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authorJan Schmidt <list.btrfs@jan-o-sch.net>2012-05-16 19:04:52 +0400
committerJan Schmidt <list.btrfs@jan-o-sch.net>2012-05-26 14:17:53 +0400
commit5581a51a59a1f5f51ac3d4bacafb738d35e0350b (patch)
treed7e291e139d08f2be7870c9da602658df8f51ce8 /fs/btrfs/ctree.c
parent976b1908d97bd8cbd024ba7aafaa3fb637ea8e13 (diff)
downloadlinux-5581a51a59a1f5f51ac3d4bacafb738d35e0350b.tar.xz
Btrfs: don't set for_cow parameter for tree block functions
Three callers of btrfs_free_tree_block or btrfs_alloc_tree_block passed parameter for_cow = 1. In fact, these two functions should never mark their tree modification operations as for_cow, because they can change the number of blocks referenced by a tree. Hence, we remove the extra for_cow parameter from these functions and make them pass a zero down. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Diffstat (limited to 'fs/btrfs/ctree.c')
-rw-r--r--fs/btrfs/ctree.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 4106264fbc65..56485b3b7c31 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -255,7 +255,7 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
cow = btrfs_alloc_free_block(trans, root, buf->len, 0,
new_root_objectid, &disk_key, level,
- buf->start, 0, 1);
+ buf->start, 0);
if (IS_ERR(cow))
return PTR_ERR(cow);
@@ -467,7 +467,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
cow = btrfs_alloc_free_block(trans, root, buf->len, parent_start,
root->root_key.objectid, &disk_key,
- level, search_start, empty_size, 1);
+ level, search_start, empty_size);
if (IS_ERR(cow))
return PTR_ERR(cow);
@@ -509,7 +509,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
rcu_assign_pointer(root->node, cow);
btrfs_free_tree_block(trans, root, buf, parent_start,
- last_ref, 1);
+ last_ref);
free_extent_buffer(buf);
add_root_to_dirty_list(root);
} else {
@@ -525,7 +525,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
trans->transid);
btrfs_mark_buffer_dirty(parent);
btrfs_free_tree_block(trans, root, buf, parent_start,
- last_ref, 1);
+ last_ref);
}
if (unlock_orig)
btrfs_tree_unlock(buf);
@@ -987,7 +987,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
free_extent_buffer(mid);
root_sub_used(root, mid->len);
- btrfs_free_tree_block(trans, root, mid, 0, 1, 0);
+ btrfs_free_tree_block(trans, root, mid, 0, 1);
/* once for the root ptr */
free_extent_buffer_stale(mid);
return 0;
@@ -1042,7 +1042,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
btrfs_tree_unlock(right);
del_ptr(trans, root, path, level + 1, pslot + 1);
root_sub_used(root, right->len);
- btrfs_free_tree_block(trans, root, right, 0, 1, 0);
+ btrfs_free_tree_block(trans, root, right, 0, 1);
free_extent_buffer_stale(right);
right = NULL;
} else {
@@ -1084,7 +1084,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
btrfs_tree_unlock(mid);
del_ptr(trans, root, path, level + 1, pslot);
root_sub_used(root, mid->len);
- btrfs_free_tree_block(trans, root, mid, 0, 1, 0);
+ btrfs_free_tree_block(trans, root, mid, 0, 1);
free_extent_buffer_stale(mid);
mid = NULL;
} else {
@@ -2129,7 +2129,7 @@ static noinline int insert_new_root(struct btrfs_trans_handle *trans,
c = btrfs_alloc_free_block(trans, root, root->nodesize, 0,
root->root_key.objectid, &lower_key,
- level, root->node->start, 0, 0);
+ level, root->node->start, 0);
if (IS_ERR(c))
return PTR_ERR(c);
@@ -2252,7 +2252,7 @@ static noinline int split_node(struct btrfs_trans_handle *trans,
split = btrfs_alloc_free_block(trans, root, root->nodesize, 0,
root->root_key.objectid,
- &disk_key, level, c->start, 0, 0);
+ &disk_key, level, c->start, 0);
if (IS_ERR(split))
return PTR_ERR(split);
@@ -3004,7 +3004,7 @@ again:
right = btrfs_alloc_free_block(trans, root, root->leafsize, 0,
root->root_key.objectid,
- &disk_key, 0, l->start, 0, 0);
+ &disk_key, 0, l->start, 0);
if (IS_ERR(right))
return PTR_ERR(right);
@@ -3804,7 +3804,7 @@ static noinline void btrfs_del_leaf(struct btrfs_trans_handle *trans,
root_sub_used(root, leaf->len);
extent_buffer_get(leaf);
- btrfs_free_tree_block(trans, root, leaf, 0, 1, 0);
+ btrfs_free_tree_block(trans, root, leaf, 0, 1);
free_extent_buffer_stale(leaf);
}
/*