4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/f2fs_fs.h>
13 #include <linux/buffer_head.h>
14 #include <linux/writeback.h>
19 #include <trace/events/f2fs.h>
21 void f2fs_set_inode_flags(struct inode *inode)
23 unsigned int flags = F2FS_I(inode)->i_flags;
25 inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE |
26 S_NOATIME | S_DIRSYNC);
28 if (flags & FS_SYNC_FL)
29 inode->i_flags |= S_SYNC;
30 if (flags & FS_APPEND_FL)
31 inode->i_flags |= S_APPEND;
32 if (flags & FS_IMMUTABLE_FL)
33 inode->i_flags |= S_IMMUTABLE;
34 if (flags & FS_NOATIME_FL)
35 inode->i_flags |= S_NOATIME;
36 if (flags & FS_DIRSYNC_FL)
37 inode->i_flags |= S_DIRSYNC;
40 static int do_read_inode(struct inode *inode)
42 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
43 struct f2fs_inode_info *fi = F2FS_I(inode);
44 struct page *node_page;
46 struct f2fs_inode *ri;
48 /* Check if ino is within scope */
49 if (check_nid_range(sbi, inode->i_ino)) {
50 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
51 (unsigned long) inode->i_ino);
55 node_page = get_node_page(sbi, inode->i_ino);
56 if (IS_ERR(node_page))
57 return PTR_ERR(node_page);
59 rn = page_address(node_page);
62 inode->i_mode = le16_to_cpu(ri->i_mode);
63 i_uid_write(inode, le32_to_cpu(ri->i_uid));
64 i_gid_write(inode, le32_to_cpu(ri->i_gid));
65 set_nlink(inode, le32_to_cpu(ri->i_links));
66 inode->i_size = le64_to_cpu(ri->i_size);
67 inode->i_blocks = le64_to_cpu(ri->i_blocks);
69 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
70 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
71 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
72 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
73 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
74 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
75 inode->i_generation = le32_to_cpu(ri->i_generation);
77 inode->i_rdev = old_decode_dev(le32_to_cpu(ri->i_addr[0]));
79 inode->i_rdev = new_decode_dev(le32_to_cpu(ri->i_addr[1]));
81 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
82 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
83 fi->i_flags = le32_to_cpu(ri->i_flags);
85 fi->i_advise = ri->i_advise;
86 fi->i_pino = le32_to_cpu(ri->i_pino);
87 get_extent_info(&fi->ext, ri->i_ext);
88 f2fs_put_page(node_page, 1);
92 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
94 struct f2fs_sb_info *sbi = F2FS_SB(sb);
98 inode = iget_locked(sb, ino);
100 return ERR_PTR(-ENOMEM);
102 if (!(inode->i_state & I_NEW)) {
103 trace_f2fs_iget(inode);
106 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
109 ret = do_read_inode(inode);
113 if (ino == F2FS_NODE_INO(sbi)) {
114 inode->i_mapping->a_ops = &f2fs_node_aops;
115 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
116 } else if (ino == F2FS_META_INO(sbi)) {
117 inode->i_mapping->a_ops = &f2fs_meta_aops;
118 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
119 } else if (S_ISREG(inode->i_mode)) {
120 inode->i_op = &f2fs_file_inode_operations;
121 inode->i_fop = &f2fs_file_operations;
122 inode->i_mapping->a_ops = &f2fs_dblock_aops;
123 } else if (S_ISDIR(inode->i_mode)) {
124 inode->i_op = &f2fs_dir_inode_operations;
125 inode->i_fop = &f2fs_dir_operations;
126 inode->i_mapping->a_ops = &f2fs_dblock_aops;
127 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
128 } else if (S_ISLNK(inode->i_mode)) {
129 inode->i_op = &f2fs_symlink_inode_operations;
130 inode->i_mapping->a_ops = &f2fs_dblock_aops;
131 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
132 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
133 inode->i_op = &f2fs_special_inode_operations;
134 init_special_inode(inode, inode->i_mode, inode->i_rdev);
139 unlock_new_inode(inode);
140 trace_f2fs_iget(inode);
145 trace_f2fs_iget_exit(inode, ret);
149 void update_inode(struct inode *inode, struct page *node_page)
151 struct f2fs_node *rn;
152 struct f2fs_inode *ri;
154 wait_on_page_writeback(node_page);
156 rn = page_address(node_page);
159 ri->i_mode = cpu_to_le16(inode->i_mode);
160 ri->i_advise = F2FS_I(inode)->i_advise;
161 ri->i_uid = cpu_to_le32(i_uid_read(inode));
162 ri->i_gid = cpu_to_le32(i_gid_read(inode));
163 ri->i_links = cpu_to_le32(inode->i_nlink);
164 ri->i_size = cpu_to_le64(i_size_read(inode));
165 ri->i_blocks = cpu_to_le64(inode->i_blocks);
166 set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
168 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
169 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
170 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
171 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
172 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
173 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
174 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
175 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
176 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
177 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
178 ri->i_generation = cpu_to_le32(inode->i_generation);
180 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
181 if (old_valid_dev(inode->i_rdev)) {
183 cpu_to_le32(old_encode_dev(inode->i_rdev));
188 cpu_to_le32(new_encode_dev(inode->i_rdev));
193 set_cold_node(inode, node_page);
194 set_page_dirty(node_page);
195 clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
198 int update_inode_page(struct inode *inode)
200 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
201 struct page *node_page;
203 node_page = get_node_page(sbi, inode->i_ino);
204 if (IS_ERR(node_page))
205 return PTR_ERR(node_page);
207 update_inode(inode, node_page);
208 f2fs_put_page(node_page, 1);
212 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
214 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
217 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
218 inode->i_ino == F2FS_META_INO(sbi))
221 if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
225 f2fs_balance_fs(sbi);
228 * We need to lock here to prevent from producing dirty node pages
229 * during the urgent cleaning time when runing out of free sections.
231 ilock = mutex_lock_op(sbi);
232 ret = update_inode_page(inode);
233 mutex_unlock_op(sbi, ilock);
238 * Called at the last iput() if i_nlink is zero
240 void f2fs_evict_inode(struct inode *inode)
242 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
245 trace_f2fs_evict_inode(inode);
246 truncate_inode_pages(&inode->i_data, 0);
248 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
249 inode->i_ino == F2FS_META_INO(sbi))
252 BUG_ON(atomic_read(&F2FS_I(inode)->dirty_dents));
253 remove_dirty_dir_inode(inode);
255 if (inode->i_nlink || is_bad_inode(inode))
258 sb_start_intwrite(inode->i_sb);
259 set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
260 i_size_write(inode, 0);
262 if (F2FS_HAS_BLOCKS(inode))
263 f2fs_truncate(inode);
265 ilock = mutex_lock_op(sbi);
266 remove_inode_page(inode);
267 mutex_unlock_op(sbi, ilock);
269 sb_end_intwrite(inode->i_sb);