| /* |
| * 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__ */ |
| |
| 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; |
| |
| /* |
| * 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 char *, const 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_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_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ |
| (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,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_UNMOUNT(mp, ip,right,mode,rval,fl) \ |
| (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,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); |
| 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, prid_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 void (*xfs_dqstatvfs_t)(struct xfs_inode *, bhv_statvfs_t *); |
| typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags); |
| typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t); |
| |
| 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; |
| xfs_dqstatvfs_t xfs_dqstatvfs; |
| xfs_dqsync_t xfs_dqsync; |
| xfs_quotactl_t xfs_quotactl; |
| 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) \ |
| (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl) |
| #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, prid, fl, dq1, dq2) \ |
| (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, 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) |
| #define XFS_QM_DQSTATVFS(ip, statp) \ |
| (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp) |
| #define XFS_QM_DQSYNC(mp, flags) \ |
| (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags) |
| #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \ |
| (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr) |
| |
| #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_ail { |
| struct list_head xa_ail; |
| uint xa_gen; |
| struct task_struct *xa_task; |
| xfs_lsn_t xa_target; |
| } xfs_ail_t; |
| |
| typedef struct xfs_mount { |
| struct super_block *m_super; |
| xfs_tid_t m_tid; /* next unused tid for fs */ |
| spinlock_t m_ail_lock; /* fs AIL mutex */ |
| xfs_ail_t 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 */ |
| 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 */ |
| __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]; /* 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) */ |
| 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_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 alignment */ |
| 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 */ |
| 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 *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 */ |
| bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */ |
| struct list_head m_sync_list; /* sync thread work item list */ |
| spinlock_t m_sync_lock; /* work item list lock */ |
| int m_sync_seq; /* sync thread generation no. */ |
| wait_queue_head_t m_wait_single_sync_task; |
| } xfs_mount_t; |
| |
| /* |
| * Flags for m_flags. |
| */ |
| #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops |
| must be synchronous except |
| for space allocations */ |
| #define XFS_MOUNT_INO64 (1ULL << 1) |
| #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */ |
| #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) |
| #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem |
| operations, typically for |
| disk errors in metadata */ |
| #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to |
| user */ |
| #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment |
| allocations */ |
| #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ |
| #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */ |
| #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ |
| #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ |
| #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ |
| #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ |
| /* osyncisdsync is now default*/ |
| #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above |
| * 32 bits in size */ |
| #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */ |
| #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ |
| #define XFS_MOUNT_BARRIER (1ULL << 17) |
| #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/ |
| #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width |
| * allocation */ |
| #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */ |
| #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ |
| #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred |
| * I/O size in stat() */ |
| #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock |
| counters */ |
| #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams |
| allocator */ |
| #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */ |
| |
| |
| /* |
| * Default minimum read and write sizes. |
| */ |
| #define XFS_READIO_LOG_LARGE 16 |
| #define XFS_WRITEIO_LOG_LARGE 16 |
| |
| /* |
| * Max and min values for mount-option defined I/O |
| * preallocation sizes. |
| */ |
| #define XFS_MAX_IO_LOG 30 /* 1G */ |
| #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 */ |
| |
| /* |
| * Allow large block sizes to be reported to userspace programs if the |
| * "largeio" mount option is used. |
| * |
| * If compatibility mode is specified, simply return the basic unit of caching |
| * so that we don't get inefficient read/modify/write I/O from user apps. |
| * Otherwise.... |
| * |
| * If the underlying volume is a stripe, then return the stripe width in bytes |
| * as the recommended I/O size. It is not a stripe and we've set a default |
| * buffered I/O size, return that, otherwise return the compat default. |
| */ |
| static inline unsigned long |
| xfs_preferred_iosize(xfs_mount_t *mp) |
| { |
| if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) |
| return PAGE_CACHE_SIZE; |
| return (mp->m_swidth ? |
| (mp->m_swidth << mp->m_sb.sb_blocklog) : |
| ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? |
| (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : |
| PAGE_CACHE_SIZE)); |
| } |
| |
| #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) |
| |
| #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ |
| ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) |
| #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) |
| void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, |
| int lnnum); |
| #define xfs_force_shutdown(m,f) \ |
| xfs_do_force_shutdown(m, f, __FILE__, __LINE__) |
| |
| /* |
| * Flags for xfs_mountfs |
| */ |
| #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ |
| |
| #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) |
| static inline xfs_agnumber_t |
| xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) |
| { |
| xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
| do_div(ld, mp->m_sb.sb_agblocks); |
| return (xfs_agnumber_t) ld; |
| } |
| |
| #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) |
| static inline xfs_agblock_t |
| xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) |
| { |
| xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
| return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); |
| } |
| |
| /* |
| * perag get/put wrappers for eventual ref counting |
| */ |
| static inline xfs_perag_t * |
| xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino) |
| { |
| return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)]; |
| } |
| |
| static inline void |
| xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag) |
| { |
| /* nothing to see here, move along */ |
| } |
| |
| /* |
| * Per-cpu superblock locking functions |
| */ |
| #ifdef HAVE_PERCPU_SB |
| STATIC_INLINE void |
| xfs_icsb_lock(xfs_mount_t *mp) |
| { |
| mutex_lock(&mp->m_icsb_mutex); |
| } |
| |
| STATIC_INLINE void |
| xfs_icsb_unlock(xfs_mount_t *mp) |
| { |
| mutex_unlock(&mp->m_icsb_mutex); |
| } |
| #else |
| #define xfs_icsb_lock(mp) |
| #define xfs_icsb_unlock(mp) |
| #endif |
| |
| /* |
| * This structure is for use by the xfs_mod_incore_sb_batch() routine. |
| * xfs_growfs can specify a few fields which are more than int limit |
| */ |
| typedef struct xfs_mod_sb { |
| xfs_sb_field_t msb_field; /* Field to modify, see below */ |
| int64_t msb_delta; /* Change to make to specified field */ |
| } xfs_mod_sb_t; |
| |
| #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock)) |
| #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock)) |
| |
| extern int xfs_log_sbcount(xfs_mount_t *, uint); |
| extern int xfs_mountfs(xfs_mount_t *mp); |
| extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); |
| |
| extern void xfs_unmountfs(xfs_mount_t *); |
| 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, int64_t, int); |
| extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, |
| int64_t, 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 *, int); |
| extern void xfs_freesb(xfs_mount_t *); |
| extern int xfs_fs_writable(xfs_mount_t *); |
| extern int xfs_syncsub(xfs_mount_t *, int, int *); |
| extern int xfs_sync_inodes(xfs_mount_t *, int, int *); |
| extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); |
| |
| extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *); |
| extern void xfs_dmops_put(struct xfs_mount *); |
| extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *); |
| extern void xfs_qmops_put(struct xfs_mount *); |
| |
| extern struct xfs_dmops xfs_dmcore_xfs; |
| |
| #endif /* __KERNEL__ */ |
| |
| extern void xfs_mod_sb(struct xfs_trans *, __int64_t); |
| extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t); |
| extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); |
| extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); |
| |
| #endif /* __XFS_MOUNT_H__ */ |