[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / xfs / linux-2.6 / xfs_fs_subr.c

/*
 * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */

#include "xfs.h"

/*
 * Stub for no-op vnode operations that return error status.
 */
int
fs_noerr(void)
{
	return 0;
}

/*
 * Operation unsupported under this file system.
 */
int
fs_nosys(void)
{
	return ENOSYS;
}

/*
 * Stub for inactive, strategy, and read/write lock/unlock.  Does nothing.
 */
/* ARGSUSED */
void
fs_noval(void)
{
}

/*
 * vnode pcache layer for vnode_tosspages.
 * 'last' parameter unused but left in for IRIX compatibility
 */
void
fs_tosspages(
	bhv_desc_t	*bdp,
	xfs_off_t	first,
	xfs_off_t	last,
	int		fiopt)
{
	vnode_t		*vp = BHV_TO_VNODE(bdp);
	struct inode	*ip = LINVFS_GET_IP(vp);

	if (VN_CACHED(vp))
		truncate_inode_pages(ip->i_mapping, first);
}


/*
 * vnode pcache layer for vnode_flushinval_pages.
 * 'last' parameter unused but left in for IRIX compatibility
 */
void
fs_flushinval_pages(
	bhv_desc_t	*bdp,
	xfs_off_t	first,
	xfs_off_t	last,
	int		fiopt)
{
	vnode_t		*vp = BHV_TO_VNODE(bdp);
	struct inode	*ip = LINVFS_GET_IP(vp);

	if (VN_CACHED(vp)) {
		filemap_fdatawrite(ip->i_mapping);
		filemap_fdatawait(ip->i_mapping);

		truncate_inode_pages(ip->i_mapping, first);
	}
}

/*
 * vnode pcache layer for vnode_flush_pages.
 * 'last' parameter unused but left in for IRIX compatibility
 */
int
fs_flush_pages(
	bhv_desc_t	*bdp,
	xfs_off_t	first,
	xfs_off_t	last,
	uint64_t	flags,
	int		fiopt)
{
	vnode_t		*vp = BHV_TO_VNODE(bdp);
	struct inode	*ip = LINVFS_GET_IP(vp);

	if (VN_CACHED(vp)) {
		filemap_fdatawrite(ip->i_mapping);
		if (flags & XFS_B_ASYNC)
			return 0;
		filemap_fdatawait(ip->i_mapping);
	}

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of version 2 of the GNU General Public License as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it would be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	11	*
	12	* Further, this software is distributed without any warranty that it is
	13	* free of the rightful claim of any third person regarding infringement
	14	* or the like. Any license provided herein, whether implied or
	15	* otherwise, applies only to this software file. Patent licenses, if
	16	* any, provided herein do not apply to combinations of this program with
	17	* other software, or any other product whatsoever.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write the Free Software Foundation, Inc., 59
	21	* Temple Place - Suite 330, Boston MA 02111-1307, USA.
	22	*
	23	* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
	24	* Mountain View, CA 94043, or:
	25	*
	26	* http://www.sgi.com
	27	*
	28	* For further information regarding this notice, see:
	29	*
	30	* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
	31	*/
	32
	33	#include "xfs.h"
	34
	35	/*
	36	* Stub for no-op vnode operations that return error status.
	37	*/
	38	int
	39	fs_noerr(void)
	40	{
	41	return 0;
	42	}
	43
	44	/*
	45	* Operation unsupported under this file system.
	46	*/
	47	int
	48	fs_nosys(void)
	49	{
	50	return ENOSYS;
	51	}
	52
	53	/*
	54	* Stub for inactive, strategy, and read/write lock/unlock. Does nothing.
	55	*/
	56	/* ARGSUSED */
	57	void
	58	fs_noval(void)
	59	{
	60	}
	61
	62	/*
	63	* vnode pcache layer for vnode_tosspages.
	64	* 'last' parameter unused but left in for IRIX compatibility
65	*/
66	void
67	fs_tosspages(
68	bhv_desc_t *bdp,
69	xfs_off_t first,
70	xfs_off_t last,
71	int fiopt)
72	{
73	vnode_t *vp = BHV_TO_VNODE(bdp);
74	struct inode *ip = LINVFS_GET_IP(vp);
75
76	if (VN_CACHED(vp))
77	truncate_inode_pages(ip->i_mapping, first);
78	}
79
80
81	/*
82	* vnode pcache layer for vnode_flushinval_pages.
83	* 'last' parameter unused but left in for IRIX compatibility
84	*/
85	void
86	fs_flushinval_pages(
87	bhv_desc_t *bdp,
88	xfs_off_t first,
89	xfs_off_t last,
90	int fiopt)
91	{
92	vnode_t *vp = BHV_TO_VNODE(bdp);
93	struct inode *ip = LINVFS_GET_IP(vp);
94
95	if (VN_CACHED(vp)) {
96	filemap_fdatawrite(ip->i_mapping);
97	filemap_fdatawait(ip->i_mapping);
98
99	truncate_inode_pages(ip->i_mapping, first);
100	}
101	}
102
103	/*
104	* vnode pcache layer for vnode_flush_pages.
105	* 'last' parameter unused but left in for IRIX compatibility
106	*/
107	int
108	fs_flush_pages(
109	bhv_desc_t *bdp,
110	xfs_off_t first,
111	xfs_off_t last,
112	uint64_t flags,
113	int fiopt)
114	{
115	vnode_t *vp = BHV_TO_VNODE(bdp);
116	struct inode *ip = LINVFS_GET_IP(vp);
117
118	if (VN_CACHED(vp)) {
119	filemap_fdatawrite(ip->i_mapping);
ee34807a NS	120	if (flags & XFS_B_ASYNC)
ee34807a NS	121	return 0;
1da177e4 LT	122	filemap_fdatawait(ip->i_mapping);
	123	}
	124
	125	return 0;
	126	}