xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Código Issues Pull requests Ações Pacotes Projetos Versões Wiki Atividade

Btrfs: dynamic allocation of path struct

Ver código fonte 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Esse commit está contido em:
Chris Mason
2007-04-02 11:20:42 -04:00
commit de David Woodhouse
pai 2c90e5d658
commit 5caf2a0029
6 arquivos alterados com 243 adições e 172 exclusões
Baixar arquivo de patch Baixar arquivo de diferenças Expandir todos os arquivos Colapsar todos os arquivos

47
fs/btrfs/root-tree.c
Ver arquivo

@@ -6,7 +6,7 @@
int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,
struct btrfs_root_item *item, struct btrfs_key *key)
{
struct btrfs_path path;
struct btrfs_path *path;
struct btrfs_key search_key;
struct btrfs_leaf *l;
int ret;
@@ -16,14 +16,16 @@ int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,
search_key.flags = (u32)-1;
search_key.offset = (u32)-1;
btrfs_init_path(&path);
ret = btrfs_search_slot(NULL, root, &search_key, &path, 0, 0);
path = btrfs_alloc_path();
BUG_ON(!path);
btrfs_init_path(path);
ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0);
if (ret < 0)
goto out;
BUG_ON(ret == 0);
l = btrfs_buffer_leaf(path.nodes[0]);
BUG_ON(path.slots[0] == 0);
slot = path.slots[0] - 1;
l = btrfs_buffer_leaf(path->nodes[0]);
BUG_ON(path->slots[0] == 0);
slot = path->slots[0] - 1;
if (btrfs_disk_key_objectid(&l->items[slot].key) != objectid) {
ret = 1;
goto out;
@@ -31,9 +33,10 @@ int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,
memcpy(item, btrfs_item_ptr(l, slot, struct btrfs_root_item),
sizeof(*item));
btrfs_disk_key_to_cpu(key, &l->items[slot].key);
btrfs_release_path(root, &path);
ret = 0;
out:
btrfs_release_path(root, path);
btrfs_free_path(path);
return ret;
}
@@ -41,24 +44,27 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, struct btrfs_root_item
*item)
{
struct btrfs_path path;
struct btrfs_path *path;
struct btrfs_leaf *l;
int ret;
int slot;
struct btrfs_root_item *update_item;
btrfs_init_path(&path);
ret = btrfs_search_slot(trans, root, key, &path, 0, 1);
path = btrfs_alloc_path();
BUG_ON(!path);
btrfs_init_path(path);
ret = btrfs_search_slot(trans, root, key, path, 0, 1);
if (ret < 0)
goto out;
BUG_ON(ret != 0);
l = btrfs_buffer_leaf(path.nodes[0]);
slot = path.slots[0];
l = btrfs_buffer_leaf(path->nodes[0]);
slot = path->slots[0];
update_item = btrfs_item_ptr(l, slot, struct btrfs_root_item);
btrfs_memcpy(root, l, update_item, item, sizeof(*item));
btrfs_mark_buffer_dirty(path.nodes[0]);
btrfs_mark_buffer_dirty(path->nodes[0]);
out:
btrfs_release_path(root, &path);
btrfs_release_path(root, path);
btrfs_free_path(path);
return ret;
}
@@ -75,16 +81,19 @@ int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root
int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_key *key)
{
struct btrfs_path path;
struct btrfs_path *path;
int ret;
btrfs_init_path(&path);
ret = btrfs_search_slot(trans, root, key, &path, -1, 1);
path = btrfs_alloc_path();
BUG_ON(!path);
btrfs_init_path(path);
ret = btrfs_search_slot(trans, root, key, path, -1, 1);
if (ret < 0)
goto out;
BUG_ON(ret != 0);
ret = btrfs_del_item(trans, root, &path);
ret = btrfs_del_item(trans, root, path);
out:
btrfs_release_path(root, &path);
btrfs_release_path(root, path);
btrfs_free_path(path);
return ret;
}