mirror of https://gitee.com/openkylin/linux.git
653 lines
21 KiB
C
653 lines
21 KiB
C
/*
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* Copyright (c) 2000-2003,2005 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_INODE_H__
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#define __XFS_INODE_H__
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struct posix_acl;
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struct xfs_dinode;
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struct xfs_inode;
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/*
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* Fork identifiers.
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*/
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#define XFS_DATA_FORK 0
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#define XFS_ATTR_FORK 1
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/*
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* The following xfs_ext_irec_t struct introduces a second (top) level
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* to the in-core extent allocation scheme. These structs are allocated
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* in a contiguous block, creating an indirection array where each entry
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* (irec) contains a pointer to a buffer of in-core extent records which
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* it manages. Each extent buffer is 4k in size, since 4k is the system
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* page size on Linux i386 and systems with larger page sizes don't seem
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* to gain much, if anything, by using their native page size as the
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* extent buffer size. Also, using 4k extent buffers everywhere provides
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* a consistent interface for CXFS across different platforms.
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*
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* There is currently no limit on the number of irec's (extent lists)
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* allowed, so heavily fragmented files may require an indirection array
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* which spans multiple system pages of memory. The number of extents
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* which would require this amount of contiguous memory is very large
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* and should not cause problems in the foreseeable future. However,
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* if the memory needed for the contiguous array ever becomes a problem,
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* it is possible that a third level of indirection may be required.
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*/
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typedef struct xfs_ext_irec {
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xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */
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xfs_extnum_t er_extoff; /* extent offset in file */
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xfs_extnum_t er_extcount; /* number of extents in page/block */
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} xfs_ext_irec_t;
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/*
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* File incore extent information, present for each of data & attr forks.
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*/
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#define XFS_IEXT_BUFSZ 4096
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#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
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#define XFS_INLINE_EXTS 2
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#define XFS_INLINE_DATA 32
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typedef struct xfs_ifork {
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int if_bytes; /* bytes in if_u1 */
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int if_real_bytes; /* bytes allocated in if_u1 */
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struct xfs_btree_block *if_broot; /* file's incore btree root */
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short if_broot_bytes; /* bytes allocated for root */
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unsigned char if_flags; /* per-fork flags */
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unsigned char if_ext_max; /* max # of extent records */
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xfs_extnum_t if_lastex; /* last if_extents used */
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union {
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xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
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xfs_ext_irec_t *if_ext_irec; /* irec map file exts */
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char *if_data; /* inline file data */
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} if_u1;
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union {
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xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS];
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/* very small file extents */
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char if_inline_data[XFS_INLINE_DATA];
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/* very small file data */
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xfs_dev_t if_rdev; /* dev number if special */
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uuid_t if_uuid; /* mount point value */
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} if_u2;
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} xfs_ifork_t;
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/*
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* Inode location information. Stored in the inode and passed to
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* xfs_imap_to_bp() to get a buffer and dinode for a given inode.
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*/
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struct xfs_imap {
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xfs_daddr_t im_blkno; /* starting BB of inode chunk */
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ushort im_len; /* length in BBs of inode chunk */
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ushort im_boffset; /* inode offset in block in bytes */
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};
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/*
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* This is the xfs in-core inode structure.
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* Most of the on-disk inode is embedded in the i_d field.
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*
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* The extent pointers/inline file space, however, are managed
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* separately. The memory for this information is pointed to by
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* the if_u1 unions depending on the type of the data.
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* This is used to linearize the array of extents for fast in-core
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* access. This is used until the file's number of extents
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* surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
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* are accessed through the buffer cache.
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*
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* Other state kept in the in-core inode is used for identification,
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* locking, transactional updating, etc of the inode.
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*
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* Generally, we do not want to hold the i_rlock while holding the
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* i_ilock. Hierarchy is i_iolock followed by i_rlock.
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*
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* xfs_iptr_t contains all the inode fields upto and including the
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* i_mnext and i_mprev fields, it is used as a marker in the inode
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* chain off the mount structure by xfs_sync calls.
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*/
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typedef struct xfs_ictimestamp {
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__int32_t t_sec; /* timestamp seconds */
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__int32_t t_nsec; /* timestamp nanoseconds */
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} xfs_ictimestamp_t;
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/*
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* NOTE: This structure must be kept identical to struct xfs_dinode
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* in xfs_dinode.h except for the endianness annotations.
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*/
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typedef struct xfs_icdinode {
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__uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
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__uint16_t di_mode; /* mode and type of file */
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__int8_t di_version; /* inode version */
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__int8_t di_format; /* format of di_c data */
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__uint16_t di_onlink; /* old number of links to file */
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__uint32_t di_uid; /* owner's user id */
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__uint32_t di_gid; /* owner's group id */
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__uint32_t di_nlink; /* number of links to file */
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__uint16_t di_projid; /* owner's project id */
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__uint8_t di_pad[8]; /* unused, zeroed space */
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__uint16_t di_flushiter; /* incremented on flush */
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xfs_ictimestamp_t di_atime; /* time last accessed */
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xfs_ictimestamp_t di_mtime; /* time last modified */
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xfs_ictimestamp_t di_ctime; /* time created/inode modified */
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xfs_fsize_t di_size; /* number of bytes in file */
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xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
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xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
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xfs_extnum_t di_nextents; /* number of extents in data fork */
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xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
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__uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
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__int8_t di_aformat; /* format of attr fork's data */
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__uint32_t di_dmevmask; /* DMIG event mask */
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__uint16_t di_dmstate; /* DMIG state info */
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__uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
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__uint32_t di_gen; /* generation number */
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} xfs_icdinode_t;
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/*
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* Flags for xfs_ichgtime().
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*/
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#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
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#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
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/*
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* Per-fork incore inode flags.
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*/
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#define XFS_IFINLINE 0x01 /* Inline data is read in */
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#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
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#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
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#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
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/*
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* Fork handling.
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*/
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#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
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#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
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#define XFS_IFORK_PTR(ip,w) \
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((w) == XFS_DATA_FORK ? \
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&(ip)->i_df : \
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(ip)->i_afp)
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#define XFS_IFORK_DSIZE(ip) \
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(XFS_IFORK_Q(ip) ? \
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XFS_IFORK_BOFF(ip) : \
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XFS_LITINO((ip)->i_mount))
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#define XFS_IFORK_ASIZE(ip) \
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(XFS_IFORK_Q(ip) ? \
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XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
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0)
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#define XFS_IFORK_SIZE(ip,w) \
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((w) == XFS_DATA_FORK ? \
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XFS_IFORK_DSIZE(ip) : \
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XFS_IFORK_ASIZE(ip))
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#define XFS_IFORK_FORMAT(ip,w) \
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((w) == XFS_DATA_FORK ? \
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(ip)->i_d.di_format : \
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(ip)->i_d.di_aformat)
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#define XFS_IFORK_FMT_SET(ip,w,n) \
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((w) == XFS_DATA_FORK ? \
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((ip)->i_d.di_format = (n)) : \
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((ip)->i_d.di_aformat = (n)))
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#define XFS_IFORK_NEXTENTS(ip,w) \
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((w) == XFS_DATA_FORK ? \
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(ip)->i_d.di_nextents : \
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(ip)->i_d.di_anextents)
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#define XFS_IFORK_NEXT_SET(ip,w,n) \
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((w) == XFS_DATA_FORK ? \
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((ip)->i_d.di_nextents = (n)) : \
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((ip)->i_d.di_anextents = (n)))
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#ifdef __KERNEL__
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struct bhv_desc;
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struct cred;
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struct ktrace;
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struct xfs_buf;
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struct xfs_bmap_free;
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struct xfs_bmbt_irec;
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struct xfs_inode_log_item;
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struct xfs_mount;
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struct xfs_trans;
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struct xfs_dquot;
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#if defined(XFS_ILOCK_TRACE)
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#define XFS_ILOCK_KTRACE_SIZE 32
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extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
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#else
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#define xfs_ilock_trace(i,n,f,ra)
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#endif
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typedef struct dm_attrs_s {
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__uint32_t da_dmevmask; /* DMIG event mask */
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__uint16_t da_dmstate; /* DMIG state info */
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__uint16_t da_pad; /* DMIG extra padding */
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} dm_attrs_t;
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typedef struct xfs_inode {
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/* Inode linking and identification information. */
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struct xfs_mount *i_mount; /* fs mount struct ptr */
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struct xfs_dquot *i_udquot; /* user dquot */
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struct xfs_dquot *i_gdquot; /* group dquot */
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/* Inode location stuff */
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xfs_ino_t i_ino; /* inode number (agno/agino)*/
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struct xfs_imap i_imap; /* location for xfs_imap() */
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/* Extent information. */
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xfs_ifork_t *i_afp; /* attribute fork pointer */
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xfs_ifork_t i_df; /* data fork */
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/* Transaction and locking information. */
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struct xfs_trans *i_transp; /* ptr to owning transaction*/
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struct xfs_inode_log_item *i_itemp; /* logging information */
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mrlock_t i_lock; /* inode lock */
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mrlock_t i_iolock; /* inode IO lock */
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struct completion i_flush; /* inode flush completion q */
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atomic_t i_pincount; /* inode pin count */
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wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
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spinlock_t i_flags_lock; /* inode i_flags lock */
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/* Miscellaneous state. */
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unsigned short i_flags; /* see defined flags below */
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unsigned char i_update_core; /* timestamps/size is dirty */
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unsigned char i_update_size; /* di_size field is dirty */
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unsigned int i_delayed_blks; /* count of delay alloc blks */
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xfs_icdinode_t i_d; /* most of ondisk inode */
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xfs_fsize_t i_size; /* in-memory size */
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xfs_fsize_t i_new_size; /* size when write completes */
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atomic_t i_iocount; /* outstanding I/O count */
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/* VFS inode */
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struct inode i_vnode; /* embedded VFS inode */
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#ifdef CONFIG_XFS_POSIX_ACL
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struct posix_acl *i_acl;
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struct posix_acl *i_default_acl;
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#endif
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/* Trace buffers per inode. */
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#ifdef XFS_INODE_TRACE
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struct ktrace *i_trace; /* general inode trace */
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#endif
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#ifdef XFS_BMAP_TRACE
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struct ktrace *i_xtrace; /* inode extent list trace */
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#endif
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#ifdef XFS_BTREE_TRACE
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struct ktrace *i_btrace; /* inode bmap btree trace */
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#endif
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#ifdef XFS_RW_TRACE
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struct ktrace *i_rwtrace; /* inode read/write trace */
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#endif
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#ifdef XFS_ILOCK_TRACE
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struct ktrace *i_lock_trace; /* inode lock/unlock trace */
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#endif
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#ifdef XFS_DIR2_TRACE
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struct ktrace *i_dir_trace; /* inode directory trace */
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#endif
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} xfs_inode_t;
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#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
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(ip)->i_size : (ip)->i_d.di_size;
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/* Convert from vfs inode to xfs inode */
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static inline struct xfs_inode *XFS_I(struct inode *inode)
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{
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return container_of(inode, struct xfs_inode, i_vnode);
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}
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/* convert from xfs inode to vfs inode */
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static inline struct inode *VFS_I(struct xfs_inode *ip)
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{
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return &ip->i_vnode;
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}
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/*
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* Get rid of a partially initialized inode.
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*
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* We have to go through destroy_inode to make sure allocations
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* from init_inode_always like the security data are undone.
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*
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* We mark the inode bad so that it takes the short cut in
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* the reclaim path instead of going through the flush path
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* which doesn't make sense for an inode that has never seen the
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* light of day.
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*/
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static inline void xfs_destroy_inode(struct xfs_inode *ip)
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{
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make_bad_inode(VFS_I(ip));
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return destroy_inode(VFS_I(ip));
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}
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/*
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* i_flags helper functions
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*/
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static inline void
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__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
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{
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ip->i_flags |= flags;
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}
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static inline void
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xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
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{
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spin_lock(&ip->i_flags_lock);
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__xfs_iflags_set(ip, flags);
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spin_unlock(&ip->i_flags_lock);
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}
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static inline void
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xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
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{
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spin_lock(&ip->i_flags_lock);
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ip->i_flags &= ~flags;
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spin_unlock(&ip->i_flags_lock);
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}
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static inline int
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__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
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{
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return (ip->i_flags & flags);
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}
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static inline int
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xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
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{
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int ret;
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spin_lock(&ip->i_flags_lock);
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ret = __xfs_iflags_test(ip, flags);
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spin_unlock(&ip->i_flags_lock);
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return ret;
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}
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static inline int
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xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
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{
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int ret;
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spin_lock(&ip->i_flags_lock);
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ret = ip->i_flags & flags;
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if (ret)
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ip->i_flags &= ~flags;
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spin_unlock(&ip->i_flags_lock);
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return ret;
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}
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/*
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* Manage the i_flush queue embedded in the inode. This completion
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* queue synchronizes processes attempting to flush the in-core
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* inode back to disk.
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*/
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static inline void xfs_iflock(xfs_inode_t *ip)
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{
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wait_for_completion(&ip->i_flush);
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}
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static inline int xfs_iflock_nowait(xfs_inode_t *ip)
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{
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return try_wait_for_completion(&ip->i_flush);
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}
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static inline void xfs_ifunlock(xfs_inode_t *ip)
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{
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complete(&ip->i_flush);
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}
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/*
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* In-core inode flags.
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*/
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#define XFS_IRECLAIM 0x0001 /* we have started reclaiming this inode */
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#define XFS_ISTALE 0x0002 /* inode has been staled */
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#define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */
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#define XFS_INEW 0x0008 /* inode has just been allocated */
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#define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */
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#define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */
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/*
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* Flags for inode locking.
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* Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
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* 1<<16 - 1<<32-1 -- lockdep annotation (integers)
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*/
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#define XFS_IOLOCK_EXCL (1<<0)
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#define XFS_IOLOCK_SHARED (1<<1)
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#define XFS_ILOCK_EXCL (1<<2)
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#define XFS_ILOCK_SHARED (1<<3)
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#define XFS_IUNLOCK_NONOTIFY (1<<4)
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#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
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| XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
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/*
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* Flags for lockdep annotations.
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*
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* XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
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* (ie directory operations that require locking a directory inode and
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* an entry inode). The first inode gets locked with this flag so it
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* gets a lockdep subclass of 1 and the second lock will have a lockdep
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* subclass of 0.
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*
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* XFS_LOCK_INUMORDER - for locking several inodes at the some time
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* with xfs_lock_inodes(). This flag is used as the starting subclass
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* and each subsequent lock acquired will increment the subclass by one.
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* So the first lock acquired will have a lockdep subclass of 2, the
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* second lock will have a lockdep subclass of 3, and so on. It is
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* the responsibility of the class builder to shift this to the correct
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* portion of the lock_mode lockdep mask.
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*/
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#define XFS_LOCK_PARENT 1
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#define XFS_LOCK_INUMORDER 2
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#define XFS_IOLOCK_SHIFT 16
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#define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
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#define XFS_ILOCK_SHIFT 24
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#define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
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#define XFS_IOLOCK_DEP_MASK 0x00ff0000
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#define XFS_ILOCK_DEP_MASK 0xff000000
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#define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
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#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
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#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
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/*
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* Flags for xfs_iflush()
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*/
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#define XFS_IFLUSH_DELWRI_ELSE_SYNC 1
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#define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2
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#define XFS_IFLUSH_SYNC 3
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#define XFS_IFLUSH_ASYNC 4
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#define XFS_IFLUSH_DELWRI 5
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#define XFS_IFLUSH_ASYNC_NOBLOCK 6
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/*
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* Flags for xfs_itruncate_start().
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*/
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#define XFS_ITRUNC_DEFINITE 0x1
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#define XFS_ITRUNC_MAYBE 0x2
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/*
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* For multiple groups support: if S_ISGID bit is set in the parent
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* directory, group of new file is set to that of the parent, and
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* new subdirectory gets S_ISGID bit from parent.
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*/
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#define XFS_INHERIT_GID(pip) \
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(((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
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((pip)->i_d.di_mode & S_ISGID))
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/*
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* xfs_iget.c prototypes.
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*/
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xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
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struct xfs_trans *);
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int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
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uint, uint, xfs_inode_t **, xfs_daddr_t);
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void xfs_iput(xfs_inode_t *, uint);
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void xfs_iput_new(xfs_inode_t *, uint);
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void xfs_ilock(xfs_inode_t *, uint);
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int xfs_ilock_nowait(xfs_inode_t *, uint);
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void xfs_iunlock(xfs_inode_t *, uint);
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void xfs_ilock_demote(xfs_inode_t *, uint);
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int xfs_isilocked(xfs_inode_t *, uint);
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uint xfs_ilock_map_shared(xfs_inode_t *);
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void xfs_iunlock_map_shared(xfs_inode_t *, uint);
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void xfs_ireclaim(xfs_inode_t *);
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/*
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* xfs_inode.c prototypes.
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*/
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int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
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xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t,
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int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
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uint xfs_ip2xflags(struct xfs_inode *);
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uint xfs_dic2xflags(struct xfs_dinode *);
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int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
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struct xfs_bmap_free *);
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int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
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int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
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xfs_fsize_t, int, int);
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int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
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void xfs_iext_realloc(xfs_inode_t *, int, int);
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void xfs_ipin(xfs_inode_t *);
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void xfs_iunpin(xfs_inode_t *);
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int xfs_iflush(xfs_inode_t *, uint);
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void xfs_ichgtime(xfs_inode_t *, int);
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xfs_fsize_t xfs_file_last_byte(xfs_inode_t *);
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void xfs_lock_inodes(xfs_inode_t **, int, uint);
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void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
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void xfs_synchronize_atime(xfs_inode_t *);
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void xfs_mark_inode_dirty_sync(xfs_inode_t *);
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#if defined(XFS_INODE_TRACE)
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#define INODE_TRACE_SIZE 16 /* number of trace entries */
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#define INODE_KTRACE_ENTRY 1
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#define INODE_KTRACE_EXIT 2
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#define INODE_KTRACE_HOLD 3
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#define INODE_KTRACE_REF 4
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#define INODE_KTRACE_RELE 5
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extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *);
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extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *);
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extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *);
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extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *);
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extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *);
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#define xfs_itrace_entry(ip) \
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_xfs_itrace_entry(ip, __func__, (inst_t *)__return_address)
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#define xfs_itrace_exit(ip) \
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_xfs_itrace_exit(ip, __func__, (inst_t *)__return_address)
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#define xfs_itrace_exit_tag(ip, tag) \
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_xfs_itrace_exit(ip, tag, (inst_t *)__return_address)
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#define xfs_itrace_ref(ip) \
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_xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address)
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#else
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#define xfs_itrace_entry(a)
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#define xfs_itrace_exit(a)
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#define xfs_itrace_exit_tag(a, b)
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#define xfs_itrace_hold(a, b, c, d)
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#define xfs_itrace_ref(a)
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#define xfs_itrace_rele(a, b, c, d)
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#endif
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#define IHOLD(ip) \
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do { \
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ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \
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atomic_inc(&(VFS_I(ip)->i_count)); \
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xfs_itrace_hold((ip), __FILE__, __LINE__, (inst_t *)__return_address); \
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} while (0)
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#define IRELE(ip) \
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do { \
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xfs_itrace_rele((ip), __FILE__, __LINE__, (inst_t *)__return_address); \
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iput(VFS_I(ip)); \
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} while (0)
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#endif /* __KERNEL__ */
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/*
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* Flags for xfs_iget()
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*/
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#define XFS_IGET_CREATE 0x1
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#define XFS_IGET_BULKSTAT 0x2
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int xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
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xfs_ino_t, struct xfs_dinode **,
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struct xfs_buf **, int *, uint);
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int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
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struct xfs_inode *, struct xfs_dinode **,
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struct xfs_buf **, uint);
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int xfs_iread(struct xfs_mount *, struct xfs_trans *,
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struct xfs_inode *, xfs_daddr_t, uint);
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void xfs_dinode_from_disk(struct xfs_icdinode *,
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struct xfs_dinode *);
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void xfs_dinode_to_disk(struct xfs_dinode *,
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struct xfs_icdinode *);
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void xfs_idestroy_fork(struct xfs_inode *, int);
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void xfs_idata_realloc(struct xfs_inode *, int, int);
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void xfs_iroot_realloc(struct xfs_inode *, int, int);
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int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
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int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
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xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
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void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
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xfs_bmbt_irec_t *);
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void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
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void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
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void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int);
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void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
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void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
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void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
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void xfs_iext_realloc_direct(xfs_ifork_t *, int);
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void xfs_iext_realloc_indirect(xfs_ifork_t *, int);
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void xfs_iext_indirect_to_direct(xfs_ifork_t *);
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void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
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void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
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void xfs_iext_destroy(xfs_ifork_t *);
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xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
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xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
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xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
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void xfs_iext_irec_init(xfs_ifork_t *);
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xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
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void xfs_iext_irec_remove(xfs_ifork_t *, int);
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void xfs_iext_irec_compact(xfs_ifork_t *);
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void xfs_iext_irec_compact_pages(xfs_ifork_t *);
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void xfs_iext_irec_compact_full(xfs_ifork_t *);
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void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
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|
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#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
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|
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#ifdef DEBUG
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void xfs_isize_check(struct xfs_mount *, struct xfs_inode *,
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xfs_fsize_t);
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#else /* DEBUG */
|
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#define xfs_isize_check(mp, ip, isize)
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#endif /* DEBUG */
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|
|
#if defined(DEBUG)
|
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void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
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#else
|
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#define xfs_inobp_check(mp, bp)
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#endif /* DEBUG */
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|
|
extern struct kmem_zone *xfs_ifork_zone;
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extern struct kmem_zone *xfs_inode_zone;
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|
extern struct kmem_zone *xfs_ili_zone;
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|
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#endif /* __XFS_INODE_H__ */
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