linux-IllusionX/fs/ocfs2/super.h
Joel Becker e4b963f10e ocfs2: Wrap signal blocking in void functions.
ocfs2 sometimes needs to block signals around dlm operations, but it
currently does it with sigprocmask().  Even worse, it's checking the
error code of sigprocmask().  The in-kernel sigprocmask() can only error
if you get the SIG_* argument wrong.  We don't.

Wrap the sigprocmask() calls with ocfs2_[un]block_signals().  These
functions are void, but they will BUG() if somehow sigprocmask() returns
an error.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-05-10 11:50:10 -07:00

55 lines
1.7 KiB
C

/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* super.h
*
* Function prototypes
*
* 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 OCFS2_SUPER_H
#define OCFS2_SUPER_H
extern struct workqueue_struct *ocfs2_wq;
int ocfs2_publish_get_mount_state(struct ocfs2_super *osb,
int node_num);
void __ocfs2_error(struct super_block *sb,
const char *function,
const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
#define ocfs2_error(sb, fmt, args...) __ocfs2_error(sb, __PRETTY_FUNCTION__, fmt, ##args)
void __ocfs2_abort(struct super_block *sb,
const char *function,
const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
#define ocfs2_abort(sb, fmt, args...) __ocfs2_abort(sb, __PRETTY_FUNCTION__, fmt, ##args)
/*
* Void signal blockers, because in-kernel sigprocmask() only fails
* when SIG_* is wrong.
*/
void ocfs2_block_signals(sigset_t *oldset);
void ocfs2_unblock_signals(sigset_t *oldset);
#endif /* OCFS2_SUPER_H */