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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | /* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * dlmglue.h * * description here * * Copyright (C) 2002, 2004 Oracle. 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; either * version 2 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will 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 to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef DLMGLUE_H #define DLMGLUE_H #define OCFS2_LVB_VERSION 2 struct ocfs2_meta_lvb { __be32 lvb_version; __be32 lvb_iclusters; __be32 lvb_iuid; __be32 lvb_igid; __be64 lvb_iatime_packed; __be64 lvb_ictime_packed; __be64 lvb_imtime_packed; __be64 lvb_isize; __be16 lvb_imode; __be16 lvb_inlink; __be32 lvb_reserved[3]; }; /* ocfs2_meta_lock_full() and ocfs2_data_lock_full() 'arg_flags' flags */ /* don't wait on recovery. */ #define OCFS2_META_LOCK_RECOVERY (0x01) /* Instruct the dlm not to queue ourselves on the other node. */ #define OCFS2_META_LOCK_NOQUEUE (0x02) /* don't block waiting for the vote thread, instead return -EAGAIN */ #define OCFS2_LOCK_NONBLOCK (0x04) int ocfs2_dlm_init(struct ocfs2_super *osb); void ocfs2_dlm_shutdown(struct ocfs2_super *osb); void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res); void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res, enum ocfs2_lock_type type, struct inode *inode); void ocfs2_lock_res_free(struct ocfs2_lock_res *res); int ocfs2_create_new_inode_locks(struct inode *inode); int ocfs2_drop_inode_locks(struct inode *inode); int ocfs2_data_lock_full(struct inode *inode, int write, int arg_flags); #define ocfs2_data_lock(inode, write) ocfs2_data_lock_full(inode, write, 0) int ocfs2_data_lock_with_page(struct inode *inode, int write, struct page *page); void ocfs2_data_unlock(struct inode *inode, int write); int ocfs2_rw_lock(struct inode *inode, int write); void ocfs2_rw_unlock(struct inode *inode, int write); int ocfs2_meta_lock_full(struct inode *inode, struct ocfs2_journal_handle *handle, struct buffer_head **ret_bh, int ex, int arg_flags); int ocfs2_meta_lock_with_page(struct inode *inode, struct ocfs2_journal_handle *handle, struct buffer_head **ret_bh, int ex, struct page *page); /* 99% of the time we don't want to supply any additional flags -- * those are for very specific cases only. */ #define ocfs2_meta_lock(i, h, b, e) ocfs2_meta_lock_full(i, h, b, e, 0) void ocfs2_meta_unlock(struct inode *inode, int ex); int ocfs2_super_lock(struct ocfs2_super *osb, int ex); void ocfs2_super_unlock(struct ocfs2_super *osb, int ex); int ocfs2_rename_lock(struct ocfs2_super *osb); void ocfs2_rename_unlock(struct ocfs2_super *osb); void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres); /* for the vote thread */ void ocfs2_process_blocked_lock(struct ocfs2_super *osb, struct ocfs2_lock_res *lockres); struct ocfs2_dlm_debug *ocfs2_new_dlm_debug(void); void ocfs2_put_dlm_debug(struct ocfs2_dlm_debug *dlm_debug); /* aids in debugging and tracking lvbs */ void ocfs2_dump_meta_lvb_info(u64 level, const char *function, unsigned int line, struct ocfs2_lock_res *lockres); #define mlog_meta_lvb(__level, __lockres) ocfs2_dump_meta_lvb_info(__level, __PRETTY_FUNCTION__, __LINE__, __lockres) #endif /* DLMGLUE_H */ |