forked from Minki/linux
3987848c7c
The struct xfs_inode has two copies of the current timestamps in it, one in the vfs inode and one in the struct xfs_icdinode. Now that we no longer log the struct xfs_icdinode directly, we don't need to keep the timestamps in this structure. instead we can copy them straight out of the VFS inode when formatting the inode log item or the on-disk inode. This reduces the struct xfs_inode in size by 24 bytes. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
101 lines
4.0 KiB
C
101 lines
4.0 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_BUF_H__
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#define __XFS_INODE_BUF_H__
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struct xfs_inode;
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struct xfs_dinode;
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/*
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* In memory representation of the XFS inode. This is held in the in-core
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* struct xfs_inode to represent the on disk values, but no longer needs to be
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* identical to the on-disk structure as it is always translated to on-disk
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* format specific structures at the appropriate time.
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*/
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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_lo; /* lower part of owner's project id */
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__uint16_t di_projid_hi; /* higher part of owner's project id */
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__uint8_t di_pad[6]; /* unused, zeroed space */
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__uint16_t di_flushiter; /* incremented on flush */
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xfs_fsize_t di_size; /* number of bytes in file */
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xfs_rfsblock_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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/* di_next_unlinked is the only non-core field in the old dinode */
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xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */
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/* start of the extended dinode, writable fields */
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__uint32_t di_crc; /* CRC of the inode */
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__uint64_t di_changecount; /* number of attribute changes */
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xfs_lsn_t di_lsn; /* flush sequence */
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__uint64_t di_flags2; /* more random flags */
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__uint8_t di_pad2[16]; /* more padding for future expansion */
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/* fields only written to during inode creation */
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xfs_ictimestamp_t di_crtime; /* time created */
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xfs_ino_t di_ino; /* inode number */
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uuid_t di_uuid; /* UUID of the filesystem */
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/* structure must be padded to 64 bit alignment */
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};
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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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int xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *,
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struct xfs_imap *, struct xfs_dinode **,
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struct xfs_buf **, uint, uint);
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int xfs_iread(struct xfs_mount *, struct xfs_trans *,
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struct xfs_inode *, uint);
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void xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *);
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void xfs_inode_to_disk(struct xfs_inode *ip, struct xfs_dinode *to);
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void xfs_inode_from_disk(struct xfs_inode *ip, struct xfs_dinode *from);
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void xfs_log_dinode_to_disk(struct xfs_log_dinode *from,
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struct xfs_dinode *to);
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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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#endif /* __XFS_INODE_BUF_H__ */
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