linux/fs/nilfs2/direct.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * NILFS direct block pointer.
 *
 * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
 *
 * Written by Koji Sato.
 */

#include <linux/errno.h>
#include "nilfs.h"
#include "page.h"
#include "direct.h"
#include "alloc.h"
#include "dat.h"

static inline __le64 *nilfs_direct_dptrs(const struct nilfs_bmap *direct)
{ … }

static inline __u64
nilfs_direct_get_ptr(const struct nilfs_bmap *direct, __u64 key)
{ … }

static inline void nilfs_direct_set_ptr(struct nilfs_bmap *direct,
					__u64 key, __u64 ptr)
{ … }

static int nilfs_direct_lookup(const struct nilfs_bmap *direct,
			       __u64 key, int level, __u64 *ptrp)
{ … }

static int nilfs_direct_lookup_contig(const struct nilfs_bmap *direct,
				      __u64 key, __u64 *ptrp,
				      unsigned int maxblocks)
{ … }

static __u64
nilfs_direct_find_target_v(const struct nilfs_bmap *direct, __u64 key)
{ … }

static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
{ … }

static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key)
{ … }

static int nilfs_direct_seek_key(const struct nilfs_bmap *direct, __u64 start,
				 __u64 *keyp)
{ … }

static int nilfs_direct_last_key(const struct nilfs_bmap *direct, __u64 *keyp)
{ … }

static int nilfs_direct_check_insert(const struct nilfs_bmap *bmap, __u64 key)
{ … }

static int nilfs_direct_gather_data(struct nilfs_bmap *direct,
				    __u64 *keys, __u64 *ptrs, int nitems)
{ … }

int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap,
				    __u64 key, __u64 *keys, __u64 *ptrs, int n)
{ … }

static int nilfs_direct_propagate(struct nilfs_bmap *bmap,
				  struct buffer_head *bh)
{ … }

static int nilfs_direct_assign_v(struct nilfs_bmap *direct,
				 __u64 key, __u64 ptr,
				 struct buffer_head **bh,
				 sector_t blocknr,
				 union nilfs_binfo *binfo)
{ … }

static int nilfs_direct_assign_p(struct nilfs_bmap *direct,
				 __u64 key, __u64 ptr,
				 struct buffer_head **bh,
				 sector_t blocknr,
				 union nilfs_binfo *binfo)
{ … }

static int nilfs_direct_assign(struct nilfs_bmap *bmap,
			       struct buffer_head **bh,
			       sector_t blocknr,
			       union nilfs_binfo *binfo)
{ … }

static const struct nilfs_bmap_operations nilfs_direct_ops = …;


int nilfs_direct_init(struct nilfs_bmap *bmap)
{ … }