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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_mount.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/xfs/xfs_mount.h')
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diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
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+++ b/fs/xfs/xfs_mount.h
@@ -0,0 +1,573 @@
+/*
+ * 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 *,
+ struct xfs_inode *, uid_t, gid_t, uint,
+ 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)
+#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, fl, dq1, dq2) \
+ (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, fl, dq1, dq2)
+#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)(
+ void *, loff_t, size_t, int,
+ struct xfs_bmbt_irec *, int *, int);
+typedef int (*xfs_iomap_write_delay_t)(
+ void *, loff_t, size_t, int,
+ struct xfs_bmbt_irec *, int *);
+typedef int (*xfs_iomap_write_allocate_t)(
+ void *, struct xfs_bmbt_irec *, int *);
+typedef int (*xfs_iomap_write_unwritten_t)(
+ void *, loff_t, size_t);
+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)
+#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, mval, nmap) \
+ (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
+ ((io)->io_obj, mval, nmap)
+#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 */
+#define XFS_MOUNT_NOLOGFLUSH 0x00020000
+#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
+
+/*
+ * Max and min values for UIO and mount-option defined I/O sizes;
+ * min value can't be less than a page. Currently unused.
+ */
+#define XFS_MAX_IO_LOG 16 /* 64K */
+#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);
+
+extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
+extern void xfs_unmountfs_wait(xfs_mount_t *);
+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__ */