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btrfs: root->fs_info cleanup, add fs_info convenience variables

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In routines where someptr->fs_info is referenced multiple times, we
introduce a convenience variable.  This makes the code considerably
more readable.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jeff Mahoney 2016-06-22 18:54:23 -04:00 • committed by David Sterba
parent 6202df6921
commit 0b246afa62
33 changed files with 2251 additions and 2016 deletions
Download patch file Download diff file Expand all files Collapse all files

37
fs/btrfs/delayed-inode.c
View file

@ -538,6 +538,7 @@ static int btrfs_delayed_item_reserve_metadata(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_delayed_item *item)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_block_rsv *src_rsv;
struct btrfs_block_rsv *dst_rsv;
u64 num_bytes;
@ -547,12 +548,12 @@ static int btrfs_delayed_item_reserve_metadata(struct btrfs_trans_handle *trans,
return 0;
src_rsv = trans->block_rsv;
dst_rsv = &root->fs_info->delayed_block_rsv;
dst_rsv = &fs_info->delayed_block_rsv;
num_bytes = btrfs_calc_trans_metadata_size(root->fs_info, 1);
num_bytes = btrfs_calc_trans_metadata_size(fs_info, 1);
ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1);
if (!ret) {
trace_btrfs_space_reservation(root->fs_info, "delayed_item",
trace_btrfs_space_reservation(fs_info, "delayed_item",
item->key.objectid,
num_bytes, 1);
item->bytes_reserved = num_bytes;
@ -564,13 +565,14 @@ static int btrfs_delayed_item_reserve_metadata(struct btrfs_trans_handle *trans,
static void btrfs_delayed_item_release_metadata(struct btrfs_root *root,
struct btrfs_delayed_item *item)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_block_rsv *rsv;
if (!item->bytes_reserved)
return;
rsv = &root->fs_info->delayed_block_rsv;
trace_btrfs_space_reservation(root->fs_info, "delayed_item",
rsv = &fs_info->delayed_block_rsv;
trace_btrfs_space_reservation(fs_info, "delayed_item",
item->key.objectid, item->bytes_reserved,
0);
btrfs_block_rsv_release(root, rsv,
@ -583,6 +585,7 @@ static int btrfs_delayed_inode_reserve_metadata(
struct inode *inode,
struct btrfs_delayed_node *node)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_block_rsv *src_rsv;
struct btrfs_block_rsv *dst_rsv;
u64 num_bytes;
@ -590,9 +593,9 @@ static int btrfs_delayed_inode_reserve_metadata(
bool release = false;
src_rsv = trans->block_rsv;
dst_rsv = &root->fs_info->delayed_block_rsv;
dst_rsv = &fs_info->delayed_block_rsv;
num_bytes = btrfs_calc_trans_metadata_size(root->fs_info, 1);
num_bytes = btrfs_calc_trans_metadata_size(fs_info, 1);
/*
* If our block_rsv is the delalloc block reserve then check and see if
@ -640,7 +643,7 @@ static int btrfs_delayed_inode_reserve_metadata(
ret = -ENOSPC;
if (!ret) {
node->bytes_reserved = num_bytes;
trace_btrfs_space_reservation(root->fs_info,
trace_btrfs_space_reservation(fs_info,
"delayed_inode",
btrfs_ino(inode),
num_bytes, 1);
@ -664,13 +667,13 @@ static int btrfs_delayed_inode_reserve_metadata(
* how block rsvs. work.
*/
if (!ret) {
trace_btrfs_space_reservation(root->fs_info, "delayed_inode",
trace_btrfs_space_reservation(fs_info, "delayed_inode",
btrfs_ino(inode), num_bytes, 1);
node->bytes_reserved = num_bytes;
}
if (release) {
trace_btrfs_space_reservation(root->fs_info, "delalloc",
trace_btrfs_space_reservation(fs_info, "delalloc",
btrfs_ino(inode), num_bytes, 0);
btrfs_block_rsv_release(root, src_rsv, num_bytes);
}
@ -681,13 +684,14 @@ static int btrfs_delayed_inode_reserve_metadata(
static void btrfs_delayed_inode_release_metadata(struct btrfs_root *root,
struct btrfs_delayed_node *node)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_block_rsv *rsv;
if (!node->bytes_reserved)
return;
rsv = &root->fs_info->delayed_block_rsv;
trace_btrfs_space_reservation(root->fs_info, "delayed_inode",
rsv = &fs_info->delayed_block_rsv;
trace_btrfs_space_reservation(fs_info, "delayed_inode",
node->inode_id, node->bytes_reserved, 0);
btrfs_block_rsv_release(root, rsv,
node->bytes_reserved);
@ -1140,6 +1144,7 @@ __btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans,
static int __btrfs_run_delayed_items(struct btrfs_trans_handle *trans,
struct btrfs_root *root, int nr)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_delayed_root *delayed_root;
struct btrfs_delayed_node *curr_node, *prev_node;
struct btrfs_path *path;
@ -1156,7 +1161,7 @@ static int __btrfs_run_delayed_items(struct btrfs_trans_handle *trans,
path->leave_spinning = 1;
block_rsv = trans->block_rsv;
trans->block_rsv = &root->fs_info->delayed_block_rsv;
trans->block_rsv = &fs_info->delayed_block_rsv;
delayed_root = btrfs_get_delayed_root(root);
@ -1860,6 +1865,7 @@ release_node:
int btrfs_delayed_delete_inode_ref(struct inode *inode)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_delayed_node *delayed_node;
/*
@ -1867,8 +1873,7 @@ int btrfs_delayed_delete_inode_ref(struct inode *inode)
* leads to enospc problems. This means we also can't do
* delayed inode refs
*/
if (test_bit(BTRFS_FS_LOG_RECOVERING,
&BTRFS_I(inode)->root->fs_info->flags))
if (test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags))
return -EAGAIN;
delayed_node = btrfs_get_or_create_delayed_node(inode);
@ -1895,7 +1900,7 @@ int btrfs_delayed_delete_inode_ref(struct inode *inode)
set_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags);
delayed_node->count++;
atomic_inc(&BTRFS_I(inode)->root->fs_info->delayed_root->items);
atomic_inc(&fs_info->delayed_root->items);
release_node:
mutex_unlock(&delayed_node->mutex);
btrfs_release_delayed_node(delayed_node);