linux/fs/btrfs/tests/inode-tests.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2013 Fusion IO.  All rights reserved.
 */

#include <linux/types.h>
#include "btrfs-tests.h"
#include "../ctree.h"
#include "../btrfs_inode.h"
#include "../disk-io.h"
#include "../extent_io.h"
#include "../volumes.h"
#include "../compression.h"
#include "../accessors.h"

static void insert_extent(struct btrfs_root *root, u64 start, u64 len,
			  u64 ram_bytes, u64 offset, u64 disk_bytenr,
			  u64 disk_len, u32 type, u8 compression, int slot)
{ … }

static void insert_inode_item_key(struct btrfs_root *root)
{ … }

/*
 * Build the most complicated map of extents the earth has ever seen.  We want
 * this so we can test all of the corner cases of btrfs_get_extent.  Here is a
 * diagram of how the extents will look though this may not be possible we still
 * want to make sure everything acts normally (the last number is not inclusive)
 *
 * [0  - 6][     6 - 4096     ][ 4096 - 4100][4100 - 8195][8195  -  12291]
 * [inline][hole but no extent][    hole    ][   regular ][regular1 split]
 *
 * [12291 - 16387][16387 - 24579][24579 - 28675][ 28675 - 32771][32771 - 36867 ]
 * [    hole    ][regular1 split][   prealloc ][   prealloc1  ][prealloc1 written]
 *
 * [36867 - 45059][45059 - 53251][53251 - 57347][57347 - 61443][61443- 69635]
 * [  prealloc1  ][ compressed  ][ compressed1 ][    regular  ][ compressed1]
 *
 * [69635-73731][   73731 - 86019   ][86019-90115]
 * [  regular  ][ hole but no extent][  regular  ]
 */
static void setup_file_extents(struct btrfs_root *root, u32 sectorsize)
{ … }

static u32 prealloc_only = …;
static u32 compressed_only = …;
static u32 vacancy_only = …;

static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
{ … }

static int test_hole_first(u32 sectorsize, u32 nodesize)
{ … }

static int test_extent_accounting(u32 sectorsize, u32 nodesize)
{ … }

int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
{ … }