538 lines
20 KiB
C
538 lines
20 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_MOUNT_H__
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#define __XFS_MOUNT_H__
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typedef struct xfs_trans_reservations {
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uint tr_write; /* extent alloc trans */
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uint tr_itruncate; /* truncate trans */
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uint tr_rename; /* rename trans */
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uint tr_link; /* link trans */
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uint tr_remove; /* unlink trans */
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uint tr_symlink; /* symlink trans */
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uint tr_create; /* create trans */
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uint tr_mkdir; /* mkdir trans */
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uint tr_ifree; /* inode free trans */
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uint tr_ichange; /* inode update trans */
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uint tr_growdata; /* fs data section grow trans */
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uint tr_swrite; /* sync write inode trans */
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uint tr_addafork; /* cvt inode to attributed trans */
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uint tr_writeid; /* write setuid/setgid file */
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uint tr_attrinval; /* attr fork buffer invalidation */
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uint tr_attrset; /* set/create an attribute */
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uint tr_attrrm; /* remove an attribute */
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uint tr_clearagi; /* clear bad agi unlinked ino bucket */
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uint tr_growrtalloc; /* grow realtime allocations */
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uint tr_growrtzero; /* grow realtime zeroing */
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uint tr_growrtfree; /* grow realtime freeing */
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} xfs_trans_reservations_t;
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#ifndef __KERNEL__
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#define XFS_DADDR_TO_AGNO(mp,d) \
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((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
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#define XFS_DADDR_TO_AGBNO(mp,d) \
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((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
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#else /* __KERNEL__ */
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#include "xfs_sync.h"
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struct cred;
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struct log;
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struct xfs_mount_args;
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struct xfs_inode;
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struct xfs_bmbt_irec;
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struct xfs_bmap_free;
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struct xfs_extdelta;
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struct xfs_swapext;
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struct xfs_mru_cache;
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struct xfs_nameops;
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struct xfs_ail;
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/*
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* Prototypes and functions for the Data Migration subsystem.
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*/
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typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
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xfs_off_t, size_t, int, int *);
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typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
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typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
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typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
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struct xfs_inode *, dm_right_t,
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struct xfs_inode *, dm_right_t,
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const char *, const char *, mode_t, int, int);
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typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
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char *, char *);
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typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
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dm_right_t, mode_t, int, int);
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typedef struct xfs_dmops {
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xfs_send_data_t xfs_send_data;
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xfs_send_mmap_t xfs_send_mmap;
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xfs_send_destroy_t xfs_send_destroy;
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xfs_send_namesp_t xfs_send_namesp;
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xfs_send_mount_t xfs_send_mount;
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xfs_send_unmount_t xfs_send_unmount;
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} xfs_dmops_t;
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#define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
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(*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
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#define XFS_SEND_MMAP(mp, vma,fl) \
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(*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
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#define XFS_SEND_DESTROY(mp, ip,right) \
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(*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
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#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
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(*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
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#define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
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(*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl)
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#define XFS_SEND_MOUNT(mp,right,path,name) \
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(*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
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#define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
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(*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
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/*
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* Prototypes and functions for the Quota Management subsystem.
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*/
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struct xfs_dquot;
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struct xfs_dqtrxops;
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struct xfs_quotainfo;
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typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
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typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint);
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typedef void (*xfs_qmunmount_t)(struct xfs_mount *);
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typedef void (*xfs_qmdone_t)(struct xfs_mount *);
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typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
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typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
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typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
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typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
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typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
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struct xfs_inode *, uid_t, gid_t, prid_t, uint,
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struct xfs_dquot **, struct xfs_dquot **);
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typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
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struct xfs_dquot *, struct xfs_dquot *);
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typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
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typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
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struct xfs_trans *, struct xfs_inode *,
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struct xfs_dquot **, struct xfs_dquot *);
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typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
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struct xfs_dquot *, struct xfs_dquot *, uint);
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typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, struct kstatfs *);
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typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags);
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typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t);
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typedef struct xfs_qmops {
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xfs_qminit_t xfs_qminit;
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xfs_qmdone_t xfs_qmdone;
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xfs_qmmount_t xfs_qmmount;
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xfs_qmunmount_t xfs_qmunmount;
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xfs_dqrele_t xfs_dqrele;
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xfs_dqattach_t xfs_dqattach;
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xfs_dqdetach_t xfs_dqdetach;
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xfs_dqpurgeall_t xfs_dqpurgeall;
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xfs_dqvopalloc_t xfs_dqvopalloc;
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xfs_dqvopcreate_t xfs_dqvopcreate;
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xfs_dqvoprename_t xfs_dqvoprename;
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xfs_dqvopchown_t xfs_dqvopchown;
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xfs_dqvopchownresv_t xfs_dqvopchownresv;
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xfs_dqstatvfs_t xfs_dqstatvfs;
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xfs_dqsync_t xfs_dqsync;
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xfs_quotactl_t xfs_quotactl;
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struct xfs_dqtrxops *xfs_dqtrxops;
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} xfs_qmops_t;
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#define XFS_QM_INIT(mp, mnt, fl) \
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(*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
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#define XFS_QM_MOUNT(mp, mnt, fl) \
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(*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl)
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#define XFS_QM_UNMOUNT(mp) \
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(*(mp)->m_qm_ops->xfs_qmunmount)(mp)
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#define XFS_QM_DONE(mp) \
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(*(mp)->m_qm_ops->xfs_qmdone)(mp)
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#define XFS_QM_DQRELE(mp, dq) \
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(*(mp)->m_qm_ops->xfs_dqrele)(dq)
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#define XFS_QM_DQATTACH(mp, ip, fl) \
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(*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
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#define XFS_QM_DQDETACH(mp, ip) \
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(*(mp)->m_qm_ops->xfs_dqdetach)(ip)
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#define XFS_QM_DQPURGEALL(mp, fl) \
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(*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
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#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
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(*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
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#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
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(*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
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#define XFS_QM_DQVOPRENAME(mp, ip) \
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(*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
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#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
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(*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
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#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
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(*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
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#define XFS_QM_DQSTATVFS(ip, statp) \
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(*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
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#define XFS_QM_DQSYNC(mp, flags) \
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(*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
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#define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
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(*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
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#ifdef HAVE_PERCPU_SB
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/*
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* Valid per-cpu incore superblock counters. Note that if you add new counters,
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* you may need to define new counter disabled bit field descriptors as there
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* are more possible fields in the superblock that can fit in a bitfield on a
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* 32 bit platform. The XFS_SBS_* values for the current current counters just
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* fit.
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*/
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typedef struct xfs_icsb_cnts {
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uint64_t icsb_fdblocks;
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uint64_t icsb_ifree;
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uint64_t icsb_icount;
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unsigned long icsb_flags;
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} xfs_icsb_cnts_t;
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#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
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#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
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extern int xfs_icsb_init_counters(struct xfs_mount *);
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extern void xfs_icsb_reinit_counters(struct xfs_mount *);
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extern void xfs_icsb_destroy_counters(struct xfs_mount *);
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extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
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extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
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#else
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#define xfs_icsb_init_counters(mp) (0)
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#define xfs_icsb_destroy_counters(mp) do { } while (0)
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#define xfs_icsb_reinit_counters(mp) do { } while (0)
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#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
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#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
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#endif
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typedef struct xfs_mount {
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struct super_block *m_super;
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xfs_tid_t m_tid; /* next unused tid for fs */
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struct xfs_ail *m_ail; /* fs active log item list */
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xfs_sb_t m_sb; /* copy of fs superblock */
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spinlock_t m_sb_lock; /* sb counter lock */
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struct xfs_buf *m_sb_bp; /* buffer for superblock */
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char *m_fsname; /* filesystem name */
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int m_fsname_len; /* strlen of fs name */
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char *m_rtname; /* realtime device name */
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char *m_logname; /* external log device name */
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int m_bsize; /* fs logical block size */
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xfs_agnumber_t m_agfrotor; /* last ag where space found */
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xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
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spinlock_t m_agirotor_lock;/* .. and lock protecting it */
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xfs_agnumber_t m_maxagi; /* highest inode alloc group */
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uint m_readio_log; /* min read size log bytes */
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uint m_readio_blocks; /* min read size blocks */
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uint m_writeio_log; /* min write size log bytes */
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uint m_writeio_blocks; /* min write size blocks */
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struct log *m_log; /* log specific stuff */
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int m_logbufs; /* number of log buffers */
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int m_logbsize; /* size of each log buffer */
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uint m_rsumlevels; /* rt summary levels */
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uint m_rsumsize; /* size of rt summary, bytes */
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struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
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struct xfs_inode *m_rsumip; /* pointer to summary inode */
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struct xfs_inode *m_rootip; /* pointer to root directory */
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struct xfs_quotainfo *m_quotainfo; /* disk quota information */
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xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
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xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
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xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
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__uint8_t m_blkbit_log; /* blocklog + NBBY */
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__uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
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__uint8_t m_agno_log; /* log #ag's */
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__uint8_t m_agino_log; /* #bits for agino in inum */
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__uint16_t m_inode_cluster_size;/* min inode buf size */
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uint m_blockmask; /* sb_blocksize-1 */
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uint m_blockwsize; /* sb_blocksize in words */
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uint m_blockwmask; /* blockwsize-1 */
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uint m_alloc_mxr[2]; /* max alloc btree records */
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uint m_alloc_mnr[2]; /* min alloc btree records */
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uint m_bmap_dmxr[2]; /* max bmap btree records */
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uint m_bmap_dmnr[2]; /* min bmap btree records */
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uint m_inobt_mxr[2]; /* max inobt btree records */
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uint m_inobt_mnr[2]; /* min inobt btree records */
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uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
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uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
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uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
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struct xfs_perag *m_perag; /* per-ag accounting info */
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struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
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struct mutex m_growlock; /* growfs mutex */
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int m_fixedfsid[2]; /* unchanged for life of FS */
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uint m_dmevmask; /* DMI events for this FS */
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__uint64_t m_flags; /* global mount flags */
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uint m_attroffset; /* inode attribute offset */
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uint m_dir_node_ents; /* #entries in a dir danode */
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uint m_attr_node_ents; /* #entries in attr danode */
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int m_ialloc_inos; /* inodes in inode allocation */
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int m_ialloc_blks; /* blocks in inode allocation */
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int m_litino; /* size of inode union area */
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int m_inoalign_mask;/* mask sb_inoalignmt if used */
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uint m_qflags; /* quota status flags */
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xfs_trans_reservations_t m_reservations;/* precomputed res values */
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__uint64_t m_maxicount; /* maximum inode count */
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__uint64_t m_maxioffset; /* maximum inode offset */
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__uint64_t m_resblks; /* total reserved blocks */
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__uint64_t m_resblks_avail;/* available reserved blocks */
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#if XFS_BIG_INUMS
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xfs_ino_t m_inoadd; /* add value for ino64_offset */
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#endif
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int m_dalign; /* stripe unit */
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int m_swidth; /* stripe width */
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int m_sinoalign; /* stripe unit inode alignment */
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int m_attr_magicpct;/* 37% of the blocksize */
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int m_dir_magicpct; /* 37% of the dir blocksize */
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__uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
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const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
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int m_dirblksize; /* directory block sz--bytes */
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int m_dirblkfsbs; /* directory block sz--fsbs */
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xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
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xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
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xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
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uint m_chsize; /* size of next field */
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struct xfs_chash *m_chash; /* fs private inode per-cluster
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* hash table */
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struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
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struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
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atomic_t m_active_trans; /* number trans frozen */
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#ifdef HAVE_PERCPU_SB
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xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
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unsigned long m_icsb_counters; /* disabled per-cpu counters */
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struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
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struct mutex m_icsb_mutex; /* balancer sync lock */
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#endif
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struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
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struct task_struct *m_sync_task; /* generalised sync thread */
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bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
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struct list_head m_sync_list; /* sync thread work item list */
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spinlock_t m_sync_lock; /* work item list lock */
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int m_sync_seq; /* sync thread generation no. */
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wait_queue_head_t m_wait_single_sync_task;
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} xfs_mount_t;
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/*
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* Flags for m_flags.
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*/
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#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
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must be synchronous except
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for space allocations */
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#define XFS_MOUNT_INO64 (1ULL << 1)
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#define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
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#define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
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#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
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operations, typically for
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disk errors in metadata */
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#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
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user */
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#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
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allocations */
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#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
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#define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
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#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
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#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
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#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
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/* osyncisdsync is now default*/
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#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
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* 32 bits in size */
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#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
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#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
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#define XFS_MOUNT_BARRIER (1ULL << 17)
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#define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
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|
#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
|
|
* allocation */
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|
#define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
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|
#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
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|
#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
|
|
* I/O size in stat() */
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|
#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
|
|
counters */
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|
#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
|
|
allocator */
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|
#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
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|
|
|
|
|
/*
|
|
* Default minimum read and write sizes.
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|
*/
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|
#define XFS_READIO_LOG_LARGE 16
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|
#define XFS_WRITEIO_LOG_LARGE 16
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|
|
|
/*
|
|
* 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
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|
|
|
/*
|
|
* 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__)
|
|
|
|
#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
|
|
#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
|
|
#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
|
|
#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
|
|
#define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
|
|
#define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
|
|
|
|
#define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen)
|
|
#define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l))
|
|
|
|
/*
|
|
* 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_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_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
|
|
|
|
extern int xfs_dmops_get(struct xfs_mount *);
|
|
extern void xfs_dmops_put(struct xfs_mount *);
|
|
extern int xfs_qmops_get(struct xfs_mount *);
|
|
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__ */
|