/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
#ifndef __GLOCK_DOT_H__
#define __GLOCK_DOT_H__
+#include <linux/sched.h>
+#include "incore.h"
+
/* Flags for lock requests; used in gfs2_holder gh_flag field.
From lm_interface.h:
#define LM_FLAG_TRY 0x00000001
#define LM_FLAG_ANY 0x00000008
#define LM_FLAG_PRIORITY 0x00000010 */
-#define GL_LOCAL_EXCL 0x00000020
#define GL_ASYNC 0x00000040
#define GL_EXACT 0x00000080
#define GL_SKIP 0x00000100
-#define GL_ATIME 0x00000200
#define GL_NOCACHE 0x00000400
-#define GL_SYNC 0x00000800
-#define GL_NOCANCEL 0x00001000
-#define GL_NEVER_RECURSE 0x00002000
-#define GL_AOP 0x00004000
#define GLR_TRYFAILED 13
-#define GLR_CANCELED 14
-static inline int gfs2_glock_is_locked_by_me(struct gfs2_glock *gl)
+static inline struct gfs2_holder *gfs2_glock_is_locked_by_me(struct gfs2_glock *gl)
{
struct gfs2_holder *gh;
- int locked = 0;
+ struct pid *pid;
/* Look in glock's list of holders for one with current task as owner */
spin_lock(&gl->gl_spin);
+ pid = task_pid(current);
list_for_each_entry(gh, &gl->gl_holders, gh_list) {
- if (gh->gh_owner == current) {
- locked = 1;
+ if (!test_bit(HIF_HOLDER, &gh->gh_iflags))
break;
- }
+ if (gh->gh_owner_pid == pid)
+ goto out;
}
+ gh = NULL;
+out:
spin_unlock(&gl->gl_spin);
- return locked;
+ return gh;
}
static inline int gfs2_glock_is_held_excl(struct gfs2_glock *gl)
{
- return (gl->gl_state == LM_ST_EXCLUSIVE);
+ return gl->gl_state == LM_ST_EXCLUSIVE;
}
static inline int gfs2_glock_is_held_dfrd(struct gfs2_glock *gl)
{
- return (gl->gl_state == LM_ST_DEFERRED);
+ return gl->gl_state == LM_ST_DEFERRED;
}
static inline int gfs2_glock_is_held_shrd(struct gfs2_glock *gl)
{
- return (gl->gl_state == LM_ST_SHARED);
+ return gl->gl_state == LM_ST_SHARED;
}
static inline int gfs2_glock_is_blocking(struct gfs2_glock *gl)
{
int ret;
spin_lock(&gl->gl_spin);
- ret = !list_empty(&gl->gl_waiters2) || !list_empty(&gl->gl_waiters3);
+ ret = test_bit(GLF_DEMOTE, &gl->gl_flags);
spin_unlock(&gl->gl_spin);
return ret;
}
-struct gfs2_glock *gfs2_glock_find(struct gfs2_sbd *sdp,
- struct lm_lockname *name);
int gfs2_glock_get(struct gfs2_sbd *sdp,
- uint64_t number, struct gfs2_glock_operations *glops,
+ u64 number, const struct gfs2_glock_operations *glops,
int create, struct gfs2_glock **glp);
-void gfs2_glock_hold(struct gfs2_glock *gl);
int gfs2_glock_put(struct gfs2_glock *gl);
-
-void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, int flags,
+void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, unsigned flags,
struct gfs2_holder *gh);
-void gfs2_holder_reinit(unsigned int state, int flags, struct gfs2_holder *gh);
+void gfs2_holder_reinit(unsigned int state, unsigned flags,
+ struct gfs2_holder *gh);
void gfs2_holder_uninit(struct gfs2_holder *gh);
-struct gfs2_holder *gfs2_holder_get(struct gfs2_glock *gl, unsigned int state,
- int flags, gfp_t gfp_flags);
-void gfs2_holder_put(struct gfs2_holder *gh);
-
-void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags);
-void gfs2_glock_drop_th(struct gfs2_glock *gl);
-
-void gfs2_glmutex_lock(struct gfs2_glock *gl);
-int gfs2_glmutex_trylock(struct gfs2_glock *gl);
-void gfs2_glmutex_unlock(struct gfs2_glock *gl);
-
int gfs2_glock_nq(struct gfs2_holder *gh);
int gfs2_glock_poll(struct gfs2_holder *gh);
int gfs2_glock_wait(struct gfs2_holder *gh);
void gfs2_glock_dq(struct gfs2_holder *gh);
-
-void gfs2_glock_prefetch(struct gfs2_glock *gl, unsigned int state, int flags);
-void gfs2_glock_force_drop(struct gfs2_glock *gl);
-
-int gfs2_glock_be_greedy(struct gfs2_glock *gl, unsigned int time);
+void gfs2_glock_dq_wait(struct gfs2_holder *gh);
void gfs2_glock_dq_uninit(struct gfs2_holder *gh);
int gfs2_glock_nq_num(struct gfs2_sbd *sdp,
- uint64_t number, struct gfs2_glock_operations *glops,
+ u64 number, const struct gfs2_glock_operations *glops,
unsigned int state, int flags, struct gfs2_holder *gh);
int gfs2_glock_nq_m(unsigned int num_gh, struct gfs2_holder *ghs);
void gfs2_glock_dq_m(unsigned int num_gh, struct gfs2_holder *ghs);
void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs);
-
-void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, uint64_t number,
- struct gfs2_glock_operations *glops,
- unsigned int state, int flags);
+void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...);
/**
* gfs2_glock_nq_init - intialize a holder and enqueue it on a glock
int gfs2_lvb_hold(struct gfs2_glock *gl);
void gfs2_lvb_unhold(struct gfs2_glock *gl);
-void gfs2_lvb_sync(struct gfs2_glock *gl);
-
-void gfs2_glock_cb(lm_fsdata_t *fsdata, unsigned int type, void *data);
-
-void gfs2_try_toss_inode(struct gfs2_sbd *sdp, struct gfs2_inum *inum);
-void gfs2_iopen_go_callback(struct gfs2_glock *gl, unsigned int state);
+void gfs2_glock_cb(void *cb_data, unsigned int type, void *data);
void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl);
void gfs2_reclaim_glock(struct gfs2_sbd *sdp);
+void gfs2_gl_hash_clear(struct gfs2_sbd *sdp);
-void gfs2_scand_internal(struct gfs2_sbd *sdp);
-void gfs2_gl_hash_clear(struct gfs2_sbd *sdp, int wait);
+int __init gfs2_glock_init(void);
+void gfs2_glock_exit(void);
-int gfs2_dump_lockstate(struct gfs2_sbd *sdp);
+int gfs2_create_debugfs_file(struct gfs2_sbd *sdp);
+void gfs2_delete_debugfs_file(struct gfs2_sbd *sdp);
+int gfs2_register_debugfs(void);
+void gfs2_unregister_debugfs(void);
#endif /* __GLOCK_DOT_H__ */
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