X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Fxfs%2Flinux-2.6%2Fxfs_vfs.h;h=4da03a4e3520d97866d710f9977e95c0b2ae1961;hb=e6d5a11dad44b8ae18ca8fc4ecb72ccccfa0a2d2;hp=da255bdf526036995fcb50340c96f89aff8f81e6;hpb=c730f5b621afa33e9f4939da9078669162ebff4e;p=linux-2.6-omap-h63xx.git diff --git a/fs/xfs/linux-2.6/xfs_vfs.h b/fs/xfs/linux-2.6/xfs_vfs.h index da255bdf526..4da03a4e352 100644 --- a/fs/xfs/linux-2.6/xfs_vfs.h +++ b/fs/xfs/linux-2.6/xfs_vfs.h @@ -21,68 +21,25 @@ #include #include "xfs_fs.h" -struct bhv_vfs; -struct bhv_vnode; +struct inode; struct fid; struct cred; struct seq_file; struct super_block; +struct xfs_inode; +struct xfs_mount; struct xfs_mount_args; typedef struct kstatfs bhv_statvfs_t; typedef struct bhv_vfs_sync_work { struct list_head w_list; - struct bhv_vfs *w_vfs; + struct xfs_mount *w_mount; void *w_data; /* syncer routine argument */ - void (*w_syncer)(struct bhv_vfs *, void *); + void (*w_syncer)(struct xfs_mount *, void *); } bhv_vfs_sync_work_t; -typedef struct bhv_vfs { - u_int vfs_flag; /* flags */ - xfs_fsid_t vfs_fsid; /* file system ID */ - xfs_fsid_t *vfs_altfsid; /* An ID fixed for life of FS */ - bhv_head_t vfs_bh; /* head of vfs behavior chain */ - struct super_block *vfs_super; /* generic superblock pointer */ - struct task_struct *vfs_sync_task; /* generalised sync thread */ - bhv_vfs_sync_work_t vfs_sync_work; /* work item for VFS_SYNC */ - struct list_head vfs_sync_list; /* sync thread work item list */ - spinlock_t vfs_sync_lock; /* work item list lock */ - int vfs_sync_seq; /* sync thread generation no. */ - wait_queue_head_t vfs_wait_single_sync_task; -} bhv_vfs_t; - -#define bhvtovfs(bdp) ( (struct bhv_vfs *)BHV_VOBJ(bdp) ) -#define bhvtovfsops(bdp) ( (struct bhv_vfsops *)BHV_OPS(bdp) ) -#define VFS_BHVHEAD(vfs) ( &(vfs)->vfs_bh ) -#define VFS_REMOVEBHV(vfs, bdp) ( bhv_remove(VFS_BHVHEAD(vfs), bdp) ) - -#define VFS_POSITION_BASE BHV_POSITION_BASE /* chain bottom */ -#define VFS_POSITION_TOP BHV_POSITION_TOP /* chain top */ -#define VFS_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */ - -typedef enum { - VFS_BHV_UNKNOWN, /* not specified */ - VFS_BHV_XFS, /* xfs */ - VFS_BHV_DM, /* data migration */ - VFS_BHV_QM, /* quota manager */ - VFS_BHV_IO, /* IO path */ - VFS_BHV_END /* housekeeping end-of-range */ -} bhv_vfs_type_t; - -#define VFS_POSITION_XFS (BHV_POSITION_BASE) -#define VFS_POSITION_DM (VFS_POSITION_BASE+10) -#define VFS_POSITION_QM (VFS_POSITION_BASE+20) -#define VFS_POSITION_IO (VFS_POSITION_BASE+30) - -#define VFS_RDONLY 0x0001 /* read-only vfs */ -#define VFS_GRPID 0x0002 /* group-ID assigned from directory */ -#define VFS_DMI 0x0004 /* filesystem has the DMI enabled */ -/* ---- VFS_UMOUNT ---- 0x0008 -- unneeded, fixed via kthread APIs */ -#define VFS_32BITINODES 0x0010 /* do not use inums above 32 bits */ -#define VFS_END 0x0010 /* max flag */ - #define SYNC_ATTR 0x0001 /* sync attributes */ #define SYNC_CLOSE 0x0002 /* close file system down */ #define SYNC_DELWRI 0x0004 /* look at delayed writes */ @@ -91,7 +48,22 @@ typedef enum { #define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */ #define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */ #define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */ -#define SYNC_QUIESCE 0x0100 /* quiesce fileystem for a snapshot */ +#define SYNC_IOWAIT 0x0100 /* wait for all I/O to complete */ +#define SYNC_SUPER 0x0200 /* flush superblock to disk */ + +/* + * When remounting a filesystem read-only or freezing the filesystem, + * we have two phases to execute. This first phase is syncing the data + * before we quiesce the fielsystem, and the second is flushing all the + * inodes out after we've waited for all the transactions created by + * the first phase to complete. The second phase uses SYNC_INODE_QUIESCE + * to ensure that the inodes are written to their location on disk + * rather than just existing in transactions in the log. This means + * after a quiesce there is no log replay required to write the inodes + * to disk (this is the main difference between a sync and a quiesce). + */ +#define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT) +#define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT) #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */ #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */ @@ -100,118 +72,7 @@ typedef enum { #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */ #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */ -typedef int (*vfs_mount_t)(bhv_desc_t *, - struct xfs_mount_args *, struct cred *); -typedef int (*vfs_parseargs_t)(bhv_desc_t *, char *, - struct xfs_mount_args *, int); -typedef int (*vfs_showargs_t)(bhv_desc_t *, struct seq_file *); -typedef int (*vfs_unmount_t)(bhv_desc_t *, int, struct cred *); -typedef int (*vfs_mntupdate_t)(bhv_desc_t *, int *, - struct xfs_mount_args *); -typedef int (*vfs_root_t)(bhv_desc_t *, struct bhv_vnode **); -typedef int (*vfs_statvfs_t)(bhv_desc_t *, bhv_statvfs_t *, - struct bhv_vnode *); -typedef int (*vfs_sync_t)(bhv_desc_t *, int, struct cred *); -typedef int (*vfs_vget_t)(bhv_desc_t *, struct bhv_vnode **, struct fid *); -typedef int (*vfs_dmapiops_t)(bhv_desc_t *, caddr_t); -typedef int (*vfs_quotactl_t)(bhv_desc_t *, int, int, caddr_t); -typedef void (*vfs_init_vnode_t)(bhv_desc_t *, - struct bhv_vnode *, bhv_desc_t *, int); -typedef void (*vfs_force_shutdown_t)(bhv_desc_t *, int, char *, int); -typedef void (*vfs_freeze_t)(bhv_desc_t *); - -typedef struct bhv_vfsops { - bhv_position_t vf_position; /* behavior chain position */ - vfs_mount_t vfs_mount; /* mount file system */ - vfs_parseargs_t vfs_parseargs; /* parse mount options */ - vfs_showargs_t vfs_showargs; /* unparse mount options */ - vfs_unmount_t vfs_unmount; /* unmount file system */ - vfs_mntupdate_t vfs_mntupdate; /* update file system options */ - vfs_root_t vfs_root; /* get root vnode */ - vfs_statvfs_t vfs_statvfs; /* file system statistics */ - vfs_sync_t vfs_sync; /* flush files */ - vfs_vget_t vfs_vget; /* get vnode from fid */ - vfs_dmapiops_t vfs_dmapiops; /* data migration */ - vfs_quotactl_t vfs_quotactl; /* disk quota */ - vfs_init_vnode_t vfs_init_vnode; /* initialize a new vnode */ - vfs_force_shutdown_t vfs_force_shutdown; /* crash and burn */ - vfs_freeze_t vfs_freeze; /* freeze fs for snapshot */ -} bhv_vfsops_t; - -/* - * Virtual filesystem operations, operating from head bhv. - */ -#define VFSHEAD(v) ((v)->vfs_bh.bh_first) -#define bhv_vfs_mount(v, ma,cr) vfs_mount(VFSHEAD(v), ma,cr) -#define bhv_vfs_parseargs(v, o,ma,f) vfs_parseargs(VFSHEAD(v), o,ma,f) -#define bhv_vfs_showargs(v, m) vfs_showargs(VFSHEAD(v), m) -#define bhv_vfs_unmount(v, f,cr) vfs_unmount(VFSHEAD(v), f,cr) -#define bhv_vfs_mntupdate(v, fl,args) vfs_mntupdate(VFSHEAD(v), fl,args) -#define bhv_vfs_root(v, vpp) vfs_root(VFSHEAD(v), vpp) -#define bhv_vfs_statvfs(v, sp,vp) vfs_statvfs(VFSHEAD(v), sp,vp) -#define bhv_vfs_sync(v, flag,cr) vfs_sync(VFSHEAD(v), flag,cr) -#define bhv_vfs_vget(v, vpp,fidp) vfs_vget(VFSHEAD(v), vpp,fidp) -#define bhv_vfs_dmapiops(v, p) vfs_dmapiops(VFSHEAD(v), p) -#define bhv_vfs_quotactl(v, c,id,p) vfs_quotactl(VFSHEAD(v), c,id,p) -#define bhv_vfs_init_vnode(v, vp,b,ul) vfs_init_vnode(VFSHEAD(v), vp,b,ul) -#define bhv_vfs_force_shutdown(v,u,f,l) vfs_force_shutdown(VFSHEAD(v), u,f,l) -#define bhv_vfs_freeze(v) vfs_freeze(VFSHEAD(v)) - -/* - * Virtual filesystem operations, operating from next bhv. - */ -#define bhv_next_vfs_mount(b, ma,cr) vfs_mount(b, ma,cr) -#define bhv_next_vfs_parseargs(b, o,ma,f) vfs_parseargs(b, o,ma,f) -#define bhv_next_vfs_showargs(b, m) vfs_showargs(b, m) -#define bhv_next_vfs_unmount(b, f,cr) vfs_unmount(b, f,cr) -#define bhv_next_vfs_mntupdate(b, fl,args) vfs_mntupdate(b, fl, args) -#define bhv_next_vfs_root(b, vpp) vfs_root(b, vpp) -#define bhv_next_vfs_statvfs(b, sp,vp) vfs_statvfs(b, sp,vp) -#define bhv_next_vfs_sync(b, flag,cr) vfs_sync(b, flag,cr) -#define bhv_next_vfs_vget(b, vpp,fidp) vfs_vget(b, vpp,fidp) -#define bhv_next_vfs_dmapiops(b, p) vfs_dmapiops(b, p) -#define bhv_next_vfs_quotactl(b, c,id,p) vfs_quotactl(b, c,id,p) -#define bhv_next_vfs_init_vnode(b, vp,b2,ul) vfs_init_vnode(b, vp,b2,ul) -#define bhv_next_force_shutdown(b, fl,f,l) vfs_force_shutdown(b, fl,f,l) -#define bhv_next_vfs_freeze(b) vfs_freeze(b) - -extern int vfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *); -extern int vfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int); -extern int vfs_showargs(bhv_desc_t *, struct seq_file *); -extern int vfs_unmount(bhv_desc_t *, int, struct cred *); -extern int vfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *); -extern int vfs_root(bhv_desc_t *, struct bhv_vnode **); -extern int vfs_statvfs(bhv_desc_t *, bhv_statvfs_t *, struct bhv_vnode *); -extern int vfs_sync(bhv_desc_t *, int, struct cred *); -extern int vfs_vget(bhv_desc_t *, struct bhv_vnode **, struct fid *); -extern int vfs_dmapiops(bhv_desc_t *, caddr_t); -extern int vfs_quotactl(bhv_desc_t *, int, int, caddr_t); -extern void vfs_init_vnode(bhv_desc_t *, struct bhv_vnode *, bhv_desc_t *, int); -extern void vfs_force_shutdown(bhv_desc_t *, int, char *, int); -extern void vfs_freeze(bhv_desc_t *); - -#define vfs_test_for_freeze(vfs) ((vfs)->vfs_super->s_frozen) -#define vfs_wait_for_freeze(vfs,l) vfs_check_frozen((vfs)->vfs_super, (l)) - -typedef struct bhv_module_vfsops { - struct bhv_vfsops bhv_common; - void * bhv_custom; -} bhv_module_vfsops_t; - -#define vfs_bhv_lookup(v, id) (bhv_lookup_range(&(v)->vfs_bh, (id), (id))) -#define vfs_bhv_custom(b) (((bhv_module_vfsops_t*)BHV_OPS(b))->bhv_custom) -#define vfs_bhv_set_custom(b,o) ((b)->bhv_custom = (void *)(o)) -#define vfs_bhv_clr_custom(b) ((b)->bhv_custom = NULL) - -extern bhv_vfs_t *vfs_allocate(struct super_block *); -extern bhv_vfs_t *vfs_from_sb(struct super_block *); -extern void vfs_deallocate(bhv_vfs_t *); -extern void vfs_insertbhv(bhv_vfs_t *, bhv_desc_t *, bhv_vfsops_t *, void *); - -extern void vfs_insertops(bhv_vfs_t *, bhv_module_vfsops_t *); - -extern void bhv_insert_all_vfsops(struct bhv_vfs *); -extern void bhv_remove_all_vfsops(struct bhv_vfs *, int); -extern void bhv_remove_vfsops(struct bhv_vfs *, int); +#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)) #endif /* __XFS_VFS_H__ */