Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1 | /* |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 2 | * 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 Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 23 | #include "trace.h" |
Namjae Jeon | 2af4bd6 | 2013-04-23 18:26:54 +0900 | [diff] [blame] | 24 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 25 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 26 | static struct kmem_cache *ino_entry_slab; |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 27 | struct kmem_cache *inode_entry_slab; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 28 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 29 | /* |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 30 | * We guarantee no failure on the returned page. |
| 31 | */ |
| 32 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
| 33 | { |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 34 | struct address_space *mapping = META_MAPPING(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 35 | struct page *page = NULL; |
| 36 | repeat: |
Jaegeuk Kim | bde4468 | 2014-04-30 09:18:53 +0900 | [diff] [blame] | 37 | page = grab_cache_page(mapping, index); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 38 | if (!page) { |
| 39 | cond_resched(); |
| 40 | goto repeat; |
| 41 | } |
Jaegeuk Kim | bde4468 | 2014-04-30 09:18:53 +0900 | [diff] [blame] | 42 | f2fs_wait_on_page_writeback(page, META); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 43 | SetPageUptodate(page); |
| 44 | return page; |
| 45 | } |
| 46 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 47 | /* |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 48 | * We guarantee no failure on the returned page. |
| 49 | */ |
| 50 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
| 51 | { |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 52 | struct address_space *mapping = META_MAPPING(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 53 | struct page *page; |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 54 | struct f2fs_io_info fio = { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 55 | .sbi = sbi, |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 56 | .type = META, |
| 57 | .rw = READ_SYNC | REQ_META | REQ_PRIO, |
| 58 | .blk_addr = index, |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 59 | .encrypted_page = NULL, |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 60 | }; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 61 | repeat: |
| 62 | page = grab_cache_page(mapping, index); |
| 63 | if (!page) { |
| 64 | cond_resched(); |
| 65 | goto repeat; |
| 66 | } |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 67 | if (PageUptodate(page)) |
| 68 | goto out; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 69 | |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 70 | fio.page = page; |
| 71 | |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 72 | if (f2fs_submit_page_bio(&fio)) { |
| 73 | f2fs_put_page(page, 1); |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 74 | goto repeat; |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 75 | } |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 76 | |
| 77 | lock_page(page); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 78 | if (unlikely(page->mapping != mapping)) { |
Jaegeuk Kim | afcb7ca0 | 2013-04-26 11:55:17 +0900 | [diff] [blame] | 79 | f2fs_put_page(page, 1); |
| 80 | goto repeat; |
| 81 | } |
Chao Yu | f3f338c | 2015-07-29 17:33:13 +0800 | [diff] [blame] | 82 | |
| 83 | /* |
| 84 | * if there is any IO error when accessing device, make our filesystem |
| 85 | * readonly and make sure do not write checkpoint with non-uptodate |
| 86 | * meta page. |
| 87 | */ |
| 88 | if (unlikely(!PageUptodate(page))) |
| 89 | f2fs_stop_checkpoint(sbi); |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 90 | out: |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 91 | return page; |
| 92 | } |
| 93 | |
Chao Yu | f0c9cad | 2015-04-18 18:05:36 +0800 | [diff] [blame] | 94 | bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type) |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 95 | { |
| 96 | switch (type) { |
| 97 | case META_NAT: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 98 | break; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 99 | case META_SIT: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 100 | if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
| 101 | return false; |
| 102 | break; |
Chao Yu | 81c1a0f1 | 2014-02-27 19:12:24 +0800 | [diff] [blame] | 103 | case META_SSA: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 104 | if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
| 105 | blkaddr < SM_I(sbi)->ssa_blkaddr)) |
| 106 | return false; |
| 107 | break; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 108 | case META_CP: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 109 | if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
| 110 | blkaddr < __start_cp_addr(sbi))) |
| 111 | return false; |
| 112 | break; |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 113 | case META_POR: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 114 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
| 115 | blkaddr < MAIN_BLKADDR(sbi))) |
| 116 | return false; |
| 117 | break; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 118 | default: |
| 119 | BUG(); |
| 120 | } |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 121 | |
| 122 | return true; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | /* |
Chao Yu | 81c1a0f1 | 2014-02-27 19:12:24 +0800 | [diff] [blame] | 126 | * Readahead CP/NAT/SIT/SSA pages |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 127 | */ |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 128 | int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type) |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 129 | { |
| 130 | block_t prev_blk_addr = 0; |
| 131 | struct page *page; |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 132 | block_t blkno = start; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 133 | struct f2fs_io_info fio = { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 134 | .sbi = sbi, |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 135 | .type = META, |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 136 | .rw = READ_SYNC | REQ_META | REQ_PRIO, |
| 137 | .encrypted_page = NULL, |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 138 | }; |
| 139 | |
| 140 | for (; nrpages-- > 0; blkno++) { |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 141 | |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 142 | if (!is_valid_blkaddr(sbi, blkno, type)) |
| 143 | goto out; |
| 144 | |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 145 | switch (type) { |
| 146 | case META_NAT: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 147 | if (unlikely(blkno >= |
| 148 | NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 149 | blkno = 0; |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 150 | /* get nat block addr */ |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 151 | fio.blk_addr = current_nat_addr(sbi, |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 152 | blkno * NAT_ENTRY_PER_BLOCK); |
| 153 | break; |
| 154 | case META_SIT: |
| 155 | /* get sit block addr */ |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 156 | fio.blk_addr = current_sit_addr(sbi, |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 157 | blkno * SIT_ENTRY_PER_BLOCK); |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 158 | if (blkno != start && prev_blk_addr + 1 != fio.blk_addr) |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 159 | goto out; |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 160 | prev_blk_addr = fio.blk_addr; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 161 | break; |
Chao Yu | 81c1a0f1 | 2014-02-27 19:12:24 +0800 | [diff] [blame] | 162 | case META_SSA: |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 163 | case META_CP: |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 164 | case META_POR: |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 165 | fio.blk_addr = blkno; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 166 | break; |
| 167 | default: |
| 168 | BUG(); |
| 169 | } |
| 170 | |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 171 | page = grab_cache_page(META_MAPPING(sbi), fio.blk_addr); |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 172 | if (!page) |
| 173 | continue; |
| 174 | if (PageUptodate(page)) { |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 175 | f2fs_put_page(page, 1); |
| 176 | continue; |
| 177 | } |
| 178 | |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 179 | fio.page = page; |
| 180 | f2fs_submit_page_mbio(&fio); |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 181 | f2fs_put_page(page, 0); |
| 182 | } |
| 183 | out: |
| 184 | f2fs_submit_merged_bio(sbi, META, READ); |
| 185 | return blkno - start; |
| 186 | } |
| 187 | |
Chao Yu | 635aee1 | 2014-12-08 15:02:52 +0800 | [diff] [blame] | 188 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
| 189 | { |
| 190 | struct page *page; |
| 191 | bool readahead = false; |
| 192 | |
| 193 | page = find_get_page(META_MAPPING(sbi), index); |
| 194 | if (!page || (page && !PageUptodate(page))) |
| 195 | readahead = true; |
| 196 | f2fs_put_page(page, 0); |
| 197 | |
| 198 | if (readahead) |
| 199 | ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR); |
| 200 | } |
| 201 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 202 | static int f2fs_write_meta_page(struct page *page, |
| 203 | struct writeback_control *wbc) |
| 204 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 205 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 206 | |
Chao Yu | ecda0de | 2014-05-06 16:48:26 +0800 | [diff] [blame] | 207 | trace_f2fs_writepage(page, META); |
| 208 | |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 209 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 210 | goto redirty_out; |
Jaegeuk Kim | 857dc4e | 2014-11-19 11:03:34 -0800 | [diff] [blame] | 211 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 212 | goto redirty_out; |
Jaegeuk Kim | 1e968fd | 2014-08-11 16:49:25 -0700 | [diff] [blame] | 213 | if (unlikely(f2fs_cp_error(sbi))) |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 214 | goto redirty_out; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 215 | |
Jaegeuk Kim | 3cb5ad1 | 2014-03-18 13:29:07 +0900 | [diff] [blame] | 216 | f2fs_wait_on_page_writeback(page, META); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 217 | write_meta_page(sbi, page); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 218 | dec_page_count(sbi, F2FS_DIRTY_META); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 219 | unlock_page(page); |
Jaegeuk Kim | 857dc4e | 2014-11-19 11:03:34 -0800 | [diff] [blame] | 220 | |
| 221 | if (wbc->for_reclaim) |
| 222 | f2fs_submit_merged_bio(sbi, META, WRITE); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 223 | return 0; |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 224 | |
| 225 | redirty_out: |
Jaegeuk Kim | 76f6026 | 2014-04-15 16:04:15 +0900 | [diff] [blame] | 226 | redirty_page_for_writepage(wbc, page); |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 227 | return AOP_WRITEPAGE_ACTIVATE; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | static int f2fs_write_meta_pages(struct address_space *mapping, |
| 231 | struct writeback_control *wbc) |
| 232 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 233 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 234 | long diff, written; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 235 | |
Chao Yu | e574843 | 2014-05-06 16:51:24 +0800 | [diff] [blame] | 236 | trace_f2fs_writepages(mapping->host, wbc, META); |
| 237 | |
Jaegeuk Kim | 5459aa9 | 2013-12-17 17:28:41 +0900 | [diff] [blame] | 238 | /* collect a number of dirty meta pages and write together */ |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 239 | if (wbc->for_kupdate || |
| 240 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 241 | goto skip_write; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 242 | |
| 243 | /* if mounting is failed, skip writing node pages */ |
| 244 | mutex_lock(&sbi->cp_mutex); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 245 | diff = nr_pages_to_write(sbi, META, wbc); |
| 246 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 247 | mutex_unlock(&sbi->cp_mutex); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 248 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 249 | return 0; |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 250 | |
| 251 | skip_write: |
| 252 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); |
| 253 | return 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, |
| 257 | long nr_to_write) |
| 258 | { |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 259 | struct address_space *mapping = META_MAPPING(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 260 | pgoff_t index = 0, end = LONG_MAX; |
| 261 | struct pagevec pvec; |
| 262 | long nwritten = 0; |
| 263 | struct writeback_control wbc = { |
| 264 | .for_reclaim = 0, |
| 265 | }; |
| 266 | |
| 267 | pagevec_init(&pvec, 0); |
| 268 | |
| 269 | while (index <= end) { |
| 270 | int i, nr_pages; |
| 271 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, |
| 272 | PAGECACHE_TAG_DIRTY, |
| 273 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 274 | if (unlikely(nr_pages == 0)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 275 | break; |
| 276 | |
| 277 | for (i = 0; i < nr_pages; i++) { |
| 278 | struct page *page = pvec.pages[i]; |
Jaegeuk Kim | 203681f | 2014-02-05 13:03:57 +0900 | [diff] [blame] | 279 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 280 | lock_page(page); |
Jaegeuk Kim | 203681f | 2014-02-05 13:03:57 +0900 | [diff] [blame] | 281 | |
| 282 | if (unlikely(page->mapping != mapping)) { |
| 283 | continue_unlock: |
| 284 | unlock_page(page); |
| 285 | continue; |
| 286 | } |
| 287 | if (!PageDirty(page)) { |
| 288 | /* someone wrote it for us */ |
| 289 | goto continue_unlock; |
| 290 | } |
| 291 | |
| 292 | if (!clear_page_dirty_for_io(page)) |
| 293 | goto continue_unlock; |
| 294 | |
Chao Yu | 97dc3fd | 2015-02-16 16:19:22 +0800 | [diff] [blame] | 295 | if (mapping->a_ops->writepage(page, &wbc)) { |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 296 | unlock_page(page); |
| 297 | break; |
| 298 | } |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 299 | nwritten++; |
| 300 | if (unlikely(nwritten >= nr_to_write)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 301 | break; |
| 302 | } |
| 303 | pagevec_release(&pvec); |
| 304 | cond_resched(); |
| 305 | } |
| 306 | |
| 307 | if (nwritten) |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 308 | f2fs_submit_merged_bio(sbi, type, WRITE); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 309 | |
| 310 | return nwritten; |
| 311 | } |
| 312 | |
| 313 | static int f2fs_set_meta_page_dirty(struct page *page) |
| 314 | { |
Jaegeuk Kim | 26c6b88 | 2013-10-24 17:53:29 +0900 | [diff] [blame] | 315 | trace_f2fs_set_page_dirty(page, META); |
| 316 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 317 | SetPageUptodate(page); |
| 318 | if (!PageDirty(page)) { |
| 319 | __set_page_dirty_nobuffers(page); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 320 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
Chao Yu | 1601839 | 2015-01-19 20:24:37 +0800 | [diff] [blame] | 321 | SetPagePrivate(page); |
Jaegeuk Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 322 | f2fs_trace_pid(page); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 323 | return 1; |
| 324 | } |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | const struct address_space_operations f2fs_meta_aops = { |
| 329 | .writepage = f2fs_write_meta_page, |
| 330 | .writepages = f2fs_write_meta_pages, |
| 331 | .set_page_dirty = f2fs_set_meta_page_dirty, |
Chao Yu | 487261f | 2015-02-05 17:44:29 +0800 | [diff] [blame] | 332 | .invalidatepage = f2fs_invalidate_page, |
| 333 | .releasepage = f2fs_release_page, |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 334 | }; |
| 335 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 336 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 337 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 338 | struct inode_management *im = &sbi->im[type]; |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 339 | struct ino_entry *e; |
| 340 | retry: |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 341 | if (radix_tree_preload(GFP_NOFS)) { |
| 342 | cond_resched(); |
| 343 | goto retry; |
| 344 | } |
| 345 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 346 | spin_lock(&im->ino_lock); |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 347 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 348 | e = radix_tree_lookup(&im->ino_root, ino); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 349 | if (!e) { |
| 350 | e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); |
| 351 | if (!e) { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 352 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 353 | radix_tree_preload_end(); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 354 | goto retry; |
| 355 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 356 | if (radix_tree_insert(&im->ino_root, ino, e)) { |
| 357 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 358 | kmem_cache_free(ino_entry_slab, e); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 359 | radix_tree_preload_end(); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 360 | goto retry; |
| 361 | } |
| 362 | memset(e, 0, sizeof(struct ino_entry)); |
| 363 | e->ino = ino; |
| 364 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 365 | list_add_tail(&e->list, &im->ino_list); |
Jaegeuk Kim | 8c40294 | 2014-11-06 15:16:04 -0800 | [diff] [blame] | 366 | if (type != ORPHAN_INO) |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 367 | im->ino_num++; |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 368 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 369 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 370 | radix_tree_preload_end(); |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 371 | } |
| 372 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 373 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 374 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 375 | struct inode_management *im = &sbi->im[type]; |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 376 | struct ino_entry *e; |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 377 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 378 | spin_lock(&im->ino_lock); |
| 379 | e = radix_tree_lookup(&im->ino_root, ino); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 380 | if (e) { |
| 381 | list_del(&e->list); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 382 | radix_tree_delete(&im->ino_root, ino); |
| 383 | im->ino_num--; |
| 384 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 385 | kmem_cache_free(ino_entry_slab, e); |
| 386 | return; |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 387 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 388 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 389 | } |
| 390 | |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 391 | void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
| 392 | { |
| 393 | /* add new dirty ino entry into list */ |
| 394 | __add_ino_entry(sbi, ino, type); |
| 395 | } |
| 396 | |
| 397 | void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
| 398 | { |
| 399 | /* remove dirty ino entry from list */ |
| 400 | __remove_ino_entry(sbi, ino, type); |
| 401 | } |
| 402 | |
| 403 | /* mode should be APPEND_INO or UPDATE_INO */ |
| 404 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) |
| 405 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 406 | struct inode_management *im = &sbi->im[mode]; |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 407 | struct ino_entry *e; |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 408 | |
| 409 | spin_lock(&im->ino_lock); |
| 410 | e = radix_tree_lookup(&im->ino_root, ino); |
| 411 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 412 | return e ? true : false; |
| 413 | } |
| 414 | |
Jaegeuk Kim | 6f12ac2 | 2014-08-19 09:48:22 -0700 | [diff] [blame] | 415 | void release_dirty_inode(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 416 | { |
| 417 | struct ino_entry *e, *tmp; |
| 418 | int i; |
| 419 | |
| 420 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 421 | struct inode_management *im = &sbi->im[i]; |
| 422 | |
| 423 | spin_lock(&im->ino_lock); |
| 424 | list_for_each_entry_safe(e, tmp, &im->ino_list, list) { |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 425 | list_del(&e->list); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 426 | radix_tree_delete(&im->ino_root, e->ino); |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 427 | kmem_cache_free(ino_entry_slab, e); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 428 | im->ino_num--; |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 429 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 430 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 431 | } |
| 432 | } |
| 433 | |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 434 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 435 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 436 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 437 | int err = 0; |
| 438 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 439 | spin_lock(&im->ino_lock); |
| 440 | if (unlikely(im->ino_num >= sbi->max_orphans)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 441 | err = -ENOSPC; |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 442 | else |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 443 | im->ino_num++; |
| 444 | spin_unlock(&im->ino_lock); |
Gu Zheng | 0d47c1a | 2013-12-26 18:24:19 +0800 | [diff] [blame] | 445 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 446 | return err; |
| 447 | } |
| 448 | |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 449 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
| 450 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 451 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
| 452 | |
| 453 | spin_lock(&im->ino_lock); |
| 454 | f2fs_bug_on(sbi, im->ino_num == 0); |
| 455 | im->ino_num--; |
| 456 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 457 | } |
| 458 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 459 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
| 460 | { |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 461 | /* add new orphan ino entry into list */ |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 462 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
| 466 | { |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 467 | /* remove orphan entry from orphan list */ |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 468 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
| 472 | { |
| 473 | struct inode *inode = f2fs_iget(sbi->sb, ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 474 | f2fs_bug_on(sbi, IS_ERR(inode)); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 475 | clear_nlink(inode); |
| 476 | |
| 477 | /* truncate all the data during iput */ |
| 478 | iput(inode); |
| 479 | } |
| 480 | |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 481 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 482 | { |
Wanpeng Li | 3c64298 | 2015-02-26 07:57:21 +0800 | [diff] [blame] | 483 | block_t start_blk, orphan_blocks, i, j; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 484 | |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 485 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 486 | return; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 487 | |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 488 | set_sbi_flag(sbi, SBI_POR_DOING); |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 489 | |
Wanpeng Li | 5514148 | 2015-02-26 07:57:20 +0800 | [diff] [blame] | 490 | start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); |
Wanpeng Li | 3c64298 | 2015-02-26 07:57:21 +0800 | [diff] [blame] | 491 | orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 492 | |
Wanpeng Li | 3c64298 | 2015-02-26 07:57:21 +0800 | [diff] [blame] | 493 | ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP); |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 494 | |
Wanpeng Li | 3c64298 | 2015-02-26 07:57:21 +0800 | [diff] [blame] | 495 | for (i = 0; i < orphan_blocks; i++) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 496 | struct page *page = get_meta_page(sbi, start_blk + i); |
| 497 | struct f2fs_orphan_block *orphan_blk; |
| 498 | |
| 499 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); |
| 500 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { |
| 501 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); |
| 502 | recover_orphan_inode(sbi, ino); |
| 503 | } |
| 504 | f2fs_put_page(page, 1); |
| 505 | } |
| 506 | /* clear Orphan Flag */ |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 507 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 508 | clear_sbi_flag(sbi, SBI_POR_DOING); |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 509 | return; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) |
| 513 | { |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 514 | struct list_head *head; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 515 | struct f2fs_orphan_block *orphan_blk = NULL; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 516 | unsigned int nentries = 0; |
Chao Yu | bd936f8 | 2015-07-13 17:44:25 +0800 | [diff] [blame] | 517 | unsigned short index = 1; |
Jaegeuk Kim | 8c40294 | 2014-11-06 15:16:04 -0800 | [diff] [blame] | 518 | unsigned short orphan_blocks; |
Gu Zheng | 4531929 | 2014-01-10 18:09:02 +0800 | [diff] [blame] | 519 | struct page *page = NULL; |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 520 | struct ino_entry *orphan = NULL; |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 521 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 522 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 523 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
Jaegeuk Kim | 8c40294 | 2014-11-06 15:16:04 -0800 | [diff] [blame] | 524 | |
Jaegeuk Kim | d6c67a4 | 2015-05-01 11:08:59 -0700 | [diff] [blame] | 525 | /* |
| 526 | * we don't need to do spin_lock(&im->ino_lock) here, since all the |
| 527 | * orphan inode operations are covered under f2fs_lock_op(). |
| 528 | * And, spin_lock should be avoided due to page operations below. |
| 529 | */ |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 530 | head = &im->ino_list; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 531 | |
| 532 | /* loop for each orphan inode entry and write them in Jornal block */ |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 533 | list_for_each_entry(orphan, head, list) { |
| 534 | if (!page) { |
Chao Yu | bd936f8 | 2015-07-13 17:44:25 +0800 | [diff] [blame] | 535 | page = grab_meta_page(sbi, start_blk++); |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 536 | orphan_blk = |
| 537 | (struct f2fs_orphan_block *)page_address(page); |
| 538 | memset(orphan_blk, 0, sizeof(*orphan_blk)); |
| 539 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 540 | |
Gu Zheng | 3679556 | 2013-11-26 16:44:16 +0800 | [diff] [blame] | 541 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 542 | |
Gu Zheng | 3679556 | 2013-11-26 16:44:16 +0800 | [diff] [blame] | 543 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 544 | /* |
| 545 | * an orphan block is full of 1020 entries, |
| 546 | * then we need to flush current orphan blocks |
| 547 | * and bring another one in memory |
| 548 | */ |
| 549 | orphan_blk->blk_addr = cpu_to_le16(index); |
| 550 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); |
| 551 | orphan_blk->entry_count = cpu_to_le32(nentries); |
| 552 | set_page_dirty(page); |
| 553 | f2fs_put_page(page, 1); |
| 554 | index++; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 555 | nentries = 0; |
| 556 | page = NULL; |
| 557 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 558 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 559 | |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 560 | if (page) { |
| 561 | orphan_blk->blk_addr = cpu_to_le16(index); |
| 562 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); |
| 563 | orphan_blk->entry_count = cpu_to_le32(nentries); |
| 564 | set_page_dirty(page); |
| 565 | f2fs_put_page(page, 1); |
| 566 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, |
| 570 | block_t cp_addr, unsigned long long *version) |
| 571 | { |
| 572 | struct page *cp_page_1, *cp_page_2 = NULL; |
| 573 | unsigned long blk_size = sbi->blocksize; |
| 574 | struct f2fs_checkpoint *cp_block; |
| 575 | unsigned long long cur_version = 0, pre_version = 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 576 | size_t crc_offset; |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 577 | __u32 crc = 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 578 | |
| 579 | /* Read the 1st cp block in this CP pack */ |
| 580 | cp_page_1 = get_meta_page(sbi, cp_addr); |
| 581 | |
| 582 | /* get the version number */ |
| 583 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); |
| 584 | crc_offset = le32_to_cpu(cp_block->checksum_offset); |
| 585 | if (crc_offset >= blk_size) |
| 586 | goto invalid_cp1; |
| 587 | |
Jaegeuk Kim | 29e7043 | 2015-02-10 16:23:12 -0800 | [diff] [blame] | 588 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 589 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
| 590 | goto invalid_cp1; |
| 591 | |
Jaegeuk Kim | d71b556 | 2013-08-09 15:03:21 +0900 | [diff] [blame] | 592 | pre_version = cur_cp_version(cp_block); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 593 | |
| 594 | /* Read the 2nd cp block in this CP pack */ |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 595 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 596 | cp_page_2 = get_meta_page(sbi, cp_addr); |
| 597 | |
| 598 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); |
| 599 | crc_offset = le32_to_cpu(cp_block->checksum_offset); |
| 600 | if (crc_offset >= blk_size) |
| 601 | goto invalid_cp2; |
| 602 | |
Jaegeuk Kim | 29e7043 | 2015-02-10 16:23:12 -0800 | [diff] [blame] | 603 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 604 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
| 605 | goto invalid_cp2; |
| 606 | |
Jaegeuk Kim | d71b556 | 2013-08-09 15:03:21 +0900 | [diff] [blame] | 607 | cur_version = cur_cp_version(cp_block); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 608 | |
| 609 | if (cur_version == pre_version) { |
| 610 | *version = cur_version; |
| 611 | f2fs_put_page(cp_page_2, 1); |
| 612 | return cp_page_1; |
| 613 | } |
| 614 | invalid_cp2: |
| 615 | f2fs_put_page(cp_page_2, 1); |
| 616 | invalid_cp1: |
| 617 | f2fs_put_page(cp_page_1, 1); |
| 618 | return NULL; |
| 619 | } |
| 620 | |
| 621 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) |
| 622 | { |
| 623 | struct f2fs_checkpoint *cp_block; |
| 624 | struct f2fs_super_block *fsb = sbi->raw_super; |
| 625 | struct page *cp1, *cp2, *cur_page; |
| 626 | unsigned long blk_size = sbi->blocksize; |
| 627 | unsigned long long cp1_version = 0, cp2_version = 0; |
| 628 | unsigned long long cp_start_blk_no; |
Wanpeng Li | 5514148 | 2015-02-26 07:57:20 +0800 | [diff] [blame] | 629 | unsigned int cp_blks = 1 + __cp_payload(sbi); |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 630 | block_t cp_blk_no; |
| 631 | int i; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 632 | |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 633 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 634 | if (!sbi->ckpt) |
| 635 | return -ENOMEM; |
| 636 | /* |
| 637 | * Finding out valid cp block involves read both |
| 638 | * sets( cp pack1 and cp pack 2) |
| 639 | */ |
| 640 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); |
| 641 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); |
| 642 | |
| 643 | /* The second checkpoint pack should start at the next segment */ |
Jaegeuk Kim | f9a4e6d | 2013-11-28 12:44:05 +0900 | [diff] [blame] | 644 | cp_start_blk_no += ((unsigned long long)1) << |
| 645 | le32_to_cpu(fsb->log_blocks_per_seg); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 646 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
| 647 | |
| 648 | if (cp1 && cp2) { |
| 649 | if (ver_after(cp2_version, cp1_version)) |
| 650 | cur_page = cp2; |
| 651 | else |
| 652 | cur_page = cp1; |
| 653 | } else if (cp1) { |
| 654 | cur_page = cp1; |
| 655 | } else if (cp2) { |
| 656 | cur_page = cp2; |
| 657 | } else { |
| 658 | goto fail_no_cp; |
| 659 | } |
| 660 | |
| 661 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); |
| 662 | memcpy(sbi->ckpt, cp_block, blk_size); |
| 663 | |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 664 | if (cp_blks <= 1) |
| 665 | goto done; |
| 666 | |
| 667 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); |
| 668 | if (cur_page == cp2) |
| 669 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); |
| 670 | |
| 671 | for (i = 1; i < cp_blks; i++) { |
| 672 | void *sit_bitmap_ptr; |
| 673 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; |
| 674 | |
| 675 | cur_page = get_meta_page(sbi, cp_blk_no + i); |
| 676 | sit_bitmap_ptr = page_address(cur_page); |
| 677 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); |
| 678 | f2fs_put_page(cur_page, 1); |
| 679 | } |
| 680 | done: |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 681 | f2fs_put_page(cp1, 1); |
| 682 | f2fs_put_page(cp2, 1); |
| 683 | return 0; |
| 684 | |
| 685 | fail_no_cp: |
| 686 | kfree(sbi->ckpt); |
| 687 | return -EINVAL; |
| 688 | } |
| 689 | |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 690 | static int __add_dirty_inode(struct inode *inode, struct inode_entry *new) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 691 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 692 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 693 | |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 694 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
| 695 | return -EEXIST; |
Chao Yu | 2d7b822 | 2014-03-29 11:33:17 +0800 | [diff] [blame] | 696 | |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 697 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
| 698 | F2FS_I(inode)->dirty_dir = new; |
| 699 | list_add_tail(&new->list, &sbi->dir_inode_list); |
Jaegeuk Kim | dcdfff6 | 2013-10-22 20:56:10 +0900 | [diff] [blame] | 700 | stat_inc_dirty_dir(sbi); |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 701 | return 0; |
| 702 | } |
| 703 | |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 704 | void update_dirty_page(struct inode *inode, struct page *page) |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 705 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 706 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 707 | struct inode_entry *new; |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 708 | int ret = 0; |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 709 | |
Chao Yu | 5ac9f36 | 2015-06-29 18:14:10 +0800 | [diff] [blame] | 710 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
| 711 | !S_ISLNK(inode->i_mode)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 712 | return; |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 713 | |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 714 | if (!S_ISDIR(inode->i_mode)) { |
| 715 | inode_inc_dirty_pages(inode); |
| 716 | goto out; |
| 717 | } |
| 718 | |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 719 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 720 | new->inode = inode; |
| 721 | INIT_LIST_HEAD(&new->list); |
| 722 | |
| 723 | spin_lock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 724 | ret = __add_dirty_inode(inode, new); |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 725 | inode_inc_dirty_pages(inode); |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 726 | spin_unlock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 727 | |
| 728 | if (ret) |
| 729 | kmem_cache_free(inode_entry_slab, new); |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 730 | out: |
| 731 | SetPagePrivate(page); |
Jaegeuk Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 732 | f2fs_trace_pid(page); |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 733 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 734 | |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 735 | void add_dirty_dir_inode(struct inode *inode) |
| 736 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 737 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 738 | struct inode_entry *new = |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 739 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 740 | int ret = 0; |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 741 | |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 742 | new->inode = inode; |
| 743 | INIT_LIST_HEAD(&new->list); |
| 744 | |
| 745 | spin_lock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 746 | ret = __add_dirty_inode(inode, new); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 747 | spin_unlock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 748 | |
| 749 | if (ret) |
| 750 | kmem_cache_free(inode_entry_slab, new); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | void remove_dirty_dir_inode(struct inode *inode) |
| 754 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 755 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 756 | struct inode_entry *entry; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 757 | |
| 758 | if (!S_ISDIR(inode->i_mode)) |
| 759 | return; |
| 760 | |
| 761 | spin_lock(&sbi->dir_inode_lock); |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 762 | if (get_dirty_pages(inode) || |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 763 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { |
Jaegeuk Kim | 3b10b1f | 2013-05-27 10:32:01 +0900 | [diff] [blame] | 764 | spin_unlock(&sbi->dir_inode_lock); |
| 765 | return; |
| 766 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 767 | |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 768 | entry = F2FS_I(inode)->dirty_dir; |
| 769 | list_del(&entry->list); |
| 770 | F2FS_I(inode)->dirty_dir = NULL; |
| 771 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
| 772 | stat_dec_dirty_dir(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 773 | spin_unlock(&sbi->dir_inode_lock); |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 774 | kmem_cache_free(inode_entry_slab, entry); |
Jaegeuk Kim | 74d0b91 | 2013-05-15 16:40:02 +0900 | [diff] [blame] | 775 | |
| 776 | /* Only from the recovery routine */ |
Jaegeuk Kim | afc3eda | 2013-05-28 09:59:27 +0900 | [diff] [blame] | 777 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
| 778 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); |
Jaegeuk Kim | 74d0b91 | 2013-05-15 16:40:02 +0900 | [diff] [blame] | 779 | iput(inode); |
Jaegeuk Kim | afc3eda | 2013-05-28 09:59:27 +0900 | [diff] [blame] | 780 | } |
Jaegeuk Kim | 74d0b91 | 2013-05-15 16:40:02 +0900 | [diff] [blame] | 781 | } |
| 782 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 783 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
| 784 | { |
Gu Zheng | ce3b7d8 | 2013-11-19 18:03:47 +0800 | [diff] [blame] | 785 | struct list_head *head; |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 786 | struct inode_entry *entry; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 787 | struct inode *inode; |
| 788 | retry: |
Jaegeuk Kim | af41d3e | 2014-10-17 14:14:16 -0700 | [diff] [blame] | 789 | if (unlikely(f2fs_cp_error(sbi))) |
| 790 | return; |
| 791 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 792 | spin_lock(&sbi->dir_inode_lock); |
Gu Zheng | ce3b7d8 | 2013-11-19 18:03:47 +0800 | [diff] [blame] | 793 | |
| 794 | head = &sbi->dir_inode_list; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 795 | if (list_empty(head)) { |
| 796 | spin_unlock(&sbi->dir_inode_lock); |
| 797 | return; |
| 798 | } |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 799 | entry = list_entry(head->next, struct inode_entry, list); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 800 | inode = igrab(entry->inode); |
| 801 | spin_unlock(&sbi->dir_inode_lock); |
| 802 | if (inode) { |
Jaegeuk Kim | 87d6f89 | 2014-03-18 12:40:49 +0900 | [diff] [blame] | 803 | filemap_fdatawrite(inode->i_mapping); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 804 | iput(inode); |
| 805 | } else { |
| 806 | /* |
| 807 | * We should submit bio, since it exists several |
| 808 | * wribacking dentry pages in the freeing inode. |
| 809 | */ |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 810 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
Sebastian Andrzej Siewior | 7ecebe5 | 2015-02-27 13:13:14 +0100 | [diff] [blame] | 811 | cond_resched(); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 812 | } |
| 813 | goto retry; |
| 814 | } |
| 815 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 816 | /* |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 817 | * Freeze all the FS-operations for checkpoint. |
| 818 | */ |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 819 | static int block_operations(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 820 | { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 821 | struct writeback_control wbc = { |
| 822 | .sync_mode = WB_SYNC_ALL, |
| 823 | .nr_to_write = LONG_MAX, |
| 824 | .for_reclaim = 0, |
| 825 | }; |
Jaegeuk Kim | c718379b | 2013-04-24 13:19:56 +0900 | [diff] [blame] | 826 | struct blk_plug plug; |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 827 | int err = 0; |
Jaegeuk Kim | c718379b | 2013-04-24 13:19:56 +0900 | [diff] [blame] | 828 | |
| 829 | blk_start_plug(&plug); |
| 830 | |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 831 | retry_flush_dents: |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 832 | f2fs_lock_all(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 833 | /* write all the dirty dentry pages */ |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 834 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 835 | f2fs_unlock_all(sbi); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 836 | sync_dirty_dir_inodes(sbi); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 837 | if (unlikely(f2fs_cp_error(sbi))) { |
| 838 | err = -EIO; |
| 839 | goto out; |
| 840 | } |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 841 | goto retry_flush_dents; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 842 | } |
| 843 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 844 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 845 | * POR: we should ensure that there are no dirty node pages |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 846 | * until finishing nat/sit flush. |
| 847 | */ |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 848 | retry_flush_nodes: |
Chao Yu | b3582c6 | 2014-07-03 18:58:39 +0800 | [diff] [blame] | 849 | down_write(&sbi->node_write); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 850 | |
| 851 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { |
Chao Yu | b3582c6 | 2014-07-03 18:58:39 +0800 | [diff] [blame] | 852 | up_write(&sbi->node_write); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 853 | sync_node_pages(sbi, 0, &wbc); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 854 | if (unlikely(f2fs_cp_error(sbi))) { |
| 855 | f2fs_unlock_all(sbi); |
| 856 | err = -EIO; |
| 857 | goto out; |
| 858 | } |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 859 | goto retry_flush_nodes; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 860 | } |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 861 | out: |
Jaegeuk Kim | c718379b | 2013-04-24 13:19:56 +0900 | [diff] [blame] | 862 | blk_finish_plug(&plug); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 863 | return err; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 864 | } |
| 865 | |
| 866 | static void unblock_operations(struct f2fs_sb_info *sbi) |
| 867 | { |
Chao Yu | b3582c6 | 2014-07-03 18:58:39 +0800 | [diff] [blame] | 868 | up_write(&sbi->node_write); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 869 | f2fs_unlock_all(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 870 | } |
| 871 | |
Changman Lee | fb51b5e | 2013-11-07 12:48:25 +0900 | [diff] [blame] | 872 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
| 873 | { |
| 874 | DEFINE_WAIT(wait); |
| 875 | |
| 876 | for (;;) { |
| 877 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); |
| 878 | |
| 879 | if (!get_pages(sbi, F2FS_WRITEBACK)) |
| 880 | break; |
| 881 | |
| 882 | io_schedule(); |
| 883 | } |
| 884 | finish_wait(&sbi->cp_wait, &wait); |
| 885 | } |
| 886 | |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 887 | static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 888 | { |
| 889 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
Jaegeuk Kim | cf2271e | 2014-07-25 15:47:25 -0700 | [diff] [blame] | 890 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
Huang Ying | 7704182 | 2014-09-12 20:19:48 +0800 | [diff] [blame] | 891 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 892 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
Huang Ying | 7704182 | 2014-09-12 20:19:48 +0800 | [diff] [blame] | 893 | nid_t last_nid = nm_i->next_scan_nid; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 894 | block_t start_blk; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 895 | unsigned int data_sum_blocks, orphan_blocks; |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 896 | __u32 crc32 = 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 897 | int i; |
Wanpeng Li | 5514148 | 2015-02-26 07:57:20 +0800 | [diff] [blame] | 898 | int cp_payload_blks = __cp_payload(sbi); |
Chao Yu | e90c2d2 | 2015-07-28 18:36:47 +0800 | [diff] [blame^] | 899 | block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg); |
| 900 | bool invalidate = false; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 901 | |
Jaegeuk Kim | 1e87a78 | 2014-04-15 13:57:55 +0900 | [diff] [blame] | 902 | /* |
| 903 | * This avoids to conduct wrong roll-forward operations and uses |
| 904 | * metapages, so should be called prior to sync_meta_pages below. |
| 905 | */ |
Chao Yu | e90c2d2 | 2015-07-28 18:36:47 +0800 | [diff] [blame^] | 906 | if (discard_next_dnode(sbi, discard_blk)) |
| 907 | invalidate = true; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 908 | |
| 909 | /* Flush all the NAT/SIT pages */ |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 910 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 911 | sync_meta_pages(sbi, META, LONG_MAX); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 912 | if (unlikely(f2fs_cp_error(sbi))) |
| 913 | return; |
| 914 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 915 | |
| 916 | next_free_nid(sbi, &last_nid); |
| 917 | |
| 918 | /* |
| 919 | * modify checkpoint |
| 920 | * version number is already updated |
| 921 | */ |
| 922 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); |
| 923 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); |
| 924 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 925 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 926 | ckpt->cur_node_segno[i] = |
| 927 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); |
| 928 | ckpt->cur_node_blkoff[i] = |
| 929 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); |
| 930 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = |
| 931 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); |
| 932 | } |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 933 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 934 | ckpt->cur_data_segno[i] = |
| 935 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); |
| 936 | ckpt->cur_data_blkoff[i] = |
| 937 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); |
| 938 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = |
| 939 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); |
| 940 | } |
| 941 | |
| 942 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); |
| 943 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); |
| 944 | ckpt->next_free_nid = cpu_to_le32(last_nid); |
| 945 | |
| 946 | /* 2 cp + n data seg summary + orphan inode blocks */ |
Chao Yu | 3fa06d7 | 2014-12-09 14:21:46 +0800 | [diff] [blame] | 947 | data_sum_blocks = npages_for_summary_flush(sbi, false); |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 948 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 949 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 950 | else |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 951 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 952 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 953 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 954 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
| 955 | orphan_blocks); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 956 | |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 957 | if (__remain_node_summaries(cpc->reason)) |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 958 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 959 | cp_payload_blks + data_sum_blocks + |
| 960 | orphan_blocks + NR_CURSEG_NODE_TYPE); |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 961 | else |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 962 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 963 | cp_payload_blks + data_sum_blocks + |
| 964 | orphan_blocks); |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 965 | |
| 966 | if (cpc->reason == CP_UMOUNT) |
| 967 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
| 968 | else |
| 969 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
| 970 | |
| 971 | if (cpc->reason == CP_FASTBOOT) |
| 972 | set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); |
| 973 | else |
| 974 | clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 975 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 976 | if (orphan_num) |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 977 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 978 | else |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 979 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 980 | |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 981 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
Jaegeuk Kim | 2ae4c67 | 2014-09-02 15:43:52 -0700 | [diff] [blame] | 982 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); |
| 983 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 984 | /* update SIT/NAT bitmap */ |
| 985 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); |
| 986 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); |
| 987 | |
| 988 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 989 | *((__le32 *)((unsigned char *)ckpt + |
| 990 | le32_to_cpu(ckpt->checksum_offset))) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 991 | = cpu_to_le32(crc32); |
| 992 | |
| 993 | start_blk = __start_cp_addr(sbi); |
| 994 | |
| 995 | /* write out checkpoint buffer at block 0 */ |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 996 | update_meta_page(sbi, ckpt, start_blk++); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 997 | |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 998 | for (i = 1; i < 1 + cp_payload_blks; i++) |
| 999 | update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, |
| 1000 | start_blk++); |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 1001 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 1002 | if (orphan_num) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1003 | write_orphan_inodes(sbi, start_blk); |
| 1004 | start_blk += orphan_blocks; |
| 1005 | } |
| 1006 | |
| 1007 | write_data_summaries(sbi, start_blk); |
| 1008 | start_blk += data_sum_blocks; |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 1009 | if (__remain_node_summaries(cpc->reason)) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1010 | write_node_summaries(sbi, start_blk); |
| 1011 | start_blk += NR_CURSEG_NODE_TYPE; |
| 1012 | } |
| 1013 | |
| 1014 | /* writeout checkpoint block */ |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 1015 | update_meta_page(sbi, ckpt, start_blk); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1016 | |
| 1017 | /* wait for previous submitted node/meta pages writeback */ |
Changman Lee | fb51b5e | 2013-11-07 12:48:25 +0900 | [diff] [blame] | 1018 | wait_on_all_pages_writeback(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1019 | |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1020 | if (unlikely(f2fs_cp_error(sbi))) |
| 1021 | return; |
| 1022 | |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1023 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 1024 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1025 | |
| 1026 | /* update user_block_counts */ |
| 1027 | sbi->last_valid_block_count = sbi->total_valid_block_count; |
| 1028 | sbi->alloc_valid_block_count = 0; |
| 1029 | |
| 1030 | /* Here, we only have one bio having CP pack */ |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 1031 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1032 | |
Jaegeuk Kim | 6a8f8ca | 2014-10-29 14:37:22 -0700 | [diff] [blame] | 1033 | /* wait for previous submitted meta pages writeback */ |
| 1034 | wait_on_all_pages_writeback(sbi); |
| 1035 | |
Chao Yu | e90c2d2 | 2015-07-28 18:36:47 +0800 | [diff] [blame^] | 1036 | /* |
| 1037 | * invalidate meta page which is used temporarily for zeroing out |
| 1038 | * block at the end of warm node chain. |
| 1039 | */ |
| 1040 | if (invalidate) |
| 1041 | invalidate_mapping_pages(META_MAPPING(sbi), discard_blk, |
| 1042 | discard_blk); |
| 1043 | |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1044 | release_dirty_inode(sbi); |
| 1045 | |
| 1046 | if (unlikely(f2fs_cp_error(sbi))) |
| 1047 | return; |
| 1048 | |
Jaegeuk Kim | 836b5a6 | 2015-04-30 22:50:06 -0700 | [diff] [blame] | 1049 | clear_prefree_segments(sbi, cpc); |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 1050 | clear_sbi_flag(sbi, SBI_IS_DIRTY); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1051 | } |
| 1052 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1053 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 1054 | * We guarantee that this checkpoint procedure will not fail. |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1055 | */ |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1056 | void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1057 | { |
| 1058 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1059 | unsigned long long ckpt_ver; |
| 1060 | |
Jaegeuk Kim | 4372752 | 2013-02-04 15:11:17 +0900 | [diff] [blame] | 1061 | mutex_lock(&sbi->cp_mutex); |
Jaegeuk Kim | 8501017 | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1062 | |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 1063 | if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 1064 | (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC || |
| 1065 | (cpc->reason == CP_DISCARD && !sbi->discard_blks))) |
Jaegeuk Kim | 8501017 | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1066 | goto out; |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1067 | if (unlikely(f2fs_cp_error(sbi))) |
| 1068 | goto out; |
Jaegeuk Kim | 11504a8 | 2015-01-23 18:43:45 -0800 | [diff] [blame] | 1069 | if (f2fs_readonly(sbi->sb)) |
| 1070 | goto out; |
Wanpeng Li | 2bda542 | 2015-02-27 15:56:16 +0800 | [diff] [blame] | 1071 | |
| 1072 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); |
| 1073 | |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1074 | if (block_operations(sbi)) |
| 1075 | goto out; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1076 | |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1077 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
Namjae Jeon | 2af4bd6 | 2013-04-23 18:26:54 +0900 | [diff] [blame] | 1078 | |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 1079 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
| 1080 | f2fs_submit_merged_bio(sbi, NODE, WRITE); |
| 1081 | f2fs_submit_merged_bio(sbi, META, WRITE); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1082 | |
| 1083 | /* |
| 1084 | * update checkpoint pack index |
| 1085 | * Increase the version number so that |
| 1086 | * SIT entries and seg summaries are written at correct place |
| 1087 | */ |
Jaegeuk Kim | d71b556 | 2013-08-09 15:03:21 +0900 | [diff] [blame] | 1088 | ckpt_ver = cur_cp_version(ckpt); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1089 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
| 1090 | |
| 1091 | /* write cached NAT/SIT entries to NAT/SIT area */ |
| 1092 | flush_nat_entries(sbi); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1093 | flush_sit_entries(sbi, cpc); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1094 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1095 | /* unlock all the fs_lock[] in do_checkpoint() */ |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1096 | do_checkpoint(sbi, cpc); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1097 | |
| 1098 | unblock_operations(sbi); |
Changman Lee | 942e0be | 2014-02-13 15:12:29 +0900 | [diff] [blame] | 1099 | stat_inc_cp_count(sbi->stat_info); |
Jaegeuk Kim | 1002755 | 2015-04-09 17:03:53 -0700 | [diff] [blame] | 1100 | |
| 1101 | if (cpc->reason == CP_RECOVERY) |
| 1102 | f2fs_msg(sbi->sb, KERN_NOTICE, |
| 1103 | "checkpoint: version = %llx", ckpt_ver); |
Jaegeuk Kim | 8501017 | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1104 | out: |
| 1105 | mutex_unlock(&sbi->cp_mutex); |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1106 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1107 | } |
| 1108 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1109 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1110 | { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1111 | int i; |
| 1112 | |
| 1113 | for (i = 0; i < MAX_INO_ENTRY; i++) { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 1114 | struct inode_management *im = &sbi->im[i]; |
| 1115 | |
| 1116 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); |
| 1117 | spin_lock_init(&im->ino_lock); |
| 1118 | INIT_LIST_HEAD(&im->ino_list); |
| 1119 | im->ino_num = 0; |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1120 | } |
| 1121 | |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 1122 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
Wanpeng Li | 14b4281 | 2015-02-27 17:38:13 +0800 | [diff] [blame] | 1123 | NR_CURSEG_TYPE - __cp_payload(sbi)) * |
| 1124 | F2FS_ORPHANS_PER_BLOCK; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1125 | } |
| 1126 | |
Namjae Jeon | 6e6093a | 2013-01-17 00:08:30 +0900 | [diff] [blame] | 1127 | int __init create_checkpoint_caches(void) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1128 | { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1129 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
| 1130 | sizeof(struct ino_entry)); |
| 1131 | if (!ino_entry_slab) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1132 | return -ENOMEM; |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 1133 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", |
| 1134 | sizeof(struct inode_entry)); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 1135 | if (!inode_entry_slab) { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1136 | kmem_cache_destroy(ino_entry_slab); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1137 | return -ENOMEM; |
| 1138 | } |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
| 1142 | void destroy_checkpoint_caches(void) |
| 1143 | { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1144 | kmem_cache_destroy(ino_entry_slab); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1145 | kmem_cache_destroy(inode_entry_slab); |
| 1146 | } |