xfs_mount.h 21.9 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
/*
 * 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 version 2 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.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */
#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__
/*
 * Moved here from xfs_ag.h to avoid reordering header files
 */
#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
struct cred;
struct log;
struct vfs;
struct vnode;
struct xfs_mount_args;
struct xfs_ihash;
struct xfs_chash;
struct xfs_inode;
struct xfs_perag;
struct xfs_iocore;
struct xfs_bmbt_irec;
struct xfs_bmap_free;

#define	AIL_LOCK_T		lock_t
#define	AIL_LOCKINIT(x,y)	spinlock_init(x,y)
#define	AIL_LOCK_DESTROY(x)	spinlock_destroy(x)
#define	AIL_LOCK(mp,s)		s=mutex_spinlock(&(mp)->m_ail_lock)
#define	AIL_UNLOCK(mp,s)	mutex_spinunlock(&(mp)->m_ail_lock, s)


/*
 * Prototypes and functions for the Data Migration subsystem.
 */

typedef int	(*xfs_send_data_t)(int, struct vnode *,
			xfs_off_t, size_t, int, vrwlock_t *);
typedef int	(*xfs_send_mmap_t)(struct vm_area_struct *, uint);
typedef int	(*xfs_send_destroy_t)(struct vnode *, dm_right_t);
typedef int	(*xfs_send_namesp_t)(dm_eventtype_t, struct vfs *,
			struct vnode *,
			dm_right_t, struct vnode *, dm_right_t,
			char *, char *, mode_t, int, int);
typedef void	(*xfs_send_unmount_t)(struct vfs *, struct vnode *,
			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_unmount_t	xfs_send_unmount;
} xfs_dmops_t;

#define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
	(*(mp)->m_dm_ops.xfs_send_data)(ev,vp,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, vp,right) \
	(*(mp)->m_dm_ops.xfs_send_destroy)(vp,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_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
	(*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl)
#define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \
	(*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl)


/*
 * Prototypes and functions for the Quota Management subsystem.
 */

struct xfs_dquot;
struct xfs_dqtrxops;
struct xfs_quotainfo;

typedef int	(*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
typedef int	(*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
typedef int	(*xfs_qmunmount_t)(struct xfs_mount *);
typedef void	(*xfs_qmdone_t)(struct xfs_mount *);
typedef void	(*xfs_dqrele_t)(struct xfs_dquot *);
typedef int	(*xfs_dqattach_t)(struct xfs_inode *, uint);
typedef void	(*xfs_dqdetach_t)(struct xfs_inode *);
typedef int	(*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
typedef int	(*xfs_dqvopalloc_t)(struct xfs_mount *,
144
			struct xfs_inode *, uid_t, gid_t, prid_t, uint,
L
Linus Torvalds 已提交
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187
			struct xfs_dquot **, struct xfs_dquot **);
typedef void	(*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
			struct xfs_dquot *, struct xfs_dquot *);
typedef int	(*xfs_dqvoprename_t)(struct xfs_inode **);
typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
			struct xfs_trans *, struct xfs_inode *,
			struct xfs_dquot **, struct xfs_dquot *);
typedef int	(*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
			struct xfs_dquot *, struct xfs_dquot *, uint);

typedef struct xfs_qmops {
	xfs_qminit_t		xfs_qminit;
	xfs_qmdone_t		xfs_qmdone;
	xfs_qmmount_t		xfs_qmmount;
	xfs_qmunmount_t		xfs_qmunmount;
	xfs_dqrele_t		xfs_dqrele;
	xfs_dqattach_t		xfs_dqattach;
	xfs_dqdetach_t		xfs_dqdetach;
	xfs_dqpurgeall_t	xfs_dqpurgeall;
	xfs_dqvopalloc_t	xfs_dqvopalloc;
	xfs_dqvopcreate_t	xfs_dqvopcreate;
	xfs_dqvoprename_t	xfs_dqvoprename;
	xfs_dqvopchown_t	xfs_dqvopchown;
	xfs_dqvopchownresv_t	xfs_dqvopchownresv;
	struct xfs_dqtrxops	*xfs_dqtrxops;
} xfs_qmops_t;

#define XFS_QM_INIT(mp, mnt, fl) \
	(*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl)
#define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
	(*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags)
#define XFS_QM_UNMOUNT(mp) \
	(*(mp)->m_qm_ops.xfs_qmunmount)(mp)
#define XFS_QM_DONE(mp) \
	(*(mp)->m_qm_ops.xfs_qmdone)(mp)
#define XFS_QM_DQRELE(mp, dq) \
	(*(mp)->m_qm_ops.xfs_dqrele)(dq)
#define XFS_QM_DQATTACH(mp, ip, fl) \
	(*(mp)->m_qm_ops.xfs_dqattach)(ip, fl)
#define XFS_QM_DQDETACH(mp, ip) \
	(*(mp)->m_qm_ops.xfs_dqdetach)(ip)
#define XFS_QM_DQPURGEALL(mp, fl) \
	(*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl)
188 189
#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
	(*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
L
Linus Torvalds 已提交
190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212
#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
	(*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2)
#define XFS_QM_DQVOPRENAME(mp, ip) \
	(*(mp)->m_qm_ops.xfs_dqvoprename)(ip)
#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
	(*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq)
#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
	(*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)


/*
 * Prototypes and functions for I/O core modularization.
 */

typedef int		(*xfs_ioinit_t)(struct vfs *,
				struct xfs_mount_args *, int);
typedef int		(*xfs_bmapi_t)(struct xfs_trans *, void *,
				xfs_fileoff_t, xfs_filblks_t, int,
				xfs_fsblock_t *, xfs_extlen_t,
				struct xfs_bmbt_irec *, int *,
				struct xfs_bmap_free *);
typedef int		(*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
typedef int		(*xfs_iomap_write_direct_t)(
213
				void *, xfs_off_t, size_t, int,
L
Linus Torvalds 已提交
214 215
				struct xfs_bmbt_irec *, int *, int);
typedef int		(*xfs_iomap_write_delay_t)(
216
				void *, xfs_off_t, size_t, int,
L
Linus Torvalds 已提交
217 218
				struct xfs_bmbt_irec *, int *);
typedef int		(*xfs_iomap_write_allocate_t)(
219
				void *, xfs_off_t, size_t,
220
				struct xfs_bmbt_irec *, int *);
L
Linus Torvalds 已提交
221
typedef int		(*xfs_iomap_write_unwritten_t)(
222
				void *, xfs_off_t, size_t);
L
Linus Torvalds 已提交
223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261
typedef uint		(*xfs_lck_map_shared_t)(void *);
typedef void		(*xfs_lock_t)(void *, uint);
typedef void		(*xfs_lock_demote_t)(void *, uint);
typedef int		(*xfs_lock_nowait_t)(void *, uint);
typedef void		(*xfs_unlk_t)(void *, unsigned int);
typedef xfs_fsize_t	(*xfs_size_t)(void *);
typedef xfs_fsize_t	(*xfs_iodone_t)(struct vfs *);

typedef struct xfs_ioops {
	xfs_ioinit_t			xfs_ioinit;
	xfs_bmapi_t			xfs_bmapi_func;
	xfs_bmap_eof_t			xfs_bmap_eof_func;
	xfs_iomap_write_direct_t	xfs_iomap_write_direct;
	xfs_iomap_write_delay_t		xfs_iomap_write_delay;
	xfs_iomap_write_allocate_t	xfs_iomap_write_allocate;
	xfs_iomap_write_unwritten_t	xfs_iomap_write_unwritten;
	xfs_lock_t			xfs_ilock;
	xfs_lck_map_shared_t		xfs_lck_map_shared;
	xfs_lock_demote_t		xfs_ilock_demote;
	xfs_lock_nowait_t		xfs_ilock_nowait;
	xfs_unlk_t			xfs_unlock;
	xfs_size_t			xfs_size_func;
	xfs_iodone_t			xfs_iodone;
} xfs_ioops_t;

#define XFS_IOINIT(vfsp, args, flags) \
	(*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist)	\
	(*(mp)->m_io_ops.xfs_bmapi_func) \
		(trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist)
#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
	(*(mp)->m_io_ops.xfs_bmap_eof_func) \
		((io)->io_obj, endoff, whichfork, eof)
#define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
	(*(mp)->m_io_ops.xfs_iomap_write_direct) \
		((io)->io_obj, offset, count, flags, mval, nmap, found)
#define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
	(*(mp)->m_io_ops.xfs_iomap_write_delay) \
		((io)->io_obj, offset, count, flags, mval, nmap)
262
#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
L
Linus Torvalds 已提交
263
	(*(mp)->m_io_ops.xfs_iomap_write_allocate) \
264
		((io)->io_obj, offset, count, mval, nmap)
L
Linus Torvalds 已提交
265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417
#define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
	(*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
		((io)->io_obj, offset, count)
#define XFS_LCK_MAP_SHARED(mp, io) \
	(*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
#define XFS_ILOCK(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
#define XFS_ILOCK_NOWAIT(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
#define XFS_IUNLOCK(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
#define XFS_ILOCK_DEMOTE(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
#define XFS_SIZE(mp, io) \
	(*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
#define XFS_IODONE(vfsp) \
	(*(mp)->m_io_ops.xfs_iodone)(vfsp)


typedef struct xfs_mount {
	bhv_desc_t		m_bhv;		/* vfs xfs behavior */
	xfs_tid_t		m_tid;		/* next unused tid for fs */
	AIL_LOCK_T		m_ail_lock;	/* fs AIL mutex */
	xfs_ail_entry_t		m_ail;		/* fs active log item list */
	uint			m_ail_gen;	/* fs AIL generation count */
	xfs_sb_t		m_sb;		/* copy of fs superblock */
	lock_t			m_sb_lock;	/* sb counter mutex */
	struct xfs_buf		*m_sb_bp;	/* buffer for superblock */
	char			*m_fsname;	/* filesystem name */
	int			m_fsname_len;	/* strlen of fs 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 */
	lock_t			m_agirotor_lock;/* .. and lock protecting it */
	xfs_agnumber_t		m_maxagi;	/* highest inode alloc group */
	uint			m_ihsize;	/* size of next field */
	struct xfs_ihash	*m_ihash;	/* fs private inode hash table*/
	struct xfs_inode	*m_inodes;	/* active inode list */
	struct list_head	m_del_inodes;	/* inodes to reclaim */
	mutex_t			m_ilock;	/* inode list mutex */
	uint			m_ireclaims;	/* count of calls to reclaim*/
	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 */
#define m_dev		m_ddev_targp->pbr_dev
	__uint8_t		m_dircook_elog;	/* log d-cookie entry bits */
	__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 */
	__uint8_t		m_nreadaheads;	/* #readahead buffers */
	__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];	/* XFS_ALLOC_BLOCK_MAXRECS */
	uint			m_alloc_mnr[2];	/* XFS_ALLOC_BLOCK_MINRECS */
	uint			m_bmap_dmxr[2];	/* XFS_BMAP_BLOCK_DMAXRECS */
	uint			m_bmap_dmnr[2];	/* XFS_BMAP_BLOCK_DMINRECS */
	uint			m_inobt_mxr[2];	/* XFS_INOBT_BLOCK_MAXRECS */
	uint			m_inobt_mnr[2];	/* XFS_INOBT_BLOCK_MINRECS */
	uint			m_ag_maxlevels;	/* XFS_AG_MAXLEVELS */
	uint			m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
	uint			m_in_maxlevels;	/* XFS_IN_MAXLEVELS */
	struct xfs_perag	*m_perag;	/* per-ag accounting info */
	struct rw_semaphore	m_peraglock;	/* lock for m_perag (pointer) */
	sema_t			m_growlock;	/* growfs mutex */
	int			m_fixedfsid[2];	/* unchanged for life of FS */
	uint			m_dmevmask;	/* DMI events for this FS */
	uint			m_flags;	/* global mount flags */
	uint			m_attroffset;	/* inode attribute offset */
	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_litino;	/* size of inode union area */
	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 */
#if XFS_BIG_INUMS
	xfs_ino_t		m_inoadd;	/* add value for ino64_offset */
#endif
	int			m_dalign;	/* stripe unit */
	int			m_swidth;	/* stripe width */
	int			m_sinoalign;	/* stripe unit inode alignmnt */
	int			m_attr_magicpct;/* 37% of the blocksize */
	int			m_dir_magicpct;	/* 37% of the dir blocksize */
	__uint8_t		m_mk_sharedro;	/* mark shared ro on unmount */
	__uint8_t		m_inode_quiesce;/* call quiesce on new inodes.
						   field governed by m_ilock */
	__uint8_t		m_sectbb_log;	/* sectlog - BBSHIFT */
	__uint8_t		m_dirversion;	/* 1 or 2 */
	xfs_dirops_t		m_dirops;	/* table of dir funcs */
	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 */
	struct xfs_ioops	m_io_ops;	/* vector of I/O ops */
	atomic_t		m_active_trans;	/* number trans frozen */
} xfs_mount_t;

/*
 * Flags for m_flags.
 */
#define	XFS_MOUNT_WSYNC		0x00000001	/* for nfs - all metadata ops
						   must be synchronous except
						   for space allocations */
#define	XFS_MOUNT_INO64		0x00000002
			     /* 0x00000004	-- currently unused */
			     /* 0x00000008	-- currently unused */
#define XFS_MOUNT_FS_SHUTDOWN	0x00000010	/* atomic stop of all filesystem
						   operations, typically for
						   disk errors in metadata */
#define XFS_MOUNT_NOATIME	0x00000020	/* don't modify inode access
						   times on reads */
#define XFS_MOUNT_RETERR	0x00000040      /* return alignment errors to
						   user */
#define XFS_MOUNT_NOALIGN	0x00000080	/* turn off stripe alignment
						   allocations */
			     /* 0x00000100	-- currently unused */
			     /*	0x00000200	-- currently unused */
#define XFS_MOUNT_NORECOVERY	0x00000400	/* no recovery - dirty fs */
#define XFS_MOUNT_SHARED	0x00000800	/* shared mount */
#define XFS_MOUNT_DFLT_IOSIZE	0x00001000	/* set default i/o size */
#define XFS_MOUNT_OSYNCISOSYNC	0x00002000	/* o_sync is REALLY o_sync */
						/* osyncisdsync is now default*/
#define XFS_MOUNT_32BITINODES	0x00004000	/* do not create inodes above
						 * 32 bits in size */
#define XFS_MOUNT_32BITINOOPT	0x00008000	/* saved mount option state */
#define XFS_MOUNT_NOUUID	0x00010000	/* ignore uuid during mount */
418
#define XFS_MOUNT_BARRIER	0x00020000
L
Linus Torvalds 已提交
419 420 421 422 423 424 425 426 427 428 429 430 431
#define XFS_MOUNT_IDELETE	0x00040000	/* delete empty inode clusters*/
#define XFS_MOUNT_SWALLOC	0x00080000	/* turn on stripe width
						 * allocation */
#define XFS_MOUNT_IHASHSIZE	0x00100000	/* inode hash table size */
#define XFS_MOUNT_DIRSYNC	0x00200000	/* synchronous directory ops */

/*
 * Default minimum read and write sizes.
 */
#define XFS_READIO_LOG_LARGE	16
#define XFS_WRITEIO_LOG_LARGE	16

/*
432 433
 * Max and min values for mount-option defined I/O
 * preallocation sizes.
L
Linus Torvalds 已提交
434
 */
435
#define XFS_MAX_IO_LOG		30	/* 1G */
L
Linus Torvalds 已提交
436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
#define XFS_MIN_IO_LOG		PAGE_SHIFT

/*
 * Synchronous read and write sizes.  This should be
 * better for NFSv2 wsync filesystems.
 */
#define	XFS_WSYNC_READIO_LOG	15	/* 32K */
#define	XFS_WSYNC_WRITEIO_LOG	14	/* 16K */

#define XFS_MAXIOFFSET(mp)	((mp)->m_maxioffset)

#define XFS_FORCED_SHUTDOWN(mp)	((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
#define xfs_force_shutdown(m,f)	\
	VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__)

/*
 * Flags sent to xfs_force_shutdown.
 */
#define XFS_METADATA_IO_ERROR	0x1
#define XFS_LOG_IO_ERROR	0x2
#define XFS_FORCE_UMOUNT	0x4
#define XFS_CORRUPT_INCORE	0x8	/* Corrupt in-memory data structures */
#define XFS_SHUTDOWN_REMOTE_REQ 0x10	/* Shutdown came from remote cell */

/*
 * xflags for xfs_syncsub
 */
#define XFS_XSYNC_RELOC		0x01

/*
 * Flags for xfs_mountfs
 */
#define XFS_MFSI_SECOND		0x01	/* Secondary mount -- skip stuff */
#define XFS_MFSI_CLIENT		0x02	/* Is a client -- skip lots of stuff */
#define XFS_MFSI_NOUNLINK	0x08	/* Skip unlinked inode processing in */
					/* log recovery */
#define XFS_MFSI_NO_QUOTACHECK	0x10	/* Skip quotacheck processing */

/*
 * Macros for getting from mount to vfs and back.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MTOVFS)
struct vfs *xfs_mtovfs(xfs_mount_t *mp);
#define	XFS_MTOVFS(mp)		xfs_mtovfs(mp)
#else
#define	XFS_MTOVFS(mp)		(bhvtovfs(&(mp)->m_bhv))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BHVTOM)
xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp);
#define	XFS_BHVTOM(bdp)	xfs_bhvtom(bdp)
#else
#define XFS_BHVTOM(bdp)		((xfs_mount_t *)BHV_PDATA(bdp))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_VFSTOM)
xfs_mount_t *xfs_vfstom(vfs_t *vfs);
#define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
#else
#define XFS_VFSTOM(vfs)		\
	(XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops)))
#endif


/*
 * Moved here from xfs_ag.h to avoid reordering header files
 */

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGNO)
xfs_agnumber_t xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_DADDR_TO_AGNO(mp,d)         xfs_daddr_to_agno(mp,d)
#else

static inline xfs_agnumber_t XFS_DADDR_TO_AGNO(xfs_mount_t *mp, xfs_daddr_t d)
{
	d = XFS_BB_TO_FSBT(mp, d);
	do_div(d, mp->m_sb.sb_agblocks);
	return (xfs_agnumber_t) d;
}

#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGBNO)
xfs_agblock_t xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_DADDR_TO_AGBNO(mp,d)        xfs_daddr_to_agbno(mp,d)
#else

static inline xfs_agblock_t XFS_DADDR_TO_AGBNO(xfs_mount_t *mp, xfs_daddr_t d)
{
	d = XFS_BB_TO_FSBT(mp, d);
	return (xfs_agblock_t) do_div(d, mp->m_sb.sb_agblocks);
}

#endif

/*
 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
 */
typedef struct xfs_mod_sb {
	xfs_sb_field_t	msb_field;	/* Field to modify, see below */
	int		msb_delta;	/* Change to make to specified field */
} xfs_mod_sb_t;

#define	XFS_MOUNT_ILOCK(mp)	mutex_lock(&((mp)->m_ilock), PINOD)
#define	XFS_MOUNT_IUNLOCK(mp)	mutex_unlock(&((mp)->m_ilock))
#define	XFS_SB_LOCK(mp)		mutex_spinlock(&(mp)->m_sb_lock)
#define	XFS_SB_UNLOCK(mp,s)	mutex_spinunlock(&(mp)->m_sb_lock,(s))

extern xfs_mount_t *xfs_mount_init(void);
extern void	xfs_mod_sb(xfs_trans_t *, __int64_t);
extern void	xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
extern int	xfs_mountfs(struct vfs *, xfs_mount_t *mp, int);
545
extern void	xfs_mountfs_check_barriers(xfs_mount_t *mp);
L
Linus Torvalds 已提交
546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574

extern int	xfs_unmountfs(xfs_mount_t *, struct cred *);
extern void	xfs_unmountfs_close(xfs_mount_t *, struct cred *);
extern int	xfs_unmountfs_writesb(xfs_mount_t *);
extern int	xfs_unmount_flush(xfs_mount_t *, int);
extern int	xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
extern int	xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
			uint, int);
extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
extern int	xfs_readsb(xfs_mount_t *mp);
extern void	xfs_freesb(xfs_mount_t *);
extern void	xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
extern int	xfs_syncsub(xfs_mount_t *, int, int, int *);
extern xfs_agnumber_t	xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
extern void	xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);

extern struct vfsops xfs_vfsops;
extern struct vnodeops xfs_vnodeops;

extern struct xfs_dmops xfs_dmcore_stub;
extern struct xfs_qmops xfs_qmcore_stub;
extern struct xfs_ioops xfs_iocore_xfs;

extern int	xfs_init(void);
extern void	xfs_cleanup(void);

#endif	/* __KERNEL__ */

#endif	/* __XFS_MOUNT_H__ */