linux/fs/dlm/dir.h

/* SPDX-License-Identifier: GPL-2.0-only */
/******************************************************************************
*******************************************************************************
**
**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
**  Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
**
**
*******************************************************************************
******************************************************************************/

#ifndef __DIR_DOT_H__
#define __DIR_DOT_H__

int dlm_dir_nodeid(struct dlm_rsb *rsb);
int dlm_hash2nodeid(struct dlm_ls *ls, uint32_t hash);
void dlm_recover_dir_nodeid(struct dlm_ls *ls);
int dlm_recover_directory(struct dlm_ls *ls, uint64_t seq);
void dlm_copy_master_names(struct dlm_ls *ls, const char *inbuf, int inlen,
			   char *outbuf, int outlen, int nodeid);

#endif				/* __DIR_DOT_H__ */
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 193 Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 45 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.342746075@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-28 16:57:20 +00:00			`/* SPDX-License-Identifier: GPL-2.0-only */`
[DLM] The core of the DLM for GFS2/CLVM This is the core of the distributed lock manager which is required to use GFS2 as a cluster filesystem. It is also used by CLVM and can be used as a standalone lock manager independantly of either of these two projects. It implements VAX-style locking modes. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steve Whitehouse <swhiteho@redhat.com> 2006-01-18 09:30:29 +00:00			`/******************************************************************************`
			`*******************************************************************************`
			`**`
			`** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.`
			`** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.`
			`**`
			`**`
			`*******************************************************************************`
			`******************************************************************************/`

			`#ifndef __DIR_DOT_H__`
			`#define __DIR_DOT_H__`

			`int dlm_dir_nodeid(struct dlm_rsb *rsb);`
			`int dlm_hash2nodeid(struct dlm_ls *ls, uint32_t hash);`
dlm: use rsbtbl as resource directory Remove the dir hash table (dirtbl), and use the rsb hash table (rsbtbl) as the resource directory. It has always been an unnecessary duplication of information. This improves efficiency by using a single rsbtbl lookup in many cases where both rsbtbl and dirtbl lookups were needed previously. This eliminates the need to handle cases of rsbtbl and dirtbl being out of sync. In many cases there will be memory savings because the dir hash table no longer exists. Signed-off-by: David Teigland <teigland@redhat.com> 2012-05-10 15:18:07 +00:00			`void dlm_recover_dir_nodeid(struct dlm_ls *ls);`
fs: dlm: get recovery sequence number as parameter This patch removes a read of the ls->ls_recover_seq uint64_t number in _create_rcom(). If the ls->ls_recover_seq is readed the ls_recover_lock need to held. However this number was always readed before when any rcom message is received and it's not necessary to read it again from a per lockspace variable to use it for the replying message. This patch will pass the sequence number as parameter so another read of ls->ls_recover_seq and holding the ls->ls_recover_lock is not required. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> 2023-08-01 18:09:45 +00:00			`int dlm_recover_directory(struct dlm_ls *ls, uint64_t seq);`
fs: dlm: constify receive buffer The dlm receive buffer should be never manipulated as DLM is the last instance of parsing layer. This patch constify the whole receive buffer so we are sure it never gets manipulated when it's being parsed. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> 2023-08-01 18:09:48 +00:00			`void dlm_copy_master_names(struct dlm_ls ls, const char inbuf, int inlen,`
			`char *outbuf, int outlen, int nodeid);`
[DLM] The core of the DLM for GFS2/CLVM This is the core of the distributed lock manager which is required to use GFS2 as a cluster filesystem. It is also used by CLVM and can be used as a standalone lock manager independantly of either of these two projects. It implements VAX-style locking modes. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steve Whitehouse <swhiteho@redhat.com> 2006-01-18 09:30:29 +00:00
			`#endif /* __DIR_DOT_H__ */`