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Commit e69bcee3 authored by Qu Wenruo's avatar Qu Wenruo Committed by Chris Mason
Browse files

btrfs: qgroup: Cleanup the old ref_node-oriented mechanism. 



Goodbye, the old mechanisim.

Signed-off-by: default avatarQu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent 442244c9

fs/btrfs/ctree.h

+1 −1
Original line number Diff line number Diff line
@@ -1736,7 +1736,7 @@ struct btrfs_fs_info { 
	/* list of dirty qgroups to be written at next commit */

	struct list_head dirty_qgroups;



	/* used by btrfs_qgroup_record_ref for an efficient tree traversal */

	/* used by qgroup for an efficient tree traversal */

	u64 qgroup_seq;



	/* qgroup rescan items */

fs/btrfs/extent-tree.c

+0 −5
Original line number Diff line number Diff line
@@ -1981,7 +1981,6 @@ static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, 
	u64 refs;

	int ret;

	int no_quota = node->no_quota;

	enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_ADD_EXCL;



	path = btrfs_alloc_path();

	if (!path)
@@ -2009,8 +2008,6 @@ static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, 
	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);

	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);

	refs = btrfs_extent_refs(leaf, item);

	if (refs)

		type = BTRFS_QGROUP_OPER_ADD_SHARED;

	btrfs_set_extent_refs(leaf, item, refs + refs_to_add);

	if (extent_op)

		__run_delayed_extent_op(extent_op, leaf, item);
@@ -6112,7 +6109,6 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, 
	u64 bytenr = node->bytenr;

	u64 num_bytes = node->num_bytes;

	int last_ref = 0;

	enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_SUB_EXCL;

	bool skinny_metadata = btrfs_fs_incompat(root->fs_info,

						 SKINNY_METADATA);
@@ -6293,7 +6289,6 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, 
	refs -= refs_to_drop;



	if (refs > 0) {

		type = BTRFS_QGROUP_OPER_SUB_SHARED;

		if (extent_op)

			__run_delayed_extent_op(extent_op, leaf, ei);

		/*

fs/btrfs/qgroup.c

+2 −862

File changed.

Preview size limit exceeded, changes collapsed.

fs/btrfs/qgroup.h

+0 −49
Original line number Diff line number Diff line
@@ -22,45 +22,6 @@ 
#include "ulist.h"

#include "delayed-ref.h"



/*

 * A description of the operations, all of these operations only happen when we

 * are adding the 1st reference for that subvolume in the case of adding space

 * or on the last reference delete in the case of subtraction.  The only

 * exception is the last one, which is added for confusion.

 *

 * BTRFS_QGROUP_OPER_ADD_EXCL: adding bytes where this subvolume is the only

 * one pointing at the bytes we are adding.  This is called on the first

 * allocation.

 *

 * BTRFS_QGROUP_OPER_ADD_SHARED: adding bytes where this bytenr is going to be

 * shared between subvols.  This is called on the creation of a ref that already

 * has refs from a different subvolume, so basically reflink.

 *

 * BTRFS_QGROUP_OPER_SUB_EXCL: removing bytes where this subvolume is the only

 * one referencing the range.

 *

 * BTRFS_QGROUP_OPER_SUB_SHARED: removing bytes where this subvolume shares with

 * refs with other subvolumes.

 */

enum btrfs_qgroup_operation_type {

	BTRFS_QGROUP_OPER_ADD_EXCL,

	BTRFS_QGROUP_OPER_ADD_SHARED,

	BTRFS_QGROUP_OPER_SUB_EXCL,

	BTRFS_QGROUP_OPER_SUB_SHARED,

	BTRFS_QGROUP_OPER_SUB_SUBTREE,

};



struct btrfs_qgroup_operation {

	u64 ref_root;

	u64 bytenr;

	u64 num_bytes;

	u64 seq;

	enum btrfs_qgroup_operation_type type;

	struct seq_list elem;

	struct rb_node n;

	struct list_head list;

};



/*

 * Record a dirty extent, and info qgroup to update quota on it

 * TODO: Use kmem cache to alloc it.
@@ -93,11 +54,6 @@ int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, 
int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info);

void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info);

struct btrfs_delayed_extent_op;

int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans,

			    struct btrfs_fs_info *fs_info, u64 ref_root,

			    u64 bytenr, u64 num_bytes,

			    enum btrfs_qgroup_operation_type type,

			    int mod_seq);

int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans,

					 struct btrfs_fs_info *fs_info);

struct btrfs_qgroup_extent_record
@@ -110,11 +66,6 @@ btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, 
			    struct ulist *old_roots, struct ulist *new_roots);

int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans,

				 struct btrfs_fs_info *fs_info);

int btrfs_delayed_qgroup_accounting(struct btrfs_trans_handle *trans,

				    struct btrfs_fs_info *fs_info);

void btrfs_remove_qgroup_operation(struct btrfs_trans_handle *trans,

				   struct btrfs_fs_info *fs_info,

				   struct btrfs_qgroup_operation *oper);

int btrfs_run_qgroups(struct btrfs_trans_handle *trans,

		      struct btrfs_fs_info *fs_info);

int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,

include/trace/events/btrfs.h

+0 −55
Original line number Diff line number Diff line
@@ -1117,61 +1117,6 @@ DEFINE_EVENT(btrfs__workqueue_done, btrfs_workqueue_destroy, 
	TP_ARGS(wq)

);



#define show_oper_type(type)						\

	__print_symbolic(type,						\

		{ BTRFS_QGROUP_OPER_ADD_EXCL, 	"OPER_ADD_EXCL" },	\

		{ BTRFS_QGROUP_OPER_ADD_SHARED, "OPER_ADD_SHARED" },	\

		{ BTRFS_QGROUP_OPER_SUB_EXCL, 	"OPER_SUB_EXCL" },	\

		{ BTRFS_QGROUP_OPER_SUB_SHARED,	"OPER_SUB_SHARED" })



DECLARE_EVENT_CLASS(btrfs_qgroup_oper,



	TP_PROTO(struct btrfs_qgroup_operation *oper),



	TP_ARGS(oper),



	TP_STRUCT__entry(

		__field(	u64,  ref_root		)

		__field(	u64,  bytenr		)

		__field(	u64,  num_bytes		)

		__field(	u64,  seq		)

		__field(	int,  type		)

		__field(	u64,  elem_seq		)

	),



	TP_fast_assign(

		__entry->ref_root	= oper->ref_root;

		__entry->bytenr		= oper->bytenr,

		__entry->num_bytes	= oper->num_bytes;

		__entry->seq 		= oper->seq;

		__entry->type		= oper->type;

		__entry->elem_seq	= oper->elem.seq;

	),



	TP_printk("ref_root = %llu, bytenr = %llu, num_bytes = %llu, "

		  "seq = %llu, elem.seq = %llu, type = %s",

		  (unsigned long long)__entry->ref_root,

		  (unsigned long long)__entry->bytenr,

		  (unsigned long long)__entry->num_bytes,

		  (unsigned long long)__entry->seq,

		  (unsigned long long)__entry->elem_seq,

		  show_oper_type(__entry->type))

);



DEFINE_EVENT(btrfs_qgroup_oper, btrfs_qgroup_account,



	TP_PROTO(struct btrfs_qgroup_operation *oper),



	TP_ARGS(oper)

);



DEFINE_EVENT(btrfs_qgroup_oper, btrfs_qgroup_record_ref,



	TP_PROTO(struct btrfs_qgroup_operation *oper),



	TP_ARGS(oper)

);



#endif /* _TRACE_BTRFS_H */



/* This part must be outside protection */