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btrfs-progs: Cleanup use of root in leaf_data_end 

In function leaf_data_end, root is just used to get fs_info, so change
the parameter of this function from btrfs_root to btrfs_fs_info.  And
also make it consistent with kernel.

Add const to parameter leaf of function btrfs_item_offset_nr to keep
type consistent with leaf_data_end.

Signed-off-by: Gu Jinxiang <gujx@cn.fujitsu.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Gu Jinxiang 2018-01-31 11:09:19 +08:00 committed by David Sterba
parent f1bc621846
commit 4665484f5f
2 changed files with 18 additions and 16 deletions
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32
ctree.c
View File

@ -408,12 +408,12 @@ static int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2)
* this returns the address of the start of the last item,
* which is the stop of the leaf data stack
*/
static inline unsigned int leaf_data_end(struct btrfs_root *root,
struct extent_buffer *leaf)
static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info,
const struct extent_buffer *leaf)
{
u32 nr = btrfs_header_nritems(leaf);
if (nr == 0)
return BTRFS_LEAF_DATA_SIZE(root->fs_info);
return BTRFS_LEAF_DATA_SIZE(fs_info);
return btrfs_item_offset_nr(leaf, nr - 1);
}
@ -1735,10 +1735,10 @@ static int push_leaf_right(struct btrfs_trans_handle *trans, struct btrfs_root
right_nritems = btrfs_header_nritems(right);
push_space = btrfs_item_end_nr(left, left_nritems - push_items);
push_space -= leaf_data_end(root, left);
push_space -= leaf_data_end(fs_info, left);
/* make room in the right data area */
data_end = leaf_data_end(root, right);
data_end = leaf_data_end(fs_info, right);
memmove_extent_buffer(right,
btrfs_leaf_data(right) + data_end - push_space,
btrfs_leaf_data(right) + data_end,
@ -1747,7 +1747,7 @@ static int push_leaf_right(struct btrfs_trans_handle *trans, struct btrfs_root
/* copy from the left data area */
copy_extent_buffer(right, left, btrfs_leaf_data(right) +
BTRFS_LEAF_DATA_SIZE(root->fs_info) - push_space,
btrfs_leaf_data(left) + leaf_data_end(root, left),
btrfs_leaf_data(left) + leaf_data_end(fs_info, left),
push_space);
memmove_extent_buffer(right, btrfs_item_nr_offset(push_items),
@ -1885,7 +1885,7 @@ static int push_leaf_left(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_item_offset_nr(right, push_items -1);
copy_extent_buffer(left, right, btrfs_leaf_data(left) +
leaf_data_end(root, left) - push_space,
leaf_data_end(fs_info, left) - push_space,
btrfs_leaf_data(right) +
btrfs_item_offset_nr(right, push_items - 1),
push_space);
@ -1912,12 +1912,13 @@ static int push_leaf_left(struct btrfs_trans_handle *trans, struct btrfs_root
if (push_items < right_nritems) {
push_space = btrfs_item_offset_nr(right, push_items - 1) -
leaf_data_end(root, right);
leaf_data_end(fs_info, right);
memmove_extent_buffer(right, btrfs_leaf_data(right) +
BTRFS_LEAF_DATA_SIZE(root->fs_info) -
push_space,
btrfs_leaf_data(right) +
leaf_data_end(root, right), push_space);
leaf_data_end(fs_info, right),
push_space);
memmove_extent_buffer(right, btrfs_item_nr_offset(0),
btrfs_item_nr_offset(push_items),
@ -1976,7 +1977,8 @@ static noinline int copy_for_split(struct btrfs_trans_handle *trans,
nritems = nritems - mid;
btrfs_set_header_nritems(right, nritems);
data_copy_size = btrfs_item_end_nr(l, mid) - leaf_data_end(root, l);
data_copy_size = btrfs_item_end_nr(l, mid) -
leaf_data_end(root->fs_info, l);
copy_extent_buffer(right, l, btrfs_item_nr_offset(0),
btrfs_item_nr_offset(mid),
@ -1986,7 +1988,7 @@ static noinline int copy_for_split(struct btrfs_trans_handle *trans,
btrfs_leaf_data(right) +
BTRFS_LEAF_DATA_SIZE(root->fs_info) -
data_copy_size, btrfs_leaf_data(l) +
leaf_data_end(root, l), data_copy_size);
leaf_data_end(root->fs_info, l), data_copy_size);
rt_data_off = BTRFS_LEAF_DATA_SIZE(root->fs_info) -
btrfs_item_end_nr(l, mid);
@ -2324,7 +2326,7 @@ int btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path,
return 0;
nritems = btrfs_header_nritems(leaf);
data_end = leaf_data_end(root, leaf);
data_end = leaf_data_end(root->fs_info, leaf);
old_data_start = btrfs_item_offset_nr(leaf, slot);
@ -2413,7 +2415,7 @@ int btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path,
leaf = path->nodes[0];
nritems = btrfs_header_nritems(leaf);
data_end = leaf_data_end(root, leaf);
data_end = leaf_data_end(root->fs_info, leaf);
if (btrfs_leaf_free_space(root, leaf) < data_size) {
btrfs_print_leaf(root, leaf);
@ -2499,7 +2501,7 @@ int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
leaf = path->nodes[0];
nritems = btrfs_header_nritems(leaf);
data_end = leaf_data_end(root, leaf);
data_end = leaf_data_end(root->fs_info, leaf);
if (btrfs_leaf_free_space(root, leaf) < total_size) {
btrfs_print_leaf(root, leaf);
@ -2690,7 +2692,7 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
nritems = btrfs_header_nritems(leaf);
if (slot + nr != nritems) {
int data_end = leaf_data_end(root, leaf);
int data_end = leaf_data_end(root->fs_info, leaf);
memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) +
data_end + dsize,

2
ctree.h
View File

@ -1857,7 +1857,7 @@ static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr)
return btrfs_item_end(eb, btrfs_item_nr(nr));
}
static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr)
static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
{
return btrfs_item_offset(eb, btrfs_item_nr(nr));
}