diff options
Diffstat (limited to 'fs/xfs/xfs_ialloc.h')
| -rw-r--r-- | fs/xfs/xfs_ialloc.h | 149 |
1 files changed, 64 insertions, 85 deletions
diff --git a/fs/xfs/xfs_ialloc.h b/fs/xfs/xfs_ialloc.h index db6d0015cec..95ad1c002d6 100644 --- a/fs/xfs/xfs_ialloc.h +++ b/fs/xfs/xfs_ialloc.h @@ -1,96 +1,52 @@ /* - * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000,2005 Silicon Graphics, Inc. + * All Rights Reserved. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. * - * Further, this software is distributed without any warranty that it is - * free of the rightful claim of any third person regarding infringement - * or the like. Any license provided herein, whether implied or - * otherwise, applies only to this software file. Patent licenses, if - * any, provided herein do not apply to combinations of this program with - * other software, or any other product whatsoever. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, - * Mountain View, CA 94043, or: - * - * http://www.sgi.com - * - * For further information regarding this notice, see: - * - * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_IALLOC_H__ #define __XFS_IALLOC_H__ struct xfs_buf; struct xfs_dinode; +struct xfs_imap; struct xfs_mount; struct xfs_trans; +struct xfs_btree_cur; -/* - * Allocation parameters for inode allocation. - */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IALLOC_INODES) -int xfs_ialloc_inodes(struct xfs_mount *mp); -#define XFS_IALLOC_INODES(mp) xfs_ialloc_inodes(mp) -#else -#define XFS_IALLOC_INODES(mp) ((mp)->m_ialloc_inos) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IALLOC_BLOCKS) -xfs_extlen_t xfs_ialloc_blocks(struct xfs_mount *mp); -#define XFS_IALLOC_BLOCKS(mp) xfs_ialloc_blocks(mp) -#else -#define XFS_IALLOC_BLOCKS(mp) ((mp)->m_ialloc_blks) -#endif - -/* - * For small block file systems, move inodes in clusters of this size. - * When we don't have a lot of memory, however, we go a bit smaller - * to reduce the number of AGI and ialloc btree blocks we need to keep - * around for xfs_dilocate(). We choose which one to use in - * xfs_mount_int(). - */ +/* Move inodes in clusters of this size */ #define XFS_INODE_BIG_CLUSTER_SIZE 8192 -#define XFS_INODE_SMALL_CLUSTER_SIZE 4096 -#define XFS_INODE_CLUSTER_SIZE(mp) (mp)->m_inode_cluster_size -/* - * Make an inode pointer out of the buffer/offset. - */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MAKE_IPTR) -struct xfs_dinode *xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o); -#define XFS_MAKE_IPTR(mp,b,o) xfs_make_iptr(mp,b,o) -#else -#define XFS_MAKE_IPTR(mp,b,o) \ - ((xfs_dinode_t *)(xfs_buf_offset(b, (o) << (mp)->m_sb.sb_inodelog))) -#endif +/* Calculate and return the number of filesystem blocks per inode cluster */ +static inline int +xfs_icluster_size_fsb( + struct xfs_mount *mp) +{ + if (mp->m_sb.sb_blocksize >= mp->m_inode_cluster_size) + return 1; + return mp->m_inode_cluster_size >> mp->m_sb.sb_blocklog; +} /* - * Find a free (set) bit in the inode bitmask. - */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IALLOC_FIND_FREE) -int xfs_ialloc_find_free(xfs_inofree_t *fp); -#define XFS_IALLOC_FIND_FREE(fp) xfs_ialloc_find_free(fp) -#else -#define XFS_IALLOC_FIND_FREE(fp) xfs_lowbit64(*(fp)) -#endif - - -#ifdef __KERNEL__ - -/* - * Prototypes for visible xfs_ialloc.c routines. + * Make an inode pointer out of the buffer/offset. */ +static inline struct xfs_dinode * +xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o) +{ + return (struct xfs_dinode *) + (xfs_buf_offset(b, o << (mp)->m_sb.sb_inodelog)); +} /* * Allocate an inode on disk. @@ -118,11 +74,9 @@ int /* error */ xfs_dialloc( struct xfs_trans *tp, /* transaction pointer */ xfs_ino_t parent, /* parent inode (directory) */ - mode_t mode, /* mode bits for new inode */ + umode_t mode, /* mode bits for new inode */ int okalloc, /* ok to allocate more space */ struct xfs_buf **agbp, /* buf for a.g. inode header */ - boolean_t *alloc_done, /* an allocation was done to replenish - the free inodes */ xfs_ino_t *inop); /* inode number allocated */ /* @@ -136,21 +90,18 @@ xfs_difree( struct xfs_trans *tp, /* transaction pointer */ xfs_ino_t inode, /* inode to be freed */ struct xfs_bmap_free *flist, /* extents to free */ - int *delete, /* set if inode cluster was deleted */ + int *deleted, /* set if inode cluster was deleted */ xfs_ino_t *first_ino); /* first inode in deleted cluster */ /* - * Return the location of the inode in bno/len/off, - * for mapping it into a buffer. + * Return the location of the inode in imap, for mapping it into a buffer. */ int -xfs_dilocate( +xfs_imap( struct xfs_mount *mp, /* file system mount structure */ struct xfs_trans *tp, /* transaction pointer */ xfs_ino_t ino, /* inode to locate */ - xfs_fsblock_t *bno, /* output: block containing inode */ - int *len, /* output: num blocks in cluster*/ - int *off, /* output: index in block of inode */ + struct xfs_imap *imap, /* location map structure */ uint flags); /* flags for inode btree lookup */ /* @@ -179,6 +130,34 @@ xfs_ialloc_read_agi( xfs_agnumber_t agno, /* allocation group number */ struct xfs_buf **bpp); /* allocation group hdr buf */ -#endif /* __KERNEL__ */ +/* + * Read in the allocation group header to initialise the per-ag data + * in the mount structure + */ +int +xfs_ialloc_pagi_init( + struct xfs_mount *mp, /* file system mount structure */ + struct xfs_trans *tp, /* transaction pointer */ + xfs_agnumber_t agno); /* allocation group number */ + +/* + * Lookup a record by ino in the btree given by cur. + */ +int xfs_inobt_lookup(struct xfs_btree_cur *cur, xfs_agino_t ino, + xfs_lookup_t dir, int *stat); + +/* + * Get the data from the pointed-to record. + */ +int xfs_inobt_get_rec(struct xfs_btree_cur *cur, + xfs_inobt_rec_incore_t *rec, int *stat); + +/* + * Inode chunk initialisation routine + */ +int xfs_ialloc_inode_init(struct xfs_mount *mp, struct xfs_trans *tp, + struct list_head *buffer_list, + xfs_agnumber_t agno, xfs_agblock_t agbno, + xfs_agblock_t length, unsigned int gen); #endif /* __XFS_IALLOC_H__ */ |