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Diffstat (limited to 'sys/gnu/fs/xfs/xfs_ialloc.h')
| -rw-r--r-- | sys/gnu/fs/xfs/xfs_ialloc.h | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/sys/gnu/fs/xfs/xfs_ialloc.h b/sys/gnu/fs/xfs/xfs_ialloc.h deleted file mode 100644 index 7f5debe..0000000 --- a/sys/gnu/fs/xfs/xfs_ialloc.h +++ /dev/null @@ -1,154 +0,0 @@ -/* - * 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 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. See the - * GNU General Public License for more details. - * - * 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_mount; -struct xfs_trans; - -/* - * Allocation parameters for inode allocation. - */ -#define XFS_IALLOC_INODES(mp) (mp)->m_ialloc_inos -#define XFS_IALLOC_BLOCKS(mp) (mp)->m_ialloc_blks - -/* - * 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(). - */ -#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. - */ -#define XFS_MAKE_IPTR(mp,b,o) xfs_make_iptr(mp,b,o) -static inline struct xfs_dinode * -xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o) -{ - return (xfs_dinode_t *) - (xfs_buf_offset(b, o << (mp)->m_sb.sb_inodelog)); -} - -/* - * Find a free (set) bit in the inode bitmask. - */ -#define XFS_IALLOC_FIND_FREE(fp) xfs_ialloc_find_free(fp) -static inline int xfs_ialloc_find_free(xfs_inofree_t *fp) -{ - return xfs_lowbit64(*fp); -} - - -#ifdef __KERNEL__ -/* - * Allocate an inode on disk. - * Mode is used to tell whether the new inode will need space, and whether - * it is a directory. - * - * To work within the constraint of one allocation per transaction, - * xfs_dialloc() is designed to be called twice if it has to do an - * allocation to make more free inodes. If an inode is - * available without an allocation, agbp would be set to the current - * agbp and alloc_done set to false. - * If an allocation needed to be done, agbp would be set to the - * inode header of the allocation group and alloc_done set to true. - * The caller should then commit the current transaction and allocate a new - * transaction. xfs_dialloc() should then be called again with - * the agbp value returned from the previous call. - * - * Once we successfully pick an inode its number is returned and the - * on-disk data structures are updated. The inode itself is not read - * in, since doing so would break ordering constraints with xfs_reclaim. - * - * *agbp should be set to NULL on the first call, *alloc_done set to FALSE. - */ -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 */ - 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 */ - -/* - * Free disk inode. Carefully avoids touching the incore inode, all - * manipulations incore are the caller's responsibility. - * The on-disk inode is not changed by this operation, only the - * btree (free inode mask) is changed. - */ -int /* error */ -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 */ - 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. - */ -int -xfs_dilocate( - 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 */ - uint flags); /* flags for inode btree lookup */ - -/* - * Compute and fill in value of m_in_maxlevels. - */ -void -xfs_ialloc_compute_maxlevels( - struct xfs_mount *mp); /* file system mount structure */ - -/* - * Log specified fields for the ag hdr (inode section) - */ -void -xfs_ialloc_log_agi( - struct xfs_trans *tp, /* transaction pointer */ - struct xfs_buf *bp, /* allocation group header buffer */ - int fields); /* bitmask of fields to log */ - -/* - * Read in the allocation group header (inode allocation section) - */ -int /* error */ -xfs_ialloc_read_agi( - struct xfs_mount *mp, /* file system mount structure */ - struct xfs_trans *tp, /* transaction pointer */ - xfs_agnumber_t agno, /* allocation group number */ - struct xfs_buf **bpp); /* allocation group hdr buf */ - -#endif /* __KERNEL__ */ - -#endif /* __XFS_IALLOC_H__ */ |
