inc_extent_ref(trans, dest, new_bytenr, blocksize,
0, dest->root_key.objectid, level - 1,
- 0);
+ 0, 1);
BUG_ON(ret);
ret = btrfs_free_extent(trans, src, new_bytenr, blocksize,
path->nodes[level]->start,
- src->root_key.objectid, level - 1, 0);
+ src->root_key.objectid, level - 1, 0,
+ 1);
BUG_ON(ret);
ret = btrfs_free_extent(trans, dest, old_bytenr, blocksize,
0, dest->root_key.objectid, level - 1,
- 0);
+ 0, 1);
BUG_ON(ret);
btrfs_unlock_up_safe(path, 0);
@@ -2244,7 +2246,7 @@
} else {
list_del_init(&reloc_root->root_list);
}
- btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0);
+ btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0, 1);
}
if (found) {
@@ -2558,7 +2560,7 @@
node->eb->start, blocksize,
upper->eb->start,
btrfs_header_owner(upper->eb),
- node->level, 0);
+ node->level, 0, 1);
BUG_ON(ret);
ret = btrfs_drop_subtree(trans, root, eb, upper->eb);