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Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 573 |
1 files changed, 573 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h new file mode 100644 index 00000000000..5fc6201dd8e --- /dev/null +++ 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__ */ |