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>
15 #include <linux/bitops.h>
20 #include <trace/events/f2fs.h>
22 void f2fs_set_inode_flags(struct inode *inode)
24 unsigned int flags = F2FS_I(inode)->i_flags;
25 unsigned int new_fl = 0;
27 if (flags & FS_SYNC_FL)
29 if (flags & FS_APPEND_FL)
31 if (flags & FS_IMMUTABLE_FL)
32 new_fl |= S_IMMUTABLE;
33 if (flags & FS_NOATIME_FL)
35 if (flags & FS_DIRSYNC_FL)
37 set_mask_bits(&inode->i_flags,
38 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC, new_fl);
41 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
43 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
44 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
47 old_decode_dev(le32_to_cpu(ri->i_addr[0]));
50 new_decode_dev(le32_to_cpu(ri->i_addr[1]));
54 static bool __written_first_block(struct f2fs_inode *ri)
56 if (ri->i_addr[0] != NEW_ADDR && ri->i_addr[0] != NULL_ADDR)
61 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
63 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
64 if (old_valid_dev(inode->i_rdev)) {
66 cpu_to_le32(old_encode_dev(inode->i_rdev));
71 cpu_to_le32(new_encode_dev(inode->i_rdev));
77 static void __recover_inline_status(struct inode *inode, struct page *ipage)
79 void *inline_data = inline_data_addr(ipage);
80 __le32 *start = inline_data;
81 __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
85 f2fs_wait_on_page_writeback(ipage, NODE);
87 set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
88 set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage));
89 set_page_dirty(ipage);
96 static int do_read_inode(struct inode *inode)
98 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
99 struct f2fs_inode_info *fi = F2FS_I(inode);
100 struct page *node_page;
101 struct f2fs_inode *ri;
103 /* Check if ino is within scope */
104 if (check_nid_range(sbi, inode->i_ino)) {
105 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
106 (unsigned long) inode->i_ino);
111 node_page = get_node_page(sbi, inode->i_ino);
112 if (IS_ERR(node_page))
113 return PTR_ERR(node_page);
115 ri = F2FS_INODE(node_page);
117 inode->i_mode = le16_to_cpu(ri->i_mode);
118 i_uid_write(inode, le32_to_cpu(ri->i_uid));
119 i_gid_write(inode, le32_to_cpu(ri->i_gid));
120 set_nlink(inode, le32_to_cpu(ri->i_links));
121 inode->i_size = le64_to_cpu(ri->i_size);
122 inode->i_blocks = le64_to_cpu(ri->i_blocks);
124 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
125 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
126 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
127 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
128 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
129 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
130 inode->i_generation = le32_to_cpu(ri->i_generation);
132 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
133 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
134 fi->i_flags = le32_to_cpu(ri->i_flags);
136 fi->i_advise = ri->i_advise;
137 fi->i_pino = le32_to_cpu(ri->i_pino);
138 fi->i_dir_level = ri->i_dir_level;
140 f2fs_init_extent_cache(inode, &ri->i_ext);
142 get_inline_info(fi, ri);
144 /* check data exist */
145 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
146 __recover_inline_status(inode, node_page);
148 /* get rdev by using inline_info */
149 __get_inode_rdev(inode, ri);
151 if (__written_first_block(ri))
152 set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
154 f2fs_put_page(node_page, 1);
156 stat_inc_inline_inode(inode);
157 stat_inc_inline_dir(inode);
162 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
164 struct f2fs_sb_info *sbi = F2FS_SB(sb);
168 inode = iget_locked(sb, ino);
170 return ERR_PTR(-ENOMEM);
172 if (!(inode->i_state & I_NEW)) {
173 trace_f2fs_iget(inode);
176 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
179 ret = do_read_inode(inode);
183 if (ino == F2FS_NODE_INO(sbi)) {
184 inode->i_mapping->a_ops = &f2fs_node_aops;
185 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
186 } else if (ino == F2FS_META_INO(sbi)) {
187 inode->i_mapping->a_ops = &f2fs_meta_aops;
188 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
189 } else if (S_ISREG(inode->i_mode)) {
190 inode->i_op = &f2fs_file_inode_operations;
191 inode->i_fop = &f2fs_file_operations;
192 inode->i_mapping->a_ops = &f2fs_dblock_aops;
193 } else if (S_ISDIR(inode->i_mode)) {
194 inode->i_op = &f2fs_dir_inode_operations;
195 inode->i_fop = &f2fs_dir_operations;
196 inode->i_mapping->a_ops = &f2fs_dblock_aops;
197 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
198 } else if (S_ISLNK(inode->i_mode)) {
199 inode->i_op = &f2fs_symlink_inode_operations;
200 inode->i_mapping->a_ops = &f2fs_dblock_aops;
201 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
202 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
203 inode->i_op = &f2fs_special_inode_operations;
204 init_special_inode(inode, inode->i_mode, inode->i_rdev);
209 unlock_new_inode(inode);
210 trace_f2fs_iget(inode);
215 trace_f2fs_iget_exit(inode, ret);
219 void update_inode(struct inode *inode, struct page *node_page)
221 struct f2fs_inode *ri;
223 f2fs_wait_on_page_writeback(node_page, NODE);
225 ri = F2FS_INODE(node_page);
227 ri->i_mode = cpu_to_le16(inode->i_mode);
228 ri->i_advise = F2FS_I(inode)->i_advise;
229 ri->i_uid = cpu_to_le32(i_uid_read(inode));
230 ri->i_gid = cpu_to_le32(i_gid_read(inode));
231 ri->i_links = cpu_to_le32(inode->i_nlink);
232 ri->i_size = cpu_to_le64(i_size_read(inode));
233 ri->i_blocks = cpu_to_le64(inode->i_blocks);
235 read_lock(&F2FS_I(inode)->ext_lock);
236 set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
237 read_unlock(&F2FS_I(inode)->ext_lock);
239 set_raw_inline(F2FS_I(inode), ri);
241 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
242 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
243 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
244 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
245 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
246 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
247 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
248 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
249 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
250 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
251 ri->i_generation = cpu_to_le32(inode->i_generation);
252 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
254 __set_inode_rdev(inode, ri);
255 set_cold_node(inode, node_page);
256 set_page_dirty(node_page);
258 clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
261 void update_inode_page(struct inode *inode)
263 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
264 struct page *node_page;
266 node_page = get_node_page(sbi, inode->i_ino);
267 if (IS_ERR(node_page)) {
268 int err = PTR_ERR(node_page);
269 if (err == -ENOMEM) {
272 } else if (err != -ENOENT) {
273 f2fs_stop_checkpoint(sbi);
277 update_inode(inode, node_page);
278 f2fs_put_page(node_page, 1);
281 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
283 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
285 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
286 inode->i_ino == F2FS_META_INO(sbi))
289 if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
293 * We need to lock here to prevent from producing dirty node pages
294 * during the urgent cleaning time when runing out of free sections.
297 update_inode_page(inode);
301 f2fs_balance_fs(sbi);
307 * Called at the last iput() if i_nlink is zero
309 void f2fs_evict_inode(struct inode *inode)
311 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
312 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
314 /* some remained atomic pages should discarded */
315 if (f2fs_is_atomic_file(inode))
316 commit_inmem_pages(inode, true);
318 trace_f2fs_evict_inode(inode);
319 truncate_inode_pages_final(&inode->i_data);
321 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
322 inode->i_ino == F2FS_META_INO(sbi))
325 f2fs_bug_on(sbi, get_dirty_pages(inode));
326 remove_dirty_dir_inode(inode);
328 if (inode->i_nlink || is_bad_inode(inode))
331 sb_start_intwrite(inode->i_sb);
332 set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
333 i_size_write(inode, 0);
335 if (F2FS_HAS_BLOCKS(inode))
336 f2fs_truncate(inode);
339 remove_inode_page(inode);
342 sb_end_intwrite(inode->i_sb);
344 stat_dec_inline_dir(inode);
345 stat_dec_inline_inode(inode);
346 f2fs_destroy_extent_tree(inode);
347 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
349 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
350 if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE))
351 add_dirty_inode(sbi, inode->i_ino, APPEND_INO);
352 if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE))
353 add_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
358 /* caller should call f2fs_lock_op() */
359 void handle_failed_inode(struct inode *inode)
361 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
364 make_bad_inode(inode);
365 unlock_new_inode(inode);
367 i_size_write(inode, 0);
368 if (F2FS_HAS_BLOCKS(inode))
369 f2fs_truncate(inode);
371 remove_inode_page(inode);
373 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
374 clear_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY);
375 alloc_nid_failed(sbi, inode->i_ino);
378 /* iput will drop the inode object */