2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #ifndef __INODE_DOT_H__
11 #define __INODE_DOT_H__
14 #include <linux/buffer_head.h>
18 extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
19 extern int gfs2_internal_read(struct gfs2_inode *ip,
20 char *buf, loff_t *pos, unsigned size);
21 extern void gfs2_set_aops(struct inode *inode);
23 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
28 static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
30 return ip->i_diskflags & GFS2_DIF_JDATA;
33 static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
35 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
36 return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
39 static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
41 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
42 return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
45 static inline int gfs2_is_dir(const struct gfs2_inode *ip)
47 return S_ISDIR(ip->i_inode.i_mode);
50 static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
52 inode->i_blocks = blocks <<
53 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
56 static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
58 return inode->i_blocks >>
59 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
62 static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
64 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
65 change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
66 inode->i_blocks += change;
69 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
72 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
75 static inline void gfs2_inum_out(const struct gfs2_inode *ip,
76 struct gfs2_dirent *dent)
78 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
79 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
82 static inline int gfs2_check_internal_file_size(struct inode *inode,
83 u64 minsize, u64 maxsize)
85 u64 size = i_size_read(inode);
86 if (size < minsize || size > maxsize)
88 if (size & (BIT(inode->i_blkbits) - 1))
92 gfs2_consist_inode(GFS2_I(inode));
96 extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
97 u64 no_addr, u64 no_formal_ino,
98 unsigned int blktype);
99 extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
101 unsigned int blktype);
103 extern int gfs2_inode_refresh(struct gfs2_inode *ip);
105 extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
107 extern int gfs2_permission(struct inode *inode, int mask);
108 extern int gfs2_setattr_simple(struct inode *inode, struct iattr *attr);
109 extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
110 extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
111 extern int gfs2_open_common(struct inode *inode, struct file *file);
112 extern loff_t gfs2_seek_data(struct file *file, loff_t offset);
113 extern loff_t gfs2_seek_hole(struct file *file, loff_t offset);
115 extern const struct inode_operations gfs2_file_iops;
116 extern const struct inode_operations gfs2_dir_iops;
117 extern const struct inode_operations gfs2_symlink_iops;
118 extern const struct file_operations gfs2_file_fops_nolock;
119 extern const struct file_operations gfs2_dir_fops_nolock;
121 extern void gfs2_set_inode_flags(struct inode *inode);
123 #ifdef CONFIG_GFS2_FS_LOCKING_DLM
124 extern const struct file_operations gfs2_file_fops;
125 extern const struct file_operations gfs2_dir_fops;
127 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
129 return sdp->sd_args.ar_localflocks;
131 #else /* Single node only */
132 #define gfs2_file_fops gfs2_file_fops_nolock
133 #define gfs2_dir_fops gfs2_dir_fops_nolock
135 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
139 #endif /* CONFIG_GFS2_FS_LOCKING_DLM */
141 #endif /* __INODE_DOT_H__ */