diff options
Diffstat (limited to 'fs/xfs/xfs_inode.h')
| -rw-r--r-- | fs/xfs/xfs_inode.h | 636 |
1 files changed, 215 insertions, 421 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index bfcd72cbaee..f72bffa6726 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -18,269 +18,94 @@ #ifndef __XFS_INODE_H__ #define __XFS_INODE_H__ -struct xfs_dinode; -struct xfs_dinode_core; - - -/* - * Fork identifiers. - */ -#define XFS_DATA_FORK 0 -#define XFS_ATTR_FORK 1 - -/* - * The following xfs_ext_irec_t struct introduces a second (top) level - * to the in-core extent allocation scheme. These structs are allocated - * in a contiguous block, creating an indirection array where each entry - * (irec) contains a pointer to a buffer of in-core extent records which - * it manages. Each extent buffer is 4k in size, since 4k is the system - * page size on Linux i386 and systems with larger page sizes don't seem - * to gain much, if anything, by using their native page size as the - * extent buffer size. Also, using 4k extent buffers everywhere provides - * a consistent interface for CXFS across different platforms. - * - * There is currently no limit on the number of irec's (extent lists) - * allowed, so heavily fragmented files may require an indirection array - * which spans multiple system pages of memory. The number of extents - * which would require this amount of contiguous memory is very large - * and should not cause problems in the foreseeable future. However, - * if the memory needed for the contiguous array ever becomes a problem, - * it is possible that a third level of indirection may be required. - */ -typedef struct xfs_ext_irec { - xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ - xfs_extnum_t er_extoff; /* extent offset in file */ - xfs_extnum_t er_extcount; /* number of extents in page/block */ -} xfs_ext_irec_t; - -/* - * File incore extent information, present for each of data & attr forks. - */ -#define XFS_IEXT_BUFSZ 4096 -#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) -#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_host_t *if_extents;/* linear map file exts */ - xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ - char *if_data; /* inline file data */ - } if_u1; - union { - xfs_bmbt_rec_host_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 */ +#include "xfs_inode_buf.h" +#include "xfs_inode_fork.h" +#include "xfs_dinode.h" /* - * Per-fork incore inode flags. + * Kernel only inode definitions */ -#define XFS_IFINLINE 0x01 /* Inline data is read in */ -#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ -#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ -#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ - -/* - * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate(). - */ -#define XFS_IMAP_LOOKUP 0x1 -#define XFS_IMAP_BULKSTAT 0x2 - -#ifdef __KERNEL__ -struct bhv_desc; -struct cred; -struct ktrace; +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; - -/* - * This is the xfs inode cluster structure. This structure 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_icluster { - struct hlist_head icl_inodes; /* list of inodes on cluster */ - xfs_daddr_t icl_blkno; /* starting block number of - * the cluster */ - struct xfs_buf *icl_buf; /* the inode buffer */ - spinlock_t icl_lock; /* inode list lock */ -} xfs_icluster_t; - -/* - * 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 xfs_ictimestamp { - __int32_t t_sec; /* timestamp seconds */ - __int32_t t_nsec; /* timestamp nanoseconds */ -} xfs_ictimestamp_t; - -/* - * NOTE: This structure must be kept identical to struct xfs_dinode_core - * in xfs_dinode.h except for the endianess annotations. - */ -typedef struct xfs_icdinode { - __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ - __uint16_t di_mode; /* mode and type of file */ - __int8_t di_version; /* inode version */ - __int8_t di_format; /* format of di_c data */ - __uint16_t di_onlink; /* old number of links to file */ - __uint32_t di_uid; /* owner's user id */ - __uint32_t di_gid; /* owner's group id */ - __uint32_t di_nlink; /* number of links to file */ - __uint16_t di_projid; /* owner's project id */ - __uint8_t di_pad[8]; /* unused, zeroed space */ - __uint16_t di_flushiter; /* incremented on flush */ - xfs_ictimestamp_t di_atime; /* time last accessed */ - xfs_ictimestamp_t di_mtime; /* time last modified */ - xfs_ictimestamp_t di_ctime; /* time created/inode modified */ - xfs_fsize_t di_size; /* number of bytes in file */ - xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ - xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ - xfs_extnum_t di_nextents; /* number of extents in data fork */ - xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ - __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ - __int8_t di_aformat; /* format of attr fork's data */ - __uint32_t di_dmevmask; /* DMIG event mask */ - __uint16_t di_dmstate; /* DMIG state info */ - __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ - __uint32_t di_gen; /* generation number */ -} xfs_icdinode_t; - -typedef struct { - struct xfs_inode *ip_mnext; /* next inode in mount list */ - struct xfs_inode *ip_mprev; /* ptr to prev inode */ - struct xfs_mount *ip_mount; /* fs mount struct ptr */ -} xfs_iptr_t; - typedef struct xfs_inode { /* Inode linking and identification information. */ - struct xfs_inode *i_mnext; /* next inode in mount list */ - struct xfs_inode *i_mprev; /* ptr to prev inode */ struct xfs_mount *i_mount; /* fs mount struct ptr */ - struct list_head i_reclaim; /* reclaim list */ - bhv_vnode_t *i_vnode; /* vnode backpointer */ 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 */ spinlock_t i_flags_lock; /* inode i_flags lock */ -#ifdef HAVE_REFCACHE - struct xfs_inode **i_refcache; /* ptr to entry in ref cache */ - struct xfs_inode *i_release; /* inode to unref */ -#endif /* 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_icdinode_t i_d; /* most of ondisk inode */ - xfs_icluster_t *i_cluster; /* cluster list header */ - struct hlist_node i_cnode; /* cluster link node */ - - xfs_fsize_t i_size; /* in-memory size */ - xfs_fsize_t i_new_size; /* size when write completes */ - atomic_t i_iocount; /* outstanding I/O count */ - /* Trace buffers per inode. */ -#ifdef XFS_INODE_TRACE - struct ktrace *i_trace; /* general inode trace */ -#endif -#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 + + /* VFS inode */ + struct inode i_vnode; /* embedded VFS inode */ } xfs_inode_t; -#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ - (ip)->i_size : (ip)->i_d.di_size; +/* 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; +} + +/* + * If this I/O goes past the on-disk inode size update it unless it would + * be past the current in-core inode size. + */ +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 @@ -335,65 +160,100 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) spin_unlock(&ip->i_flags_lock); return ret; } -#endif /* __KERNEL__ */ +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; +} /* - * Fork handling. + * 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; +} -#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) -#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) - -#define XFS_IFORK_PTR(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - &(ip)->i_df : \ - (ip)->i_afp) -#define XFS_IFORK_DSIZE(ip) \ - (XFS_IFORK_Q(ip) ? \ - XFS_IFORK_BOFF(ip) : \ - XFS_LITINO((ip)->i_mount)) -#define XFS_IFORK_ASIZE(ip) \ - (XFS_IFORK_Q(ip) ? \ - XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \ - 0) -#define XFS_IFORK_SIZE(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - XFS_IFORK_DSIZE(ip) : \ - XFS_IFORK_ASIZE(ip)) -#define XFS_IFORK_FORMAT(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - (ip)->i_d.di_format : \ - (ip)->i_d.di_aformat) -#define XFS_IFORK_FMT_SET(ip,w,n) \ - ((w) == XFS_DATA_FORK ? \ - ((ip)->i_d.di_format = (n)) : \ - ((ip)->i_d.di_aformat = (n))) -#define XFS_IFORK_NEXTENTS(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - (ip)->i_d.di_nextents : \ - (ip)->i_d.di_anextents) -#define XFS_IFORK_NEXT_SET(ip,w,n) \ - ((w) == XFS_DATA_FORK ? \ - ((ip)->i_d.di_nextents = (n)) : \ - ((ip)->i_d.di_anextents = (n))) - -#ifdef __KERNEL__ +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_IFILESTREAM 0x0080 /* inode is in a filestream directory */ -#define XFS_IMODIFIED 0x0100 /* XFS inode state possibly differs */ - /* to the Linux inode state. */ -#define XFS_ITRUNCATED 0x0200 /* truncated down so flush-on-close */ +#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 */ + +/* + * 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_IRECLAIM_RESET_FLAGS \ + (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ + XFS_IDIRTY_RELEASE | XFS_ITRUNCATED) + +/* + * Synchronize processes attempting to flush the in-core inode back to disk. + */ + +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 inode locking. @@ -404,47 +264,49 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) #define XFS_IOLOCK_SHARED (1<<1) #define XFS_ILOCK_EXCL (1<<2) #define XFS_ILOCK_SHARED (1<<3) -#define XFS_IUNLOCK_NONOTIFY (1<<4) -/* #define XFS_IOLOCK_NESTED (1<<5) */ -#define XFS_EXTENT_TOKEN_RD (1<<6) -#define XFS_SIZE_TOKEN_RD (1<<7) -#define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD) -#define XFS_WILLLEND (1<<8) /* 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) -/* TODO:XFS_SIZE_TOKEN_WANT (1<<9) */ #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) + | 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" } + /* * Flags for lockdep annotations. * - * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes - * (ie directory operations that require locking a directory inode and - * an entry inode). The first inode gets locked with this flag so it - * gets a lockdep subclass of 1 and the second lock will have a lockdep - * subclass of 0. + * 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 2, the - * second lock will have a lockdep subclass of 3, and so on. It is + * 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_LOCK_PARENT 1 -#define XFS_LOCK_INUMORDER 2 +#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 @@ -454,24 +316,6 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) /* - * Flags for xfs_iflush() - */ -#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 - -/* - * Flags for xfs_itruncate_start(). - */ -#define XFS_ITRUNC_DEFINITE 0x1 -#define XFS_ITRUNC_MAYBE 0x2 - -#define XFS_ITOV(ip) ((ip)->i_vnode) -#define XFS_ITOV_NULL(ip) ((ip)->i_vnode) - -/* * 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. @@ -480,128 +324,78 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ ((pip)->i_d.di_mode & S_ISGID)) -/* - * Flags for xfs_iget() - */ -#define XFS_IGET_CREATE 0x1 -#define XFS_IGET_BULKSTAT 0x2 -/* - * xfs_iget.c prototypes. - */ -void xfs_ihash_init(struct xfs_mount *); -void xfs_ihash_free(struct xfs_mount *); -xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, - struct xfs_trans *); -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); +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); + 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); - -/* - * xfs_inode.c prototypes. - */ -int xfs_itobp(struct xfs_mount *, struct xfs_trans *, - xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **, - xfs_daddr_t, uint); -int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, - xfs_inode_t **, xfs_daddr_t, uint); -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_dinode_from_disk(struct xfs_icdinode *, - struct xfs_dinode_core *); -void xfs_dinode_to_disk(struct xfs_dinode_core *, - struct xfs_icdinode *); +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 **); uint xfs_ip2xflags(struct xfs_inode *); uint xfs_dic2xflags(struct xfs_dinode *); int xfs_ifree(struct xfs_trans *, xfs_inode_t *, struct xfs_bmap_free *); -int 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 *); -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); - -void xfs_synchronize_atime(xfs_inode_t *); -void xfs_mark_inode_dirty_sync(xfs_inode_t *); - -xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); -void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, - xfs_bmbt_irec_t *); -void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); -void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_realloc_direct(xfs_ifork_t *, int); -void xfs_iext_realloc_indirect(xfs_ifork_t *, int); -void xfs_iext_indirect_to_direct(xfs_ifork_t *); -void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); -void xfs_iext_inline_to_direct(xfs_ifork_t *, int); -void xfs_iext_destroy(xfs_ifork_t *); -xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); -xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); -xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); -void xfs_iext_irec_init(xfs_ifork_t *); -xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); -void xfs_iext_irec_remove(xfs_ifork_t *, int); -void xfs_iext_irec_compact(xfs_ifork_t *); -void xfs_iext_irec_compact_pages(xfs_ifork_t *); -void xfs_iext_irec_compact_full(xfs_ifork_t *); -void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); +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); + +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 *); + +/* 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); -extern struct kmem_zone *xfs_icluster_zone; -extern struct kmem_zone *xfs_ifork_zone; -extern struct kmem_zone *xfs_inode_zone; -extern struct kmem_zone *xfs_ili_zone; -#endif /* __KERNEL__ */ +#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__ */ |