http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/xfs/xfs_extfree_item.h

/* * 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_EXTFREE_ITEM_H__ #define __XFS_EXTFREE_ITEM_H__ struct xfs_mount; struct kmem_zone; typedef struct xfs_extent { xfs_dfsbno_t ext_start; xfs_extlen_t ext_len; } xfs_extent_t; /* * This is the structure used to lay out an efi log item in the * log. The efi_extents field is a variable size array whose * size is given by efi_nextents. */ typedef struct xfs_efi_log_format { unsigned short efi_type; /* efi log item type */ unsigned short efi_size; /* size of this item */ uint efi_nextents; /* # extents to free */ __uint64_t efi_id; /* efi identifier */ xfs_extent_t efi_extents[1]; /* array of extents to free */ } xfs_efi_log_format_t; /* * This is the structure used to lay out an efd log item in the * log. The efd_extents array is a variable size array whose * size is given by efd_nextents; */ typedef struct xfs_efd_log_format { unsigned short efd_type; /* efd log item type */ unsigned short efd_size; /* size of this item */ uint efd_nextents; /* # of extents freed */ __uint64_t efd_efi_id; /* id of corresponding efi */ xfs_extent_t efd_extents[1]; /* array of extents freed */ } xfs_efd_log_format_t; #ifdef __KERNEL__ /* * Max number of extents in fast allocation path. */ #define XFS_EFI_MAX_FAST_EXTENTS 16 /* * Define EFI flags. */ #define XFS_EFI_RECOVERED 0x1 #define XFS_EFI_COMMITTED 0x2 #define XFS_EFI_CANCELED 0x4 /* * This is the "extent free intention" log item. It is used * to log the fact that some extents need to be free. It is * used in conjunction with the "extent free done" log item * described below. */ typedef struct xfs_efi_log_item { xfs_log_item_t efi_item; uint efi_flags; /* misc flags */ uint efi_next_extent; xfs_efi_log_format_t efi_format; } xfs_efi_log_item_t; /* * This is the "extent free done" log item. It is used to log * the fact that some extents earlier mentioned in an efi item * have been freed. */ typedef struct xfs_efd_log_item { xfs_log_item_t efd_item; xfs_efi_log_item_t *efd_efip; uint efd_next_extent; xfs_efd_log_format_t efd_format; } xfs_efd_log_item_t; /* * Max number of extents in fast allocation path. */ #define XFS_EFD_MAX_FAST_EXTENTS 16 extern struct kmem_zone *xfs_efi_zone; extern struct kmem_zone *xfs_efd_zone; xfs_efi_log_item_t *xfs_efi_init(struct xfs_mount *, uint); xfs_efd_log_item_t *xfs_efd_init(struct xfs_mount *, xfs_efi_log_item_t *, uint); void xfs_efi_item_free(xfs_efi_log_item_t *); #endif /* __KERNEL__ */ #endif /* __XFS_EXTFREE_ITEM_H__ */