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 void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
56 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
57 if (old_valid_dev(inode->i_rdev)) {
59 cpu_to_le32(old_encode_dev(inode->i_rdev));
64 cpu_to_le32(new_encode_dev(inode->i_rdev));
70 static int __recover_inline_status(struct inode *inode, struct page *ipage)
72 void *inline_data = inline_data_addr(ipage);
73 struct f2fs_inode *ri;
76 zbuf = kzalloc(MAX_INLINE_DATA, GFP_NOFS);
80 if (!memcmp(zbuf, inline_data, MAX_INLINE_DATA)) {
86 f2fs_wait_on_page_writeback(ipage, NODE);
87 set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
89 ri = F2FS_INODE(ipage);
90 set_raw_inline(F2FS_I(inode), ri);
91 set_page_dirty(ipage);
95 static int do_read_inode(struct inode *inode)
97 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
98 struct f2fs_inode_info *fi = F2FS_I(inode);
99 struct page *node_page;
100 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 get_extent_info(&fi->ext, ri->i_ext);
141 get_inline_info(fi, ri);
143 /* check data exist */
144 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
145 err = __recover_inline_status(inode, node_page);
147 /* get rdev by using inline_info */
148 __get_inode_rdev(inode, ri);
150 f2fs_put_page(node_page, 1);
152 stat_inc_inline_inode(inode);
153 stat_inc_inline_dir(inode);
158 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
160 struct f2fs_sb_info *sbi = F2FS_SB(sb);
164 inode = iget_locked(sb, ino);
166 return ERR_PTR(-ENOMEM);
168 if (!(inode->i_state & I_NEW)) {
169 trace_f2fs_iget(inode);
172 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
175 ret = do_read_inode(inode);
179 if (ino == F2FS_NODE_INO(sbi)) {
180 inode->i_mapping->a_ops = &f2fs_node_aops;
181 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
182 } else if (ino == F2FS_META_INO(sbi)) {
183 inode->i_mapping->a_ops = &f2fs_meta_aops;
184 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
185 } else if (S_ISREG(inode->i_mode)) {
186 inode->i_op = &f2fs_file_inode_operations;
187 inode->i_fop = &f2fs_file_operations;
188 inode->i_mapping->a_ops = &f2fs_dblock_aops;
189 } else if (S_ISDIR(inode->i_mode)) {
190 inode->i_op = &f2fs_dir_inode_operations;
191 inode->i_fop = &f2fs_dir_operations;
192 inode->i_mapping->a_ops = &f2fs_dblock_aops;
193 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
194 } else if (S_ISLNK(inode->i_mode)) {
195 inode->i_op = &f2fs_symlink_inode_operations;
196 inode->i_mapping->a_ops = &f2fs_dblock_aops;
197 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
198 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
199 inode->i_op = &f2fs_special_inode_operations;
200 init_special_inode(inode, inode->i_mode, inode->i_rdev);
205 unlock_new_inode(inode);
206 trace_f2fs_iget(inode);
211 trace_f2fs_iget_exit(inode, ret);
215 void update_inode(struct inode *inode, struct page *node_page)
217 struct f2fs_inode *ri;
219 f2fs_wait_on_page_writeback(node_page, NODE);
221 ri = F2FS_INODE(node_page);
223 ri->i_mode = cpu_to_le16(inode->i_mode);
224 ri->i_advise = F2FS_I(inode)->i_advise;
225 ri->i_uid = cpu_to_le32(i_uid_read(inode));
226 ri->i_gid = cpu_to_le32(i_gid_read(inode));
227 ri->i_links = cpu_to_le32(inode->i_nlink);
228 ri->i_size = cpu_to_le64(i_size_read(inode));
229 ri->i_blocks = cpu_to_le64(inode->i_blocks);
230 set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
231 set_raw_inline(F2FS_I(inode), ri);
233 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
234 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
235 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
236 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
237 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
238 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
239 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
240 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
241 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
242 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
243 ri->i_generation = cpu_to_le32(inode->i_generation);
244 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
246 __set_inode_rdev(inode, ri);
247 set_cold_node(inode, node_page);
248 set_page_dirty(node_page);
250 clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
253 void update_inode_page(struct inode *inode)
255 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
256 struct page *node_page;
258 node_page = get_node_page(sbi, inode->i_ino);
259 if (IS_ERR(node_page)) {
260 int err = PTR_ERR(node_page);
261 if (err == -ENOMEM) {
264 } else if (err != -ENOENT) {
265 f2fs_stop_checkpoint(sbi);
269 update_inode(inode, node_page);
270 f2fs_put_page(node_page, 1);
273 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
275 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
277 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
278 inode->i_ino == F2FS_META_INO(sbi))
281 if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
285 * We need to lock here to prevent from producing dirty node pages
286 * during the urgent cleaning time when runing out of free sections.
289 update_inode_page(inode);
293 f2fs_balance_fs(sbi);
299 * Called at the last iput() if i_nlink is zero
301 void f2fs_evict_inode(struct inode *inode)
303 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
304 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
306 /* some remained atomic pages should discarded */
307 if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode))
308 commit_inmem_pages(inode, true);
310 trace_f2fs_evict_inode(inode);
311 truncate_inode_pages_final(&inode->i_data);
313 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
314 inode->i_ino == F2FS_META_INO(sbi))
317 f2fs_bug_on(sbi, get_dirty_pages(inode));
318 remove_dirty_dir_inode(inode);
320 if (inode->i_nlink || is_bad_inode(inode))
323 sb_start_intwrite(inode->i_sb);
324 set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
325 i_size_write(inode, 0);
327 if (F2FS_HAS_BLOCKS(inode))
328 f2fs_truncate(inode);
331 remove_inode_page(inode);
334 sb_end_intwrite(inode->i_sb);
336 stat_dec_inline_dir(inode);
337 stat_dec_inline_inode(inode);
338 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
340 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
341 if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE))
342 add_dirty_inode(sbi, inode->i_ino, APPEND_INO);
343 if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE))
344 add_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
349 /* caller should call f2fs_lock_op() */
350 void handle_failed_inode(struct inode *inode)
352 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
355 make_bad_inode(inode);
356 unlock_new_inode(inode);
358 i_size_write(inode, 0);
359 if (F2FS_HAS_BLOCKS(inode))
360 f2fs_truncate(inode);
362 remove_inode_page(inode);
364 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
365 clear_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY);
366 alloc_nid_failed(sbi, inode->i_ino);
369 /* iput will drop the inode object */