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OpenCloudOS-Kernel
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btrfs: simplify pointer chasing of local fs_info variables 

Functions that get btrfs inode can simply reach the fs_info by
dereferencing the root and this looks a bit more straightforward
compared to the btrfs_sb(...) indirection.

If the transaction handle is available and not NULL it's used instead.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2018-06-29 10:56:42 +02:00
parent 3750851562
commit 3ffbd68c48
8 changed files with 22 additions and 25 deletions
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4
fs/btrfs/delayed-inode.c
View File

@ -1222,7 +1222,7 @@ int btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans,
int btrfs_commit_inode_delayed_inode(struct btrfs_inode *inode)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
struct btrfs_trans_handle *trans;
struct btrfs_delayed_node *delayed_node = btrfs_get_delayed_node(inode);
struct btrfs_path *path;
@ -1837,7 +1837,7 @@ release_node:
int btrfs_delayed_delete_inode_ref(struct btrfs_inode *inode)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
struct btrfs_delayed_node *delayed_node;
/*

2
fs/btrfs/disk-io.c
View File

@ -212,7 +212,7 @@ struct extent_map *btree_get_extent(struct btrfs_inode *inode,
struct page *page, size_t pg_offset, u64 start, u64 len,
int create)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
struct extent_map_tree *em_tree = &inode->extent_tree;
struct extent_map *em;
int ret;

6
fs/btrfs/extent-tree.c
View File

@ -5889,7 +5889,7 @@ static void btrfs_calculate_inode_block_rsv_size(struct btrfs_fs_info *fs_info,
int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
unsigned nr_extents;
enum btrfs_reserve_flush_enum flush = BTRFS_RESERVE_FLUSH_ALL;
int ret = 0;
@ -5962,7 +5962,7 @@ out_fail:
void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes,
bool qgroup_free)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
num_bytes = ALIGN(num_bytes, fs_info->sectorsize);
spin_lock(&inode->lock);
@ -5991,7 +5991,7 @@ void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes,
void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes,
bool qgroup_free)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
unsigned num_extents;
spin_lock(&inode->lock);

2
fs/btrfs/file-item.c
View File

@ -922,7 +922,7 @@ void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
const bool new_inline,
struct extent_map *em)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
struct btrfs_root *root = inode->root;
struct extent_buffer *leaf = path->nodes[0];
const int slot = path->slots[0];

14
fs/btrfs/file.c
View File

@ -83,7 +83,7 @@ static int __compare_inode_defrag(struct inode_defrag *defrag1,
static int __btrfs_add_inode_defrag(struct btrfs_inode *inode,
struct inode_defrag *defrag)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
struct inode_defrag *entry;
struct rb_node **p;
struct rb_node *parent = NULL;
@ -135,8 +135,8 @@ static inline int __need_auto_defrag(struct btrfs_fs_info *fs_info)
int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_root *root = inode->root;
struct btrfs_fs_info *fs_info = root->fs_info;
struct inode_defrag *defrag;
u64 transid;
int ret;
@ -185,7 +185,7 @@ int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
static void btrfs_requeue_inode_defrag(struct btrfs_inode *inode,
struct inode_defrag *defrag)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
int ret;
if (!__need_auto_defrag(fs_info))
@ -1132,7 +1132,7 @@ static int extent_mergeable(struct extent_buffer *leaf, int slot,
int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode, u64 start, u64 end)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_root *root = inode->root;
struct extent_buffer *leaf;
struct btrfs_path *path;
@ -1469,7 +1469,7 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages,
u64 *lockstart, u64 *lockend,
struct extent_state **cached_state)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
u64 start_pos;
u64 last_pos;
int i;
@ -1525,7 +1525,7 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages,
static noinline int check_can_nocow(struct btrfs_inode *inode, loff_t pos,
size_t *write_bytes)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
struct btrfs_root *root = inode->root;
struct btrfs_ordered_extent *ordered;
u64 lockstart, lockend;
@ -2227,7 +2227,7 @@ static int fill_holes(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode,
struct btrfs_path *path, u64 offset, u64 end)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_root *root = inode->root;
struct extent_buffer *leaf;
struct btrfs_file_extent_item *fi;

7
fs/btrfs/free-space-cache.c
View File

@ -655,7 +655,7 @@ static int __load_free_space_cache(struct btrfs_root *root, struct inode *inode,
struct btrfs_free_space_ctl *ctl,
struct btrfs_path *path, u64 offset)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_free_space_header *header;
struct extent_buffer *leaf;
struct btrfs_io_ctl io_ctl;
@ -1123,13 +1123,10 @@ static int __btrfs_wait_cache_io(struct btrfs_root *root,
{
int ret;
struct inode *inode = io_ctl->inode;
struct btrfs_fs_info *fs_info;
if (!inode)
return 0;
fs_info = btrfs_sb(inode->i_sb);
/* Flush the dirty pages in the cache file. */
ret = flush_dirty_cache(inode);
if (ret)
@ -1145,7 +1142,7 @@ out:
BTRFS_I(inode)->generation = 0;
if (block_group) {
#ifdef DEBUG
btrfs_err(fs_info,
btrfs_err(root->fs_info,
"failed to write free space cache for block group %llu",
block_group->key.objectid);
#endif

6
fs/btrfs/inode.c
View File

@ -1751,7 +1751,7 @@ static void btrfs_add_delalloc_inodes(struct btrfs_root *root,
void __btrfs_del_delalloc_inode(struct btrfs_root *root,
struct btrfs_inode *inode)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = root->fs_info;
if (!list_empty(&inode->delalloc_inodes)) {
list_del_init(&inode->delalloc_inodes);
@ -6418,7 +6418,7 @@ int btrfs_add_link(struct btrfs_trans_handle *trans,
struct btrfs_inode *parent_inode, struct btrfs_inode *inode,
const char *name, int name_len, int add_backref, u64 index)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = trans->fs_info;
int ret = 0;
struct btrfs_key key;
struct btrfs_root *root = parent_inode->root;
@ -6846,7 +6846,7 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
size_t pg_offset, u64 start, u64 len,
int create)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = inode->root->fs_info;
int ret;
int err = 0;
u64 extent_start = 0;

6
fs/btrfs/tree-log.c
View File

@ -3739,7 +3739,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
int start_slot, int nr, int inode_only,
u64 logged_isize)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = trans->fs_info;
unsigned long src_offset;
unsigned long dst_offset;
struct btrfs_root *log = inode->root->log_root;
@ -5436,7 +5436,7 @@ static int btrfs_log_all_parents(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode,
struct btrfs_log_ctx *ctx)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = trans->fs_info;
int ret;
struct btrfs_path *path;
struct btrfs_key key;
@ -5971,7 +5971,7 @@ int btrfs_log_new_name(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode, struct btrfs_inode *old_dir,
struct dentry *parent)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
struct btrfs_fs_info *fs_info = trans->fs_info;
/*
* this will force the logging code to walk the dentry chain