1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
7 #ifndef __INODE_DOT_H__
8 #define __INODE_DOT_H__
11 #include <linux/buffer_head.h>
15 extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
16 extern int gfs2_internal_read(struct gfs2_inode *ip,
17 char *buf, loff_t *pos, unsigned size);
18 extern void gfs2_set_aops(struct inode *inode);
20 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
25 static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
27 return ip->i_diskflags & GFS2_DIF_JDATA;
30 static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
32 return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
35 static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
37 return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
40 static inline int gfs2_is_dir(const struct gfs2_inode *ip)
42 return S_ISDIR(ip->i_inode.i_mode);
45 static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
47 inode->i_blocks = blocks <<
48 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
51 static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
53 return inode->i_blocks >>
54 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
57 static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
59 change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT;
60 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
61 inode->i_blocks += change;
64 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
67 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
70 static inline void gfs2_inum_out(const struct gfs2_inode *ip,
71 struct gfs2_dirent *dent)
73 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
74 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
77 static inline int gfs2_check_internal_file_size(struct inode *inode,
78 u64 minsize, u64 maxsize)
80 u64 size = i_size_read(inode);
81 if (size < minsize || size > maxsize)
83 if (size & (BIT(inode->i_blkbits) - 1))
87 gfs2_consist_inode(GFS2_I(inode));
91 extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
92 u64 no_addr, u64 no_formal_ino,
93 unsigned int blktype);
94 extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
96 unsigned int blktype);
98 extern int gfs2_inode_refresh(struct gfs2_inode *ip);
100 extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
102 extern int gfs2_permission(struct user_namespace *mnt_userns,
103 struct inode *inode, int mask);
104 extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
105 extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
106 extern int gfs2_open_common(struct inode *inode, struct file *file);
107 extern loff_t gfs2_seek_data(struct file *file, loff_t offset);
108 extern loff_t gfs2_seek_hole(struct file *file, loff_t offset);
110 extern const struct file_operations gfs2_file_fops_nolock;
111 extern const struct file_operations gfs2_dir_fops_nolock;
113 extern int gfs2_fileattr_get(struct dentry *dentry, struct fileattr *fa);
114 extern int gfs2_fileattr_set(struct user_namespace *mnt_userns,
115 struct dentry *dentry, struct fileattr *fa);
116 extern void gfs2_set_inode_flags(struct inode *inode);
118 #ifdef CONFIG_GFS2_FS_LOCKING_DLM
119 extern const struct file_operations gfs2_file_fops;
120 extern const struct file_operations gfs2_dir_fops;
122 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
124 return sdp->sd_args.ar_localflocks;
126 #else /* Single node only */
127 #define gfs2_file_fops gfs2_file_fops_nolock
128 #define gfs2_dir_fops gfs2_dir_fops_nolock
130 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
134 #endif /* CONFIG_GFS2_FS_LOCKING_DLM */
136 #endif /* __INODE_DOT_H__ */