1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * Basic Lustre library routines.
28 #include <asm/types.h>
34 #include <linux/portals_lib.h>
35 #include <asm/semaphore.h>
36 #include <linux/lustre_idl.h>
42 struct task_struct *l_owner;
43 struct semaphore l_sem;
47 void l_lock_init(struct lustre_lock *);
48 void l_lock(struct lustre_lock *);
49 void l_unlock(struct lustre_lock *);
53 inline void lustre_put_page(struct page *page);
54 struct page *lustre_get_page_read(struct inode *dir, unsigned long index);
55 struct page *lustre_get_page_write(struct inode *dir, unsigned long index);
56 int lustre_commit_page(struct page *page, unsigned from, unsigned to);
57 void set_page_clean(struct page *page);
58 void set_page_dirty(struct page *page);
62 void push_ctxt(struct obd_run_ctxt *save, struct obd_run_ctxt *new);
63 void pop_ctxt(struct obd_run_ctxt *saved);
65 #define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC
67 #define OBD_SET_CTXT_MAGIC(magic) do {} while(0)
69 struct dentry *simple_mkdir(struct dentry *dir, char *name, int mode);
70 int lustre_fread(struct file *file, char *str, int len, loff_t *off);
71 int lustre_fwrite(struct file *file, const char *str, int len, loff_t *off);
72 int lustre_fsync(struct file *file);
74 static inline void l_dput(struct dentry *de)
76 if (!de || IS_ERR(de))
78 shrink_dcache_parent(de);
82 static inline void ll_sleep(int t)
84 set_current_state(TASK_INTERRUPTIBLE);
85 schedule_timeout(t * HZ);
86 set_current_state(TASK_RUNNING);
90 /* FIXME: This needs to validate pointers and cookies */
91 static inline void *lustre_handle2object(struct lustre_handle *handle)
94 return (void *)(unsigned long)(handle->addr);
98 static inline void ldlm_object2handle(void *object, struct lustre_handle *handle)
100 handle->addr = (__u64)(unsigned long)object;
105 void obd_statfs_pack(struct obd_statfs *osfs, struct statfs *sfs);
106 void obd_statfs_unpack(struct obd_statfs *osfs, struct statfs *sfs);
108 #include <linux/portals_lib.h>
110 #endif /* _LUSTRE_LIB_H */