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gerrit-public.fairphone.software / kernel / msm / 16b374ca439fb406e46e071f75428f5b033056f8 / . / fs / gfs2 / inode.h
blob: 300ada3f21de0cf5fc22677283343a76caf8200e [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -0400[diff] [blame]3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400[diff] [blame]7 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]8 */
9
10#ifndef __INODE_DOT_H__
11#define __INODE_DOT_H__
12
Steven Whitehouseb2760582008-10-14 16:05:55 +0100[diff] [blame]13#include <linux/fs.h>
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]14#include <linux/buffer_head.h>
15#include <linux/mm.h>
Steven Whitehouse77658aa2008-02-12 14:17:27 +0000[diff] [blame]16#include "util.h"
17
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]18extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
19extern int gfs2_internal_read(struct gfs2_inode *ip,
20 struct file_ra_state *ra_state,
21 char *buf, loff_t *pos, unsigned size);
22extern void gfs2_set_aops(struct inode *inode);
23
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100[diff] [blame]24static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]25{
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000[diff] [blame]26 return !ip->i_height;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]27}
28
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100[diff] [blame]29static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]30{
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000[diff] [blame]31 return ip->i_diskflags & GFS2_DIF_JDATA;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]32}
33
Steven Whitehousebf36a712007-10-17 08:35:19 +0100[diff] [blame]34static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
35{
36 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
37 return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
38}
39
Steven Whitehouse55610932007-10-17 08:47:38 +0100[diff] [blame]40static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
41{
42 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
43 return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
44}
45
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100[diff] [blame]46static inline int gfs2_is_dir(const struct gfs2_inode *ip)
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000[diff] [blame]47{
Steven Whitehouseb60623c2006-11-01 12:22:46 -0500[diff] [blame]48 return S_ISDIR(ip->i_inode.i_mode);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000[diff] [blame]49}
50
Steven Whitehouse77658aa2008-02-12 14:17:27 +0000[diff] [blame]51static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
Steven Whitehouse9e2dbda2006-11-08 15:45:46 -0500[diff] [blame]52{
Steven Whitehouse77658aa2008-02-12 14:17:27 +0000[diff] [blame]53 inode->i_blocks = blocks <<
Steven Whitehouse9e2dbda2006-11-08 15:45:46 -0500[diff] [blame]54 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
55}
56
Steven Whitehouse77658aa2008-02-12 14:17:27 +0000[diff] [blame]57static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
58{
59 return inode->i_blocks >>
60 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
61}
62
63static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
64{
65 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
66 change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
67 inode->i_blocks += change;
68}
69
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100[diff] [blame]70static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
71 u64 no_formal_ino)
72{
73 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
74}
75
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100[diff] [blame]76static inline void gfs2_inum_out(const struct gfs2_inode *ip,
77 struct gfs2_dirent *dent)
78{
79 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
80 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
81}
82
83
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]84extern void gfs2_set_iop(struct inode *inode);
85extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
Bob Peterson1a0eae82010-04-14 11:58:16 -0400[diff] [blame]86 u64 no_addr, u64 no_formal_ino);
Bob Petersoned4878e2010-05-20 23:30:11 -0400[diff] [blame]87extern void gfs2_process_unlinked_inode(struct super_block *sb, u64 no_addr);
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]88extern struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]89
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]90extern int gfs2_inode_refresh(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]91
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]92extern int gfs2_dinode_dealloc(struct gfs2_inode *inode);
93extern int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
94extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
95 int is_root);
96extern struct inode *gfs2_createi(struct gfs2_holder *ghs,
97 const struct qstr *name,
98 unsigned int mode, dev_t dev);
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]99extern int gfs2_permission(struct inode *inode, int mask);
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100[diff] [blame]100extern int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr);
101extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
102extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
103extern void gfs2_dinode_print(const struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]104
Steven Whitehouseb2760582008-10-14 16:05:55 +0100[diff] [blame]105extern const struct inode_operations gfs2_file_iops;
106extern const struct inode_operations gfs2_dir_iops;
107extern const struct inode_operations gfs2_symlink_iops;
Christoph Hellwig10d21982009-04-07 19:42:17 +0200[diff] [blame]108extern const struct file_operations gfs2_file_fops_nolock;
109extern const struct file_operations gfs2_dir_fops_nolock;
Steven Whitehouseb2760582008-10-14 16:05:55 +0100[diff] [blame]110
111extern void gfs2_set_inode_flags(struct inode *inode);
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000[diff] [blame]112
113#ifdef CONFIG_GFS2_FS_LOCKING_DLM
Christoph Hellwig10d21982009-04-07 19:42:17 +0200[diff] [blame]114extern const struct file_operations gfs2_file_fops;
115extern const struct file_operations gfs2_dir_fops;
116
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000[diff] [blame]117static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
118{
119 return sdp->sd_args.ar_localflocks;
120}
121#else /* Single node only */
Christoph Hellwig10d21982009-04-07 19:42:17 +0200[diff] [blame]122#define gfs2_file_fops gfs2_file_fops_nolock
123#define gfs2_dir_fops gfs2_dir_fops_nolock
124
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000[diff] [blame]125static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
126{
127 return 1;
128}
129#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
Steven Whitehouseb2760582008-10-14 16:05:55 +0100[diff] [blame]130
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]131#endif /* __INODE_DOT_H__ */
132