linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2007 Oracle.  All rights reserved.

 */

​

#include <linux/blkdev.h>

#include <linux/module.h>

#include <linux/fs.h>

#include <linux/pagemap.h>

#include <linux/highmem.h>

#include <linux/time.h>

#include <linux/init.h>

#include <linux/seq_file.h>

#include <linux/string.h>

#include <linux/backing-dev.h>

#include <linux/mount.h>

#include <linux/writeback.h>

#include <linux/statfs.h>

#include <linux/compat.h>

#include <linux/parser.h>

#include <linux/ctype.h>

#include <linux/namei.h>

#include <linux/miscdevice.h>

#include <linux/magic.h>

#include <linux/slab.h>

#include <linux/cleancache.h>

#include <linux/ratelimit.h>

#include <linux/crc32c.h>

#include <linux/btrfs.h>

#include "delayed-inode.h"

#include "ctree.h"

#include "disk-io.h"

#include "transaction.h"

#include "btrfs_inode.h"

#include "print-tree.h"

#include "props.h"

#include "xattr.h"

#include "volumes.h"

#include "export.h"

#include "compression.h"

#include "rcu-string.h"

#include "dev-replace.h"

#include "free-space-cache.h"

#include "backref.h"

#include "tests/btrfs-tests.h"

​

#include "qgroup.h"

#define CREATE_TRACE_POINTS

#include <trace/events/btrfs.h>

​

static const struct super_operations btrfs_super_ops;

​

/*

 * Types for mounting the default subvolume and a subvolume explicitly

 * requested by subvol=/path. That way the callchain is straightforward and we

 * don't have to play tricks with the mount options and recursive calls to

 * btrfs_mount.

 *

 * The new btrfs_root_fs_type also servers as a tag for the bdev_holder.

 */

static struct file_system_type btrfs_fs_type;

static struct file_system_type btrfs_root_fs_type;

​

static int btrfs_remount(struct super_block *sb, int *flags, char *data);

​

const char *btrfs_decode_error(int errno)

{

    char *errstr = "unknown";

​

    switch (errno) {

    case -EIO:

        errstr = "IO failure";

        break;

    case -ENOMEM:

        errstr = "Out of memory";

        break;

    case -EROFS:

        errstr = "Readonly filesystem";

        break;

    case -EEXIST:

        errstr = "Object already exists";

        break;

    case -ENOSPC:

        errstr = "No space left";

        break;

    case -ENOENT:

        errstr = "No such entry";

        break;

    }

​

    return errstr;

}