diff options
Diffstat (limited to 'fs/xfs/xfs_inode.h')
| -rw-r--r-- | fs/xfs/xfs_inode.h | 668 |
1 files changed, 302 insertions, 366 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 1cfbcf18ce8..f72bffa6726 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -18,448 +18,384 @@ #ifndef __XFS_INODE_H__ #define __XFS_INODE_H__ -/* - * Fork identifiers. - */ -#define XFS_DATA_FORK 0 -#define XFS_ATTR_FORK 1 - -/* - * File incore extent information, present for each of data & attr forks. - */ -#define XFS_INLINE_EXTS 2 -#define XFS_INLINE_DATA 32 -typedef struct xfs_ifork { - int if_bytes; /* bytes in if_u1 */ - int if_real_bytes; /* bytes allocated in if_u1 */ - xfs_bmbt_block_t *if_broot; /* file's incore btree root */ - short if_broot_bytes; /* bytes allocated for root */ - unsigned char if_flags; /* per-fork flags */ - unsigned char if_ext_max; /* max # of extent records */ - xfs_extnum_t if_lastex; /* last if_extents used */ - union { - xfs_bmbt_rec_t *if_extents; /* linear map file exts */ - char *if_data; /* inline file data */ - } if_u1; - union { - xfs_bmbt_rec_t if_inline_ext[XFS_INLINE_EXTS]; - /* very small file extents */ - char if_inline_data[XFS_INLINE_DATA]; - /* very small file data */ - xfs_dev_t if_rdev; /* dev number if special */ - uuid_t if_uuid; /* mount point value */ - } if_u2; -} xfs_ifork_t; - -/* - * Flags for xfs_ichgtime(). - */ -#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ -#define XFS_ICHGTIME_ACC 0x2 /* data fork access timestamp */ -#define XFS_ICHGTIME_CHG 0x4 /* inode field change timestamp */ - -/* - * Per-fork incore inode flags. - */ -#define XFS_IFINLINE 0x0001 /* Inline data is read in */ -#define XFS_IFEXTENTS 0x0002 /* All extent pointers are read in */ -#define XFS_IFBROOT 0x0004 /* i_broot points to the bmap b-tree root */ - -/* - * Flags for xfs_imap() and xfs_dilocate(). - */ -#define XFS_IMAP_LOOKUP 0x1 +#include "xfs_inode_buf.h" +#include "xfs_inode_fork.h" +#include "xfs_dinode.h" /* - * Maximum number of extent pointers in if_u1.if_extents. + * Kernel only inode definitions */ -#define XFS_MAX_INCORE_EXTENTS 32768 - - -#ifdef __KERNEL__ -struct bhv_desc; -struct cred; -struct ktrace; -struct vnode; +struct xfs_dinode; +struct xfs_inode; struct xfs_buf; struct xfs_bmap_free; struct xfs_bmbt_irec; -struct xfs_bmbt_block; -struct xfs_inode; struct xfs_inode_log_item; struct xfs_mount; struct xfs_trans; struct xfs_dquot; -#if defined(XFS_ILOCK_TRACE) -#define XFS_ILOCK_KTRACE_SIZE 32 -extern ktrace_t *xfs_ilock_trace_buf; -extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); -#else -#define xfs_ilock_trace(i,n,f,ra) -#endif - -typedef struct dm_attrs_s { - __uint32_t da_dmevmask; /* DMIG event mask */ - __uint16_t da_dmstate; /* DMIG state info */ - __uint16_t da_pad; /* DMIG extra padding */ -} dm_attrs_t; - -typedef struct xfs_iocore { - void *io_obj; /* pointer to container - * inode or dcxvn structure */ - struct xfs_mount *io_mount; /* fs mount struct ptr */ -#ifdef DEBUG - mrlock_t *io_lock; /* inode IO lock */ - mrlock_t *io_iolock; /* inode IO lock */ -#endif - - /* I/O state */ - xfs_fsize_t io_new_size; /* sz when write completes */ - - /* Miscellaneous state. */ - unsigned int io_flags; /* IO related flags */ - - /* DMAPI state */ - dm_attrs_t io_dmattrs; - -} xfs_iocore_t; - -#define io_dmevmask io_dmattrs.da_dmevmask -#define io_dmstate io_dmattrs.da_dmstate - -#define XFS_IO_INODE(io) ((xfs_inode_t *) ((io)->io_obj)) -#define XFS_IO_DCXVN(io) ((dcxvn_t *) ((io)->io_obj)) - -/* - * Flags in the flags field - */ - -#define XFS_IOCORE_RT 0x1 - -/* - * xfs_iocore prototypes - */ - -extern void xfs_iocore_inode_init(struct xfs_inode *); -extern void xfs_iocore_inode_reinit(struct xfs_inode *); - - -/* - * This is the type used in the xfs inode hash table. - * An array of these is allocated for each mounted - * file system to hash the inodes for that file system. - */ -typedef struct xfs_ihash { - struct xfs_inode *ih_next; - rwlock_t ih_lock; - uint ih_version; -} xfs_ihash_t; - -#define XFS_IHASH(mp,ino) ((mp)->m_ihash + (((uint)(ino)) % (mp)->m_ihsize)) - -/* - * This is the xfs inode cluster hash. This hash is used by xfs_iflush to - * find inodes that share a cluster and can be flushed to disk at the same - * time. - */ -typedef struct xfs_chashlist { - struct xfs_chashlist *chl_next; - struct xfs_inode *chl_ip; - xfs_daddr_t chl_blkno; /* starting block number of - * the cluster */ - struct xfs_buf *chl_buf; /* the inode buffer */ -} xfs_chashlist_t; - -typedef struct xfs_chash { - xfs_chashlist_t *ch_list; - lock_t ch_lock; -} xfs_chash_t; - -#define XFS_CHASH(mp,blk) ((mp)->m_chash + (((uint)blk) % (mp)->m_chsize)) - - -/* - * This is the xfs in-core inode structure. - * Most of the on-disk inode is embedded in the i_d field. - * - * The extent pointers/inline file space, however, are managed - * separately. The memory for this information is pointed to by - * the if_u1 unions depending on the type of the data. - * This is used to linearize the array of extents for fast in-core - * access. This is used until the file's number of extents - * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers - * are accessed through the buffer cache. - * - * Other state kept in the in-core inode is used for identification, - * locking, transactional updating, etc of the inode. - * - * Generally, we do not want to hold the i_rlock while holding the - * i_ilock. Hierarchy is i_iolock followed by i_rlock. - * - * xfs_iptr_t contains all the inode fields upto and including the - * i_mnext and i_mprev fields, it is used as a marker in the inode - * chain off the mount structure by xfs_sync calls. - */ - -typedef struct { - struct xfs_ihash *ip_hash; /* pointer to hash header */ - struct xfs_inode *ip_next; /* inode hash link forw */ - struct xfs_inode *ip_mnext; /* next inode in mount list */ - struct xfs_inode *ip_mprev; /* ptr to prev inode */ - struct xfs_inode **ip_prevp; /* ptr to prev i_next */ - struct xfs_mount *ip_mount; /* fs mount struct ptr */ -} xfs_iptr_t; - typedef struct xfs_inode { /* Inode linking and identification information. */ - struct xfs_ihash *i_hash; /* pointer to hash header */ - struct xfs_inode *i_next; /* inode hash link forw */ - struct xfs_inode *i_mnext; /* next inode in mount list */ - struct xfs_inode *i_mprev; /* ptr to prev inode */ - struct xfs_inode **i_prevp; /* ptr to prev i_next */ struct xfs_mount *i_mount; /* fs mount struct ptr */ - struct list_head i_reclaim; /* reclaim list */ - struct bhv_desc i_bhv_desc; /* inode behavior descriptor*/ struct xfs_dquot *i_udquot; /* user dquot */ struct xfs_dquot *i_gdquot; /* group dquot */ + struct xfs_dquot *i_pdquot; /* project dquot */ /* Inode location stuff */ xfs_ino_t i_ino; /* inode number (agno/agino)*/ - xfs_daddr_t i_blkno; /* blkno of inode buffer */ - ushort i_len; /* len of inode buffer */ - ushort i_boffset; /* off of inode in buffer */ + struct xfs_imap i_imap; /* location for xfs_imap() */ /* Extent information. */ xfs_ifork_t *i_afp; /* attribute fork pointer */ xfs_ifork_t i_df; /* data fork */ + /* operations vectors */ + const struct xfs_dir_ops *d_ops; /* directory ops vector */ + /* Transaction and locking information. */ - struct xfs_trans *i_transp; /* ptr to owning transaction*/ struct xfs_inode_log_item *i_itemp; /* logging information */ mrlock_t i_lock; /* inode lock */ mrlock_t i_iolock; /* inode IO lock */ - sema_t i_flock; /* inode flush lock */ atomic_t i_pincount; /* inode pin count */ - wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ -#ifdef HAVE_REFCACHE - struct xfs_inode **i_refcache; /* ptr to entry in ref cache */ - struct xfs_inode *i_release; /* inode to unref */ -#endif - /* I/O state */ - xfs_iocore_t i_iocore; /* I/O core */ - + spinlock_t i_flags_lock; /* inode i_flags lock */ /* Miscellaneous state. */ - unsigned short i_flags; /* see defined flags below */ - unsigned char i_update_core; /* timestamps/size is dirty */ - unsigned char i_update_size; /* di_size field is dirty */ - unsigned int i_gen; /* generation count */ + unsigned long i_flags; /* see defined flags below */ unsigned int i_delayed_blks; /* count of delay alloc blks */ - xfs_dinode_core_t i_d; /* most of ondisk inode */ - xfs_chashlist_t *i_chash; /* cluster hash list header */ - struct xfs_inode *i_cnext; /* cluster hash link forward */ - struct xfs_inode *i_cprev; /* cluster hash link backward */ - - /* Trace buffers per inode. */ -#ifdef XFS_BMAP_TRACE - struct ktrace *i_xtrace; /* inode extent list trace */ -#endif -#ifdef XFS_BMBT_TRACE - struct ktrace *i_btrace; /* inode bmap btree trace */ -#endif -#ifdef XFS_RW_TRACE - struct ktrace *i_rwtrace; /* inode read/write trace */ -#endif -#ifdef XFS_ILOCK_TRACE - struct ktrace *i_lock_trace; /* inode lock/unlock trace */ -#endif -#ifdef XFS_DIR2_TRACE - struct ktrace *i_dir_trace; /* inode directory trace */ -#endif + xfs_icdinode_t i_d; /* most of ondisk inode */ + + /* VFS inode */ + struct inode i_vnode; /* embedded VFS inode */ } xfs_inode_t; -#endif /* __KERNEL__ */ +/* Convert from vfs inode to xfs inode */ +static inline struct xfs_inode *XFS_I(struct inode *inode) +{ + return container_of(inode, struct xfs_inode, i_vnode); +} + +/* convert from xfs inode to vfs inode */ +static inline struct inode *VFS_I(struct xfs_inode *ip) +{ + return &ip->i_vnode; +} +/* + * For regular files we only update the on-disk filesize when actually + * writing data back to disk. Until then only the copy in the VFS inode + * is uptodate. + */ +static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) +{ + if (S_ISREG(ip->i_d.di_mode)) + return i_size_read(VFS_I(ip)); + return ip->i_d.di_size; +} /* - * Fork handling. + * If this I/O goes past the on-disk inode size update it unless it would + * be past the current in-core inode size. */ -#define XFS_IFORK_PTR(ip,w) \ - ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp) -#define XFS_IFORK_Q(ip) XFS_CFORK_Q(&(ip)->i_d) -#define XFS_IFORK_DSIZE(ip) XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount) -#define XFS_IFORK_ASIZE(ip) XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount) -#define XFS_IFORK_SIZE(ip,w) XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w) -#define XFS_IFORK_FORMAT(ip,w) XFS_CFORK_FORMAT(&ip->i_d, w) -#define XFS_IFORK_FMT_SET(ip,w,n) XFS_CFORK_FMT_SET(&ip->i_d, w, n) -#define XFS_IFORK_NEXTENTS(ip,w) XFS_CFORK_NEXTENTS(&ip->i_d, w) -#define XFS_IFORK_NEXT_SET(ip,w,n) XFS_CFORK_NEXT_SET(&ip->i_d, w, n) +static inline xfs_fsize_t +xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) +{ + xfs_fsize_t i_size = i_size_read(VFS_I(ip)); + + if (new_size > i_size) + new_size = i_size; + return new_size > ip->i_d.di_size ? new_size : 0; +} +/* + * i_flags helper functions + */ +static inline void +__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) +{ + ip->i_flags |= flags; +} + +static inline void +xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) +{ + spin_lock(&ip->i_flags_lock); + __xfs_iflags_set(ip, flags); + spin_unlock(&ip->i_flags_lock); +} + +static inline void +xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) +{ + spin_lock(&ip->i_flags_lock); + ip->i_flags &= ~flags; + spin_unlock(&ip->i_flags_lock); +} + +static inline int +__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) +{ + return (ip->i_flags & flags); +} + +static inline int +xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) +{ + int ret; + spin_lock(&ip->i_flags_lock); + ret = __xfs_iflags_test(ip, flags); + spin_unlock(&ip->i_flags_lock); + return ret; +} + +static inline int +xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) +{ + int ret; + + spin_lock(&ip->i_flags_lock); + ret = ip->i_flags & flags; + if (ret) + ip->i_flags &= ~flags; + spin_unlock(&ip->i_flags_lock); + return ret; +} + +static inline int +xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) +{ + int ret; + + spin_lock(&ip->i_flags_lock); + ret = ip->i_flags & flags; + if (!ret) + ip->i_flags |= flags; + spin_unlock(&ip->i_flags_lock); + return ret; +} -#ifdef __KERNEL__ +/* + * Project quota id helpers (previously projid was 16bit only + * and using two 16bit values to hold new 32bit projid was chosen + * to retain compatibility with "old" filesystems). + */ +static inline prid_t +xfs_get_projid(struct xfs_inode *ip) +{ + return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; +} + +static inline void +xfs_set_projid(struct xfs_inode *ip, + prid_t projid) +{ + ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16); + ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff); +} + +static inline prid_t +xfs_get_initial_prid(struct xfs_inode *dp) +{ + if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) + return xfs_get_projid(dp); + + return XFS_PROJID_DEFAULT; +} /* * In-core inode flags. */ -#define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */ -#define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */ -#define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */ -#define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */ -#define XFS_ISTALE 0x0010 /* inode has been staled */ -#define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */ -#define XFS_INEW 0x0040 +#define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ +#define XFS_ISTALE (1 << 1) /* inode has been staled */ +#define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ +#define XFS_INEW (1 << 3) /* inode has just been allocated */ +#define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ +#define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ +#define __XFS_IFLOCK_BIT 7 /* inode is being flushed right now */ +#define XFS_IFLOCK (1 << __XFS_IFLOCK_BIT) +#define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ +#define XFS_IPINNED (1 << __XFS_IPINNED_BIT) +#define XFS_IDONTCACHE (1 << 9) /* don't cache the inode long term */ /* - * Flags for inode locking. + * Per-lifetime flags need to be reset when re-using a reclaimable inode during + * inode lookup. This prevents unintended behaviour on the new inode from + * ocurring. */ -#define XFS_IOLOCK_EXCL 0x001 -#define XFS_IOLOCK_SHARED 0x002 -#define XFS_ILOCK_EXCL 0x004 -#define XFS_ILOCK_SHARED 0x008 -#define XFS_IUNLOCK_NONOTIFY 0x010 -/* XFS_IOLOCK_NESTED 0x020 */ -#define XFS_EXTENT_TOKEN_RD 0x040 -#define XFS_SIZE_TOKEN_RD 0x080 -#define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD) -#define XFS_WILLLEND 0x100 /* Always acquire tokens for lending */ -#define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND) -#define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND) -#define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND) -/* XFS_SIZE_TOKEN_WANT 0x200 */ - -#define XFS_LOCK_MASK \ - (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED | XFS_ILOCK_EXCL | \ - XFS_ILOCK_SHARED | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD | \ - XFS_WILLLEND) +#define XFS_IRECLAIM_RESET_FLAGS \ + (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ + XFS_IDIRTY_RELEASE | XFS_ITRUNCATED) /* - * Flags for xfs_iflush() + * Synchronize processes attempting to flush the in-core inode back to disk. */ -#define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 -#define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 -#define XFS_IFLUSH_SYNC 3 -#define XFS_IFLUSH_ASYNC 4 -#define XFS_IFLUSH_DELWRI 5 + +extern void __xfs_iflock(struct xfs_inode *ip); + +static inline int xfs_iflock_nowait(struct xfs_inode *ip) +{ + return !xfs_iflags_test_and_set(ip, XFS_IFLOCK); +} + +static inline void xfs_iflock(struct xfs_inode *ip) +{ + if (!xfs_iflock_nowait(ip)) + __xfs_iflock(ip); +} + +static inline void xfs_ifunlock(struct xfs_inode *ip) +{ + xfs_iflags_clear(ip, XFS_IFLOCK); + smp_mb(); + wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT); +} + +static inline int xfs_isiflocked(struct xfs_inode *ip) +{ + return xfs_iflags_test(ip, XFS_IFLOCK); +} /* - * Flags for xfs_itruncate_start(). + * Flags for inode locking. + * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) + * 1<<16 - 1<<32-1 -- lockdep annotation (integers) */ -#define XFS_ITRUNC_DEFINITE 0x1 -#define XFS_ITRUNC_MAYBE 0x2 +#define XFS_IOLOCK_EXCL (1<<0) +#define XFS_IOLOCK_SHARED (1<<1) +#define XFS_ILOCK_EXCL (1<<2) +#define XFS_ILOCK_SHARED (1<<3) + +#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ + | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) + +#define XFS_LOCK_FLAGS \ + { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ + { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ + { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ + { XFS_ILOCK_SHARED, "ILOCK_SHARED" } -#define XFS_ITOV(ip) BHV_TO_VNODE(XFS_ITOBHV(ip)) -#define XFS_ITOV_NULL(ip) BHV_TO_VNODE_NULL(XFS_ITOBHV(ip)) -#define XFS_ITOBHV(ip) ((struct bhv_desc *)(&((ip)->i_bhv_desc))) -#define XFS_BHVTOI(bhvp) ((xfs_inode_t *)((char *)(bhvp) - \ - (char *)&(((xfs_inode_t *)0)->i_bhv_desc))) -#define BHV_IS_XFS(bdp) (BHV_OPS(bdp) == &xfs_vnodeops) /* - * For multiple groups support: if S_ISGID bit is set in the parent - * directory, group of new file is set to that of the parent, and - * new subdirectory gets S_ISGID bit from parent. + * Flags for lockdep annotations. + * + * XFS_LOCK_PARENT - for directory operations that require locking a + * parent directory inode and a child entry inode. The parent gets locked + * with this flag so it gets a lockdep subclass of 1 and the child entry + * lock will have a lockdep subclass of 0. + * + * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary + * inodes do not participate in the normal lock order, and thus have their + * own subclasses. + * + * XFS_LOCK_INUMORDER - for locking several inodes at the some time + * with xfs_lock_inodes(). This flag is used as the starting subclass + * and each subsequent lock acquired will increment the subclass by one. + * So the first lock acquired will have a lockdep subclass of 4, the + * second lock will have a lockdep subclass of 5, and so on. It is + * the responsibility of the class builder to shift this to the correct + * portion of the lock_mode lockdep mask. */ -#define XFS_INHERIT_GID(pip, vfsp) \ - (((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & S_ISGID)) +#define XFS_LOCK_PARENT 1 +#define XFS_LOCK_RTBITMAP 2 +#define XFS_LOCK_RTSUM 3 +#define XFS_LOCK_INUMORDER 4 + +#define XFS_IOLOCK_SHIFT 16 +#define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) + +#define XFS_ILOCK_SHIFT 24 +#define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) +#define XFS_ILOCK_RTBITMAP (XFS_LOCK_RTBITMAP << XFS_ILOCK_SHIFT) +#define XFS_ILOCK_RTSUM (XFS_LOCK_RTSUM << XFS_ILOCK_SHIFT) + +#define XFS_IOLOCK_DEP_MASK 0x00ff0000 +#define XFS_ILOCK_DEP_MASK 0xff000000 +#define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) + +#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) +#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) /* - * xfs_iget.c prototypes. + * For multiple groups support: if S_ISGID bit is set in the parent + * directory, group of new file is set to that of the parent, and + * new subdirectory gets S_ISGID bit from parent. */ +#define XFS_INHERIT_GID(pip) \ + (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ + ((pip)->i_d.di_mode & S_ISGID)) + + +int xfs_release(struct xfs_inode *ip); +void xfs_inactive(struct xfs_inode *ip); +int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, + struct xfs_inode **ipp, struct xfs_name *ci_name); +int xfs_create(struct xfs_inode *dp, struct xfs_name *name, + umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp); +int xfs_create_tmpfile(struct xfs_inode *dp, struct dentry *dentry, + umode_t mode, struct xfs_inode **ipp); +int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, + struct xfs_inode *ip); +int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, + struct xfs_name *target_name); +int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, + struct xfs_inode *src_ip, struct xfs_inode *target_dp, + struct xfs_name *target_name, + struct xfs_inode *target_ip); -#define IGET_CREATE 1 - -void xfs_ihash_init(struct xfs_mount *); -void xfs_ihash_free(struct xfs_mount *); -void xfs_chash_init(struct xfs_mount *); -void xfs_chash_free(struct xfs_mount *); -xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, - struct xfs_trans *); -void xfs_inode_lock_init(xfs_inode_t *, struct vnode *); -int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, - uint, uint, xfs_inode_t **, xfs_daddr_t); -void xfs_iput(xfs_inode_t *, uint); -void xfs_iput_new(xfs_inode_t *, uint); void xfs_ilock(xfs_inode_t *, uint); int xfs_ilock_nowait(xfs_inode_t *, uint); void xfs_iunlock(xfs_inode_t *, uint); void xfs_ilock_demote(xfs_inode_t *, uint); -void xfs_iflock(xfs_inode_t *); -int xfs_iflock_nowait(xfs_inode_t *); -uint xfs_ilock_map_shared(xfs_inode_t *); -void xfs_iunlock_map_shared(xfs_inode_t *, uint); -void xfs_ifunlock(xfs_inode_t *); -void xfs_ireclaim(xfs_inode_t *); -int xfs_finish_reclaim(xfs_inode_t *, int, int); -int xfs_finish_reclaim_all(struct xfs_mount *, int); +int xfs_isilocked(xfs_inode_t *, uint); +uint xfs_ilock_data_map_shared(struct xfs_inode *); +uint xfs_ilock_attr_map_shared(struct xfs_inode *); +int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, umode_t, + xfs_nlink_t, xfs_dev_t, prid_t, int, + struct xfs_buf **, xfs_inode_t **); -/* - * xfs_inode.c prototypes. - */ -int xfs_itobp(struct xfs_mount *, struct xfs_trans *, - xfs_inode_t *, xfs_dinode_t **, struct xfs_buf **, - xfs_daddr_t); -int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, - xfs_inode_t **, xfs_daddr_t); -int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int); -int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, - xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, - int, struct xfs_buf **, boolean_t *, xfs_inode_t **); -void xfs_xlate_dinode_core(xfs_caddr_t, struct xfs_dinode_core *, - int); uint xfs_ip2xflags(struct xfs_inode *); -uint xfs_dic2xflags(struct xfs_dinode_core *); +uint xfs_dic2xflags(struct xfs_dinode *); int xfs_ifree(struct xfs_trans *, xfs_inode_t *, struct xfs_bmap_free *); -void xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); -int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, - xfs_fsize_t, int, int); +int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, + int, xfs_fsize_t); int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); -int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *); -void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *, - xfs_fsize_t, int); - -void xfs_idestroy_fork(xfs_inode_t *, int); -void xfs_idestroy(xfs_inode_t *); -void xfs_idata_realloc(xfs_inode_t *, int, int); -void xfs_iextract(xfs_inode_t *); + void xfs_iext_realloc(xfs_inode_t *, int, int); -void xfs_iroot_realloc(xfs_inode_t *, int, int); -void xfs_ipin(xfs_inode_t *); -void xfs_iunpin(xfs_inode_t *); -int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int); -int xfs_iflush(xfs_inode_t *, uint); -void xfs_iflush_all(struct xfs_mount *); -int xfs_iaccess(xfs_inode_t *, mode_t, cred_t *); -uint xfs_iroundup(uint); -void xfs_ichgtime(xfs_inode_t *, int); -xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); -void xfs_lock_inodes(xfs_inode_t **, int, int, uint); - -xfs_inode_t *xfs_vtoi(struct vnode *vp); - -void xfs_synchronize_atime(xfs_inode_t *); +void xfs_iunpin_wait(xfs_inode_t *); #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) -#ifdef DEBUG -void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t); -#else /* DEBUG */ -#define xfs_isize_check(mp, ip, isize) -#endif /* DEBUG */ +int xfs_iflush(struct xfs_inode *, struct xfs_buf **); +void xfs_lock_inodes(xfs_inode_t **, int, uint); +void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); -#if defined(DEBUG) -void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); -#else -#define xfs_inobp_check(mp, bp) -#endif /* DEBUG */ +xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); -extern struct kmem_zone *xfs_chashlist_zone; -extern struct kmem_zone *xfs_ifork_zone; -extern struct kmem_zone *xfs_inode_zone; -extern struct kmem_zone *xfs_ili_zone; -extern struct vnodeops xfs_vnodeops; +int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, + xfs_nlink_t, xfs_dev_t, prid_t, int, + struct xfs_inode **, int *); +int xfs_droplink(struct xfs_trans *, struct xfs_inode *); +int xfs_bumplink(struct xfs_trans *, struct xfs_inode *); -#endif /* __KERNEL__ */ +/* from xfs_file.c */ +int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t); +int xfs_iozero(struct xfs_inode *, loff_t, size_t); + + +#define IHOLD(ip) \ +do { \ + ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ + ihold(VFS_I(ip)); \ + trace_xfs_ihold(ip, _THIS_IP_); \ +} while (0) + +#define IRELE(ip) \ +do { \ + trace_xfs_irele(ip, _THIS_IP_); \ + iput(VFS_I(ip)); \ +} while (0) + +extern struct kmem_zone *xfs_inode_zone; #endif /* __XFS_INODE_H__ */ |