linux-stable/fs/ocfs2/dlm/dlmdebug.h
Joseph Qi 8ec7b17a66 ocfs2/dlm: fix memory leak of dlm_debug_ctxt
dlm_debug_ctxt->debug_refcnt is initialized to 1 and then increased to 2
by dlm_debug_get in dlm_debug_init.  But dlm_debug_put is called only
once in dlm_debug_shutdown during unregister dlm, which leads to
dlm_debug_ctxt leaked.

Link: http://lkml.kernel.org/r/577BB755.4030900@huawei.com
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: Jiufei Xue <xuejiufei@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-26 16:19:19 -07:00

80 lines
2 KiB
C

/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* dlmdebug.h
*
* Copyright (C) 2008 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 DLMDEBUG_H
#define DLMDEBUG_H
void dlm_print_one_mle(struct dlm_master_list_entry *mle);
#ifdef CONFIG_DEBUG_FS
struct dlm_debug_ctxt {
struct dentry *debug_state_dentry;
struct dentry *debug_lockres_dentry;
struct dentry *debug_mle_dentry;
struct dentry *debug_purgelist_dentry;
};
struct debug_lockres {
int dl_len;
char *dl_buf;
struct dlm_ctxt *dl_ctxt;
struct dlm_lock_resource *dl_res;
};
int dlm_debug_init(struct dlm_ctxt *dlm);
void dlm_debug_shutdown(struct dlm_ctxt *dlm);
int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm);
void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm);
int dlm_create_debugfs_root(void);
void dlm_destroy_debugfs_root(void);
#else
static inline int dlm_debug_init(struct dlm_ctxt *dlm)
{
return 0;
}
static inline void dlm_debug_shutdown(struct dlm_ctxt *dlm)
{
}
static inline int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
{
return 0;
}
static inline void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm)
{
}
static inline int dlm_create_debugfs_root(void)
{
return 0;
}
static inline void dlm_destroy_debugfs_root(void)
{
}
#endif /* CONFIG_DEBUG_FS */
#endif /* DLMDEBUG_H */