Commit 9c7d3a54 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: move extent_io_tree defs to their own header 



extent_io.c/h are huge, encompassing a bunch of different things.  The
extent_io_tree code can live on its own, so separate this out.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 6f0d04f8

fs/btrfs/ctree.h

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/dynamic_debug.h>

#include <linux/refcount.h>

#include <linux/crc32c.h>

#include "extent-io-tree.h"

#include "extent_io.h"

#include "extent_map.h"

#include "async-thread.h"

fs/btrfs/extent-io-tree.h

0 → 100644
+227 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */



#ifndef BTRFS_EXTENT_IO_TREE_H

#define BTRFS_EXTENT_IO_TREE_H



struct extent_changeset;



/* Bits for the extent state */

#define EXTENT_DIRTY		(1U << 0)

#define EXTENT_UPTODATE		(1U << 1)

#define EXTENT_LOCKED		(1U << 2)

#define EXTENT_NEW		(1U << 3)

#define EXTENT_DELALLOC		(1U << 4)

#define EXTENT_DEFRAG		(1U << 5)

#define EXTENT_BOUNDARY		(1U << 6)

#define EXTENT_NODATASUM	(1U << 7)

#define EXTENT_CLEAR_META_RESV	(1U << 8)

#define EXTENT_NEED_WAIT	(1U << 9)

#define EXTENT_DAMAGED		(1U << 10)

#define EXTENT_NORESERVE	(1U << 11)

#define EXTENT_QGROUP_RESERVED	(1U << 12)

#define EXTENT_CLEAR_DATA_RESV	(1U << 13)

#define EXTENT_DELALLOC_NEW	(1U << 14)

#define EXTENT_DO_ACCOUNTING    (EXTENT_CLEAR_META_RESV | \

				 EXTENT_CLEAR_DATA_RESV)

#define EXTENT_CTLBITS		(EXTENT_DO_ACCOUNTING)



/*

 * Redefined bits above which are used only in the device allocation tree,

 * shouldn't be using EXTENT_LOCKED / EXTENT_BOUNDARY / EXTENT_CLEAR_META_RESV

 * / EXTENT_CLEAR_DATA_RESV because they have special meaning to the bit

 * manipulation functions

 */

#define CHUNK_ALLOCATED				EXTENT_DIRTY

#define CHUNK_TRIMMED				EXTENT_DEFRAG



enum {

	IO_TREE_FS_INFO_FREED_EXTENTS0,

	IO_TREE_FS_INFO_FREED_EXTENTS1,

	IO_TREE_INODE_IO,

	IO_TREE_INODE_IO_FAILURE,

	IO_TREE_RELOC_BLOCKS,

	IO_TREE_TRANS_DIRTY_PAGES,

	IO_TREE_ROOT_DIRTY_LOG_PAGES,

	IO_TREE_SELFTEST,

};



struct extent_io_tree {

	struct rb_root state;

	struct btrfs_fs_info *fs_info;

	void *private_data;

	u64 dirty_bytes;

	bool track_uptodate;



	/* Who owns this io tree, should be one of IO_TREE_* */

	u8 owner;



	spinlock_t lock;

	const struct extent_io_ops *ops;

};



struct extent_state {

	u64 start;

	u64 end; /* inclusive */

	struct rb_node rb_node;



	/* ADD NEW ELEMENTS AFTER THIS */

	wait_queue_head_t wq;

	refcount_t refs;

	unsigned state;



	struct io_failure_record *failrec;



#ifdef CONFIG_BTRFS_DEBUG

	struct list_head leak_list;

#endif

};



int __init extent_state_cache_init(void);

void __cold extent_state_cache_exit(void);



void extent_io_tree_init(struct btrfs_fs_info *fs_info,

			 struct extent_io_tree *tree, unsigned int owner,

			 void *private_data);

void extent_io_tree_release(struct extent_io_tree *tree);



int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,

		     struct extent_state **cached);



static inline int lock_extent(struct extent_io_tree *tree, u64 start, u64 end)

{

	return lock_extent_bits(tree, start, end, NULL);

}



int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end);



int __init extent_io_init(void);

void __cold extent_io_exit(void);



u64 count_range_bits(struct extent_io_tree *tree,

		     u64 *start, u64 search_end,

		     u64 max_bytes, unsigned bits, int contig);



void free_extent_state(struct extent_state *state);

int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,

		   unsigned bits, int filled,

		   struct extent_state *cached_state);

int clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,

		unsigned bits, struct extent_changeset *changeset);

int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		     unsigned bits, int wake, int delete,

		     struct extent_state **cached);

int __clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		     unsigned bits, int wake, int delete,

		     struct extent_state **cached, gfp_t mask,

		     struct extent_changeset *changeset);



static inline int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end)

{

	return clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, NULL);

}



static inline int unlock_extent_cached(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached)

{

	return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached,

				GFP_NOFS, NULL);

}



static inline int unlock_extent_cached_atomic(struct extent_io_tree *tree,

		u64 start, u64 end, struct extent_state **cached)

{

	return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached,

				GFP_ATOMIC, NULL);

}



static inline int clear_extent_bits(struct extent_io_tree *tree, u64 start,

		u64 end, unsigned bits)

{

	int wake = 0;



	if (bits & EXTENT_LOCKED)

		wake = 1;



	return clear_extent_bit(tree, start, end, bits, wake, 0, NULL);

}



int set_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,

			   unsigned bits, struct extent_changeset *changeset);

int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		   unsigned bits, u64 *failed_start,

		   struct extent_state **cached_state, gfp_t mask);

int set_extent_bits_nowait(struct extent_io_tree *tree, u64 start, u64 end,

			   unsigned bits);



static inline int set_extent_bits(struct extent_io_tree *tree, u64 start,

		u64 end, unsigned bits)

{

	return set_extent_bit(tree, start, end, bits, NULL, NULL, GFP_NOFS);

}



static inline int clear_extent_uptodate(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached_state)

{

	return __clear_extent_bit(tree, start, end, EXTENT_UPTODATE, 0, 0,

				cached_state, GFP_NOFS, NULL);

}



static inline int set_extent_dirty(struct extent_io_tree *tree, u64 start,

		u64 end, gfp_t mask)

{

	return set_extent_bit(tree, start, end, EXTENT_DIRTY, NULL,

			      NULL, mask);

}



static inline int clear_extent_dirty(struct extent_io_tree *tree, u64 start,

				     u64 end, struct extent_state **cached)

{

	return clear_extent_bit(tree, start, end,

				EXTENT_DIRTY | EXTENT_DELALLOC |

				EXTENT_DO_ACCOUNTING, 0, 0, cached);

}



int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		       unsigned bits, unsigned clear_bits,

		       struct extent_state **cached_state);



static inline int set_extent_delalloc(struct extent_io_tree *tree, u64 start,

				      u64 end, unsigned int extra_bits,

				      struct extent_state **cached_state)

{

	return set_extent_bit(tree, start, end,

			      EXTENT_DELALLOC | EXTENT_UPTODATE | extra_bits,

			      NULL, cached_state, GFP_NOFS);

}



static inline int set_extent_defrag(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached_state)

{

	return set_extent_bit(tree, start, end,

			      EXTENT_DELALLOC | EXTENT_UPTODATE | EXTENT_DEFRAG,

			      NULL, cached_state, GFP_NOFS);

}



static inline int set_extent_new(struct extent_io_tree *tree, u64 start,

		u64 end)

{

	return set_extent_bit(tree, start, end, EXTENT_NEW, NULL, NULL,

			GFP_NOFS);

}



static inline int set_extent_uptodate(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached_state, gfp_t mask)

{

	return set_extent_bit(tree, start, end, EXTENT_UPTODATE, NULL,

			      cached_state, mask);

}



int find_first_extent_bit(struct extent_io_tree *tree, u64 start,

			  u64 *start_ret, u64 *end_ret, unsigned bits,

			  struct extent_state **cached_state);

void find_first_clear_extent_bit(struct extent_io_tree *tree, u64 start,

				 u64 *start_ret, u64 *end_ret, unsigned bits);

int extent_invalidatepage(struct extent_io_tree *tree,

			  struct page *page, unsigned long offset);



#endif /* BTRFS_EXTENT_IO_TREE_H */

fs/btrfs/extent_io.c

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/prefetch.h>

#include <linux/cleancache.h>

#include "extent_io.h"

#include "extent-io-tree.h"

#include "extent_map.h"

#include "ctree.h"

#include "btrfs_inode.h"

fs/btrfs/extent_io.h

+1 −216
Original line number Diff line number Diff line
@@ -7,35 +7,6 @@ 
#include <linux/refcount.h>

#include "ulist.h"



/* bits for the extent state */

#define EXTENT_DIRTY		(1U << 0)

#define EXTENT_UPTODATE		(1U << 1)

#define EXTENT_LOCKED		(1U << 2)

#define EXTENT_NEW		(1U << 3)

#define EXTENT_DELALLOC		(1U << 4)

#define EXTENT_DEFRAG		(1U << 5)

#define EXTENT_BOUNDARY		(1U << 6)

#define EXTENT_NODATASUM	(1U << 7)

#define EXTENT_CLEAR_META_RESV	(1U << 8)

#define EXTENT_NEED_WAIT	(1U << 9)

#define EXTENT_DAMAGED		(1U << 10)

#define EXTENT_NORESERVE	(1U << 11)

#define EXTENT_QGROUP_RESERVED	(1U << 12)

#define EXTENT_CLEAR_DATA_RESV	(1U << 13)

#define EXTENT_DELALLOC_NEW	(1U << 14)

#define EXTENT_DO_ACCOUNTING    (EXTENT_CLEAR_META_RESV | \

				 EXTENT_CLEAR_DATA_RESV)

#define EXTENT_CTLBITS		(EXTENT_DO_ACCOUNTING)



/*

 * Redefined bits above which are used only in the device allocation tree,

 * shouldn't be using EXTENT_LOCKED / EXTENT_BOUNDARY / EXTENT_CLEAR_META_RESV

 * / EXTENT_CLEAR_DATA_RESV because they have special meaning to the bit

 * manipulation functions

 */

#define CHUNK_ALLOCATED EXTENT_DIRTY

#define CHUNK_TRIMMED   EXTENT_DEFRAG



/*

 * flags for bio submission. The high bits indicate the compression

 * type for this bio
@@ -89,12 +60,11 @@ enum { 
#define BITMAP_LAST_BYTE_MASK(nbits) \

	(BYTE_MASK >> (-(nbits) & (BITS_PER_BYTE - 1)))



struct extent_state;

struct btrfs_root;

struct btrfs_inode;

struct btrfs_io_bio;

struct io_failure_record;



struct extent_io_tree;



typedef blk_status_t (extent_submit_bio_start_t)(void *private_data,

		struct bio *bio, u64 bio_offset);
@@ -111,47 +81,6 @@ struct extent_io_ops { 
				    int mirror);

};



enum {

	IO_TREE_FS_INFO_FREED_EXTENTS0,

	IO_TREE_FS_INFO_FREED_EXTENTS1,

	IO_TREE_INODE_IO,

	IO_TREE_INODE_IO_FAILURE,

	IO_TREE_RELOC_BLOCKS,

	IO_TREE_TRANS_DIRTY_PAGES,

	IO_TREE_ROOT_DIRTY_LOG_PAGES,

	IO_TREE_SELFTEST,

};



struct extent_io_tree {

	struct rb_root state;

	struct btrfs_fs_info *fs_info;

	void *private_data;

	u64 dirty_bytes;

	bool track_uptodate;



	/* Who owns this io tree, should be one of IO_TREE_* */

	u8 owner;



	spinlock_t lock;

	const struct extent_io_ops *ops;

};



struct extent_state {

	u64 start;

	u64 end; /* inclusive */

	struct rb_node rb_node;



	/* ADD NEW ELEMENTS AFTER THIS */

	wait_queue_head_t wq;

	refcount_t refs;

	unsigned state;



	struct io_failure_record *failrec;



#ifdef CONFIG_BTRFS_DEBUG

	struct list_head leak_list;

#endif

};



#define INLINE_EXTENT_BUFFER_PAGES 16

#define MAX_INLINE_EXTENT_BUFFER_SIZE (INLINE_EXTENT_BUFFER_PAGES * PAGE_SIZE)
@@ -259,152 +188,11 @@ typedef struct extent_map *(get_extent_t)(struct btrfs_inode *inode, 
					  u64 start, u64 len,

					  int create);



void extent_io_tree_init(struct btrfs_fs_info *fs_info,

			 struct extent_io_tree *tree, unsigned int owner,

			 void *private_data);

void extent_io_tree_release(struct extent_io_tree *tree);

int try_release_extent_mapping(struct page *page, gfp_t mask);

int try_release_extent_buffer(struct page *page);

int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,

		     struct extent_state **cached);



static inline int lock_extent(struct extent_io_tree *tree, u64 start, u64 end)

{

	return lock_extent_bits(tree, start, end, NULL);

}



int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end);

int extent_read_full_page(struct extent_io_tree *tree, struct page *page,

			  get_extent_t *get_extent, int mirror_num);

int __init extent_io_init(void);

void __cold extent_io_exit(void);



u64 count_range_bits(struct extent_io_tree *tree,

		     u64 *start, u64 search_end,

		     u64 max_bytes, unsigned bits, int contig);



void free_extent_state(struct extent_state *state);

int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,

		   unsigned bits, int filled,

		   struct extent_state *cached_state);

int clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,

		unsigned bits, struct extent_changeset *changeset);

int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		     unsigned bits, int wake, int delete,

		     struct extent_state **cached);

int __clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		     unsigned bits, int wake, int delete,

		     struct extent_state **cached, gfp_t mask,

		     struct extent_changeset *changeset);



static inline int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end)

{

	return clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, NULL);

}



static inline int unlock_extent_cached(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached)

{

	return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached,

				GFP_NOFS, NULL);

}



static inline int unlock_extent_cached_atomic(struct extent_io_tree *tree,

		u64 start, u64 end, struct extent_state **cached)

{

	return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached,

				GFP_ATOMIC, NULL);

}



static inline int clear_extent_bits(struct extent_io_tree *tree, u64 start,

		u64 end, unsigned bits)

{

	int wake = 0;



	if (bits & EXTENT_LOCKED)

		wake = 1;



	return clear_extent_bit(tree, start, end, bits, wake, 0, NULL);

}



int set_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,

			   unsigned bits, struct extent_changeset *changeset);

int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		   unsigned bits, u64 *failed_start,

		   struct extent_state **cached_state, gfp_t mask);

int set_extent_bits_nowait(struct extent_io_tree *tree, u64 start, u64 end,

			   unsigned bits);



static inline int set_extent_bits(struct extent_io_tree *tree, u64 start,

		u64 end, unsigned bits)

{

	return set_extent_bit(tree, start, end, bits, NULL, NULL, GFP_NOFS);

}



static inline int clear_extent_uptodate(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached_state)

{

	return __clear_extent_bit(tree, start, end, EXTENT_UPTODATE, 0, 0,

				cached_state, GFP_NOFS, NULL);

}



static inline int set_extent_dirty(struct extent_io_tree *tree, u64 start,

		u64 end, gfp_t mask)

{

	return set_extent_bit(tree, start, end, EXTENT_DIRTY, NULL,

			      NULL, mask);

}



static inline int clear_extent_dirty(struct extent_io_tree *tree, u64 start,

				     u64 end, struct extent_state **cached)

{

	return clear_extent_bit(tree, start, end,

				EXTENT_DIRTY | EXTENT_DELALLOC |

				EXTENT_DO_ACCOUNTING, 0, 0, cached);

}



int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,

		       unsigned bits, unsigned clear_bits,

		       struct extent_state **cached_state);



static inline int set_extent_delalloc(struct extent_io_tree *tree, u64 start,

				      u64 end, unsigned int extra_bits,

				      struct extent_state **cached_state)

{

	return set_extent_bit(tree, start, end,

			      EXTENT_DELALLOC | EXTENT_UPTODATE | extra_bits,

			      NULL, cached_state, GFP_NOFS);

}



static inline int set_extent_defrag(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached_state)

{

	return set_extent_bit(tree, start, end,

			      EXTENT_DELALLOC | EXTENT_UPTODATE | EXTENT_DEFRAG,

			      NULL, cached_state, GFP_NOFS);

}



static inline int set_extent_new(struct extent_io_tree *tree, u64 start,

		u64 end)

{

	return set_extent_bit(tree, start, end, EXTENT_NEW, NULL, NULL,

			GFP_NOFS);

}



static inline int set_extent_uptodate(struct extent_io_tree *tree, u64 start,

		u64 end, struct extent_state **cached_state, gfp_t mask)

{

	return set_extent_bit(tree, start, end, EXTENT_UPTODATE, NULL,

			      cached_state, mask);

}



int find_first_extent_bit(struct extent_io_tree *tree, u64 start,

			  u64 *start_ret, u64 *end_ret, unsigned bits,

			  struct extent_state **cached_state);

void find_first_clear_extent_bit(struct extent_io_tree *tree, u64 start,

				 u64 *start_ret, u64 *end_ret, unsigned bits);

int extent_invalidatepage(struct extent_io_tree *tree,

			  struct page *page, unsigned long offset);

int extent_write_full_page(struct page *page, struct writeback_control *wbc);

int extent_write_locked_range(struct inode *inode, u64 start, u64 end,

			      int mode);
@@ -555,7 +343,4 @@ bool find_lock_delalloc_range(struct inode *inode, 
#endif

struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info,

					       u64 start);



int __init extent_state_cache_init(void);

void __cold extent_state_cache_exit(void);

#endif

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