blob: f661d80474be7ab8f91de74525fa65198cfa68f9 [file] [log] [blame]
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 */
Chao Yu2b947002015-10-12 17:04:21 +080050static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
51 bool is_meta)
Jaegeuk Kim127e6702012-11-02 17:08:18 +090052{
Gu Zheng9df27d92014-01-20 18:37:04 +080053 struct address_space *mapping = META_MAPPING(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +090054 struct page *page;
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -080055 struct f2fs_io_info fio = {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -070056 .sbi = sbi,
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -080057 .type = META,
58 .rw = READ_SYNC | REQ_META | REQ_PRIO,
59 .blk_addr = index,
Jaegeuk Kim4375a332015-04-23 12:04:33 -070060 .encrypted_page = NULL,
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -080061 };
Chao Yu2b947002015-10-12 17:04:21 +080062
63 if (unlikely(!is_meta))
64 fio.rw &= ~REQ_META;
Jaegeuk Kim127e6702012-11-02 17:08:18 +090065repeat:
66 page = grab_cache_page(mapping, index);
67 if (!page) {
68 cond_resched();
69 goto repeat;
70 }
Jaegeuk Kim393ff912013-03-08 21:29:23 +090071 if (PageUptodate(page))
72 goto out;
Jaegeuk Kim127e6702012-11-02 17:08:18 +090073
Jaegeuk Kim05ca3632015-04-23 14:38:15 -070074 fio.page = page;
75
Jaegeuk Kim86531d62015-07-15 13:08:21 -070076 if (f2fs_submit_page_bio(&fio)) {
77 f2fs_put_page(page, 1);
Jaegeuk Kim393ff912013-03-08 21:29:23 +090078 goto repeat;
Jaegeuk Kim86531d62015-07-15 13:08:21 -070079 }
Jaegeuk Kim393ff912013-03-08 21:29:23 +090080
81 lock_page(page);
Jaegeuk Kim6bacf522013-12-06 15:00:58 +090082 if (unlikely(page->mapping != mapping)) {
Jaegeuk Kimafcb7ca02013-04-26 11:55:17 +090083 f2fs_put_page(page, 1);
84 goto repeat;
85 }
Chao Yuf3f338c2015-07-29 17:33:13 +080086
87 /*
88 * if there is any IO error when accessing device, make our filesystem
89 * readonly and make sure do not write checkpoint with non-uptodate
90 * meta page.
91 */
92 if (unlikely(!PageUptodate(page)))
93 f2fs_stop_checkpoint(sbi);
Jaegeuk Kim393ff912013-03-08 21:29:23 +090094out:
Jaegeuk Kim127e6702012-11-02 17:08:18 +090095 return page;
96}
97
Chao Yu2b947002015-10-12 17:04:21 +080098struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
99{
100 return __get_meta_page(sbi, index, true);
101}
102
103/* for POR only */
104struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
105{
106 return __get_meta_page(sbi, index, false);
107}
108
Chao Yuf0c9cad2015-04-18 18:05:36 +0800109bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type)
Chao Yu662befd2014-02-07 16:11:53 +0800110{
111 switch (type) {
112 case META_NAT:
Chao Yu66b00c12014-12-08 14:59:17 +0800113 break;
Chao Yu662befd2014-02-07 16:11:53 +0800114 case META_SIT:
Chao Yu66b00c12014-12-08 14:59:17 +0800115 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
116 return false;
117 break;
Chao Yu81c1a0f12014-02-27 19:12:24 +0800118 case META_SSA:
Chao Yu66b00c12014-12-08 14:59:17 +0800119 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
120 blkaddr < SM_I(sbi)->ssa_blkaddr))
121 return false;
122 break;
Chao Yu662befd2014-02-07 16:11:53 +0800123 case META_CP:
Chao Yu66b00c12014-12-08 14:59:17 +0800124 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
125 blkaddr < __start_cp_addr(sbi)))
126 return false;
127 break;
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700128 case META_POR:
Chao Yu66b00c12014-12-08 14:59:17 +0800129 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
130 blkaddr < MAIN_BLKADDR(sbi)))
131 return false;
132 break;
Chao Yu662befd2014-02-07 16:11:53 +0800133 default:
134 BUG();
135 }
Chao Yu66b00c12014-12-08 14:59:17 +0800136
137 return true;
Chao Yu662befd2014-02-07 16:11:53 +0800138}
139
140/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800141 * Readahead CP/NAT/SIT/SSA pages
Chao Yu662befd2014-02-07 16:11:53 +0800142 */
Chao Yu26879fb2015-10-12 17:05:59 +0800143int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
144 int type, bool sync)
Chao Yu662befd2014-02-07 16:11:53 +0800145{
146 block_t prev_blk_addr = 0;
147 struct page *page;
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700148 block_t blkno = start;
Chao Yu662befd2014-02-07 16:11:53 +0800149 struct f2fs_io_info fio = {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700150 .sbi = sbi,
Chao Yu662befd2014-02-07 16:11:53 +0800151 .type = META,
Chao Yu26879fb2015-10-12 17:05:59 +0800152 .rw = sync ? (READ_SYNC | REQ_META | REQ_PRIO) : READA,
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700153 .encrypted_page = NULL,
Chao Yu662befd2014-02-07 16:11:53 +0800154 };
155
Chao Yu2b947002015-10-12 17:04:21 +0800156 if (unlikely(type == META_POR))
157 fio.rw &= ~REQ_META;
158
Chao Yu662befd2014-02-07 16:11:53 +0800159 for (; nrpages-- > 0; blkno++) {
Chao Yu662befd2014-02-07 16:11:53 +0800160
Chao Yu66b00c12014-12-08 14:59:17 +0800161 if (!is_valid_blkaddr(sbi, blkno, type))
162 goto out;
163
Chao Yu662befd2014-02-07 16:11:53 +0800164 switch (type) {
165 case META_NAT:
Chao Yu66b00c12014-12-08 14:59:17 +0800166 if (unlikely(blkno >=
167 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
Chao Yu662befd2014-02-07 16:11:53 +0800168 blkno = 0;
Chao Yu66b00c12014-12-08 14:59:17 +0800169 /* get nat block addr */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800170 fio.blk_addr = current_nat_addr(sbi,
Chao Yu662befd2014-02-07 16:11:53 +0800171 blkno * NAT_ENTRY_PER_BLOCK);
172 break;
173 case META_SIT:
174 /* get sit block addr */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800175 fio.blk_addr = current_sit_addr(sbi,
Chao Yu662befd2014-02-07 16:11:53 +0800176 blkno * SIT_ENTRY_PER_BLOCK);
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800177 if (blkno != start && prev_blk_addr + 1 != fio.blk_addr)
Chao Yu662befd2014-02-07 16:11:53 +0800178 goto out;
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800179 prev_blk_addr = fio.blk_addr;
Chao Yu662befd2014-02-07 16:11:53 +0800180 break;
Chao Yu81c1a0f12014-02-27 19:12:24 +0800181 case META_SSA:
Chao Yu662befd2014-02-07 16:11:53 +0800182 case META_CP:
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700183 case META_POR:
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800184 fio.blk_addr = blkno;
Chao Yu662befd2014-02-07 16:11:53 +0800185 break;
186 default:
187 BUG();
188 }
189
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800190 page = grab_cache_page(META_MAPPING(sbi), fio.blk_addr);
Chao Yu662befd2014-02-07 16:11:53 +0800191 if (!page)
192 continue;
193 if (PageUptodate(page)) {
Chao Yu662befd2014-02-07 16:11:53 +0800194 f2fs_put_page(page, 1);
195 continue;
196 }
197
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700198 fio.page = page;
199 f2fs_submit_page_mbio(&fio);
Chao Yu662befd2014-02-07 16:11:53 +0800200 f2fs_put_page(page, 0);
201 }
202out:
203 f2fs_submit_merged_bio(sbi, META, READ);
204 return blkno - start;
205}
206
Chao Yu635aee12014-12-08 15:02:52 +0800207void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
208{
209 struct page *page;
210 bool readahead = false;
211
212 page = find_get_page(META_MAPPING(sbi), index);
213 if (!page || (page && !PageUptodate(page)))
214 readahead = true;
215 f2fs_put_page(page, 0);
216
217 if (readahead)
Chao Yu26879fb2015-10-12 17:05:59 +0800218 ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR, true);
Chao Yu635aee12014-12-08 15:02:52 +0800219}
220
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900221static int f2fs_write_meta_page(struct page *page,
222 struct writeback_control *wbc)
223{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700224 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900225
Chao Yuecda0de2014-05-06 16:48:26 +0800226 trace_f2fs_writepage(page, META);
227
Chao Yucaf00472015-01-28 17:48:42 +0800228 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
Chao Yucfb271d2013-12-05 17:15:22 +0800229 goto redirty_out;
Jaegeuk Kim857dc4e2014-11-19 11:03:34 -0800230 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
Chao Yucfb271d2013-12-05 17:15:22 +0800231 goto redirty_out;
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -0700232 if (unlikely(f2fs_cp_error(sbi)))
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700233 goto redirty_out;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900234
Jaegeuk Kim3cb5ad12014-03-18 13:29:07 +0900235 f2fs_wait_on_page_writeback(page, META);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900236 write_meta_page(sbi, page);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900237 dec_page_count(sbi, F2FS_DIRTY_META);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900238 unlock_page(page);
Jaegeuk Kim857dc4e2014-11-19 11:03:34 -0800239
240 if (wbc->for_reclaim)
241 f2fs_submit_merged_bio(sbi, META, WRITE);
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900242 return 0;
Chao Yucfb271d2013-12-05 17:15:22 +0800243
244redirty_out:
Jaegeuk Kim76f60262014-04-15 16:04:15 +0900245 redirty_page_for_writepage(wbc, page);
Chao Yucfb271d2013-12-05 17:15:22 +0800246 return AOP_WRITEPAGE_ACTIVATE;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900247}
248
249static int f2fs_write_meta_pages(struct address_space *mapping,
250 struct writeback_control *wbc)
251{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700252 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900253 long diff, written;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900254
Chao Yue5748432014-05-06 16:51:24 +0800255 trace_f2fs_writepages(mapping->host, wbc, META);
256
Jaegeuk Kim5459aa92013-12-17 17:28:41 +0900257 /* collect a number of dirty meta pages and write together */
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900258 if (wbc->for_kupdate ||
259 get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META))
Jaegeuk Kimd3baf952014-03-18 13:43:05 +0900260 goto skip_write;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900261
262 /* if mounting is failed, skip writing node pages */
263 mutex_lock(&sbi->cp_mutex);
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900264 diff = nr_pages_to_write(sbi, META, wbc);
265 written = sync_meta_pages(sbi, META, wbc->nr_to_write);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900266 mutex_unlock(&sbi->cp_mutex);
Jaegeuk Kim50c8cdb2014-03-18 13:47:11 +0900267 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900268 return 0;
Jaegeuk Kimd3baf952014-03-18 13:43:05 +0900269
270skip_write:
271 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
272 return 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900273}
274
275long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
276 long nr_to_write)
277{
Gu Zheng9df27d92014-01-20 18:37:04 +0800278 struct address_space *mapping = META_MAPPING(sbi);
Jaegeuk Kim6066d8c2015-10-01 16:42:55 -0700279 pgoff_t index = 0, end = LONG_MAX, prev = LONG_MAX;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900280 struct pagevec pvec;
281 long nwritten = 0;
282 struct writeback_control wbc = {
283 .for_reclaim = 0,
284 };
285
286 pagevec_init(&pvec, 0);
287
288 while (index <= end) {
289 int i, nr_pages;
290 nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
291 PAGECACHE_TAG_DIRTY,
292 min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
Chao Yucfb271d2013-12-05 17:15:22 +0800293 if (unlikely(nr_pages == 0))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900294 break;
295
296 for (i = 0; i < nr_pages; i++) {
297 struct page *page = pvec.pages[i];
Jaegeuk Kim203681f2014-02-05 13:03:57 +0900298
Jaegeuk Kim6066d8c2015-10-01 16:42:55 -0700299 if (prev == LONG_MAX)
300 prev = page->index - 1;
301 if (nr_to_write != LONG_MAX && page->index != prev + 1) {
302 pagevec_release(&pvec);
303 goto stop;
304 }
305
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900306 lock_page(page);
Jaegeuk Kim203681f2014-02-05 13:03:57 +0900307
308 if (unlikely(page->mapping != mapping)) {
309continue_unlock:
310 unlock_page(page);
311 continue;
312 }
313 if (!PageDirty(page)) {
314 /* someone wrote it for us */
315 goto continue_unlock;
316 }
317
318 if (!clear_page_dirty_for_io(page))
319 goto continue_unlock;
320
Chao Yu97dc3fd2015-02-16 16:19:22 +0800321 if (mapping->a_ops->writepage(page, &wbc)) {
Jaegeuk Kim577e3492013-01-24 19:56:11 +0900322 unlock_page(page);
323 break;
324 }
Chao Yucfb271d2013-12-05 17:15:22 +0800325 nwritten++;
Jaegeuk Kim6066d8c2015-10-01 16:42:55 -0700326 prev = page->index;
Chao Yucfb271d2013-12-05 17:15:22 +0800327 if (unlikely(nwritten >= nr_to_write))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900328 break;
329 }
330 pagevec_release(&pvec);
331 cond_resched();
332 }
Jaegeuk Kim6066d8c2015-10-01 16:42:55 -0700333stop:
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900334 if (nwritten)
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900335 f2fs_submit_merged_bio(sbi, type, WRITE);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900336
337 return nwritten;
338}
339
340static int f2fs_set_meta_page_dirty(struct page *page)
341{
Jaegeuk Kim26c6b882013-10-24 17:53:29 +0900342 trace_f2fs_set_page_dirty(page, META);
343
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900344 SetPageUptodate(page);
345 if (!PageDirty(page)) {
346 __set_page_dirty_nobuffers(page);
Jaegeuk Kim40813632014-09-02 15:31:18 -0700347 inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META);
Chao Yu16018392015-01-19 20:24:37 +0800348 SetPagePrivate(page);
Jaegeuk Kim9e4ded32014-12-17 19:58:58 -0800349 f2fs_trace_pid(page);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900350 return 1;
351 }
352 return 0;
353}
354
355const struct address_space_operations f2fs_meta_aops = {
356 .writepage = f2fs_write_meta_page,
357 .writepages = f2fs_write_meta_pages,
358 .set_page_dirty = f2fs_set_meta_page_dirty,
Chao Yu487261f2015-02-05 17:44:29 +0800359 .invalidatepage = f2fs_invalidate_page,
360 .releasepage = f2fs_release_page,
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900361};
362
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700363static void __add_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 Kim80c54502015-08-20 08:51:56 -0700366 struct ino_entry *e, *tmp;
367
368 tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700369retry:
Jaegeuk Kim80c54502015-08-20 08:51:56 -0700370 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
Jaegeuk Kim769ec6e2014-12-03 20:47:26 -0800371
Chao Yu67298802014-11-18 11:18:36 +0800372 spin_lock(&im->ino_lock);
Chao Yu67298802014-11-18 11:18:36 +0800373 e = radix_tree_lookup(&im->ino_root, ino);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700374 if (!e) {
Jaegeuk Kim80c54502015-08-20 08:51:56 -0700375 e = tmp;
Chao Yu67298802014-11-18 11:18:36 +0800376 if (radix_tree_insert(&im->ino_root, ino, e)) {
377 spin_unlock(&im->ino_lock);
Jaegeuk Kim769ec6e2014-12-03 20:47:26 -0800378 radix_tree_preload_end();
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700379 goto retry;
380 }
381 memset(e, 0, sizeof(struct ino_entry));
382 e->ino = ino;
383
Chao Yu67298802014-11-18 11:18:36 +0800384 list_add_tail(&e->list, &im->ino_list);
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800385 if (type != ORPHAN_INO)
Chao Yu67298802014-11-18 11:18:36 +0800386 im->ino_num++;
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700387 }
Chao Yu67298802014-11-18 11:18:36 +0800388 spin_unlock(&im->ino_lock);
Jaegeuk Kim769ec6e2014-12-03 20:47:26 -0800389 radix_tree_preload_end();
Jaegeuk Kim80c54502015-08-20 08:51:56 -0700390
391 if (e != tmp)
392 kmem_cache_free(ino_entry_slab, tmp);
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700393}
394
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700395static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700396{
Chao Yu67298802014-11-18 11:18:36 +0800397 struct inode_management *im = &sbi->im[type];
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700398 struct ino_entry *e;
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700399
Chao Yu67298802014-11-18 11:18:36 +0800400 spin_lock(&im->ino_lock);
401 e = radix_tree_lookup(&im->ino_root, ino);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700402 if (e) {
403 list_del(&e->list);
Chao Yu67298802014-11-18 11:18:36 +0800404 radix_tree_delete(&im->ino_root, ino);
405 im->ino_num--;
406 spin_unlock(&im->ino_lock);
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700407 kmem_cache_free(ino_entry_slab, e);
408 return;
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700409 }
Chao Yu67298802014-11-18 11:18:36 +0800410 spin_unlock(&im->ino_lock);
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700411}
412
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700413void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type)
414{
415 /* add new dirty ino entry into list */
416 __add_ino_entry(sbi, ino, type);
417}
418
419void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type)
420{
421 /* remove dirty ino entry from list */
422 __remove_ino_entry(sbi, ino, type);
423}
424
425/* mode should be APPEND_INO or UPDATE_INO */
426bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
427{
Chao Yu67298802014-11-18 11:18:36 +0800428 struct inode_management *im = &sbi->im[mode];
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700429 struct ino_entry *e;
Chao Yu67298802014-11-18 11:18:36 +0800430
431 spin_lock(&im->ino_lock);
432 e = radix_tree_lookup(&im->ino_root, ino);
433 spin_unlock(&im->ino_lock);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700434 return e ? true : false;
435}
436
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -0700437void release_dirty_inode(struct f2fs_sb_info *sbi)
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700438{
439 struct ino_entry *e, *tmp;
440 int i;
441
442 for (i = APPEND_INO; i <= UPDATE_INO; i++) {
Chao Yu67298802014-11-18 11:18:36 +0800443 struct inode_management *im = &sbi->im[i];
444
445 spin_lock(&im->ino_lock);
446 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700447 list_del(&e->list);
Chao Yu67298802014-11-18 11:18:36 +0800448 radix_tree_delete(&im->ino_root, e->ino);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700449 kmem_cache_free(ino_entry_slab, e);
Chao Yu67298802014-11-18 11:18:36 +0800450 im->ino_num--;
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700451 }
Chao Yu67298802014-11-18 11:18:36 +0800452 spin_unlock(&im->ino_lock);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700453 }
454}
455
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900456int acquire_orphan_inode(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900457{
Chao Yu67298802014-11-18 11:18:36 +0800458 struct inode_management *im = &sbi->im[ORPHAN_INO];
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900459 int err = 0;
460
Chao Yu67298802014-11-18 11:18:36 +0800461 spin_lock(&im->ino_lock);
462 if (unlikely(im->ino_num >= sbi->max_orphans))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900463 err = -ENOSPC;
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900464 else
Chao Yu67298802014-11-18 11:18:36 +0800465 im->ino_num++;
466 spin_unlock(&im->ino_lock);
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800467
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900468 return err;
469}
470
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900471void release_orphan_inode(struct f2fs_sb_info *sbi)
472{
Chao Yu67298802014-11-18 11:18:36 +0800473 struct inode_management *im = &sbi->im[ORPHAN_INO];
474
475 spin_lock(&im->ino_lock);
476 f2fs_bug_on(sbi, im->ino_num == 0);
477 im->ino_num--;
478 spin_unlock(&im->ino_lock);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +0900479}
480
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900481void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
482{
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700483 /* add new orphan ino entry into list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700484 __add_ino_entry(sbi, ino, ORPHAN_INO);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900485}
486
487void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
488{
Jaegeuk Kim953e6cc2014-07-25 15:47:16 -0700489 /* remove orphan entry from orphan list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700490 __remove_ino_entry(sbi, ino, ORPHAN_INO);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900491}
492
Chao Yu8c14bfa2015-08-07 17:58:43 +0800493static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900494{
Chao Yu8c14bfa2015-08-07 17:58:43 +0800495 struct inode *inode;
496
497 inode = f2fs_iget(sbi->sb, ino);
498 if (IS_ERR(inode)) {
499 /*
500 * there should be a bug that we can't find the entry
501 * to orphan inode.
502 */
503 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);
504 return PTR_ERR(inode);
505 }
506
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900507 clear_nlink(inode);
508
509 /* truncate all the data during iput */
510 iput(inode);
Chao Yu8c14bfa2015-08-07 17:58:43 +0800511 return 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900512}
513
Chao Yu8c14bfa2015-08-07 17:58:43 +0800514int recover_orphan_inodes(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900515{
Wanpeng Li3c642982015-02-26 07:57:21 +0800516 block_t start_blk, orphan_blocks, i, j;
Chao Yu8c14bfa2015-08-07 17:58:43 +0800517 int err;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900518
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900519 if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG))
Chao Yu8c14bfa2015-08-07 17:58:43 +0800520 return 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900521
Wanpeng Li55141482015-02-26 07:57:20 +0800522 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
Wanpeng Li3c642982015-02-26 07:57:21 +0800523 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900524
Chao Yu26879fb2015-10-12 17:05:59 +0800525 ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
Chao Yu662befd2014-02-07 16:11:53 +0800526
Wanpeng Li3c642982015-02-26 07:57:21 +0800527 for (i = 0; i < orphan_blocks; i++) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900528 struct page *page = get_meta_page(sbi, start_blk + i);
529 struct f2fs_orphan_block *orphan_blk;
530
531 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
532 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
533 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
Chao Yu8c14bfa2015-08-07 17:58:43 +0800534 err = recover_orphan_inode(sbi, ino);
535 if (err) {
536 f2fs_put_page(page, 1);
Chao Yu8c14bfa2015-08-07 17:58:43 +0800537 return err;
538 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900539 }
540 f2fs_put_page(page, 1);
541 }
542 /* clear Orphan Flag */
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900543 clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG);
Chao Yu8c14bfa2015-08-07 17:58:43 +0800544 return 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900545}
546
547static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
548{
Gu Zheng502c6e02013-11-19 18:03:58 +0800549 struct list_head *head;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900550 struct f2fs_orphan_block *orphan_blk = NULL;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900551 unsigned int nentries = 0;
Chao Yubd936f82015-07-13 17:44:25 +0800552 unsigned short index = 1;
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800553 unsigned short orphan_blocks;
Gu Zheng45319292014-01-10 18:09:02 +0800554 struct page *page = NULL;
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700555 struct ino_entry *orphan = NULL;
Chao Yu67298802014-11-18 11:18:36 +0800556 struct inode_management *im = &sbi->im[ORPHAN_INO];
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900557
Chao Yu67298802014-11-18 11:18:36 +0800558 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800559
Jaegeuk Kimd6c67a42015-05-01 11:08:59 -0700560 /*
561 * we don't need to do spin_lock(&im->ino_lock) here, since all the
562 * orphan inode operations are covered under f2fs_lock_op().
563 * And, spin_lock should be avoided due to page operations below.
564 */
Chao Yu67298802014-11-18 11:18:36 +0800565 head = &im->ino_list;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900566
567 /* loop for each orphan inode entry and write them in Jornal block */
Gu Zheng502c6e02013-11-19 18:03:58 +0800568 list_for_each_entry(orphan, head, list) {
569 if (!page) {
Chao Yubd936f82015-07-13 17:44:25 +0800570 page = grab_meta_page(sbi, start_blk++);
Gu Zheng502c6e02013-11-19 18:03:58 +0800571 orphan_blk =
572 (struct f2fs_orphan_block *)page_address(page);
573 memset(orphan_blk, 0, sizeof(*orphan_blk));
574 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900575
Gu Zheng36795562013-11-26 16:44:16 +0800576 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900577
Gu Zheng36795562013-11-26 16:44:16 +0800578 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900579 /*
580 * an orphan block is full of 1020 entries,
581 * then we need to flush current orphan blocks
582 * and bring another one in memory
583 */
584 orphan_blk->blk_addr = cpu_to_le16(index);
585 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
586 orphan_blk->entry_count = cpu_to_le32(nentries);
587 set_page_dirty(page);
588 f2fs_put_page(page, 1);
589 index++;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900590 nentries = 0;
591 page = NULL;
592 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900593 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900594
Gu Zheng502c6e02013-11-19 18:03:58 +0800595 if (page) {
596 orphan_blk->blk_addr = cpu_to_le16(index);
597 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
598 orphan_blk->entry_count = cpu_to_le32(nentries);
599 set_page_dirty(page);
600 f2fs_put_page(page, 1);
601 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900602}
603
604static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
605 block_t cp_addr, unsigned long long *version)
606{
607 struct page *cp_page_1, *cp_page_2 = NULL;
608 unsigned long blk_size = sbi->blocksize;
609 struct f2fs_checkpoint *cp_block;
610 unsigned long long cur_version = 0, pre_version = 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900611 size_t crc_offset;
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900612 __u32 crc = 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900613
614 /* Read the 1st cp block in this CP pack */
615 cp_page_1 = get_meta_page(sbi, cp_addr);
616
617 /* get the version number */
618 cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1);
619 crc_offset = le32_to_cpu(cp_block->checksum_offset);
620 if (crc_offset >= blk_size)
621 goto invalid_cp1;
622
Jaegeuk Kim29e70432015-02-10 16:23:12 -0800623 crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset)));
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900624 if (!f2fs_crc_valid(crc, cp_block, crc_offset))
625 goto invalid_cp1;
626
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900627 pre_version = cur_cp_version(cp_block);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900628
629 /* Read the 2nd cp block in this CP pack */
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900630 cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900631 cp_page_2 = get_meta_page(sbi, cp_addr);
632
633 cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2);
634 crc_offset = le32_to_cpu(cp_block->checksum_offset);
635 if (crc_offset >= blk_size)
636 goto invalid_cp2;
637
Jaegeuk Kim29e70432015-02-10 16:23:12 -0800638 crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset)));
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900639 if (!f2fs_crc_valid(crc, cp_block, crc_offset))
640 goto invalid_cp2;
641
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900642 cur_version = cur_cp_version(cp_block);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900643
644 if (cur_version == pre_version) {
645 *version = cur_version;
646 f2fs_put_page(cp_page_2, 1);
647 return cp_page_1;
648 }
649invalid_cp2:
650 f2fs_put_page(cp_page_2, 1);
651invalid_cp1:
652 f2fs_put_page(cp_page_1, 1);
653 return NULL;
654}
655
656int get_valid_checkpoint(struct f2fs_sb_info *sbi)
657{
658 struct f2fs_checkpoint *cp_block;
659 struct f2fs_super_block *fsb = sbi->raw_super;
660 struct page *cp1, *cp2, *cur_page;
661 unsigned long blk_size = sbi->blocksize;
662 unsigned long long cp1_version = 0, cp2_version = 0;
663 unsigned long long cp_start_blk_no;
Wanpeng Li55141482015-02-26 07:57:20 +0800664 unsigned int cp_blks = 1 + __cp_payload(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +0900665 block_t cp_blk_no;
666 int i;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900667
Changman Lee1dbe4152014-05-12 12:27:43 +0900668 sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900669 if (!sbi->ckpt)
670 return -ENOMEM;
671 /*
672 * Finding out valid cp block involves read both
673 * sets( cp pack1 and cp pack 2)
674 */
675 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
676 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
677
678 /* The second checkpoint pack should start at the next segment */
Jaegeuk Kimf9a4e6d2013-11-28 12:44:05 +0900679 cp_start_blk_no += ((unsigned long long)1) <<
680 le32_to_cpu(fsb->log_blocks_per_seg);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900681 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
682
683 if (cp1 && cp2) {
684 if (ver_after(cp2_version, cp1_version))
685 cur_page = cp2;
686 else
687 cur_page = cp1;
688 } else if (cp1) {
689 cur_page = cp1;
690 } else if (cp2) {
691 cur_page = cp2;
692 } else {
693 goto fail_no_cp;
694 }
695
696 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
697 memcpy(sbi->ckpt, cp_block, blk_size);
698
Changman Lee1dbe4152014-05-12 12:27:43 +0900699 if (cp_blks <= 1)
700 goto done;
701
702 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
703 if (cur_page == cp2)
704 cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg);
705
706 for (i = 1; i < cp_blks; i++) {
707 void *sit_bitmap_ptr;
708 unsigned char *ckpt = (unsigned char *)sbi->ckpt;
709
710 cur_page = get_meta_page(sbi, cp_blk_no + i);
711 sit_bitmap_ptr = page_address(cur_page);
712 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
713 f2fs_put_page(cur_page, 1);
714 }
715done:
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900716 f2fs_put_page(cp1, 1);
717 f2fs_put_page(cp2, 1);
718 return 0;
719
720fail_no_cp:
721 kfree(sbi->ckpt);
722 return -EINVAL;
723}
724
Chao Yu06292072014-12-29 15:56:18 +0800725static int __add_dirty_inode(struct inode *inode, struct inode_entry *new)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900726{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700727 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900728
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900729 if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR))
730 return -EEXIST;
Chao Yu2d7b8222014-03-29 11:33:17 +0800731
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900732 set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR);
733 F2FS_I(inode)->dirty_dir = new;
734 list_add_tail(&new->list, &sbi->dir_inode_list);
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +0900735 stat_inc_dirty_dir(sbi);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900736 return 0;
737}
738
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700739void update_dirty_page(struct inode *inode, struct page *page)
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900740{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700741 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu06292072014-12-29 15:56:18 +0800742 struct inode_entry *new;
Chao Yucf0ee0f2014-04-02 08:55:00 +0800743 int ret = 0;
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900744
Chao Yu5ac9f362015-06-29 18:14:10 +0800745 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
746 !S_ISLNK(inode->i_mode))
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900747 return;
Gu Zheng7bd59382013-10-22 14:52:26 +0800748
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700749 if (!S_ISDIR(inode->i_mode)) {
750 inode_inc_dirty_pages(inode);
751 goto out;
752 }
753
Gu Zheng7bd59382013-10-22 14:52:26 +0800754 new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900755 new->inode = inode;
756 INIT_LIST_HEAD(&new->list);
757
758 spin_lock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800759 ret = __add_dirty_inode(inode, new);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700760 inode_inc_dirty_pages(inode);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900761 spin_unlock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800762
763 if (ret)
764 kmem_cache_free(inode_entry_slab, new);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700765out:
766 SetPagePrivate(page);
Jaegeuk Kim9e4ded32014-12-17 19:58:58 -0800767 f2fs_trace_pid(page);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900768}
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900769
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900770void add_dirty_dir_inode(struct inode *inode)
771{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700772 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu06292072014-12-29 15:56:18 +0800773 struct inode_entry *new =
Gu Zheng7bd59382013-10-22 14:52:26 +0800774 f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800775 int ret = 0;
Gu Zheng7bd59382013-10-22 14:52:26 +0800776
Jaegeuk Kim5deb8262013-06-05 17:42:45 +0900777 new->inode = inode;
778 INIT_LIST_HEAD(&new->list);
779
780 spin_lock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800781 ret = __add_dirty_inode(inode, new);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900782 spin_unlock(&sbi->dir_inode_lock);
Chao Yucf0ee0f2014-04-02 08:55:00 +0800783
784 if (ret)
785 kmem_cache_free(inode_entry_slab, new);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900786}
787
788void remove_dirty_dir_inode(struct inode *inode)
789{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700790 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu06292072014-12-29 15:56:18 +0800791 struct inode_entry *entry;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900792
793 if (!S_ISDIR(inode->i_mode))
794 return;
795
796 spin_lock(&sbi->dir_inode_lock);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700797 if (get_dirty_pages(inode) ||
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900798 !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) {
Jaegeuk Kim3b10b1f2013-05-27 10:32:01 +0900799 spin_unlock(&sbi->dir_inode_lock);
800 return;
801 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900802
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900803 entry = F2FS_I(inode)->dirty_dir;
804 list_del(&entry->list);
805 F2FS_I(inode)->dirty_dir = NULL;
806 clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR);
807 stat_dec_dirty_dir(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900808 spin_unlock(&sbi->dir_inode_lock);
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900809 kmem_cache_free(inode_entry_slab, entry);
Jaegeuk Kim74d0b912013-05-15 16:40:02 +0900810
811 /* Only from the recovery routine */
Jaegeuk Kimafc3eda2013-05-28 09:59:27 +0900812 if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) {
813 clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT);
Jaegeuk Kim74d0b912013-05-15 16:40:02 +0900814 iput(inode);
Jaegeuk Kimafc3eda2013-05-28 09:59:27 +0900815 }
Jaegeuk Kim74d0b912013-05-15 16:40:02 +0900816}
817
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900818void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi)
819{
Gu Zhengce3b7d82013-11-19 18:03:47 +0800820 struct list_head *head;
Chao Yu06292072014-12-29 15:56:18 +0800821 struct inode_entry *entry;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900822 struct inode *inode;
823retry:
Jaegeuk Kimaf41d3e2014-10-17 14:14:16 -0700824 if (unlikely(f2fs_cp_error(sbi)))
825 return;
826
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900827 spin_lock(&sbi->dir_inode_lock);
Gu Zhengce3b7d82013-11-19 18:03:47 +0800828
829 head = &sbi->dir_inode_list;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900830 if (list_empty(head)) {
831 spin_unlock(&sbi->dir_inode_lock);
832 return;
833 }
Chao Yu06292072014-12-29 15:56:18 +0800834 entry = list_entry(head->next, struct inode_entry, list);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900835 inode = igrab(entry->inode);
836 spin_unlock(&sbi->dir_inode_lock);
837 if (inode) {
Jaegeuk Kim87d6f892014-03-18 12:40:49 +0900838 filemap_fdatawrite(inode->i_mapping);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900839 iput(inode);
840 } else {
841 /*
842 * We should submit bio, since it exists several
843 * wribacking dentry pages in the freeing inode.
844 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900845 f2fs_submit_merged_bio(sbi, DATA, WRITE);
Sebastian Andrzej Siewior7ecebe52015-02-27 13:13:14 +0100846 cond_resched();
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900847 }
848 goto retry;
849}
850
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900851/*
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900852 * Freeze all the FS-operations for checkpoint.
853 */
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700854static int block_operations(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900855{
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900856 struct writeback_control wbc = {
857 .sync_mode = WB_SYNC_ALL,
858 .nr_to_write = LONG_MAX,
859 .for_reclaim = 0,
860 };
Jaegeuk Kimc718379b2013-04-24 13:19:56 +0900861 struct blk_plug plug;
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700862 int err = 0;
Jaegeuk Kimc718379b2013-04-24 13:19:56 +0900863
864 blk_start_plug(&plug);
865
Jaegeuk Kim39936832012-11-22 16:21:29 +0900866retry_flush_dents:
Gu Zhenge4795562013-09-27 18:08:30 +0800867 f2fs_lock_all(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900868 /* write all the dirty dentry pages */
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900869 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
Gu Zhenge4795562013-09-27 18:08:30 +0800870 f2fs_unlock_all(sbi);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900871 sync_dirty_dir_inodes(sbi);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700872 if (unlikely(f2fs_cp_error(sbi))) {
873 err = -EIO;
874 goto out;
875 }
Jaegeuk Kim39936832012-11-22 16:21:29 +0900876 goto retry_flush_dents;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900877 }
878
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900879 /*
arter97e1c42042014-08-06 23:22:50 +0900880 * POR: we should ensure that there are no dirty node pages
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900881 * until finishing nat/sit flush.
882 */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900883retry_flush_nodes:
Chao Yub3582c62014-07-03 18:58:39 +0800884 down_write(&sbi->node_write);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900885
886 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
Chao Yub3582c62014-07-03 18:58:39 +0800887 up_write(&sbi->node_write);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900888 sync_node_pages(sbi, 0, &wbc);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700889 if (unlikely(f2fs_cp_error(sbi))) {
890 f2fs_unlock_all(sbi);
891 err = -EIO;
892 goto out;
893 }
Jaegeuk Kim39936832012-11-22 16:21:29 +0900894 goto retry_flush_nodes;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900895 }
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700896out:
Jaegeuk Kimc718379b2013-04-24 13:19:56 +0900897 blk_finish_plug(&plug);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700898 return err;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900899}
900
901static void unblock_operations(struct f2fs_sb_info *sbi)
902{
Chao Yub3582c62014-07-03 18:58:39 +0800903 up_write(&sbi->node_write);
Gu Zhenge4795562013-09-27 18:08:30 +0800904 f2fs_unlock_all(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900905}
906
Changman Leefb51b5e2013-11-07 12:48:25 +0900907static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi)
908{
909 DEFINE_WAIT(wait);
910
911 for (;;) {
912 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
913
914 if (!get_pages(sbi, F2FS_WRITEBACK))
915 break;
916
917 io_schedule();
918 }
919 finish_wait(&sbi->cp_wait, &wait);
920}
921
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700922static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900923{
924 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -0700925 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
Huang Ying77041822014-09-12 20:19:48 +0800926 struct f2fs_nm_info *nm_i = NM_I(sbi);
Chao Yu67298802014-11-18 11:18:36 +0800927 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
Huang Ying77041822014-09-12 20:19:48 +0800928 nid_t last_nid = nm_i->next_scan_nid;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900929 block_t start_blk;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900930 unsigned int data_sum_blocks, orphan_blocks;
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900931 __u32 crc32 = 0;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900932 int i;
Wanpeng Li55141482015-02-26 07:57:20 +0800933 int cp_payload_blks = __cp_payload(sbi);
Chao Yue90c2d22015-07-28 18:36:47 +0800934 block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg);
935 bool invalidate = false;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900936
Jaegeuk Kim1e87a782014-04-15 13:57:55 +0900937 /*
938 * This avoids to conduct wrong roll-forward operations and uses
939 * metapages, so should be called prior to sync_meta_pages below.
940 */
Chao Yue90c2d22015-07-28 18:36:47 +0800941 if (discard_next_dnode(sbi, discard_blk))
942 invalidate = true;
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900943
944 /* Flush all the NAT/SIT pages */
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700945 while (get_pages(sbi, F2FS_DIRTY_META)) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900946 sync_meta_pages(sbi, META, LONG_MAX);
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -0700947 if (unlikely(f2fs_cp_error(sbi)))
948 return;
949 }
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900950
951 next_free_nid(sbi, &last_nid);
952
953 /*
954 * modify checkpoint
955 * version number is already updated
956 */
957 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi));
958 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
959 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
Chao Yub5b82202014-08-22 16:17:38 +0800960 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900961 ckpt->cur_node_segno[i] =
962 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE));
963 ckpt->cur_node_blkoff[i] =
964 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE));
965 ckpt->alloc_type[i + CURSEG_HOT_NODE] =
966 curseg_alloc_type(sbi, i + CURSEG_HOT_NODE);
967 }
Chao Yub5b82202014-08-22 16:17:38 +0800968 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900969 ckpt->cur_data_segno[i] =
970 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA));
971 ckpt->cur_data_blkoff[i] =
972 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA));
973 ckpt->alloc_type[i + CURSEG_HOT_DATA] =
974 curseg_alloc_type(sbi, i + CURSEG_HOT_DATA);
975 }
976
977 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
978 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
979 ckpt->next_free_nid = cpu_to_le32(last_nid);
980
981 /* 2 cp + n data seg summary + orphan inode blocks */
Chao Yu3fa06d72014-12-09 14:21:46 +0800982 data_sum_blocks = npages_for_summary_flush(sbi, false);
Chao Yub5b82202014-08-22 16:17:38 +0800983 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900984 set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900985 else
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900986 clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900987
Chao Yu67298802014-11-18 11:18:36 +0800988 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
Changman Lee1dbe4152014-05-12 12:27:43 +0900989 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
990 orphan_blocks);
Jaegeuk Kim127e6702012-11-02 17:08:18 +0900991
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800992 if (__remain_node_summaries(cpc->reason))
Chao Yub5b82202014-08-22 16:17:38 +0800993 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+
Changman Lee1dbe4152014-05-12 12:27:43 +0900994 cp_payload_blks + data_sum_blocks +
995 orphan_blocks + NR_CURSEG_NODE_TYPE);
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800996 else
Chao Yub5b82202014-08-22 16:17:38 +0800997 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
Changman Lee1dbe4152014-05-12 12:27:43 +0900998 cp_payload_blks + data_sum_blocks +
999 orphan_blocks);
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001000
1001 if (cpc->reason == CP_UMOUNT)
1002 set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1003 else
1004 clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1005
1006 if (cpc->reason == CP_FASTBOOT)
1007 set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1008 else
1009 clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001010
Chao Yu67298802014-11-18 11:18:36 +08001011 if (orphan_num)
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001012 set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001013 else
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001014 clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001015
Chao Yucaf00472015-01-28 17:48:42 +08001016 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
Jaegeuk Kim2ae4c672014-09-02 15:43:52 -07001017 set_ckpt_flags(ckpt, CP_FSCK_FLAG);
1018
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001019 /* update SIT/NAT bitmap */
1020 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
1021 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
1022
1023 crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset));
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +09001024 *((__le32 *)((unsigned char *)ckpt +
1025 le32_to_cpu(ckpt->checksum_offset)))
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001026 = cpu_to_le32(crc32);
1027
1028 start_blk = __start_cp_addr(sbi);
1029
Jaegeuk Kima7230d12015-09-16 14:06:54 -07001030 /* need to wait for end_io results */
1031 wait_on_all_pages_writeback(sbi);
1032 if (unlikely(f2fs_cp_error(sbi)))
1033 return;
1034
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001035 /* write out checkpoint buffer at block 0 */
Chao Yu381722d2015-05-19 17:40:04 +08001036 update_meta_page(sbi, ckpt, start_blk++);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001037
Chao Yu381722d2015-05-19 17:40:04 +08001038 for (i = 1; i < 1 + cp_payload_blks; i++)
1039 update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
1040 start_blk++);
Changman Lee1dbe4152014-05-12 12:27:43 +09001041
Chao Yu67298802014-11-18 11:18:36 +08001042 if (orphan_num) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001043 write_orphan_inodes(sbi, start_blk);
1044 start_blk += orphan_blocks;
1045 }
1046
1047 write_data_summaries(sbi, start_blk);
1048 start_blk += data_sum_blocks;
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001049 if (__remain_node_summaries(cpc->reason)) {
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001050 write_node_summaries(sbi, start_blk);
1051 start_blk += NR_CURSEG_NODE_TYPE;
1052 }
1053
1054 /* writeout checkpoint block */
Chao Yu381722d2015-05-19 17:40:04 +08001055 update_meta_page(sbi, ckpt, start_blk);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001056
1057 /* wait for previous submitted node/meta pages writeback */
Changman Leefb51b5e2013-11-07 12:48:25 +09001058 wait_on_all_pages_writeback(sbi);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001059
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001060 if (unlikely(f2fs_cp_error(sbi)))
1061 return;
1062
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +09001063 filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX);
Gu Zheng9df27d92014-01-20 18:37:04 +08001064 filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001065
1066 /* update user_block_counts */
1067 sbi->last_valid_block_count = sbi->total_valid_block_count;
1068 sbi->alloc_valid_block_count = 0;
1069
1070 /* Here, we only have one bio having CP pack */
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001071 sync_meta_pages(sbi, META_FLUSH, LONG_MAX);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001072
Jaegeuk Kim6a8f8ca2014-10-29 14:37:22 -07001073 /* wait for previous submitted meta pages writeback */
1074 wait_on_all_pages_writeback(sbi);
1075
Chao Yue90c2d22015-07-28 18:36:47 +08001076 /*
1077 * invalidate meta page which is used temporarily for zeroing out
1078 * block at the end of warm node chain.
1079 */
1080 if (invalidate)
1081 invalidate_mapping_pages(META_MAPPING(sbi), discard_blk,
1082 discard_blk);
1083
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001084 release_dirty_inode(sbi);
1085
1086 if (unlikely(f2fs_cp_error(sbi)))
1087 return;
1088
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001089 clear_prefree_segments(sbi, cpc);
Chao Yucaf00472015-01-28 17:48:42 +08001090 clear_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001091}
1092
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001093/*
arter97e1c42042014-08-06 23:22:50 +09001094 * We guarantee that this checkpoint procedure will not fail.
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001095 */
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001096void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001097{
1098 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1099 unsigned long long ckpt_ver;
1100
Jaegeuk Kim43727522013-02-04 15:11:17 +09001101 mutex_lock(&sbi->cp_mutex);
Jaegeuk Kim85010172014-08-11 18:37:46 -07001102
Chao Yucaf00472015-01-28 17:48:42 +08001103 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001104 (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC ||
1105 (cpc->reason == CP_DISCARD && !sbi->discard_blks)))
Jaegeuk Kim85010172014-08-11 18:37:46 -07001106 goto out;
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001107 if (unlikely(f2fs_cp_error(sbi)))
1108 goto out;
Jaegeuk Kim11504a82015-01-23 18:43:45 -08001109 if (f2fs_readonly(sbi->sb))
1110 goto out;
Wanpeng Li2bda5422015-02-27 15:56:16 +08001111
1112 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1113
Jaegeuk Kimcf779ca2014-08-11 18:37:46 -07001114 if (block_operations(sbi))
1115 goto out;
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001116
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001117 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
Namjae Jeon2af4bd62013-04-23 18:26:54 +09001118
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001119 f2fs_submit_merged_bio(sbi, DATA, WRITE);
1120 f2fs_submit_merged_bio(sbi, NODE, WRITE);
1121 f2fs_submit_merged_bio(sbi, META, WRITE);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001122
1123 /*
1124 * update checkpoint pack index
1125 * Increase the version number so that
1126 * SIT entries and seg summaries are written at correct place
1127 */
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001128 ckpt_ver = cur_cp_version(ckpt);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001129 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
1130
1131 /* write cached NAT/SIT entries to NAT/SIT area */
1132 flush_nat_entries(sbi);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001133 flush_sit_entries(sbi, cpc);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001134
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001135 /* unlock all the fs_lock[] in do_checkpoint() */
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001136 do_checkpoint(sbi, cpc);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001137
1138 unblock_operations(sbi);
Changman Lee942e0be2014-02-13 15:12:29 +09001139 stat_inc_cp_count(sbi->stat_info);
Jaegeuk Kim10027552015-04-09 17:03:53 -07001140
1141 if (cpc->reason == CP_RECOVERY)
1142 f2fs_msg(sbi->sb, KERN_NOTICE,
1143 "checkpoint: version = %llx", ckpt_ver);
Jaegeuk Kim60b99b42015-10-05 14:49:57 -07001144
1145 /* do checkpoint periodically */
1146 sbi->cp_expires = round_jiffies_up(jiffies + HZ * sbi->cp_interval);
Jaegeuk Kim85010172014-08-11 18:37:46 -07001147out:
1148 mutex_unlock(&sbi->cp_mutex);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001149 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001150}
1151
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001152void init_ino_entry_info(struct f2fs_sb_info *sbi)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001153{
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001154 int i;
1155
1156 for (i = 0; i < MAX_INO_ENTRY; i++) {
Chao Yu67298802014-11-18 11:18:36 +08001157 struct inode_management *im = &sbi->im[i];
1158
1159 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
1160 spin_lock_init(&im->ino_lock);
1161 INIT_LIST_HEAD(&im->ino_list);
1162 im->ino_num = 0;
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001163 }
1164
Chao Yub5b82202014-08-22 16:17:38 +08001165 sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
Wanpeng Li14b42812015-02-27 17:38:13 +08001166 NR_CURSEG_TYPE - __cp_payload(sbi)) *
1167 F2FS_ORPHANS_PER_BLOCK;
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001168}
1169
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001170int __init create_checkpoint_caches(void)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001171{
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001172 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
1173 sizeof(struct ino_entry));
1174 if (!ino_entry_slab)
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001175 return -ENOMEM;
Chao Yu06292072014-12-29 15:56:18 +08001176 inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
1177 sizeof(struct inode_entry));
Jaegeuk Kim6bacf522013-12-06 15:00:58 +09001178 if (!inode_entry_slab) {
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001179 kmem_cache_destroy(ino_entry_slab);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001180 return -ENOMEM;
1181 }
1182 return 0;
1183}
1184
1185void destroy_checkpoint_caches(void)
1186{
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001187 kmem_cache_destroy(ino_entry_slab);
Jaegeuk Kim127e6702012-11-02 17:08:18 +09001188 kmem_cache_destroy(inode_entry_slab);
1189}