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Btrfs: mark delayed refs as for cow

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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>
This commit is contained in:
Arne Jansen
2011-09-12 15:26:38 +02:00
committed by Jan Schmidt
parent c7d22a3c3c
commit 66d7e7f09f
12 changed files with 155 additions and 114 deletions
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10
fs/btrfs/file.c
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@@ -678,7 +678,7 @@ next_slot:
disk_bytenr, num_bytes, 0,
root->root_key.objectid,
new_key.objectid,
start - extent_offset);
start - extent_offset, 0);
BUG_ON(ret);
*hint_byte = disk_bytenr;
}
@@ -753,7 +753,7 @@ next_slot:
disk_bytenr, num_bytes, 0,
root->root_key.objectid,
key.objectid, key.offset -
extent_offset);
extent_offset, 0);
BUG_ON(ret);
inode_sub_bytes(inode,
extent_end - key.offset);
@@ -962,7 +962,7 @@ again:
ret = btrfs_inc_extent_ref(trans, root, bytenr, num_bytes, 0,
root->root_key.objectid,
ino, orig_offset);
ino, orig_offset, 0);
BUG_ON(ret);
if (split == start) {
@@ -989,7 +989,7 @@ again:
del_nr++;
ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
0, root->root_key.objectid,
ino, orig_offset);
ino, orig_offset, 0);
BUG_ON(ret);
}
other_start = 0;
@@ -1006,7 +1006,7 @@ again:
del_nr++;
ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
0, root->root_key.objectid,
ino, orig_offset);
ino, orig_offset, 0);
BUG_ON(ret);
}
if (del_nr == 0) {