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/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_MOUNT_H__
#define __XFS_MOUNT_H__
typedef struct xfs_trans_reservations {
uint tr_write; /* extent alloc trans */
uint tr_itruncate; /* truncate trans */
uint tr_rename; /* rename trans */
uint tr_link; /* link trans */
uint tr_remove; /* unlink trans */
uint tr_symlink; /* symlink trans */
uint tr_create; /* create trans */
uint tr_mkdir; /* mkdir trans */
uint tr_ifree; /* inode free trans */
uint tr_ichange; /* inode update trans */
uint tr_growdata; /* fs data section grow trans */
uint tr_swrite; /* sync write inode trans */
uint tr_addafork; /* cvt inode to attributed trans */
uint tr_writeid; /* write setuid/setgid file */
uint tr_attrinval; /* attr fork buffer invalidation */
uint tr_attrset; /* set/create an attribute */
uint tr_attrrm; /* remove an attribute */
uint tr_clearagi; /* clear bad agi unlinked ino bucket */
uint tr_growrtalloc; /* grow realtime allocations */
uint tr_growrtzero; /* grow realtime zeroing */
uint tr_growrtfree; /* grow realtime freeing */
} xfs_trans_reservations_t;
#ifndef __KERNEL__
#define xfs_daddr_to_agno(mp,d) \
((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
#define xfs_daddr_to_agbno(mp,d) \
((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
#else /* __KERNEL__ */
#include "xfs_sync.h"
struct cred;
struct log;
struct xfs_mount_args;
struct xfs_inode;
struct xfs_bmbt_irec;
struct xfs_bmap_free;
struct xfs_extdelta;
struct xfs_swapext;
struct xfs_mru_cache;
struct xfs_nameops;
struct xfs_ail;
struct xfs_quotainfo;
/*
* Prototypes and functions for the Data Migration subsystem.
*/
typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
xfs_off_t, size_t, int, int *);
typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
struct xfs_inode *, dm_right_t,
struct xfs_inode *, dm_right_t,
const unsigned char *, const unsigned char *,
mode_t, int, int);
typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
char *, char *);
typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
dm_right_t, mode_t, int, int);
typedef struct xfs_dmops {
xfs_send_data_t xfs_send_data;
xfs_send_mmap_t xfs_send_mmap;
xfs_send_destroy_t xfs_send_destroy;
xfs_send_namesp_t xfs_send_namesp;
xfs_send_mount_t xfs_send_mount;
xfs_send_unmount_t xfs_send_unmount;
} xfs_dmops_t;
#define XFS_DMAPI_UNMOUNT_FLAGS(mp) \
(((mp)->m_dmevmask & (1 << DM_EVENT_UNMOUNT)) ? 0 : DM_FLAGS_UNWANTED)
#define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
(*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
#define XFS_SEND_MMAP(mp, vma,fl) \
(*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
#define XFS_SEND_DESTROY(mp, ip,right) \
(*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
(*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
#define XFS_SEND_MOUNT(mp,right,path,name) \
(*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
#define XFS_SEND_PREUNMOUNT(mp) \
do { \
if (mp->m_flags & XFS_MOUNT_DMAPI) { \
(*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT, mp, \
(mp)->m_rootip, DM_RIGHT_NULL, \
(mp)->m_rootip, DM_RIGHT_NULL, \
NULL, NULL, 0, 0, XFS_DMAPI_UNMOUNT_FLAGS(mp)); \
} \
} while (0)
#define XFS_SEND_UNMOUNT(mp) \
do { \
if (mp->m_flags & XFS_MOUNT_DMAPI) { \
(*(mp)->m_dm_ops->xfs_send_unmount)(mp, (mp)->m_rootip, \
DM_RIGHT_NULL, 0, 0, XFS_DMAPI_UNMOUNT_FLAGS(mp)); \
} \
} while (0)
#ifdef HAVE_PERCPU_SB
/*
* Valid per-cpu incore superblock counters. Note that if you add new counters,
* you may need to define new counter disabled bit field descriptors as there
* are more possible fields in the superblock that can fit in a bitfield on a
* 32 bit platform. The XFS_SBS_* values for the current current counters just
* fit.
*/
typedef struct xfs_icsb_cnts {
uint64_t icsb_fdblocks;
uint64_t icsb_ifree;
uint64_t icsb_icount;
unsigned long icsb_flags;
} xfs_icsb_cnts_t;
#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
extern int xfs_icsb_init_counters(struct xfs_mount *);
extern void xfs_icsb_reinit_counters(struct xfs_mount *);
extern void xfs_icsb_destroy_counters(struct xfs_mount *);
extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
#else
#define xfs_icsb_init_counters(mp) (0)
#define xfs_icsb_destroy_counters(mp) do { } while (0)
#define xfs_icsb_reinit_counters(mp) do { } while (0)
#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
#endif
typedef struct xfs_mount {
struct super_block *m_super;
xfs_tid_t m_tid; /* next unused tid for fs */
struct xfs_ail *m_ail; /* fs active log item list */
xfs_sb_t m_sb; /* copy of fs superblock */
spinlock_t m_sb_lock; /* sb counter lock */
struct xfs_buf *m_sb_bp; /* buffer for superblock */
char *m_fsname; /* filesystem name */
int m_fsname_len; /* strlen of fs name */
char *m_rtname; /* realtime device name */
char *m_logname; /* external log device name */
int m_bsize; /* fs logical block size */
xfs_agnumber_t m_agfrotor; /* last ag where space found */
xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
spinlock_t m_agirotor_lock;/* .. and lock protecting it */
xfs_agnumber_t m_maxagi; /* highest inode alloc group */
uint m_readio_log; /* min read size log bytes */
uint m_readio_blocks; /* min read size blocks */
uint m_writeio_log; /* min write size log bytes */
uint m_writeio_blocks; /* min write size blocks */
struct log *m_log; /* log specific stuff */
int m_logbufs; /* number of log buffers */
int m_logbsize; /* size of each log buffer */
uint m_rsumlevels; /* rt summary levels */
uint m_rsumsize; /* size of rt summary, bytes */
struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
struct xfs_inode *m_rsumip; /* pointer to summary inode */
struct xfs_inode *m_rootip; /* pointer to root directory */
struct xfs_quotainfo *m_quotainfo; /* disk quota information */
xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
__uint8_t m_blkbit_log; /* blocklog + NBBY */
__uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
__uint8_t m_agno_log; /* log #ag's */
__uint8_t m_agino_log; /* #bits for agino in inum */
__uint16_t m_inode_cluster_size;/* min inode buf size */
uint m_blockmask; /* sb_blocksize-1 */
uint m_blockwsize; /* sb_blocksize in words */
uint m_blockwmask; /* blockwsize-1 */
uint m_alloc_mxr[2]; /* max alloc btree records */
uint m_alloc_mnr[2]; /* min alloc btree records */
uint m_bmap_dmxr[2]; /* max bmap btree records */
uint m_bmap_dmnr[2]; /* min bmap btree records */
uint m_inobt_mxr[2]; /* max inobt btree records */
uint m_inobt_mnr[2]; /* min inobt btree records */
uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
uint m_in_maxlevels; /* max inobt btree levels. */
struct radix_tree_root m_perag_tree; /* per-ag accounting info */
spinlock_t m_perag_lock; /* lock for m_perag_tree */
struct mutex m_growlock; /* growfs mutex */
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_dmevmask; /* DMI events for this FS */
__uint64_t m_flags; /* global mount flags */
uint m_dir_node_ents; /* #entries in a dir danode */
uint m_attr_node_ents; /* #entries in attr danode */
int m_ialloc_inos; /* inodes in inode allocation */
int m_ialloc_blks; /* blocks in inode allocation */
int m_inoalign_mask;/* mask sb_inoalignmt if used */
uint m_qflags; /* quota status flags */
xfs_trans_reservations_t m_reservations;/* precomputed res values */
__uint64_t m_maxicount; /* maximum inode count */
__uint64_t m_maxioffset; /* maximum inode offset */
__uint64_t m_resblks; /* total reserved blocks */
__uint64_t m_resblks_avail;/* available reserved blocks */
__uint64_t m_resblks_save; /* reserved blks @ remount,ro */
int m_dalign; /* stripe unit */
int m_swidth; /* stripe width */
int m_sinoalign; /* stripe unit inode alignment */
int m_attr_magicpct;/* 37% of the blocksize */
int m_dir_magicpct; /* 37% of the dir blocksize */
__uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
int m_dirblksize; /* directory block sz--bytes */
int m_dirblkfsbs; /* directory block sz--fsbs */
xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
uint m_chsize; /* size of next field */
struct xfs_chash *m_chash; /* fs private inode per-cluster
* hash table */
struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
atomic_t m_active_trans; /* number trans frozen */
#ifdef HAVE_PERCPU_SB
xfs_icsb_cnts_t __percpu *m_sb_cnts; /* per-cpu superblock counters */
unsigned long m_icsb_counters; /* disabled per-cpu counters */
struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
struct mutex m_icsb_mutex; /* balancer sync lock */
#endif
struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
struct task_struct *m_sync_task; /* generalised sync thread */
xfs_sync_work_t m_sync_work; /* work item for VFS
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