linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _FS_CEPH_SUPER_H

#define _FS_CEPH_SUPER_H

​

#include <linux/ceph/ceph_debug.h>

​

#include <asm/unaligned.h>

#include <linux/backing-dev.h>

#include <linux/completion.h>

#include <linux/exportfs.h>

#include <linux/fs.h>

#include <linux/mempool.h>

#include <linux/pagemap.h>

#include <linux/wait.h>

#include <linux/writeback.h>

#include <linux/slab.h>

#include <linux/posix_acl.h>

#include <linux/refcount.h>

​

#include <linux/ceph/libceph.h>

​

#ifdef CONFIG_CEPH_FSCACHE

#include <linux/fscache.h>

#endif

​

/* f_type in struct statfs */

#define CEPH_SUPER_MAGIC 0x00c36400

​

/* large granularity for statfs utilization stats to facilitate

 * large volume sizes on 32-bit machines. */

#define CEPH_BLOCK_SHIFT   22  /* 4 MB */

#define CEPH_BLOCK         (1 << CEPH_BLOCK_SHIFT)

​

#define CEPH_MOUNT_OPT_DIRSTAT         (1<<4) /* `cat dirname` for stats */

#define CEPH_MOUNT_OPT_RBYTES          (1<<5) /* dir st_bytes = rbytes */

#define CEPH_MOUNT_OPT_NOASYNCREADDIR  (1<<7) /* no dcache readdir */

#define CEPH_MOUNT_OPT_INO32           (1<<8) /* 32 bit inos */

#define CEPH_MOUNT_OPT_DCACHE          (1<<9) /* use dcache for readdir etc */

#define CEPH_MOUNT_OPT_FSCACHE         (1<<10) /* use fscache */

#define CEPH_MOUNT_OPT_NOPOOLPERM      (1<<11) /* no pool permission check */

#define CEPH_MOUNT_OPT_MOUNTWAIT       (1<<12) /* mount waits if no mds is up */

#define CEPH_MOUNT_OPT_NOQUOTADF       (1<<13) /* no root dir quota in statfs */

#define CEPH_MOUNT_OPT_NOCOPYFROM      (1<<14) /* don't use RADOS 'copy-from' op */

​

#define CEPH_MOUNT_OPT_DEFAULT          \

    (CEPH_MOUNT_OPT_DCACHE |        \

     CEPH_MOUNT_OPT_NOCOPYFROM)

​

#define ceph_set_mount_opt(fsc, opt) \

    (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt;

#define ceph_test_mount_opt(fsc, opt) \

    (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))

​

/* max size of osd read request, limited by libceph */

#define CEPH_MAX_READ_SIZE              CEPH_MSG_MAX_DATA_LEN

/* osd has a configurable limitaion of max write size.

 * CEPH_MSG_MAX_DATA_LEN should be small enough. */

#define CEPH_MAX_WRITE_SIZE     CEPH_MSG_MAX_DATA_LEN

#define CEPH_RASIZE_DEFAULT             (8192*1024)    /* max readahead */

#define CEPH_MAX_READDIR_DEFAULT        1024

#define CEPH_MAX_READDIR_BYTES_DEFAULT  (512*1024)

#define CEPH_SNAPDIRNAME_DEFAULT        ".snap"

​