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btrfs: move btrfs_defrag_root() to defrag.{c,h}

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The btrfs_defrag_root() function does not really belong in the
transaction.{c,h} module and as we have a defrag.{c,h} nowadays,
move it to there instead. This also allows to stop exporting
btrfs_defrag_leaves(), so we can make it static.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ rename info to fs_info for consistency ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2023-09-22 11:37:56 +01:00 committed by David Sterba
parent 8befc61cbb
commit 1723270f0c
4 changed files with 42 additions and 43 deletions
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43
fs/btrfs/defrag.c
View File

@ -343,8 +343,8 @@ int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info)
* better reflect disk order
*/
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
static int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
struct btrfs_path *path = NULL;
struct btrfs_key key;
@ -460,6 +460,45 @@ done:
return ret;
}
/*
* Defrag a given btree. Every leaf in the btree is read and defragmented.
*/
int btrfs_defrag_root(struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
int ret;
if (test_and_set_bit(BTRFS_ROOT_DEFRAG_RUNNING, &root->state))
return 0;
while (1) {
struct btrfs_trans_handle *trans;
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
break;
}
ret = btrfs_defrag_leaves(trans, root);
btrfs_end_transaction(trans);
btrfs_btree_balance_dirty(fs_info);
cond_resched();
if (btrfs_fs_closing(fs_info) || ret != -EAGAIN)
break;
if (btrfs_defrag_cancelled(fs_info)) {
btrfs_debug(fs_info, "defrag_root cancelled");
ret = -EAGAIN;
break;
}
}
clear_bit(BTRFS_ROOT_DEFRAG_RUNNING, &root->state);
return ret;
}
/*
* Defrag specific helper to get an extent map.
*

2
fs/btrfs/defrag.h
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@ -12,7 +12,7 @@ int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode, u32 extent_thresh);
int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info);
void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info);
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, struct btrfs_root *root);
int btrfs_defrag_root(struct btrfs_root *root);
static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info)
{

39
fs/btrfs/transaction.c
View File

@ -1564,45 +1564,6 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans)
return 0;
}
/*
* defrag a given btree.
* Every leaf in the btree is read and defragged.
*/
int btrfs_defrag_root(struct btrfs_root *root)
{
struct btrfs_fs_info *info = root->fs_info;
struct btrfs_trans_handle *trans;
int ret;
if (test_and_set_bit(BTRFS_ROOT_DEFRAG_RUNNING, &root->state))
return 0;
while (1) {
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
break;
}
ret = btrfs_defrag_leaves(trans, root);
btrfs_end_transaction(trans);
btrfs_btree_balance_dirty(info);
cond_resched();
if (btrfs_fs_closing(info) || ret != -EAGAIN)
break;
if (btrfs_defrag_cancelled(info)) {
btrfs_debug(info, "defrag_root cancelled");
ret = -EAGAIN;
break;
}
}
clear_bit(BTRFS_ROOT_DEFRAG_RUNNING, &root->state);
return ret;
}
/*
* Do all special snapshot related qgroup dirty hack.
*

1
fs/btrfs/transaction.h
View File

@ -246,7 +246,6 @@ struct btrfs_trans_handle *btrfs_attach_transaction_barrier(
int btrfs_wait_for_commit(struct btrfs_fs_info *fs_info, u64 transid);
void btrfs_add_dead_root(struct btrfs_root *root);
int btrfs_defrag_root(struct btrfs_root *root);
void btrfs_maybe_wake_unfinished_drop(struct btrfs_fs_info *fs_info);
int btrfs_clean_one_deleted_snapshot(struct btrfs_fs_info *fs_info);
int btrfs_commit_transaction(struct btrfs_trans_handle *trans);