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 void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
42 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
43 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
45 inode->i_rdev = old_decode_dev(le32_to_cpu(ri->i_addr[0]));
47 inode->i_rdev = new_decode_dev(le32_to_cpu(ri->i_addr[1]));
51 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
53 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
54 if (old_valid_dev(inode->i_rdev)) {
55 ri->i_addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev));
59 ri->i_addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev));
65 static int do_read_inode(struct inode *inode)
67 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
68 struct f2fs_inode_info *fi = F2FS_I(inode);
69 struct page *node_page;
70 struct f2fs_inode *ri;
72 /* Check if ino is within scope */
73 if (check_nid_range(sbi, inode->i_ino)) {
74 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
75 (unsigned long) inode->i_ino);
79 node_page = get_node_page(sbi, inode->i_ino);
80 if (IS_ERR(node_page))
81 return PTR_ERR(node_page);
83 ri = F2FS_INODE(node_page);
85 inode->i_mode = le16_to_cpu(ri->i_mode);
86 i_uid_write(inode, le32_to_cpu(ri->i_uid));
87 i_gid_write(inode, le32_to_cpu(ri->i_gid));
88 set_nlink(inode, le32_to_cpu(ri->i_links));
89 inode->i_size = le64_to_cpu(ri->i_size);
90 inode->i_blocks = le64_to_cpu(ri->i_blocks);
92 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
93 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
94 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
95 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
96 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
97 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
98 inode->i_generation = le32_to_cpu(ri->i_generation);
100 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
101 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
102 fi->i_flags = le32_to_cpu(ri->i_flags);
104 fi->i_advise = ri->i_advise;
105 fi->i_pino = le32_to_cpu(ri->i_pino);
107 get_extent_info(&fi->ext, ri->i_ext);
108 get_inline_info(fi, ri);
110 /* get rdev by using inline_info */
111 __get_inode_rdev(inode, ri);
113 f2fs_put_page(node_page, 1);
117 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
119 struct f2fs_sb_info *sbi = F2FS_SB(sb);
123 inode = iget_locked(sb, ino);
125 return ERR_PTR(-ENOMEM);
127 if (!(inode->i_state & I_NEW)) {
128 trace_f2fs_iget(inode);
131 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
134 ret = do_read_inode(inode);
138 if (ino == F2FS_NODE_INO(sbi)) {
139 inode->i_mapping->a_ops = &f2fs_node_aops;
140 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
141 } else if (ino == F2FS_META_INO(sbi)) {
142 inode->i_mapping->a_ops = &f2fs_meta_aops;
143 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
144 } else if (S_ISREG(inode->i_mode)) {
145 inode->i_op = &f2fs_file_inode_operations;
146 inode->i_fop = &f2fs_file_operations;
147 inode->i_mapping->a_ops = &f2fs_dblock_aops;
148 } else if (S_ISDIR(inode->i_mode)) {
149 inode->i_op = &f2fs_dir_inode_operations;
150 inode->i_fop = &f2fs_dir_operations;
151 inode->i_mapping->a_ops = &f2fs_dblock_aops;
152 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
153 } else if (S_ISLNK(inode->i_mode)) {
154 inode->i_op = &f2fs_symlink_inode_operations;
155 inode->i_mapping->a_ops = &f2fs_dblock_aops;
156 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
157 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
158 inode->i_op = &f2fs_special_inode_operations;
159 init_special_inode(inode, inode->i_mode, inode->i_rdev);
164 unlock_new_inode(inode);
165 trace_f2fs_iget(inode);
170 trace_f2fs_iget_exit(inode, ret);
174 void update_inode(struct inode *inode, struct page *node_page)
176 struct f2fs_inode *ri;
178 f2fs_wait_on_page_writeback(node_page, NODE, false);
180 ri = F2FS_INODE(node_page);
182 ri->i_mode = cpu_to_le16(inode->i_mode);
183 ri->i_advise = F2FS_I(inode)->i_advise;
184 ri->i_uid = cpu_to_le32(i_uid_read(inode));
185 ri->i_gid = cpu_to_le32(i_gid_read(inode));
186 ri->i_links = cpu_to_le32(inode->i_nlink);
187 ri->i_size = cpu_to_le64(i_size_read(inode));
188 ri->i_blocks = cpu_to_le64(inode->i_blocks);
189 set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
190 set_raw_inline(F2FS_I(inode), ri);
192 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
193 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
194 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
195 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
196 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
197 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
198 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
199 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
200 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
201 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
202 ri->i_generation = cpu_to_le32(inode->i_generation);
204 __set_inode_rdev(inode, ri);
205 set_cold_node(inode, node_page);
206 set_page_dirty(node_page);
208 clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
211 int update_inode_page(struct inode *inode)
213 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
214 struct page *node_page;
216 node_page = get_node_page(sbi, inode->i_ino);
217 if (IS_ERR(node_page))
218 return PTR_ERR(node_page);
220 update_inode(inode, node_page);
221 f2fs_put_page(node_page, 1);
225 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
227 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
230 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
231 inode->i_ino == F2FS_META_INO(sbi))
234 if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
238 * We need to lock here to prevent from producing dirty node pages
239 * during the urgent cleaning time when runing out of free sections.
242 ret = update_inode_page(inode);
246 f2fs_balance_fs(sbi);
252 * Called at the last iput() if i_nlink is zero
254 void f2fs_evict_inode(struct inode *inode)
256 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
258 trace_f2fs_evict_inode(inode);
259 truncate_inode_pages(&inode->i_data, 0);
261 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
262 inode->i_ino == F2FS_META_INO(sbi))
265 f2fs_bug_on(atomic_read(&F2FS_I(inode)->dirty_dents));
266 remove_dirty_dir_inode(inode);
268 if (inode->i_nlink || is_bad_inode(inode))
271 sb_start_intwrite(inode->i_sb);
272 set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
273 i_size_write(inode, 0);
275 if (F2FS_HAS_BLOCKS(inode))
276 f2fs_truncate(inode);
279 remove_inode_page(inode);
282 sb_end_intwrite(inode->i_sb);