[deliverable/linux.git] / drivers / staging / lustre / lustre / include / linux / lustre_compat25.h

/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * 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 version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright (c) 2011, 2012, Intel Corporation.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 */

#ifndef _LINUX_COMPAT25_H
#define _LINUX_COMPAT25_H

#include <linux/fs_struct.h>
#include <linux/namei.h>

#include "lustre_patchless_compat.h"

# define LOCK_FS_STRUCT(fs)	spin_lock(&(fs)->lock)
# define UNLOCK_FS_STRUCT(fs)	spin_unlock(&(fs)->lock)

static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
				 struct dentry *dentry)
{
	struct path path;
	struct path old_pwd;

	path.mnt = mnt;
	path.dentry = dentry;
	LOCK_FS_STRUCT(fs);
	old_pwd = fs->pwd;
	path_get(&path);
	fs->pwd = path;
	UNLOCK_FS_STRUCT(fs);

	if (old_pwd.dentry)
		path_put(&old_pwd);
}


/*
 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
 * ATTR_* attributes (see bug 13828)
 */
#define ATTR_BLOCKS    (1 << 27)

#define current_ngroups current_cred()->group_info->ngroups
#define current_groups current_cred()->group_info->small_block

/*
 * OBD need working random driver, thus all our
 * initialization routines must be called after device
 * driver initialization
 */
#ifndef MODULE
#undef module_init
#define module_init(a)     late_initcall(a)
#endif


#define LTIME_S(time)		   (time.tv_sec)

/* inode_dio_wait(i) use as-is for write lock */
# define inode_dio_write_done(i)	do {} while (0) /* for write unlock */
# define inode_dio_read(i)		atomic_inc(&(i)->i_dio_count)
/* inode_dio_done(i) use as-is for read unlock */

#define TREE_READ_LOCK_IRQ(mapping)	spin_lock_irq(&(mapping)->tree_lock)
#define TREE_READ_UNLOCK_IRQ(mapping)	spin_unlock_irq(&(mapping)->tree_lock)

#ifndef FS_HAS_FIEMAP
#define FS_HAS_FIEMAP			(0)
#endif

#define ll_vfs_rmdir(dir, entry, mnt)	     vfs_rmdir(dir, entry)
#define ll_vfs_mkdir(inode, dir, mnt, mode)	vfs_mkdir(inode, dir, mode)
#define ll_vfs_link(old, mnt, dir, new, mnt1)       vfs_link(old, dir, new)
#define ll_vfs_unlink(inode, entry, mnt)	  vfs_unlink(inode, entry)
#define ll_vfs_mknod(dir, entry, mnt, mode, dev) \
		     vfs_mknod(dir, entry, mode, dev)
#define ll_security_inode_unlink(dir, entry, mnt) \
				 security_inode_unlink(dir, entry)
#define ll_vfs_rename(old, old_dir, mnt, new, new_dir, mnt1) \
		vfs_rename(old, old_dir, new, new_dir, NULL, 0)

#define cfs_bio_io_error(a, b)   bio_io_error((a))
#define cfs_bio_endio(a, b, c)    bio_endio((a), (c))

#define cfs_fs_pwd(fs)       ((fs)->pwd.dentry)
#define cfs_fs_mnt(fs)       ((fs)->pwd.mnt)
#define cfs_path_put(nd)     path_put(&(nd)->path)


#ifndef SLAB_DESTROY_BY_RCU
#define SLAB_DESTROY_BY_RCU 0
#endif


static inline int
ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
{
	int rc;

	if (sb->s_qcop->quota_on) {
		struct path path;

		rc = kern_path(name, LOOKUP_FOLLOW, &path);
		if (!rc)
			return rc;
		rc = sb->s_qcop->quota_on(sb, off, ver
					    , &path
					   );
		path_put(&path);
		return rc;
	}
	else
		return -ENOSYS;
}

static inline int ll_quota_off(struct super_block *sb, int off, int remount)
{
	if (sb->s_qcop->quota_off) {
		return sb->s_qcop->quota_off(sb, off
					    );
	}
	else
		return -ENOSYS;
}


# define ll_vfs_dq_init	     dquot_initialize
# define ll_vfs_dq_drop	     dquot_drop
# define ll_vfs_dq_transfer	 dquot_transfer
# define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)


#define queue_max_phys_segments(rq)       queue_max_segments(rq)
#define queue_max_hw_segments(rq)	 queue_max_segments(rq)


#define ll_d_hlist_node hlist_node
#define ll_d_hlist_empty(list) hlist_empty(list)
#define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
#define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
#define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
	p = NULL; hlist_for_each_entry(dentry, i_dentry, alias)


#define bio_hw_segments(q, bio) 0


#define ll_pagevec_init(pv, cold)       do {} while (0)
#define ll_pagevec_add(pv, pg)	  (0)
#define ll_pagevec_lru_add_file(pv)     do {} while (0)


#ifndef QUOTA_OK
# define QUOTA_OK 0
#endif
#ifndef NO_QUOTA
# define NO_QUOTA (-EDQUOT)
#endif

#ifndef SEEK_DATA
#define SEEK_DATA      3       /* seek to the next data */
#endif
#ifndef SEEK_HOLE
#define SEEK_HOLE      4       /* seek to the next hole */
#endif

#ifndef FMODE_UNSIGNED_OFFSET
#define FMODE_UNSIGNED_OFFSET	((__force fmode_t)0x2000)
#endif

#if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
# define ext2_set_bit	     __test_and_set_bit_le
# define ext2_clear_bit	   __test_and_clear_bit_le
# define ext2_test_bit	    test_bit_le
# define ext2_find_first_zero_bit find_first_zero_bit_le
# define ext2_find_next_zero_bit  find_next_zero_bit_le
#endif

#ifdef ATTR_TIMES_SET
# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
#else
# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
#endif


/*
 * After 3.1, kernel's nameidata.intent.open.flags is different
 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
 * */
#include <linux/version.h>
static inline int ll_namei_to_lookup_intent_flag(int flag)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
	flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
#endif
	return flag;
}

#include <linux/fs.h>

# define ll_umode_t	umode_t

#include <linux/dcache.h>

# define ll_dirty_inode(inode, flag)	(inode)->i_sb->s_op->dirty_inode((inode), flag)

#endif /* _COMPAT25_H */
Commit	Line	Data
d7e09d03 PT	1	/*
	2	* GPL HEADER START
	3	*
	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 only,
	8	* as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License version 2 for more details (a copy is included
	14	* in the LICENSE file that accompanied this code).
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* version 2 along with this program; If not, see
	18	* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
	19	*
	20	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	21	* CA 95054 USA or visit www.sun.com if you need additional information or
	22	* have any questions.
	23	*
	24	* GPL HEADER END
	25	*/
	26	/*
	27	* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
	28	* Use is subject to license terms.
	29	*
	30	* Copyright (c) 2011, 2012, Intel Corporation.
	31	*/
	32	/*
	33	* This file is part of Lustre, http://www.lustre.org/
	34	* Lustre is a trademark of Sun Microsystems, Inc.
	35	*/
	36
	37	#ifndef _LINUX_COMPAT25_H
	38	#define _LINUX_COMPAT25_H
	39
	40	#include <linux/fs_struct.h>
	41	#include <linux/namei.h>
d7e09d03	42
1accaadf	43	#include "lustre_patchless_compat.h"
d7e09d03 PT	44
	45	# define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
	46	# define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
	47
	48	static inline void ll_set_fs_pwd(struct fs_struct fs, struct vfsmount mnt,
	49	struct dentry *dentry)
	50	{
	51	struct path path;
	52	struct path old_pwd;
	53
	54	path.mnt = mnt;
	55	path.dentry = dentry;
	56	LOCK_FS_STRUCT(fs);
	57	old_pwd = fs->pwd;
	58	path_get(&path);
	59	fs->pwd = path;
	60	UNLOCK_FS_STRUCT(fs);
	61
	62	if (old_pwd.dentry)
	63	path_put(&old_pwd);
	64	}
	65
	66
	67	/*
	68	* set ATTR_BLOCKS to a high value to avoid any risk of collision with other
	69	* ATTR_* attributes (see bug 13828)
	70	*/
	71	#define ATTR_BLOCKS (1 << 27)
	72
	73	#define current_ngroups current_cred()->group_info->ngroups
	74	#define current_groups current_cred()->group_info->small_block
	75
	76	/*
	77	* OBD need working random driver, thus all our
	78	* initialization routines must be called after device
	79	* driver initialization
	80	*/
	81	#ifndef MODULE
	82	#undef module_init
	83	#define module_init(a) late_initcall(a)
	84	#endif
	85
	86
	87	#define LTIME_S(time) (time.tv_sec)
	88
d7e09d03 PT	89	/* inode_dio_wait(i) use as-is for write lock */
	90	# define inode_dio_write_done(i) do {} while (0) /* for write unlock */
	91	# define inode_dio_read(i) atomic_inc(&(i)->i_dio_count)
	92	/* inode_dio_done(i) use as-is for read unlock */
	93
	94	#define TREE_READ_LOCK_IRQ(mapping) spin_lock_irq(&(mapping)->tree_lock)
	95	#define TREE_READ_UNLOCK_IRQ(mapping) spin_unlock_irq(&(mapping)->tree_lock)
	96
d7e09d03 PT	97	#ifndef FS_HAS_FIEMAP
	98	#define FS_HAS_FIEMAP (0)
	99	#endif
	100
1d8cb70c GD	101	#define ll_vfs_rmdir(dir, entry, mnt) vfs_rmdir(dir, entry)
	102	#define ll_vfs_mkdir(inode, dir, mnt, mode) vfs_mkdir(inode, dir, mode)
	103	#define ll_vfs_link(old, mnt, dir, new, mnt1) vfs_link(old, dir, new)
	104	#define ll_vfs_unlink(inode, entry, mnt) vfs_unlink(inode, entry)
	105	#define ll_vfs_mknod(dir, entry, mnt, mode, dev) \
	106	vfs_mknod(dir, entry, mode, dev)
	107	#define ll_security_inode_unlink(dir, entry, mnt) \
	108	security_inode_unlink(dir, entry)
520c8b16 MS	109	#define ll_vfs_rename(old, old_dir, mnt, new, new_dir, mnt1) \
520c8b16 MS	110	vfs_rename(old, old_dir, new, new_dir, NULL, 0)
d7e09d03	111
1d8cb70c GD	112	#define cfs_bio_io_error(a, b) bio_io_error((a))
1d8cb70c GD	113	#define cfs_bio_endio(a, b, c) bio_endio((a), (c))
d7e09d03 PT	114
	115	#define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
	116	#define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
	117	#define cfs_path_put(nd) path_put(&(nd)->path)
	118
	119
	120	#ifndef SLAB_DESTROY_BY_RCU
	121	#define SLAB_DESTROY_BY_RCU 0
	122	#endif
	123
	124
	125
	126	static inline int
	127	ll_quota_on(struct super_block sb, int off, int ver, char name, int remount)
	128	{
	129	int rc;
	130
	131	if (sb->s_qcop->quota_on) {
	132	struct path path;
	133
	134	rc = kern_path(name, LOOKUP_FOLLOW, &path);
	135	if (!rc)
	136	return rc;
	137	rc = sb->s_qcop->quota_on(sb, off, ver
	138	, &path
	139	);
	140	path_put(&path);
	141	return rc;
	142	}
	143	else
	144	return -ENOSYS;
	145	}
	146
	147	static inline int ll_quota_off(struct super_block *sb, int off, int remount)
	148	{
	149	if (sb->s_qcop->quota_off) {
	150	return sb->s_qcop->quota_off(sb, off
	151	);
	152	}
	153	else
	154	return -ENOSYS;
	155	}
	156
	157
	158	# define ll_vfs_dq_init dquot_initialize
	159	# define ll_vfs_dq_drop dquot_drop
	160	# define ll_vfs_dq_transfer dquot_transfer
	161	# define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
	162
	163
	164
	165
	166
	167	#define queue_max_phys_segments(rq) queue_max_segments(rq)
	168	#define queue_max_hw_segments(rq) queue_max_segments(rq)
	169
d7e09d03 PT	170
	171	#define ll_d_hlist_node hlist_node
	172	#define ll_d_hlist_empty(list) hlist_empty(list)
	173	#define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
	174	#define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
	175	#define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
	176	p = NULL; hlist_for_each_entry(dentry, i_dentry, alias)
	177
	178
	179	#define bio_hw_segments(q, bio) 0
	180
	181
	182	#define ll_pagevec_init(pv, cold) do {} while (0)
	183	#define ll_pagevec_add(pv, pg) (0)
	184	#define ll_pagevec_lru_add_file(pv) do {} while (0)
	185
	186
	187	#ifndef QUOTA_OK
	188	# define QUOTA_OK 0
	189	#endif
	190	#ifndef NO_QUOTA
	191	# define NO_QUOTA (-EDQUOT)
	192	#endif
	193
	194	#ifndef SEEK_DATA
	195	#define SEEK_DATA 3 /* seek to the next data */
	196	#endif
	197	#ifndef SEEK_HOLE
	198	#define SEEK_HOLE 4 /* seek to the next hole */
	199	#endif
	200
	201	#ifndef FMODE_UNSIGNED_OFFSET
	202	#define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
	203	#endif
	204
	205	#if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
	206	# define ext2_set_bit __test_and_set_bit_le
	207	# define ext2_clear_bit __test_and_clear_bit_le
	208	# define ext2_test_bit test_bit_le
	209	# define ext2_find_first_zero_bit find_first_zero_bit_le
	210	# define ext2_find_next_zero_bit find_next_zero_bit_le
	211	#endif
	212
	213	#ifdef ATTR_TIMES_SET
	214	# define TIMES_SET_FLAGS (ATTR_MTIME_SET \| ATTR_ATIME_SET \| ATTR_TIMES_SET)
	215	#else
	216	# define TIMES_SET_FLAGS (ATTR_MTIME_SET \| ATTR_ATIME_SET)
	217	#endif
	218
	219
	220
	221	/*
	222	* After 3.1, kernel's nameidata.intent.open.flags is different
	223	* with lustre's lookup_intent.it_flags, as lustre's it_flags'
	224	* lower bits equal to FMODE_xxx while kernel doesn't transliterate
	225	* lower bits of nameidata.intent.open.flags to FMODE_xxx.
	226	* */
	227	#include <linux/version.h>
	228	static inline int ll_namei_to_lookup_intent_flag(int flag)
	229	{
	230	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
	231	flag = (flag & ~O_ACCMODE) \| OPEN_FMODE(flag);
	232	#endif
	233	return flag;
234	}
235
d7e09d03 PT	236	#include <linux/fs.h>
	237
	238	# define ll_umode_t umode_t
	239
	240	#include <linux/dcache.h>
	241
	242	# define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
	243
	244	#endif /* _COMPAT25_H */