Commit d12ffdd1 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: move btrfs_block_rsv definitions into it's own header 



Prep work for separating out all of the block_rsv related code into its
own file.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 9b4851bc

fs/btrfs/block-rsv.h

0 → 100644
+77 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */



#ifndef BTRFS_BLOCK_RSV_H

#define BTRFS_BLOCK_RSV_H



enum btrfs_reserve_flush_enum;



/*

 * Types of block reserves

 */

enum {

	BTRFS_BLOCK_RSV_GLOBAL,

	BTRFS_BLOCK_RSV_DELALLOC,

	BTRFS_BLOCK_RSV_TRANS,

	BTRFS_BLOCK_RSV_CHUNK,

	BTRFS_BLOCK_RSV_DELOPS,

	BTRFS_BLOCK_RSV_DELREFS,

	BTRFS_BLOCK_RSV_EMPTY,

	BTRFS_BLOCK_RSV_TEMP,

};



struct btrfs_block_rsv {

	u64 size;

	u64 reserved;

	struct btrfs_space_info *space_info;

	spinlock_t lock;

	unsigned short full;

	unsigned short type;

	unsigned short failfast;



	/*

	 * Qgroup equivalent for @size @reserved

	 *

	 * Unlike normal @size/@reserved for inode rsv, qgroup doesn't care

	 * about things like csum size nor how many tree blocks it will need to

	 * reserve.

	 *

	 * Qgroup cares more about net change of the extent usage.

	 *

	 * So for one newly inserted file extent, in worst case it will cause

	 * leaf split and level increase, nodesize for each file extent is

	 * already too much.

	 *

	 * In short, qgroup_size/reserved is the upper limit of possible needed

	 * qgroup metadata reservation.

	 */

	u64 qgroup_rsv_size;

	u64 qgroup_rsv_reserved;

};



void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type);

struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info,

					      unsigned short type);

void btrfs_init_metadata_block_rsv(struct btrfs_fs_info *fs_info,

				   struct btrfs_block_rsv *rsv,

				   unsigned short type);

void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info,

			  struct btrfs_block_rsv *rsv);

int btrfs_block_rsv_add(struct btrfs_root *root,

			struct btrfs_block_rsv *block_rsv, u64 num_bytes,

			enum btrfs_reserve_flush_enum flush);

int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor);

int btrfs_block_rsv_refill(struct btrfs_root *root,

			   struct btrfs_block_rsv *block_rsv, u64 min_reserved,

			   enum btrfs_reserve_flush_enum flush);

int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,

			    struct btrfs_block_rsv *dst_rsv, u64 num_bytes,

			    bool update_size);

int btrfs_block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes);

int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,

			     struct btrfs_block_rsv *dest, u64 num_bytes,

			     int min_factor);

void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,

			     struct btrfs_block_rsv *block_rsv,

			     u64 num_bytes);



#endif /* BTRFS_BLOCK_RSV_H */

fs/btrfs/ctree.h

+1 −68
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#include "extent_io.h"

#include "extent_map.h"

#include "async-thread.h"

#include "block-rsv.h"



struct btrfs_trans_handle;

struct btrfs_transaction;
@@ -403,49 +404,6 @@ struct raid_kobject { 
	struct list_head list;

};



/*

 * Types of block reserves

 */

enum {

	BTRFS_BLOCK_RSV_GLOBAL,

	BTRFS_BLOCK_RSV_DELALLOC,

	BTRFS_BLOCK_RSV_TRANS,

	BTRFS_BLOCK_RSV_CHUNK,

	BTRFS_BLOCK_RSV_DELOPS,

	BTRFS_BLOCK_RSV_DELREFS,

	BTRFS_BLOCK_RSV_EMPTY,

	BTRFS_BLOCK_RSV_TEMP,

};



struct btrfs_block_rsv {

	u64 size;

	u64 reserved;

	struct btrfs_space_info *space_info;

	spinlock_t lock;

	unsigned short full;

	unsigned short type;

	unsigned short failfast;



	/*

	 * Qgroup equivalent for @size @reserved

	 *

	 * Unlike normal @size/@reserved for inode rsv, qgroup doesn't care

	 * about things like csum size nor how many tree blocks it will need to

	 * reserve.

	 *

	 * Qgroup cares more about net change of the extent usage.

	 *

	 * So for one newly inserted file extent, in worst case it will cause

	 * leaf split and level increase, nodesize for each file extent is

	 * already too much.

	 *

	 * In short, qgroup_size/reserved is the upper limit of possible needed

	 * qgroup metadata reservation.

	 */

	u64 qgroup_rsv_size;

	u64 qgroup_rsv_reserved;

};



/*

 * free clusters are used to claim free space in relatively large chunks,

 * allowing us to do less seeky writes. They are used for all metadata
@@ -2826,31 +2784,6 @@ void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes, 
				     bool qgroup_free);

int btrfs_delalloc_reserve_space(struct inode *inode,

			struct extent_changeset **reserved, u64 start, u64 len);

void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type);

struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info,

					      unsigned short type);

void btrfs_init_metadata_block_rsv(struct btrfs_fs_info *fs_info,

				   struct btrfs_block_rsv *rsv,

				   unsigned short type);

void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info,

			  struct btrfs_block_rsv *rsv);

int btrfs_block_rsv_add(struct btrfs_root *root,

			struct btrfs_block_rsv *block_rsv, u64 num_bytes,

			enum btrfs_reserve_flush_enum flush);

int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor);

int btrfs_block_rsv_refill(struct btrfs_root *root,

			   struct btrfs_block_rsv *block_rsv, u64 min_reserved,

			   enum btrfs_reserve_flush_enum flush);

int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,

			    struct btrfs_block_rsv *dst_rsv, u64 num_bytes,

			    bool update_size);

int btrfs_block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes);

int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,

			     struct btrfs_block_rsv *dest, u64 num_bytes,

			     int min_factor);

void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,

			     struct btrfs_block_rsv *block_rsv,

			     u64 num_bytes);

void btrfs_delayed_refs_rsv_release(struct btrfs_fs_info *fs_info, int nr);

void btrfs_update_delayed_refs_rsv(struct btrfs_trans_handle *trans);

int btrfs_delayed_refs_rsv_refill(struct btrfs_fs_info *fs_info,

fs/btrfs/extent-tree.c

+1 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include "qgroup.h"

#include "ref-verify.h"

#include "space-info.h"

#include "block-rsv.h"



#undef SCRAMBLE_DELAYED_REFS

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