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Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kim127e6702012-11-02 17:08:18 +09002 * fs/f2fs/checkpoint.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
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.
10 */
11#include <linux/fs.h>
12#include <linux/bio.h>
13#include <linux/mpage.h>
14#include <linux/writeback.h>
15#include <linux/blkdev.h>
16#include <linux/f2fs_fs.h>
17#include <linux/pagevec.h>
18#include <linux/swap.h>
19
20#include "f2fs.h"
21#include "node.h"
22#include "segment.h"
Jaegeuk Kim9e4ded32014-12-17 19:58:58 -080023#include "trace.h"
Namjae Jeon2af4bd62013-04-23 18:26:54 +090024#include <trace/events/f2fs.h>
Jaegeuk Kim127e6702012-11-02 17:08:18 +090025
Jaegeuk Kim6451e042014-07-25 15:47:17 -070026static struct kmem_cache *ino_entry_slab;
Chao Yu06292072014-12-29 15:56:18 +080027struct kmem_cache *inode_entry_slab;
Jaegeuk Kim127e6702012-11-02 17:08:18 +090028
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +090029/*
Jaegeuk Kim127e6702012-11-02 17:08:18 +090030 * We guarantee no failure on the returned page.
31 */
32struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
33{
Gu Zheng9df27d92014-01-20 18:37:04 +080034 struct address_space *mapping = META_MAPPING(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +090035 struct page *page = NULL;
36repeat:
Jaegeuk Kimbde44682014-04-30 09:18:53 +090037 page = grab_cache_page(mapping, index);
Jaegeuk Kim127e6702012-11-02 17:08:18 +090038 if (!page) {
39 cond_resched();
40 goto repeat;
41 }
Jaegeuk Kimbde44682014-04-30 09:18:53 +090042 f2fs_wait_on_page_writeback(page, META);
Jaegeuk Kim127e6702012-11-02 17:08:18 +090043 SetPageUptodate(page);
44 return page;
45}
46
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +090047/*
Jaegeuk Kim127e6702012-11-02 17:08:18 +090048 * We guarantee no failure on the returned page.
49 */
50struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
51{
Gu Zheng9df27d92014-01-20 18:37:04 +080052 struct address_space *mapping = META_MAPPING(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +090053 struct page *page;
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -080054 struct f2fs_io_info fio = {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -070055 .sbi = sbi,
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -080056 .type = META,
57 .rw = READ_SYNC | REQ_META | REQ_PRIO,
58 .blk_addr = index,
Jaegeuk Kim4375a332015-04-23 12:04:33 -070059 .encrypted_page = NULL,
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -080060 };
Jaegeuk Kim127e6702012-11-02 17:08:18 +090061repeat:
62 page = grab_cache_page(mapping, index);
63 if (!page) {
64 cond_resched();
65 goto repeat;
66 }
Jaegeuk Kim393ff912013-03-08 21:29:23 +090067 if (PageUptodate(page))
68 goto out;
Jaegeuk Kim127e6702012-11-02 17:08:18 +090069
Jaegeuk Kim05ca3632015-04-23 14:38:15 -070070 fio.page = page;
71
72 if (f2fs_submit_page_bio(&fio))
Jaegeuk Kim393ff912013-03-08 21:29:23 +090073 goto repeat;
74
75 lock_page(page);
Jaegeuk Kim6bacf522013-12-06 15:00:58 +090076 if (unlikely(page->mapping != mapping)) {
Jaegeuk Kimafcb7ca02013-04-26 11:55:17 +090077 f2fs_put_page(page, 1);
78 goto repeat;
79 }
Jaegeuk Kim393ff912013-03-08 21:29:23 +090080out:
Jaegeuk Kim127e6702012-11-02 17:08:18 +090081 return page;
82}
83
Chao Yuf0c9cad2015-04-18 18:05:36 +080084bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type)
Chao Yu662befd2014-02-07 16:11:53 +080085{
86 switch (type) {
87 case META_NAT:
Chao Yu66b00c12014-12-08 14:59:17 +080088 break;
Chao Yu662befd2014-02-07 16:11:53 +080089 case META_SIT:
Chao Yu66b00c12014-12-08 14:59:17 +080090 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
91 return false;
92 break;
Chao Yu81c1a0f12014-02-27 19:12:24 +080093 case META_SSA:
Chao Yu66b00c12014-12-08 14:59:17 +080094 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
95 blkaddr < SM_I(sbi)->ssa_blkaddr))
96 return false;
97 break;
Chao Yu662befd2014-02-07 16:11:53 +080098 case META_CP:
Chao Yu66b00c12014-12-08 14:59:17 +080099 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
100 blkaddr < __start_cp_addr(sbi)))
101 return false;
102 break;
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700103 case META_POR:
Chao Yu66b00c12014-12-08 14:59:17 +0800104 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
105 blkaddr < MAIN_BLKADDR(sbi)))
106 return false;
107 break;
Chao Yu662befd2014-02-07 16:11:53 +0800108 default:
109 BUG();
110 }
Chao Yu66b00c12014-12-08 14:59:17 +0800111
112 return true;
Chao Yu662befd2014-02-07 16:11:53 +0800113}
114
115/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800116 * Readahead CP/NAT/SIT/SSA pages
Chao Yu662befd2014-02-07 16:11:53 +0800117 */
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700118int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type)
Chao Yu662befd2014-02-07 16:11:53 +0800119{
120 block_t prev_blk_addr = 0;
121 struct page *page;
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700122 block_t blkno = start;
Chao Yu662befd2014-02-07 16:11:53 +0800123 struct f2fs_io_info fio = {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700124 .sbi = sbi,
Chao Yu662befd2014-02-07 16:11:53 +0800125 .type = META,
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700126 .rw = READ_SYNC | REQ_META | REQ_PRIO,
127 .encrypted_page = NULL,
Chao Yu662befd2014-02-07 16:11:53 +0800128 };
129
130 for (; nrpages-- > 0; blkno++) {
Chao Yu662befd2014-02-07 16:11:53 +0800131
Chao Yu66b00c12014-12-08 14:59:17 +0800132 if (!is_valid_blkaddr(sbi, blkno, type))
133 goto out;
134
Chao Yu662befd2014-02-07 16:11:53 +0800135 switch (type) {
136 case META_NAT:
Chao Yu66b00c12014-12-08 14:59:17 +0800137 if (unlikely(blkno >=
138 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
Chao Yu662befd2014-02-07 16:11:53 +0800139 blkno = 0;
Chao Yu66b00c12014-12-08 14:59:17 +0800140 /* get nat block addr */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800141 fio.blk_addr = current_nat_addr(sbi,
Chao Yu662befd2014-02-07 16:11:53 +0800142 blkno * NAT_ENTRY_PER_BLOCK);
143 break;
144 case META_SIT:
145 /* get sit block addr */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800146 fio.blk_addr = current_sit_addr(sbi,
Chao Yu662befd2014-02-07 16:11:53 +0800147 blkno * SIT_ENTRY_PER_BLOCK);
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800148 if (blkno != start && prev_blk_addr + 1 != fio.blk_addr)
Chao Yu662befd2014-02-07 16:11:53 +0800149 goto out;
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800150 prev_blk_addr = fio.blk_addr;
Chao Yu662befd2014-02-07 16:11:53 +0800151 break;
Chao Yu81c1a0f12014-02-27 19:12:24 +0800152 case META_SSA:
Chao Yu662befd2014-02-07 16:11:53 +0800153 case META_CP:
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700154 case META_POR:
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800155 fio.blk_addr = blkno;
Chao Yu662befd2014-02-07 16:11:53 +0800156 break;
157 default:
158 BUG();
159 }
160
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800161 page = grab_cache_page(META_MAPPING(sbi), fio.blk_addr);
Chao Yu662befd2014-02-07 16:11:53 +0800162 if (!page)
163 continue;
164 if (PageUptodate(page)) {
Chao Yu662befd2014-02-07 16:11:53 +0800165 f2fs_put_page(page, 1);
166 continue;
167 }
168
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700169 fio.page = page;
170 f2fs_submit_page_mbio(&fio);
Chao Yu662befd2014-02-07 16:11:53 +0800171 f2fs_put_page(page, 0);
172 }
173out:
174 f2fs_submit_merged_bio(sbi, META, READ);
175 return blkno - start;
176}
177
Chao Yu635aee12014-12-08 15:02:52 +0800178void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
179{
180 struct page *page;
181 bool readahead = false;
182
183 page = find_get_page(META_MAPPING(sbi), index);
184 if (!page || (page && !PageUptodate(page)))
185 readahead = true;
186 f2fs_put_page(page, 0);
187
188 if (readahead)
189 ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR);
190}
191
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900192static int f2fs_write_meta_page(struct page *page,
193 struct writeback_control *wbc)
194{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700195 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900196
Chao Yuecda0de2014-05-06 16:48:26 +0800197 trace_f2fs_writepage(page, META);
198
Chao Yucaf00472015-01-28 17:48:42 +0800199 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
Chao Yucfb271d2013-12-05 17:15:22 +0800200 goto redirty_out;
Jaegeuk Kim857dc4e2014-11-19 11:03:34 -0800201 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
Chao Yucfb271d2013-12-05 17:15:22 +0800202 goto redirty_out;
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -0700203 if (unlikely(f2fs_cp_error(sbi)))
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700204 goto redirty_out;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900205
Jaegeuk Kim3cb5ad12014-03-18 13:29:07 +0900206 f2fs_wait_on_page_writeback(page, META);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900207 write_meta_page(sbi, page);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900208 dec_page_count(sbi, F2FS_DIRTY_META);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900209 unlock_page(page);
Jaegeuk Kim857dc4e2014-11-19 11:03:34 -0800210
211 if (wbc->for_reclaim)
212 f2fs_submit_merged_bio(sbi, META, WRITE);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900213 return 0;
Chao Yucfb271d2013-12-05 17:15:22 +0800214
215redirty_out:
Jaegeuk Kim76f60262014-04-15 16:04:15 +0900216 redirty_page_for_writepage(wbc, page);
Chao Yucfb271d2013-12-05 17:15:22 +0800217 return AOP_WRITEPAGE_ACTIVATE;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900218}
219
220static int f2fs_write_meta_pages(struct address_space *mapping,
221 struct writeback_control *wbc)
222{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700223 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900224 long diff, written;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900225
Chao Yue5748432014-05-06 16:51:24 +0800226 trace_f2fs_writepages(mapping->host, wbc, META);
227
Jaegeuk Kim5459aa92013-12-17 17:28:41 +0900228 /* collect a number of dirty meta pages and write together */
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900229 if (wbc->for_kupdate ||
230 get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META))
Jaegeuk Kimd3baf952014-03-18 13:43:05 +0900231 goto skip_write;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900232
233 /* if mounting is failed, skip writing node pages */
234 mutex_lock(&sbi->cp_mutex);
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900235 diff = nr_pages_to_write(sbi, META, wbc);
236 written = sync_meta_pages(sbi, META, wbc->nr_to_write);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900237 mutex_unlock(&sbi->cp_mutex);
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900238 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900239 return 0;
Jaegeuk Kimd3baf952014-03-18 13:43:05 +0900240
241skip_write:
242 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
243 return 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900244}
245
246long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
247 long nr_to_write)
248{
Gu Zheng9df27d92014-01-20 18:37:04 +0800249 struct address_space *mapping = META_MAPPING(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900250 pgoff_t index = 0, end = LONG_MAX;
251 struct pagevec pvec;
252 long nwritten = 0;
253 struct writeback_control wbc = {
254 .for_reclaim = 0,
255 };
256
257 pagevec_init(&pvec, 0);
258
259 while (index <= end) {
260 int i, nr_pages;
261 nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
262 PAGECACHE_TAG_DIRTY,
263 min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
Chao Yucfb271d2013-12-05 17:15:22 +0800264 if (unlikely(nr_pages == 0))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900265 break;
266
267 for (i = 0; i < nr_pages; i++) {
268 struct page *page = pvec.pages[i];
Jaegeuk Kim203681f2014-02-05 13:03:57 +0900269
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900270 lock_page(page);
Jaegeuk Kim203681f2014-02-05 13:03:57 +0900271
272 if (unlikely(page->mapping != mapping)) {
273continue_unlock:
274 unlock_page(page);
275 continue;
276 }
277 if (!PageDirty(page)) {
278 /* someone wrote it for us */
279 goto continue_unlock;
280 }
281
282 if (!clear_page_dirty_for_io(page))
283 goto continue_unlock;
284
Chao Yu97dc3fd2015-02-16 16:19:22 +0800285 if (mapping->a_ops->writepage(page, &wbc)) {
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900286 unlock_page(page);
287 break;
288 }
Chao Yucfb271d2013-12-05 17:15:22 +0800289 nwritten++;
290 if (unlikely(nwritten >= nr_to_write))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900291 break;
292 }
293 pagevec_release(&pvec);
294 cond_resched();
295 }
296
297 if (nwritten)
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900298 f2fs_submit_merged_bio(sbi, type, WRITE);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900299
300 return nwritten;
301}
302
303static int f2fs_set_meta_page_dirty(struct page *page)
304{
Jaegeuk Kim26c6b882013-10-24 17:53:29 +0900305 trace_f2fs_set_page_dirty(page, META);
306
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900307 SetPageUptodate(page);
308 if (!PageDirty(page)) {
309 __set_page_dirty_nobuffers(page);
Jaegeuk Kim40813632014-09-02 15:31:18 -0700310 inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META);
Chao Yu16018392015-01-19 20:24:37 +0800311 SetPagePrivate(page);
Jaegeuk Kim9e4ded32014-12-17 19:58:58 -0800312 f2fs_trace_pid(page);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900313 return 1;
314 }
315 return 0;
316}
317
318const struct address_space_operations f2fs_meta_aops = {
319 .writepage = f2fs_write_meta_page,
320 .writepages = f2fs_write_meta_pages,
321 .set_page_dirty = f2fs_set_meta_page_dirty,
Chao Yu487261f2015-02-05 17:44:29 +0800322 .invalidatepage = f2fs_invalidate_page,
323 .releasepage = f2fs_release_page,
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900324};
325
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700326static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700327{
Chao Yu67298802014-11-18 11:18:36 +0800328 struct inode_management *im = &sbi->im[type];
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700329 struct ino_entry *e;
330retry:
Jaegeuk Kim769ec6e2014-12-03 20:47:26 -0800331 if (radix_tree_preload(GFP_NOFS)) {
332 cond_resched();
333 goto retry;
334 }
335
Chao Yu67298802014-11-18 11:18:36 +0800336 spin_lock(&im->ino_lock);
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700337
Chao Yu67298802014-11-18 11:18:36 +0800338 e = radix_tree_lookup(&im->ino_root, ino);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700339 if (!e) {
340 e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC);
341 if (!e) {
Chao Yu67298802014-11-18 11:18:36 +0800342 spin_unlock(&im->ino_lock);
Jaegeuk Kim769ec6e2014-12-03 20:47:26 -0800343 radix_tree_preload_end();
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700344 goto retry;
345 }
Chao Yu67298802014-11-18 11:18:36 +0800346 if (radix_tree_insert(&im->ino_root, ino, e)) {
347 spin_unlock(&im->ino_lock);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700348 kmem_cache_free(ino_entry_slab, e);
Jaegeuk Kim769ec6e2014-12-03 20:47:26 -0800349 radix_tree_preload_end();
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700350 goto retry;
351 }
352 memset(e, 0, sizeof(struct ino_entry));
353 e->ino = ino;
354
Chao Yu67298802014-11-18 11:18:36 +0800355 list_add_tail(&e->list, &im->ino_list);
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800356 if (type != ORPHAN_INO)
Chao Yu67298802014-11-18 11:18:36 +0800357 im->ino_num++;
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700358 }
Chao Yu67298802014-11-18 11:18:36 +0800359 spin_unlock(&im->ino_lock);
Jaegeuk Kim769ec6e2014-12-03 20:47:26 -0800360 radix_tree_preload_end();
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700361}
362
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700363static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700364{
Chao Yu67298802014-11-18 11:18:36 +0800365 struct inode_management *im = &sbi->im[type];
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700366 struct ino_entry *e;
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700367
Chao Yu67298802014-11-18 11:18:36 +0800368 spin_lock(&im->ino_lock);
369 e = radix_tree_lookup(&im->ino_root, ino);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700370 if (e) {
371 list_del(&e->list);
Chao Yu67298802014-11-18 11:18:36 +0800372 radix_tree_delete(&im->ino_root, ino);
373 im->ino_num--;
374 spin_unlock(&im->ino_lock);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700375 kmem_cache_free(ino_entry_slab, e);
376 return;
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700377 }
Chao Yu67298802014-11-18 11:18:36 +0800378 spin_unlock(&im->ino_lock);
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700379}
380
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700381void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type)
382{
383 /* add new dirty ino entry into list */
384 __add_ino_entry(sbi, ino, type);
385}
386
387void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type)
388{
389 /* remove dirty ino entry from list */
390 __remove_ino_entry(sbi, ino, type);
391}
392
393/* mode should be APPEND_INO or UPDATE_INO */
394bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
395{
Chao Yu67298802014-11-18 11:18:36 +0800396 struct inode_management *im = &sbi->im[mode];
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700397 struct ino_entry *e;
Chao Yu67298802014-11-18 11:18:36 +0800398
399 spin_lock(&im->ino_lock);
400 e = radix_tree_lookup(&im->ino_root, ino);
401 spin_unlock(&im->ino_lock);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700402 return e ? true : false;
403}
404
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -0700405void release_dirty_inode(struct f2fs_sb_info *sbi)
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700406{
407 struct ino_entry *e, *tmp;
408 int i;
409
410 for (i = APPEND_INO; i <= UPDATE_INO; i++) {
Chao Yu67298802014-11-18 11:18:36 +0800411 struct inode_management *im = &sbi->im[i];
412
413 spin_lock(&im->ino_lock);
414 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700415 list_del(&e->list);
Chao Yu67298802014-11-18 11:18:36 +0800416 radix_tree_delete(&im->ino_root, e->ino);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700417 kmem_cache_free(ino_entry_slab, e);
Chao Yu67298802014-11-18 11:18:36 +0800418 im->ino_num--;
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700419 }
Chao Yu67298802014-11-18 11:18:36 +0800420 spin_unlock(&im->ino_lock);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700421 }
422}
423
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900424int acquire_orphan_inode(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900425{
Chao Yu67298802014-11-18 11:18:36 +0800426 struct inode_management *im = &sbi->im[ORPHAN_INO];
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900427 int err = 0;
428
Chao Yu67298802014-11-18 11:18:36 +0800429 spin_lock(&im->ino_lock);
430 if (unlikely(im->ino_num >= sbi->max_orphans))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900431 err = -ENOSPC;
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900432 else
Chao Yu67298802014-11-18 11:18:36 +0800433 im->ino_num++;
434 spin_unlock(&im->ino_lock);
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800435
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900436 return err;
437}
438
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900439void release_orphan_inode(struct f2fs_sb_info *sbi)
440{
Chao Yu67298802014-11-18 11:18:36 +0800441 struct inode_management *im = &sbi->im[ORPHAN_INO];
442
443 spin_lock(&im->ino_lock);
444 f2fs_bug_on(sbi, im->ino_num == 0);
445 im->ino_num--;
446 spin_unlock(&im->ino_lock);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900447}
448
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900449void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
450{
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700451 /* add new orphan ino entry into list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700452 __add_ino_entry(sbi, ino, ORPHAN_INO);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900453}
454
455void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
456{
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700457 /* remove orphan entry from orphan list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700458 __remove_ino_entry(sbi, ino, ORPHAN_INO);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900459}
460
461static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
462{
463 struct inode *inode = f2fs_iget(sbi->sb, ino);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700464 f2fs_bug_on(sbi, IS_ERR(inode));
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900465 clear_nlink(inode);
466
467 /* truncate all the data during iput */
468 iput(inode);
469}
470
Chao Yu8f99a942013-11-28 15:43:43 +0800471void recover_orphan_inodes(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900472{
Wanpeng Li3c642982015-02-26 07:57:21 +0800473 block_t start_blk, orphan_blocks, i, j;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900474
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900475 if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG))
Chao Yu8f99a942013-11-28 15:43:43 +0800476 return;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900477
Chao Yucaf00472015-01-28 17:48:42 +0800478 set_sbi_flag(sbi, SBI_POR_DOING);
Changman Lee1dbe4152014-05-12 12:27:43 +0900479
Wanpeng Li55141482015-02-26 07:57:20 +0800480 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
Wanpeng Li3c642982015-02-26 07:57:21 +0800481 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900482
Wanpeng Li3c642982015-02-26 07:57:21 +0800483 ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP);
Chao Yu662befd2014-02-07 16:11:53 +0800484
Wanpeng Li3c642982015-02-26 07:57:21 +0800485 for (i = 0; i < orphan_blocks; i++) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900486 struct page *page = get_meta_page(sbi, start_blk + i);
487 struct f2fs_orphan_block *orphan_blk;
488
489 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
490 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
491 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
492 recover_orphan_inode(sbi, ino);
493 }
494 f2fs_put_page(page, 1);
495 }
496 /* clear Orphan Flag */
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900497 clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG);
Chao Yucaf00472015-01-28 17:48:42 +0800498 clear_sbi_flag(sbi, SBI_POR_DOING);
Chao Yu8f99a942013-11-28 15:43:43 +0800499 return;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900500}
501
502static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
503{
Gu Zheng502c6e02013-11-19 18:03:58 +0800504 struct list_head *head;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900505 struct f2fs_orphan_block *orphan_blk = NULL;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900506 unsigned int nentries = 0;
Gu Zheng45319292014-01-10 18:09:02 +0800507 unsigned short index;
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800508 unsigned short orphan_blocks;
Gu Zheng45319292014-01-10 18:09:02 +0800509 struct page *page = NULL;
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700510 struct ino_entry *orphan = NULL;
Chao Yu67298802014-11-18 11:18:36 +0800511 struct inode_management *im = &sbi->im[ORPHAN_INO];
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900512
Chao Yu67298802014-11-18 11:18:36 +0800513 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800514
Gu Zheng45319292014-01-10 18:09:02 +0800515 for (index = 0; index < orphan_blocks; index++)
Gu Zheng63f53842014-01-20 18:37:30 +0800516 grab_meta_page(sbi, start_blk + index);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900517
Gu Zheng45319292014-01-10 18:09:02 +0800518 index = 1;
Jaegeuk Kimd6c67a42015-05-01 11:08:59 -0700519
520 /*
521 * we don't need to do spin_lock(&im->ino_lock) here, since all the
522 * orphan inode operations are covered under f2fs_lock_op().
523 * And, spin_lock should be avoided due to page operations below.
524 */
Chao Yu67298802014-11-18 11:18:36 +0800525 head = &im->ino_list;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900526
527 /* loop for each orphan inode entry and write them in Jornal block */
Gu Zheng502c6e02013-11-19 18:03:58 +0800528 list_for_each_entry(orphan, head, list) {
529 if (!page) {
Gu Zheng63f53842014-01-20 18:37:30 +0800530 page = find_get_page(META_MAPPING(sbi), start_blk++);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700531 f2fs_bug_on(sbi, !page);
Gu Zheng502c6e02013-11-19 18:03:58 +0800532 orphan_blk =
533 (struct f2fs_orphan_block *)page_address(page);
534 memset(orphan_blk, 0, sizeof(*orphan_blk));
Gu Zheng63f53842014-01-20 18:37:30 +0800535 f2fs_put_page(page, 0);
Gu Zheng502c6e02013-11-19 18:03:58 +0800536 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900537
Gu Zheng36795562013-11-26 16:44:16 +0800538 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900539
Gu Zheng36795562013-11-26 16:44:16 +0800540 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900541 /*
542 * an orphan block is full of 1020 entries,
543 * then we need to flush current orphan blocks
544 * and bring another one in memory
545 */
546 orphan_blk->blk_addr = cpu_to_le16(index);
547 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
548 orphan_blk->entry_count = cpu_to_le32(nentries);
549 set_page_dirty(page);
550 f2fs_put_page(page, 1);
551 index++;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900552 nentries = 0;
553 page = NULL;
554 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900555 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900556
Gu Zheng502c6e02013-11-19 18:03:58 +0800557 if (page) {
558 orphan_blk->blk_addr = cpu_to_le16(index);
559 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
560 orphan_blk->entry_count = cpu_to_le32(nentries);
561 set_page_dirty(page);
562 f2fs_put_page(page, 1);
563 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900564}
565
566static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
567 block_t cp_addr, unsigned long long *version)
568{
569 struct page *cp_page_1, *cp_page_2 = NULL;
570 unsigned long blk_size = sbi->blocksize;
571 struct f2fs_checkpoint *cp_block;
572 unsigned long long cur_version = 0, pre_version = 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900573 size_t crc_offset;
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900574 __u32 crc = 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900575
576 /* Read the 1st cp block in this CP pack */
577 cp_page_1 = get_meta_page(sbi, cp_addr);
578
579 /* get the version number */
580 cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1);
581 crc_offset = le32_to_cpu(cp_block->checksum_offset);
582 if (crc_offset >= blk_size)
583 goto invalid_cp1;
584
Jaegeuk Kim29e70432015-02-10 16:23:12 -0800585 crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset)));
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900586 if (!f2fs_crc_valid(crc, cp_block, crc_offset))
587 goto invalid_cp1;
588
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900589 pre_version = cur_cp_version(cp_block);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900590
591 /* Read the 2nd cp block in this CP pack */
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900592 cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900593 cp_page_2 = get_meta_page(sbi, cp_addr);
594
595 cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2);
596 crc_offset = le32_to_cpu(cp_block->checksum_offset);
597 if (crc_offset >= blk_size)
598 goto invalid_cp2;
599
Jaegeuk Kim29e70432015-02-10 16:23:12 -0800600 crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset)));
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900601 if (!f2fs_crc_valid(crc, cp_block, crc_offset))
602 goto invalid_cp2;
603
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900604 cur_version = cur_cp_version(cp_block);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900605
606 if (cur_version == pre_version) {
607 *version = cur_version;
608 f2fs_put_page(cp_page_2, 1);
609 return cp_page_1;
610 }
611invalid_cp2:
612 f2fs_put_page(cp_page_2, 1);
613invalid_cp1:
614 f2fs_put_page(cp_page_1, 1);
615 return NULL;
616}
617
618int get_valid_checkpoint(struct f2fs_sb_info *sbi)
619{
620 struct f2fs_checkpoint *cp_block;
621 struct f2fs_super_block *fsb = sbi->raw_super;
622 struct page *cp1, *cp2, *cur_page;
623 unsigned long blk_size = sbi->blocksize;
624 unsigned long long cp1_version = 0, cp2_version = 0;
625 unsigned long long cp_start_blk_no;
Wanpeng Li55141482015-02-26 07:57:20 +0800626 unsigned int cp_blks = 1 + __cp_payload(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +0900627 block_t cp_blk_no;
628 int i;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900629
Changman Lee1dbe4152014-05-12 12:27:43 +0900630 sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900631 if (!sbi->ckpt)
632 return -ENOMEM;
633 /*
634 * Finding out valid cp block involves read both
635 * sets( cp pack1 and cp pack 2)
636 */
637 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
638 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
639
640 /* The second checkpoint pack should start at the next segment */
Jaegeuk Kimf9a4e6d2013-11-28 12:44:05 +0900641 cp_start_blk_no += ((unsigned long long)1) <<
642 le32_to_cpu(fsb->log_blocks_per_seg);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900643 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
644
645 if (cp1 && cp2) {
646 if (ver_after(cp2_version, cp1_version))
647 cur_page = cp2;
648 else
649 cur_page = cp1;
650 } else if (cp1) {
651 cur_page = cp1;
652 } else if (cp2) {
653 cur_page = cp2;
654 } else {
655 goto fail_no_cp;
656 }
657
658 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
659 memcpy(sbi->ckpt, cp_block, blk_size);
660
Changman Lee1dbe4152014-05-12 12:27:43 +0900661 if (cp_blks <= 1)
662 goto done;
663
664 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
665 if (cur_page == cp2)
666 cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg);
667
668 for (i = 1; i < cp_blks; i++) {
669 void *sit_bitmap_ptr;
670 unsigned char *ckpt = (unsigned char *)sbi->ckpt;
671
672 cur_page = get_meta_page(sbi, cp_blk_no + i);
673 sit_bitmap_ptr = page_address(cur_page);
674 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
675 f2fs_put_page(cur_page, 1);
676 }
677done:
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900678 f2fs_put_page(cp1, 1);
679 f2fs_put_page(cp2, 1);
680 return 0;
681
682fail_no_cp:
683 kfree(sbi->ckpt);
684 return -EINVAL;
685}
686
Chao Yu06292072014-12-29 15:56:18 +0800687static int __add_dirty_inode(struct inode *inode, struct inode_entry *new)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900688{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700689 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900690
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900691 if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR))
692 return -EEXIST;
Chao Yu2d7b8222014-03-29 11:33:17 +0800693
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900694 set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR);
695 F2FS_I(inode)->dirty_dir = new;
696 list_add_tail(&new->list, &sbi->dir_inode_list);
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +0900697 stat_inc_dirty_dir(sbi);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900698 return 0;
699}
700
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700701void update_dirty_page(struct inode *inode, struct page *page)
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900702{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700703 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu06292072014-12-29 15:56:18 +0800704 struct inode_entry *new;
Chao Yucf0ee0f2014-04-02 08:55:00 +0800705 int ret = 0;
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900706
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700707 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900708 return;
Gu Zheng7bd59382013-10-22 14:52:26 +0800709
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700710 if (!S_ISDIR(inode->i_mode)) {
711 inode_inc_dirty_pages(inode);
712 goto out;
713 }
714
Gu Zheng7bd59382013-10-22 14:52:26 +0800715 new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900716 new->inode = inode;
717 INIT_LIST_HEAD(&new->list);
718
719 spin_lock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800720 ret = __add_dirty_inode(inode, new);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700721 inode_inc_dirty_pages(inode);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900722 spin_unlock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800723
724 if (ret)
725 kmem_cache_free(inode_entry_slab, new);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700726out:
727 SetPagePrivate(page);
Jaegeuk Kim9e4ded32014-12-17 19:58:58 -0800728 f2fs_trace_pid(page);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900729}
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900730
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900731void add_dirty_dir_inode(struct inode *inode)
732{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700733 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu06292072014-12-29 15:56:18 +0800734 struct inode_entry *new =
Gu Zheng7bd59382013-10-22 14:52:26 +0800735 f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800736 int ret = 0;
Gu Zheng7bd59382013-10-22 14:52:26 +0800737
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900738 new->inode = inode;
739 INIT_LIST_HEAD(&new->list);
740
741 spin_lock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800742 ret = __add_dirty_inode(inode, new);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900743 spin_unlock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800744
745 if (ret)
746 kmem_cache_free(inode_entry_slab, new);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900747}
748
749void remove_dirty_dir_inode(struct inode *inode)
750{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700751 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu06292072014-12-29 15:56:18 +0800752 struct inode_entry *entry;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900753
754 if (!S_ISDIR(inode->i_mode))
755 return;
756
757 spin_lock(&sbi->dir_inode_lock);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700758 if (get_dirty_pages(inode) ||
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900759 !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) {
Jaegeuk Kim3b10b1f2013-05-27 10:32:01 +0900760 spin_unlock(&sbi->dir_inode_lock);
761 return;
762 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900763
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900764 entry = F2FS_I(inode)->dirty_dir;
765 list_del(&entry->list);
766 F2FS_I(inode)->dirty_dir = NULL;
767 clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR);
768 stat_dec_dirty_dir(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900769 spin_unlock(&sbi->dir_inode_lock);
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900770 kmem_cache_free(inode_entry_slab, entry);
Jaegeuk Kim74d0b912013-05-15 16:40:02 +0900771
772 /* Only from the recovery routine */
Jaegeuk Kimafc3eda2013-05-28 09:59:27 +0900773 if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) {
774 clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT);
Jaegeuk Kim74d0b912013-05-15 16:40:02 +0900775 iput(inode);
Jaegeuk Kimafc3eda2013-05-28 09:59:27 +0900776 }
Jaegeuk Kim74d0b912013-05-15 16:40:02 +0900777}
778
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900779void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi)
780{
Gu Zhengce3b7d82013-11-19 18:03:47 +0800781 struct list_head *head;
Chao Yu06292072014-12-29 15:56:18 +0800782 struct inode_entry *entry;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900783 struct inode *inode;
784retry:
Jaegeuk Kimaf41d3e2014-10-17 14:14:16 -0700785 if (unlikely(f2fs_cp_error(sbi)))
786 return;
787
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900788 spin_lock(&sbi->dir_inode_lock);
Gu Zhengce3b7d82013-11-19 18:03:47 +0800789
790 head = &sbi->dir_inode_list;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900791 if (list_empty(head)) {
792 spin_unlock(&sbi->dir_inode_lock);
793 return;
794 }
Chao Yu06292072014-12-29 15:56:18 +0800795 entry = list_entry(head->next, struct inode_entry, list);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900796 inode = igrab(entry->inode);
797 spin_unlock(&sbi->dir_inode_lock);
798 if (inode) {
Jaegeuk Kim87d6f892014-03-18 12:40:49 +0900799 filemap_fdatawrite(inode->i_mapping);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900800 iput(inode);
801 } else {
802 /*
803 * We should submit bio, since it exists several
804 * wribacking dentry pages in the freeing inode.
805 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900806 f2fs_submit_merged_bio(sbi, DATA, WRITE);
Sebastian Andrzej Siewior7ecebe52015-02-27 13:13:14 +0100807 cond_resched();
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900808 }
809 goto retry;
810}
811
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900812/*
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900813 * Freeze all the FS-operations for checkpoint.
814 */
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700815static int block_operations(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900816{
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900817 struct writeback_control wbc = {
818 .sync_mode = WB_SYNC_ALL,
819 .nr_to_write = LONG_MAX,
820 .for_reclaim = 0,
821 };
Jaegeuk Kimc718379b2013-04-24 13:19:56 +0900822 struct blk_plug plug;
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700823 int err = 0;
Jaegeuk Kimc718379b2013-04-24 13:19:56 +0900824
825 blk_start_plug(&plug);
826
Jaegeuk Kim39936832012-11-22 16:21:29 +0900827retry_flush_dents:
Gu Zhenge4795562013-09-27 18:08:30 +0800828 f2fs_lock_all(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900829 /* write all the dirty dentry pages */
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900830 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
Gu Zhenge4795562013-09-27 18:08:30 +0800831 f2fs_unlock_all(sbi);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900832 sync_dirty_dir_inodes(sbi);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700833 if (unlikely(f2fs_cp_error(sbi))) {
834 err = -EIO;
835 goto out;
836 }
Jaegeuk Kim39936832012-11-22 16:21:29 +0900837 goto retry_flush_dents;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900838 }
839
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900840 /*
arter97e1c42042014-08-06 23:22:50 +0900841 * POR: we should ensure that there are no dirty node pages
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900842 * until finishing nat/sit flush.
843 */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900844retry_flush_nodes:
Chao Yub3582c62014-07-03 18:58:39 +0800845 down_write(&sbi->node_write);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900846
847 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
Chao Yub3582c62014-07-03 18:58:39 +0800848 up_write(&sbi->node_write);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900849 sync_node_pages(sbi, 0, &wbc);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700850 if (unlikely(f2fs_cp_error(sbi))) {
851 f2fs_unlock_all(sbi);
852 err = -EIO;
853 goto out;
854 }
Jaegeuk Kim39936832012-11-22 16:21:29 +0900855 goto retry_flush_nodes;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900856 }
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700857out:
Jaegeuk Kimc718379b2013-04-24 13:19:56 +0900858 blk_finish_plug(&plug);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700859 return err;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900860}
861
862static void unblock_operations(struct f2fs_sb_info *sbi)
863{
Chao Yub3582c62014-07-03 18:58:39 +0800864 up_write(&sbi->node_write);
Gu Zhenge4795562013-09-27 18:08:30 +0800865 f2fs_unlock_all(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900866}
867
Changman Leefb51b5e2013-11-07 12:48:25 +0900868static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi)
869{
870 DEFINE_WAIT(wait);
871
872 for (;;) {
873 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
874
875 if (!get_pages(sbi, F2FS_WRITEBACK))
876 break;
877
878 io_schedule();
879 }
880 finish_wait(&sbi->cp_wait, &wait);
881}
882
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700883static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900884{
885 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -0700886 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
Huang Ying77041822014-09-12 20:19:48 +0800887 struct f2fs_nm_info *nm_i = NM_I(sbi);
Chao Yu67298802014-11-18 11:18:36 +0800888 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
Huang Ying77041822014-09-12 20:19:48 +0800889 nid_t last_nid = nm_i->next_scan_nid;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900890 block_t start_blk;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900891 unsigned int data_sum_blocks, orphan_blocks;
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900892 __u32 crc32 = 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900893 int i;
Wanpeng Li55141482015-02-26 07:57:20 +0800894 int cp_payload_blks = __cp_payload(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900895
Jaegeuk Kim1e87a782014-04-15 13:57:55 +0900896 /*
897 * This avoids to conduct wrong roll-forward operations and uses
898 * metapages, so should be called prior to sync_meta_pages below.
899 */
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -0700900 discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg));
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900901
902 /* Flush all the NAT/SIT pages */
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700903 while (get_pages(sbi, F2FS_DIRTY_META)) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900904 sync_meta_pages(sbi, META, LONG_MAX);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700905 if (unlikely(f2fs_cp_error(sbi)))
906 return;
907 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900908
909 next_free_nid(sbi, &last_nid);
910
911 /*
912 * modify checkpoint
913 * version number is already updated
914 */
915 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi));
916 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
917 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
Chao Yub5b82202014-08-22 16:17:38 +0800918 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900919 ckpt->cur_node_segno[i] =
920 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE));
921 ckpt->cur_node_blkoff[i] =
922 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE));
923 ckpt->alloc_type[i + CURSEG_HOT_NODE] =
924 curseg_alloc_type(sbi, i + CURSEG_HOT_NODE);
925 }
Chao Yub5b82202014-08-22 16:17:38 +0800926 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900927 ckpt->cur_data_segno[i] =
928 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA));
929 ckpt->cur_data_blkoff[i] =
930 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA));
931 ckpt->alloc_type[i + CURSEG_HOT_DATA] =
932 curseg_alloc_type(sbi, i + CURSEG_HOT_DATA);
933 }
934
935 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
936 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
937 ckpt->next_free_nid = cpu_to_le32(last_nid);
938
939 /* 2 cp + n data seg summary + orphan inode blocks */
Chao Yu3fa06d72014-12-09 14:21:46 +0800940 data_sum_blocks = npages_for_summary_flush(sbi, false);
Chao Yub5b82202014-08-22 16:17:38 +0800941 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900942 set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900943 else
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900944 clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900945
Chao Yu67298802014-11-18 11:18:36 +0800946 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
Changman Lee1dbe4152014-05-12 12:27:43 +0900947 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
948 orphan_blocks);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900949
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800950 if (__remain_node_summaries(cpc->reason))
Chao Yub5b82202014-08-22 16:17:38 +0800951 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+
Changman Lee1dbe4152014-05-12 12:27:43 +0900952 cp_payload_blks + data_sum_blocks +
953 orphan_blocks + NR_CURSEG_NODE_TYPE);
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800954 else
Chao Yub5b82202014-08-22 16:17:38 +0800955 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
Changman Lee1dbe4152014-05-12 12:27:43 +0900956 cp_payload_blks + data_sum_blocks +
957 orphan_blocks);
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800958
959 if (cpc->reason == CP_UMOUNT)
960 set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
961 else
962 clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
963
964 if (cpc->reason == CP_FASTBOOT)
965 set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
966 else
967 clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900968
Chao Yu67298802014-11-18 11:18:36 +0800969 if (orphan_num)
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900970 set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900971 else
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900972 clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900973
Chao Yucaf00472015-01-28 17:48:42 +0800974 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
Jaegeuk Kim2ae4c672014-09-02 15:43:52 -0700975 set_ckpt_flags(ckpt, CP_FSCK_FLAG);
976
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900977 /* update SIT/NAT bitmap */
978 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
979 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
980
981 crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset));
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900982 *((__le32 *)((unsigned char *)ckpt +
983 le32_to_cpu(ckpt->checksum_offset)))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900984 = cpu_to_le32(crc32);
985
986 start_blk = __start_cp_addr(sbi);
987
988 /* write out checkpoint buffer at block 0 */
Chao Yu381722d2015-05-19 17:40:04 +0800989 update_meta_page(sbi, ckpt, start_blk++);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900990
Chao Yu381722d2015-05-19 17:40:04 +0800991 for (i = 1; i < 1 + cp_payload_blks; i++)
992 update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
993 start_blk++);
Changman Lee1dbe4152014-05-12 12:27:43 +0900994
Chao Yu67298802014-11-18 11:18:36 +0800995 if (orphan_num) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900996 write_orphan_inodes(sbi, start_blk);
997 start_blk += orphan_blocks;
998 }
999
1000 write_data_summaries(sbi, start_blk);
1001 start_blk += data_sum_blocks;
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001002 if (__remain_node_summaries(cpc->reason)) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001003 write_node_summaries(sbi, start_blk);
1004 start_blk += NR_CURSEG_NODE_TYPE;
1005 }
1006
1007 /* writeout checkpoint block */
Chao Yu381722d2015-05-19 17:40:04 +08001008 update_meta_page(sbi, ckpt, start_blk);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001009
1010 /* wait for previous submitted node/meta pages writeback */
Changman Leefb51b5e2013-11-07 12:48:25 +09001011 wait_on_all_pages_writeback(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001012
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001013 if (unlikely(f2fs_cp_error(sbi)))
1014 return;
1015
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +09001016 filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX);
Gu Zheng9df27d92014-01-20 18:37:04 +08001017 filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001018
1019 /* update user_block_counts */
1020 sbi->last_valid_block_count = sbi->total_valid_block_count;
1021 sbi->alloc_valid_block_count = 0;
1022
1023 /* Here, we only have one bio having CP pack */
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001024 sync_meta_pages(sbi, META_FLUSH, LONG_MAX);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001025
Jaegeuk Kim6a8f8ca2014-10-29 14:37:22 -07001026 /* wait for previous submitted meta pages writeback */
1027 wait_on_all_pages_writeback(sbi);
1028
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001029 release_dirty_inode(sbi);
1030
1031 if (unlikely(f2fs_cp_error(sbi)))
1032 return;
1033
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001034 clear_prefree_segments(sbi, cpc);
Chao Yucaf00472015-01-28 17:48:42 +08001035 clear_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001036}
1037
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001038/*
arter97e1c42042014-08-06 23:22:50 +09001039 * We guarantee that this checkpoint procedure will not fail.
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001040 */
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001041void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001042{
1043 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1044 unsigned long long ckpt_ver;
1045
Jaegeuk Kim43727522013-02-04 15:11:17 +09001046 mutex_lock(&sbi->cp_mutex);
Jaegeuk Kim85010172014-08-11 18:37:46 -07001047
Chao Yucaf00472015-01-28 17:48:42 +08001048 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001049 (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC ||
1050 (cpc->reason == CP_DISCARD && !sbi->discard_blks)))
Jaegeuk Kim85010172014-08-11 18:37:46 -07001051 goto out;
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001052 if (unlikely(f2fs_cp_error(sbi)))
1053 goto out;
Jaegeuk Kim11504a82015-01-23 18:43:45 -08001054 if (f2fs_readonly(sbi->sb))
1055 goto out;
Wanpeng Li2bda5422015-02-27 15:56:16 +08001056
1057 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1058
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001059 if (block_operations(sbi))
1060 goto out;
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001061
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001062 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
Namjae Jeon2af4bd62013-04-23 18:26:54 +09001063
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001064 f2fs_submit_merged_bio(sbi, DATA, WRITE);
1065 f2fs_submit_merged_bio(sbi, NODE, WRITE);
1066 f2fs_submit_merged_bio(sbi, META, WRITE);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001067
1068 /*
1069 * update checkpoint pack index
1070 * Increase the version number so that
1071 * SIT entries and seg summaries are written at correct place
1072 */
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001073 ckpt_ver = cur_cp_version(ckpt);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001074 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
1075
1076 /* write cached NAT/SIT entries to NAT/SIT area */
1077 flush_nat_entries(sbi);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001078 flush_sit_entries(sbi, cpc);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001079
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001080 /* unlock all the fs_lock[] in do_checkpoint() */
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001081 do_checkpoint(sbi, cpc);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001082
1083 unblock_operations(sbi);
Changman Lee942e0be2014-02-13 15:12:29 +09001084 stat_inc_cp_count(sbi->stat_info);
Jaegeuk Kim10027552015-04-09 17:03:53 -07001085
1086 if (cpc->reason == CP_RECOVERY)
1087 f2fs_msg(sbi->sb, KERN_NOTICE,
1088 "checkpoint: version = %llx", ckpt_ver);
Jaegeuk Kim85010172014-08-11 18:37:46 -07001089out:
1090 mutex_unlock(&sbi->cp_mutex);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001091 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001092}
1093
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001094void init_ino_entry_info(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001095{
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001096 int i;
1097
1098 for (i = 0; i < MAX_INO_ENTRY; i++) {
Chao Yu67298802014-11-18 11:18:36 +08001099 struct inode_management *im = &sbi->im[i];
1100
1101 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
1102 spin_lock_init(&im->ino_lock);
1103 INIT_LIST_HEAD(&im->ino_list);
1104 im->ino_num = 0;
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001105 }
1106
Chao Yub5b82202014-08-22 16:17:38 +08001107 sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
Wanpeng Li14b42812015-02-27 17:38:13 +08001108 NR_CURSEG_TYPE - __cp_payload(sbi)) *
1109 F2FS_ORPHANS_PER_BLOCK;
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001110}
1111
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001112int __init create_checkpoint_caches(void)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001113{
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001114 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
1115 sizeof(struct ino_entry));
1116 if (!ino_entry_slab)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001117 return -ENOMEM;
Chao Yu06292072014-12-29 15:56:18 +08001118 inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
1119 sizeof(struct inode_entry));
Jaegeuk Kim6bacf522013-12-06 15:00:58 +09001120 if (!inode_entry_slab) {
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001121 kmem_cache_destroy(ino_entry_slab);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001122 return -ENOMEM;
1123 }
1124 return 0;
1125}
1126
1127void destroy_checkpoint_caches(void)
1128{
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001129 kmem_cache_destroy(ino_entry_slab);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001130 kmem_cache_destroy(inode_entry_slab);
1131}