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-rw-r--r--fs/btrfs/ctree.c31
-rw-r--r--fs/btrfs/ctree.h4
-rw-r--r--fs/btrfs/extent-tree.c31
-rw-r--r--fs/btrfs/ioctl.c2
-rw-r--r--fs/btrfs/transaction.c6
5 files changed, 47 insertions, 27 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 9d4ba3470c17..c4bc570a396e 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -456,9 +456,8 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
extent_buffer_get(cow);
spin_unlock(&root->node_lock);
- btrfs_free_extent(trans, root, buf->start, buf->len,
- parent_start, root->root_key.objectid,
- level, 0);
+ btrfs_free_tree_block(trans, root, buf->start, buf->len,
+ parent_start, root->root_key.objectid, level);
free_extent_buffer(buf);
add_root_to_dirty_list(root);
} else {
@@ -473,9 +472,8 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
btrfs_set_node_ptr_generation(parent, parent_slot,
trans->transid);
btrfs_mark_buffer_dirty(parent);
- btrfs_free_extent(trans, root, buf->start, buf->len,
- parent_start, root->root_key.objectid,
- level, 0);
+ btrfs_free_tree_block(trans, root, buf->start, buf->len,
+ parent_start, root->root_key.objectid, level);
}
if (unlock_orig)
btrfs_tree_unlock(buf);
@@ -1035,8 +1033,8 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
btrfs_tree_unlock(mid);
/* once for the path */
free_extent_buffer(mid);
- ret = btrfs_free_extent(trans, root, mid->start, mid->len,
- 0, root->root_key.objectid, level, 1);
+ ret = btrfs_free_tree_block(trans, root, mid->start, mid->len,
+ 0, root->root_key.objectid, level);
/* once for the root ptr */
free_extent_buffer(mid);
return ret;
@@ -1100,10 +1098,10 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
1);
if (wret)
ret = wret;
- wret = btrfs_free_extent(trans, root, bytenr,
- blocksize, 0,
- root->root_key.objectid,
- level, 0);
+ wret = btrfs_free_tree_block(trans, root,
+ bytenr, blocksize, 0,
+ root->root_key.objectid,
+ level);
if (wret)
ret = wret;
} else {
@@ -1148,9 +1146,8 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
wret = del_ptr(trans, root, path, level + 1, pslot);
if (wret)
ret = wret;
- wret = btrfs_free_extent(trans, root, bytenr, blocksize,
- 0, root->root_key.objectid,
- level, 0);
+ wret = btrfs_free_tree_block(trans, root, bytenr, blocksize,
+ 0, root->root_key.objectid, level);
if (wret)
ret = wret;
} else {
@@ -3794,8 +3791,8 @@ static noinline int btrfs_del_leaf(struct btrfs_trans_handle *trans,
*/
btrfs_unlock_up_safe(path, 0);
- ret = btrfs_free_extent(trans, root, leaf->start, leaf->len,
- 0, root->root_key.objectid, 0, 0);
+ ret = btrfs_free_tree_block(trans, root, leaf->start, leaf->len,
+ 0, root->root_key.objectid, 0);
return ret;
}
/*
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 1983c889bb1c..9f806dd04c27 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1982,6 +1982,10 @@ struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
u64 parent, u64 root_objectid,
struct btrfs_disk_key *key, int level,
u64 hint, u64 empty_size);
+int btrfs_free_tree_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ u64 bytenr, u32 blocksize,
+ u64 parent, u64 root_objectid, int level);
struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 bytenr, u32 blocksize,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index fcdccfa46004..44d7a322ec28 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3454,14 +3454,6 @@ static int update_block_group(struct btrfs_trans_handle *trans,
else
old_val -= num_bytes;
btrfs_set_super_bytes_used(&info->super_copy, old_val);
-
- /* block accounting for root item */
- old_val = btrfs_root_used(&root->root_item);
- if (alloc)
- old_val += num_bytes;
- else
- old_val -= num_bytes;
- btrfs_set_root_used(&root->root_item, old_val);
spin_unlock(&info->delalloc_lock);
while (total) {
@@ -4049,6 +4041,21 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
return ret;
}
+int btrfs_free_tree_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ u64 bytenr, u32 blocksize,
+ u64 parent, u64 root_objectid, int level)
+{
+ u64 used;
+ spin_lock(&root->node_lock);
+ used = btrfs_root_used(&root->root_item) - blocksize;
+ btrfs_set_root_used(&root->root_item, used);
+ spin_unlock(&root->node_lock);
+
+ return btrfs_free_extent(trans, root, bytenr, blocksize,
+ parent, root_objectid, level, 0);
+}
+
static u64 stripe_align(struct btrfs_root *root, u64 val)
{
u64 mask = ((u64)root->stripesize - 1);
@@ -4897,6 +4904,14 @@ static int alloc_tree_block(struct btrfs_trans_handle *trans,
extent_op);
BUG_ON(ret);
}
+
+ if (root_objectid == root->root_key.objectid) {
+ u64 used;
+ spin_lock(&root->node_lock);
+ used = btrfs_root_used(&root->root_item) + num_bytes;
+ btrfs_set_root_used(&root->root_item, used);
+ spin_unlock(&root->node_lock);
+ }
return ret;
}
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 3d6b33871afe..645a17927a8f 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -289,7 +289,7 @@ static noinline int create_subvol(struct btrfs_root *root,
btrfs_set_root_generation(&root_item, trans->transid);
btrfs_set_root_level(&root_item, 0);
btrfs_set_root_refs(&root_item, 1);
- btrfs_set_root_used(&root_item, 0);
+ btrfs_set_root_used(&root_item, leaf->len);
btrfs_set_root_last_snapshot(&root_item, 0);
memset(&root_item.drop_progress, 0, sizeof(root_item.drop_progress));
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 75b31caade29..b2acc79f1b34 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -501,13 +501,16 @@ static int update_cowonly_root(struct btrfs_trans_handle *trans,
{
int ret;
u64 old_root_bytenr;
+ u64 old_root_used;
struct btrfs_root *tree_root = root->fs_info->tree_root;
+ old_root_used = btrfs_root_used(&root->root_item);
btrfs_write_dirty_block_groups(trans, root);
while (1) {
old_root_bytenr = btrfs_root_bytenr(&root->root_item);
- if (old_root_bytenr == root->node->start)
+ if (old_root_bytenr == root->node->start &&
+ old_root_used == btrfs_root_used(&root->root_item))
break;
btrfs_set_root_node(&root->root_item, root->node);
@@ -516,6 +519,7 @@ static int update_cowonly_root(struct btrfs_trans_handle *trans,
&root->root_item);
BUG_ON(ret);
+ old_root_used = btrfs_root_used(&root->root_item);
ret = btrfs_write_dirty_block_groups(trans, root);
BUG_ON(ret);
}
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