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" |
Namjae Jeon | 2af4bd6 | 2013-04-23 18:26:54 +0900 | [diff] [blame] | 23 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 24 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 25 | static struct kmem_cache *ino_entry_slab; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 26 | static struct kmem_cache *inode_entry_slab; |
| 27 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 28 | /* |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 29 | * We guarantee no failure on the returned page. |
| 30 | */ |
| 31 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
| 32 | { |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 33 | struct address_space *mapping = META_MAPPING(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 34 | struct page *page = NULL; |
| 35 | repeat: |
Jaegeuk Kim | bde4468 | 2014-04-30 09:18:53 +0900 | [diff] [blame] | 36 | page = grab_cache_page(mapping, index); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 37 | if (!page) { |
| 38 | cond_resched(); |
| 39 | goto repeat; |
| 40 | } |
Jaegeuk Kim | bde4468 | 2014-04-30 09:18:53 +0900 | [diff] [blame] | 41 | f2fs_wait_on_page_writeback(page, META); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 42 | SetPageUptodate(page); |
| 43 | return page; |
| 44 | } |
| 45 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 46 | /* |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 47 | * We guarantee no failure on the returned page. |
| 48 | */ |
| 49 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
| 50 | { |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 51 | struct address_space *mapping = META_MAPPING(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 52 | struct page *page; |
| 53 | repeat: |
| 54 | page = grab_cache_page(mapping, index); |
| 55 | if (!page) { |
| 56 | cond_resched(); |
| 57 | goto repeat; |
| 58 | } |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 59 | if (PageUptodate(page)) |
| 60 | goto out; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 61 | |
Jaegeuk Kim | 93dfe2a | 2013-11-30 12:51:14 +0900 | [diff] [blame] | 62 | if (f2fs_submit_page_bio(sbi, page, index, |
| 63 | READ_SYNC | REQ_META | REQ_PRIO)) |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 64 | goto repeat; |
| 65 | |
| 66 | lock_page(page); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 67 | if (unlikely(page->mapping != mapping)) { |
Jaegeuk Kim | afcb7ca0 | 2013-04-26 11:55:17 +0900 | [diff] [blame] | 68 | f2fs_put_page(page, 1); |
| 69 | goto repeat; |
| 70 | } |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 71 | out: |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 72 | return page; |
| 73 | } |
| 74 | |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 75 | static inline bool is_valid_blkaddr(struct f2fs_sb_info *sbi, |
| 76 | block_t blkaddr, int type) |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 77 | { |
| 78 | switch (type) { |
| 79 | case META_NAT: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 80 | break; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 81 | case META_SIT: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 82 | if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
| 83 | return false; |
| 84 | break; |
Chao Yu | 81c1a0f1 | 2014-02-27 19:12:24 +0800 | [diff] [blame] | 85 | case META_SSA: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 86 | if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
| 87 | blkaddr < SM_I(sbi)->ssa_blkaddr)) |
| 88 | return false; |
| 89 | break; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 90 | case META_CP: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 91 | if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
| 92 | blkaddr < __start_cp_addr(sbi))) |
| 93 | return false; |
| 94 | break; |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 95 | case META_POR: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 96 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
| 97 | blkaddr < MAIN_BLKADDR(sbi))) |
| 98 | return false; |
| 99 | break; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 100 | default: |
| 101 | BUG(); |
| 102 | } |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 103 | |
| 104 | return true; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | /* |
Chao Yu | 81c1a0f1 | 2014-02-27 19:12:24 +0800 | [diff] [blame] | 108 | * Readahead CP/NAT/SIT/SSA pages |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 109 | */ |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 110 | 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] | 111 | { |
| 112 | block_t prev_blk_addr = 0; |
| 113 | struct page *page; |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 114 | block_t blkno = start; |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 115 | |
| 116 | struct f2fs_io_info fio = { |
| 117 | .type = META, |
| 118 | .rw = READ_SYNC | REQ_META | REQ_PRIO |
| 119 | }; |
| 120 | |
| 121 | for (; nrpages-- > 0; blkno++) { |
| 122 | block_t blk_addr; |
| 123 | |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 124 | if (!is_valid_blkaddr(sbi, blkno, type)) |
| 125 | goto out; |
| 126 | |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 127 | switch (type) { |
| 128 | case META_NAT: |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 129 | if (unlikely(blkno >= |
| 130 | NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 131 | blkno = 0; |
Chao Yu | 66b00c1 | 2014-12-08 14:59:17 +0800 | [diff] [blame] | 132 | /* get nat block addr */ |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 133 | blk_addr = current_nat_addr(sbi, |
| 134 | blkno * NAT_ENTRY_PER_BLOCK); |
| 135 | break; |
| 136 | case META_SIT: |
| 137 | /* get sit block addr */ |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 138 | blk_addr = current_sit_addr(sbi, |
| 139 | blkno * SIT_ENTRY_PER_BLOCK); |
| 140 | if (blkno != start && prev_blk_addr + 1 != blk_addr) |
| 141 | goto out; |
| 142 | prev_blk_addr = blk_addr; |
| 143 | break; |
Chao Yu | 81c1a0f1 | 2014-02-27 19:12:24 +0800 | [diff] [blame] | 144 | case META_SSA: |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 145 | case META_CP: |
Jaegeuk Kim | 4c521f49 | 2014-09-11 13:49:55 -0700 | [diff] [blame] | 146 | case META_POR: |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 147 | blk_addr = blkno; |
| 148 | break; |
| 149 | default: |
| 150 | BUG(); |
| 151 | } |
| 152 | |
| 153 | page = grab_cache_page(META_MAPPING(sbi), blk_addr); |
| 154 | if (!page) |
| 155 | continue; |
| 156 | if (PageUptodate(page)) { |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 157 | f2fs_put_page(page, 1); |
| 158 | continue; |
| 159 | } |
| 160 | |
| 161 | f2fs_submit_page_mbio(sbi, page, blk_addr, &fio); |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 162 | f2fs_put_page(page, 0); |
| 163 | } |
| 164 | out: |
| 165 | f2fs_submit_merged_bio(sbi, META, READ); |
| 166 | return blkno - start; |
| 167 | } |
| 168 | |
Chao Yu | 635aee1 | 2014-12-08 15:02:52 +0800 | [diff] [blame] | 169 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
| 170 | { |
| 171 | struct page *page; |
| 172 | bool readahead = false; |
| 173 | |
| 174 | page = find_get_page(META_MAPPING(sbi), index); |
| 175 | if (!page || (page && !PageUptodate(page))) |
| 176 | readahead = true; |
| 177 | f2fs_put_page(page, 0); |
| 178 | |
| 179 | if (readahead) |
| 180 | ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR); |
| 181 | } |
| 182 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 183 | static int f2fs_write_meta_page(struct page *page, |
| 184 | struct writeback_control *wbc) |
| 185 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 186 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 187 | |
Chao Yu | ecda0de | 2014-05-06 16:48:26 +0800 | [diff] [blame] | 188 | trace_f2fs_writepage(page, META); |
| 189 | |
Jaegeuk Kim | 203681f | 2014-02-05 13:03:57 +0900 | [diff] [blame] | 190 | if (unlikely(sbi->por_doing)) |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 191 | goto redirty_out; |
Jaegeuk Kim | 857dc4e | 2014-11-19 11:03:34 -0800 | [diff] [blame] | 192 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 193 | goto redirty_out; |
Jaegeuk Kim | 1e968fd | 2014-08-11 16:49:25 -0700 | [diff] [blame] | 194 | if (unlikely(f2fs_cp_error(sbi))) |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 195 | goto redirty_out; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 196 | |
Jaegeuk Kim | 3cb5ad1 | 2014-03-18 13:29:07 +0900 | [diff] [blame] | 197 | f2fs_wait_on_page_writeback(page, META); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 198 | write_meta_page(sbi, page); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 199 | dec_page_count(sbi, F2FS_DIRTY_META); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 200 | unlock_page(page); |
Jaegeuk Kim | 857dc4e | 2014-11-19 11:03:34 -0800 | [diff] [blame] | 201 | |
| 202 | if (wbc->for_reclaim) |
| 203 | f2fs_submit_merged_bio(sbi, META, WRITE); |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 204 | return 0; |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 205 | |
| 206 | redirty_out: |
Jaegeuk Kim | 76f6026 | 2014-04-15 16:04:15 +0900 | [diff] [blame] | 207 | redirty_page_for_writepage(wbc, page); |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 208 | return AOP_WRITEPAGE_ACTIVATE; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | static int f2fs_write_meta_pages(struct address_space *mapping, |
| 212 | struct writeback_control *wbc) |
| 213 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 214 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 215 | long diff, written; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 216 | |
Chao Yu | e574843 | 2014-05-06 16:51:24 +0800 | [diff] [blame] | 217 | trace_f2fs_writepages(mapping->host, wbc, META); |
| 218 | |
Jaegeuk Kim | 5459aa9 | 2013-12-17 17:28:41 +0900 | [diff] [blame] | 219 | /* collect a number of dirty meta pages and write together */ |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 220 | if (wbc->for_kupdate || |
| 221 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 222 | goto skip_write; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 223 | |
| 224 | /* if mounting is failed, skip writing node pages */ |
| 225 | mutex_lock(&sbi->cp_mutex); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 226 | diff = nr_pages_to_write(sbi, META, wbc); |
| 227 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 228 | mutex_unlock(&sbi->cp_mutex); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 229 | 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] | 230 | return 0; |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 231 | |
| 232 | skip_write: |
| 233 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); |
| 234 | return 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, |
| 238 | long nr_to_write) |
| 239 | { |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 240 | struct address_space *mapping = META_MAPPING(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 241 | pgoff_t index = 0, end = LONG_MAX; |
| 242 | struct pagevec pvec; |
| 243 | long nwritten = 0; |
| 244 | struct writeback_control wbc = { |
| 245 | .for_reclaim = 0, |
| 246 | }; |
| 247 | |
| 248 | pagevec_init(&pvec, 0); |
| 249 | |
| 250 | while (index <= end) { |
| 251 | int i, nr_pages; |
| 252 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, |
| 253 | PAGECACHE_TAG_DIRTY, |
| 254 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 255 | if (unlikely(nr_pages == 0)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 256 | break; |
| 257 | |
| 258 | for (i = 0; i < nr_pages; i++) { |
| 259 | struct page *page = pvec.pages[i]; |
Jaegeuk Kim | 203681f | 2014-02-05 13:03:57 +0900 | [diff] [blame] | 260 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 261 | lock_page(page); |
Jaegeuk Kim | 203681f | 2014-02-05 13:03:57 +0900 | [diff] [blame] | 262 | |
| 263 | if (unlikely(page->mapping != mapping)) { |
| 264 | continue_unlock: |
| 265 | unlock_page(page); |
| 266 | continue; |
| 267 | } |
| 268 | if (!PageDirty(page)) { |
| 269 | /* someone wrote it for us */ |
| 270 | goto continue_unlock; |
| 271 | } |
| 272 | |
| 273 | if (!clear_page_dirty_for_io(page)) |
| 274 | goto continue_unlock; |
| 275 | |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 276 | if (f2fs_write_meta_page(page, &wbc)) { |
| 277 | unlock_page(page); |
| 278 | break; |
| 279 | } |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 280 | nwritten++; |
| 281 | if (unlikely(nwritten >= nr_to_write)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 282 | break; |
| 283 | } |
| 284 | pagevec_release(&pvec); |
| 285 | cond_resched(); |
| 286 | } |
| 287 | |
| 288 | if (nwritten) |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 289 | f2fs_submit_merged_bio(sbi, type, WRITE); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 290 | |
| 291 | return nwritten; |
| 292 | } |
| 293 | |
| 294 | static int f2fs_set_meta_page_dirty(struct page *page) |
| 295 | { |
Jaegeuk Kim | 26c6b88 | 2013-10-24 17:53:29 +0900 | [diff] [blame] | 296 | trace_f2fs_set_page_dirty(page, META); |
| 297 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 298 | SetPageUptodate(page); |
| 299 | if (!PageDirty(page)) { |
| 300 | __set_page_dirty_nobuffers(page); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 301 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 302 | return 1; |
| 303 | } |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | const struct address_space_operations f2fs_meta_aops = { |
| 308 | .writepage = f2fs_write_meta_page, |
| 309 | .writepages = f2fs_write_meta_pages, |
| 310 | .set_page_dirty = f2fs_set_meta_page_dirty, |
| 311 | }; |
| 312 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 313 | 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] | 314 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 315 | struct inode_management *im = &sbi->im[type]; |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 316 | struct ino_entry *e; |
| 317 | retry: |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 318 | if (radix_tree_preload(GFP_NOFS)) { |
| 319 | cond_resched(); |
| 320 | goto retry; |
| 321 | } |
| 322 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 323 | spin_lock(&im->ino_lock); |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 324 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 325 | e = radix_tree_lookup(&im->ino_root, ino); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 326 | if (!e) { |
| 327 | e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); |
| 328 | if (!e) { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 329 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 330 | radix_tree_preload_end(); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 331 | goto retry; |
| 332 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 333 | if (radix_tree_insert(&im->ino_root, ino, e)) { |
| 334 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 335 | kmem_cache_free(ino_entry_slab, e); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 336 | radix_tree_preload_end(); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 337 | goto retry; |
| 338 | } |
| 339 | memset(e, 0, sizeof(struct ino_entry)); |
| 340 | e->ino = ino; |
| 341 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 342 | list_add_tail(&e->list, &im->ino_list); |
Jaegeuk Kim | 8c40294 | 2014-11-06 15:16:04 -0800 | [diff] [blame] | 343 | if (type != ORPHAN_INO) |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 344 | im->ino_num++; |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 345 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 346 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 347 | radix_tree_preload_end(); |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 348 | } |
| 349 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 350 | 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] | 351 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 352 | struct inode_management *im = &sbi->im[type]; |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 353 | struct ino_entry *e; |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 354 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 355 | spin_lock(&im->ino_lock); |
| 356 | e = radix_tree_lookup(&im->ino_root, ino); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 357 | if (e) { |
| 358 | list_del(&e->list); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 359 | radix_tree_delete(&im->ino_root, ino); |
| 360 | im->ino_num--; |
| 361 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 362 | kmem_cache_free(ino_entry_slab, e); |
| 363 | return; |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 364 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 365 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 366 | } |
| 367 | |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 368 | void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
| 369 | { |
| 370 | /* add new dirty ino entry into list */ |
| 371 | __add_ino_entry(sbi, ino, type); |
| 372 | } |
| 373 | |
| 374 | void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
| 375 | { |
| 376 | /* remove dirty ino entry from list */ |
| 377 | __remove_ino_entry(sbi, ino, type); |
| 378 | } |
| 379 | |
| 380 | /* mode should be APPEND_INO or UPDATE_INO */ |
| 381 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) |
| 382 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 383 | struct inode_management *im = &sbi->im[mode]; |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 384 | struct ino_entry *e; |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 385 | |
| 386 | spin_lock(&im->ino_lock); |
| 387 | e = radix_tree_lookup(&im->ino_root, ino); |
| 388 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 389 | return e ? true : false; |
| 390 | } |
| 391 | |
Jaegeuk Kim | 6f12ac2 | 2014-08-19 09:48:22 -0700 | [diff] [blame] | 392 | void release_dirty_inode(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 393 | { |
| 394 | struct ino_entry *e, *tmp; |
| 395 | int i; |
| 396 | |
| 397 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 398 | struct inode_management *im = &sbi->im[i]; |
| 399 | |
| 400 | spin_lock(&im->ino_lock); |
| 401 | list_for_each_entry_safe(e, tmp, &im->ino_list, list) { |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 402 | list_del(&e->list); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 403 | radix_tree_delete(&im->ino_root, e->ino); |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 404 | kmem_cache_free(ino_entry_slab, e); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 405 | im->ino_num--; |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 406 | } |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 407 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | fff04f9 | 2014-07-25 07:40:59 -0700 | [diff] [blame] | 408 | } |
| 409 | } |
| 410 | |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 411 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 412 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 413 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 414 | int err = 0; |
| 415 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 416 | spin_lock(&im->ino_lock); |
| 417 | if (unlikely(im->ino_num >= sbi->max_orphans)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 418 | err = -ENOSPC; |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 419 | else |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 420 | im->ino_num++; |
| 421 | spin_unlock(&im->ino_lock); |
Gu Zheng | 0d47c1a | 2013-12-26 18:24:19 +0800 | [diff] [blame] | 422 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 423 | return err; |
| 424 | } |
| 425 | |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 426 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
| 427 | { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 428 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
| 429 | |
| 430 | spin_lock(&im->ino_lock); |
| 431 | f2fs_bug_on(sbi, im->ino_num == 0); |
| 432 | im->ino_num--; |
| 433 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 434 | } |
| 435 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 436 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
| 437 | { |
Jaegeuk Kim | 39efac4 | 2014-07-24 18:15:17 -0700 | [diff] [blame] | 438 | /* add new orphan ino entry into list */ |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 439 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
| 443 | { |
Jaegeuk Kim | 953e6cc | 2014-07-25 15:47:16 -0700 | [diff] [blame] | 444 | /* remove orphan entry from orphan list */ |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 445 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
| 449 | { |
| 450 | struct inode *inode = f2fs_iget(sbi->sb, ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 451 | f2fs_bug_on(sbi, IS_ERR(inode)); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 452 | clear_nlink(inode); |
| 453 | |
| 454 | /* truncate all the data during iput */ |
| 455 | iput(inode); |
| 456 | } |
| 457 | |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 458 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 459 | { |
| 460 | block_t start_blk, orphan_blkaddr, i, j; |
| 461 | |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 462 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 463 | return; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 464 | |
Haicheng Li | aabe513 | 2013-10-23 12:39:32 +0800 | [diff] [blame] | 465 | sbi->por_doing = true; |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 466 | |
| 467 | start_blk = __start_cp_addr(sbi) + 1 + |
| 468 | le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 469 | orphan_blkaddr = __start_sum_addr(sbi) - 1; |
| 470 | |
Chao Yu | 662befd | 2014-02-07 16:11:53 +0800 | [diff] [blame] | 471 | ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); |
| 472 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 473 | for (i = 0; i < orphan_blkaddr; i++) { |
| 474 | struct page *page = get_meta_page(sbi, start_blk + i); |
| 475 | struct f2fs_orphan_block *orphan_blk; |
| 476 | |
| 477 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); |
| 478 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { |
| 479 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); |
| 480 | recover_orphan_inode(sbi, ino); |
| 481 | } |
| 482 | f2fs_put_page(page, 1); |
| 483 | } |
| 484 | /* clear Orphan Flag */ |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 485 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
Haicheng Li | aabe513 | 2013-10-23 12:39:32 +0800 | [diff] [blame] | 486 | sbi->por_doing = false; |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 487 | return; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) |
| 491 | { |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 492 | struct list_head *head; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 493 | struct f2fs_orphan_block *orphan_blk = NULL; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 494 | unsigned int nentries = 0; |
Gu Zheng | 4531929 | 2014-01-10 18:09:02 +0800 | [diff] [blame] | 495 | unsigned short index; |
Jaegeuk Kim | 8c40294 | 2014-11-06 15:16:04 -0800 | [diff] [blame] | 496 | unsigned short orphan_blocks; |
Gu Zheng | 4531929 | 2014-01-10 18:09:02 +0800 | [diff] [blame] | 497 | struct page *page = NULL; |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 498 | struct ino_entry *orphan = NULL; |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 499 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 500 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 501 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
Jaegeuk Kim | 8c40294 | 2014-11-06 15:16:04 -0800 | [diff] [blame] | 502 | |
Gu Zheng | 4531929 | 2014-01-10 18:09:02 +0800 | [diff] [blame] | 503 | for (index = 0; index < orphan_blocks; index++) |
Gu Zheng | 63f5384 | 2014-01-20 18:37:30 +0800 | [diff] [blame] | 504 | grab_meta_page(sbi, start_blk + index); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 505 | |
Gu Zheng | 4531929 | 2014-01-10 18:09:02 +0800 | [diff] [blame] | 506 | index = 1; |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 507 | spin_lock(&im->ino_lock); |
| 508 | head = &im->ino_list; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 509 | |
| 510 | /* loop for each orphan inode entry and write them in Jornal block */ |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 511 | list_for_each_entry(orphan, head, list) { |
| 512 | if (!page) { |
Gu Zheng | 63f5384 | 2014-01-20 18:37:30 +0800 | [diff] [blame] | 513 | page = find_get_page(META_MAPPING(sbi), start_blk++); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 514 | f2fs_bug_on(sbi, !page); |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 515 | orphan_blk = |
| 516 | (struct f2fs_orphan_block *)page_address(page); |
| 517 | memset(orphan_blk, 0, sizeof(*orphan_blk)); |
Gu Zheng | 63f5384 | 2014-01-20 18:37:30 +0800 | [diff] [blame] | 518 | f2fs_put_page(page, 0); |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 519 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 520 | |
Gu Zheng | 3679556 | 2013-11-26 16:44:16 +0800 | [diff] [blame] | 521 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 522 | |
Gu Zheng | 3679556 | 2013-11-26 16:44:16 +0800 | [diff] [blame] | 523 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 524 | /* |
| 525 | * an orphan block is full of 1020 entries, |
| 526 | * then we need to flush current orphan blocks |
| 527 | * and bring another one in memory |
| 528 | */ |
| 529 | orphan_blk->blk_addr = cpu_to_le16(index); |
| 530 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); |
| 531 | orphan_blk->entry_count = cpu_to_le32(nentries); |
| 532 | set_page_dirty(page); |
| 533 | f2fs_put_page(page, 1); |
| 534 | index++; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 535 | nentries = 0; |
| 536 | page = NULL; |
| 537 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 538 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 539 | |
Gu Zheng | 502c6e0 | 2013-11-19 18:03:58 +0800 | [diff] [blame] | 540 | if (page) { |
| 541 | orphan_blk->blk_addr = cpu_to_le16(index); |
| 542 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); |
| 543 | orphan_blk->entry_count = cpu_to_le32(nentries); |
| 544 | set_page_dirty(page); |
| 545 | f2fs_put_page(page, 1); |
| 546 | } |
| 547 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 548 | spin_unlock(&im->ino_lock); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, |
| 552 | block_t cp_addr, unsigned long long *version) |
| 553 | { |
| 554 | struct page *cp_page_1, *cp_page_2 = NULL; |
| 555 | unsigned long blk_size = sbi->blocksize; |
| 556 | struct f2fs_checkpoint *cp_block; |
| 557 | unsigned long long cur_version = 0, pre_version = 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 558 | size_t crc_offset; |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 559 | __u32 crc = 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 560 | |
| 561 | /* Read the 1st cp block in this CP pack */ |
| 562 | cp_page_1 = get_meta_page(sbi, cp_addr); |
| 563 | |
| 564 | /* get the version number */ |
| 565 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); |
| 566 | crc_offset = le32_to_cpu(cp_block->checksum_offset); |
| 567 | if (crc_offset >= blk_size) |
| 568 | goto invalid_cp1; |
| 569 | |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 570 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 571 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
| 572 | goto invalid_cp1; |
| 573 | |
Jaegeuk Kim | d71b556 | 2013-08-09 15:03:21 +0900 | [diff] [blame] | 574 | pre_version = cur_cp_version(cp_block); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 575 | |
| 576 | /* Read the 2nd cp block in this CP pack */ |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 577 | 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] | 578 | cp_page_2 = get_meta_page(sbi, cp_addr); |
| 579 | |
| 580 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); |
| 581 | crc_offset = le32_to_cpu(cp_block->checksum_offset); |
| 582 | if (crc_offset >= blk_size) |
| 583 | goto invalid_cp2; |
| 584 | |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 585 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 586 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
| 587 | goto invalid_cp2; |
| 588 | |
Jaegeuk Kim | d71b556 | 2013-08-09 15:03:21 +0900 | [diff] [blame] | 589 | cur_version = cur_cp_version(cp_block); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 590 | |
| 591 | if (cur_version == pre_version) { |
| 592 | *version = cur_version; |
| 593 | f2fs_put_page(cp_page_2, 1); |
| 594 | return cp_page_1; |
| 595 | } |
| 596 | invalid_cp2: |
| 597 | f2fs_put_page(cp_page_2, 1); |
| 598 | invalid_cp1: |
| 599 | f2fs_put_page(cp_page_1, 1); |
| 600 | return NULL; |
| 601 | } |
| 602 | |
| 603 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) |
| 604 | { |
| 605 | struct f2fs_checkpoint *cp_block; |
| 606 | struct f2fs_super_block *fsb = sbi->raw_super; |
| 607 | struct page *cp1, *cp2, *cur_page; |
| 608 | unsigned long blk_size = sbi->blocksize; |
| 609 | unsigned long long cp1_version = 0, cp2_version = 0; |
| 610 | unsigned long long cp_start_blk_no; |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 611 | unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
| 612 | block_t cp_blk_no; |
| 613 | int i; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 614 | |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 615 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 616 | if (!sbi->ckpt) |
| 617 | return -ENOMEM; |
| 618 | /* |
| 619 | * Finding out valid cp block involves read both |
| 620 | * sets( cp pack1 and cp pack 2) |
| 621 | */ |
| 622 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); |
| 623 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); |
| 624 | |
| 625 | /* The second checkpoint pack should start at the next segment */ |
Jaegeuk Kim | f9a4e6d | 2013-11-28 12:44:05 +0900 | [diff] [blame] | 626 | cp_start_blk_no += ((unsigned long long)1) << |
| 627 | le32_to_cpu(fsb->log_blocks_per_seg); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 628 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
| 629 | |
| 630 | if (cp1 && cp2) { |
| 631 | if (ver_after(cp2_version, cp1_version)) |
| 632 | cur_page = cp2; |
| 633 | else |
| 634 | cur_page = cp1; |
| 635 | } else if (cp1) { |
| 636 | cur_page = cp1; |
| 637 | } else if (cp2) { |
| 638 | cur_page = cp2; |
| 639 | } else { |
| 640 | goto fail_no_cp; |
| 641 | } |
| 642 | |
| 643 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); |
| 644 | memcpy(sbi->ckpt, cp_block, blk_size); |
| 645 | |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 646 | if (cp_blks <= 1) |
| 647 | goto done; |
| 648 | |
| 649 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); |
| 650 | if (cur_page == cp2) |
| 651 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); |
| 652 | |
| 653 | for (i = 1; i < cp_blks; i++) { |
| 654 | void *sit_bitmap_ptr; |
| 655 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; |
| 656 | |
| 657 | cur_page = get_meta_page(sbi, cp_blk_no + i); |
| 658 | sit_bitmap_ptr = page_address(cur_page); |
| 659 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); |
| 660 | f2fs_put_page(cur_page, 1); |
| 661 | } |
| 662 | done: |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 663 | f2fs_put_page(cp1, 1); |
| 664 | f2fs_put_page(cp2, 1); |
| 665 | return 0; |
| 666 | |
| 667 | fail_no_cp: |
| 668 | kfree(sbi->ckpt); |
| 669 | return -EINVAL; |
| 670 | } |
| 671 | |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 672 | static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 673 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 674 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 675 | |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 676 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
| 677 | return -EEXIST; |
Chao Yu | 2d7b822 | 2014-03-29 11:33:17 +0800 | [diff] [blame] | 678 | |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 679 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
| 680 | F2FS_I(inode)->dirty_dir = new; |
| 681 | list_add_tail(&new->list, &sbi->dir_inode_list); |
Jaegeuk Kim | dcdfff6 | 2013-10-22 20:56:10 +0900 | [diff] [blame] | 682 | stat_inc_dirty_dir(sbi); |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 683 | return 0; |
| 684 | } |
| 685 | |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 686 | void update_dirty_page(struct inode *inode, struct page *page) |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 687 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 688 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 689 | struct dir_inode_entry *new; |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 690 | int ret = 0; |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 691 | |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 692 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 693 | return; |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 694 | |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 695 | if (!S_ISDIR(inode->i_mode)) { |
| 696 | inode_inc_dirty_pages(inode); |
| 697 | goto out; |
| 698 | } |
| 699 | |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 700 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 701 | new->inode = inode; |
| 702 | INIT_LIST_HEAD(&new->list); |
| 703 | |
| 704 | spin_lock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 705 | ret = __add_dirty_inode(inode, new); |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 706 | inode_inc_dirty_pages(inode); |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 707 | spin_unlock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 708 | |
| 709 | if (ret) |
| 710 | kmem_cache_free(inode_entry_slab, new); |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 711 | out: |
| 712 | SetPagePrivate(page); |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 713 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 714 | |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 715 | void add_dirty_dir_inode(struct inode *inode) |
| 716 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 717 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 718 | struct dir_inode_entry *new = |
| 719 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 720 | int ret = 0; |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 721 | |
Jaegeuk Kim | 5deb826 | 2013-06-05 17:42:45 +0900 | [diff] [blame] | 722 | new->inode = inode; |
| 723 | INIT_LIST_HEAD(&new->list); |
| 724 | |
| 725 | spin_lock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 726 | ret = __add_dirty_inode(inode, new); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 727 | spin_unlock(&sbi->dir_inode_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 728 | |
| 729 | if (ret) |
| 730 | kmem_cache_free(inode_entry_slab, new); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | void remove_dirty_dir_inode(struct inode *inode) |
| 734 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 735 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 2d7b822 | 2014-03-29 11:33:17 +0800 | [diff] [blame] | 736 | struct dir_inode_entry *entry; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 737 | |
| 738 | if (!S_ISDIR(inode->i_mode)) |
| 739 | return; |
| 740 | |
| 741 | spin_lock(&sbi->dir_inode_lock); |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 742 | if (get_dirty_pages(inode) || |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 743 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { |
Jaegeuk Kim | 3b10b1f | 2013-05-27 10:32:01 +0900 | [diff] [blame] | 744 | spin_unlock(&sbi->dir_inode_lock); |
| 745 | return; |
| 746 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 747 | |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 748 | entry = F2FS_I(inode)->dirty_dir; |
| 749 | list_del(&entry->list); |
| 750 | F2FS_I(inode)->dirty_dir = NULL; |
| 751 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
| 752 | stat_dec_dirty_dir(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 753 | spin_unlock(&sbi->dir_inode_lock); |
Jaegeuk Kim | ed57c27 | 2014-04-15 11:19:28 +0900 | [diff] [blame] | 754 | kmem_cache_free(inode_entry_slab, entry); |
Jaegeuk Kim | 74d0b91 | 2013-05-15 16:40:02 +0900 | [diff] [blame] | 755 | |
| 756 | /* Only from the recovery routine */ |
Jaegeuk Kim | afc3eda | 2013-05-28 09:59:27 +0900 | [diff] [blame] | 757 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
| 758 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); |
Jaegeuk Kim | 74d0b91 | 2013-05-15 16:40:02 +0900 | [diff] [blame] | 759 | iput(inode); |
Jaegeuk Kim | afc3eda | 2013-05-28 09:59:27 +0900 | [diff] [blame] | 760 | } |
Jaegeuk Kim | 74d0b91 | 2013-05-15 16:40:02 +0900 | [diff] [blame] | 761 | } |
| 762 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 763 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
| 764 | { |
Gu Zheng | ce3b7d8 | 2013-11-19 18:03:47 +0800 | [diff] [blame] | 765 | struct list_head *head; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 766 | struct dir_inode_entry *entry; |
| 767 | struct inode *inode; |
| 768 | retry: |
Jaegeuk Kim | af41d3e | 2014-10-17 14:14:16 -0700 | [diff] [blame] | 769 | if (unlikely(f2fs_cp_error(sbi))) |
| 770 | return; |
| 771 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 772 | spin_lock(&sbi->dir_inode_lock); |
Gu Zheng | ce3b7d8 | 2013-11-19 18:03:47 +0800 | [diff] [blame] | 773 | |
| 774 | head = &sbi->dir_inode_list; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 775 | if (list_empty(head)) { |
| 776 | spin_unlock(&sbi->dir_inode_lock); |
| 777 | return; |
| 778 | } |
| 779 | entry = list_entry(head->next, struct dir_inode_entry, list); |
| 780 | inode = igrab(entry->inode); |
| 781 | spin_unlock(&sbi->dir_inode_lock); |
| 782 | if (inode) { |
Jaegeuk Kim | 87d6f89 | 2014-03-18 12:40:49 +0900 | [diff] [blame] | 783 | filemap_fdatawrite(inode->i_mapping); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 784 | iput(inode); |
| 785 | } else { |
| 786 | /* |
| 787 | * We should submit bio, since it exists several |
| 788 | * wribacking dentry pages in the freeing inode. |
| 789 | */ |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 790 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 791 | } |
| 792 | goto retry; |
| 793 | } |
| 794 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 795 | /* |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 796 | * Freeze all the FS-operations for checkpoint. |
| 797 | */ |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 798 | static int block_operations(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 799 | { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 800 | struct writeback_control wbc = { |
| 801 | .sync_mode = WB_SYNC_ALL, |
| 802 | .nr_to_write = LONG_MAX, |
| 803 | .for_reclaim = 0, |
| 804 | }; |
Jaegeuk Kim | c718379b | 2013-04-24 13:19:56 +0900 | [diff] [blame] | 805 | struct blk_plug plug; |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 806 | int err = 0; |
Jaegeuk Kim | c718379b | 2013-04-24 13:19:56 +0900 | [diff] [blame] | 807 | |
| 808 | blk_start_plug(&plug); |
| 809 | |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 810 | retry_flush_dents: |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 811 | f2fs_lock_all(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 812 | /* write all the dirty dentry pages */ |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 813 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 814 | f2fs_unlock_all(sbi); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 815 | sync_dirty_dir_inodes(sbi); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 816 | if (unlikely(f2fs_cp_error(sbi))) { |
| 817 | err = -EIO; |
| 818 | goto out; |
| 819 | } |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 820 | goto retry_flush_dents; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 821 | } |
| 822 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 823 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 824 | * POR: we should ensure that there are no dirty node pages |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 825 | * until finishing nat/sit flush. |
| 826 | */ |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 827 | retry_flush_nodes: |
Chao Yu | b3582c6 | 2014-07-03 18:58:39 +0800 | [diff] [blame] | 828 | down_write(&sbi->node_write); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 829 | |
| 830 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { |
Chao Yu | b3582c6 | 2014-07-03 18:58:39 +0800 | [diff] [blame] | 831 | up_write(&sbi->node_write); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 832 | sync_node_pages(sbi, 0, &wbc); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 833 | if (unlikely(f2fs_cp_error(sbi))) { |
| 834 | f2fs_unlock_all(sbi); |
| 835 | err = -EIO; |
| 836 | goto out; |
| 837 | } |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 838 | goto retry_flush_nodes; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 839 | } |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 840 | out: |
Jaegeuk Kim | c718379b | 2013-04-24 13:19:56 +0900 | [diff] [blame] | 841 | blk_finish_plug(&plug); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 842 | return err; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | static void unblock_operations(struct f2fs_sb_info *sbi) |
| 846 | { |
Chao Yu | b3582c6 | 2014-07-03 18:58:39 +0800 | [diff] [blame] | 847 | up_write(&sbi->node_write); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 848 | f2fs_unlock_all(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 849 | } |
| 850 | |
Changman Lee | fb51b5e | 2013-11-07 12:48:25 +0900 | [diff] [blame] | 851 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
| 852 | { |
| 853 | DEFINE_WAIT(wait); |
| 854 | |
| 855 | for (;;) { |
| 856 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); |
| 857 | |
| 858 | if (!get_pages(sbi, F2FS_WRITEBACK)) |
| 859 | break; |
| 860 | |
| 861 | io_schedule(); |
| 862 | } |
| 863 | finish_wait(&sbi->cp_wait, &wait); |
| 864 | } |
| 865 | |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 866 | 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] | 867 | { |
| 868 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
Jaegeuk Kim | cf2271e | 2014-07-25 15:47:25 -0700 | [diff] [blame] | 869 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
Huang Ying | 7704182 | 2014-09-12 20:19:48 +0800 | [diff] [blame] | 870 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 871 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
Huang Ying | 7704182 | 2014-09-12 20:19:48 +0800 | [diff] [blame] | 872 | nid_t last_nid = nm_i->next_scan_nid; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 873 | block_t start_blk; |
| 874 | struct page *cp_page; |
| 875 | unsigned int data_sum_blocks, orphan_blocks; |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 876 | __u32 crc32 = 0; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 877 | void *kaddr; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 878 | int i; |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 879 | int cp_payload_blks = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 880 | |
Jaegeuk Kim | 1e87a78 | 2014-04-15 13:57:55 +0900 | [diff] [blame] | 881 | /* |
| 882 | * This avoids to conduct wrong roll-forward operations and uses |
| 883 | * metapages, so should be called prior to sync_meta_pages below. |
| 884 | */ |
Jaegeuk Kim | cf2271e | 2014-07-25 15:47:25 -0700 | [diff] [blame] | 885 | discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg)); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 886 | |
| 887 | /* Flush all the NAT/SIT pages */ |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 888 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 889 | sync_meta_pages(sbi, META, LONG_MAX); |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 890 | if (unlikely(f2fs_cp_error(sbi))) |
| 891 | return; |
| 892 | } |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 893 | |
| 894 | next_free_nid(sbi, &last_nid); |
| 895 | |
| 896 | /* |
| 897 | * modify checkpoint |
| 898 | * version number is already updated |
| 899 | */ |
| 900 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); |
| 901 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); |
| 902 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 903 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 904 | ckpt->cur_node_segno[i] = |
| 905 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); |
| 906 | ckpt->cur_node_blkoff[i] = |
| 907 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); |
| 908 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = |
| 909 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); |
| 910 | } |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 911 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 912 | ckpt->cur_data_segno[i] = |
| 913 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); |
| 914 | ckpt->cur_data_blkoff[i] = |
| 915 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); |
| 916 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = |
| 917 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); |
| 918 | } |
| 919 | |
| 920 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); |
| 921 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); |
| 922 | ckpt->next_free_nid = cpu_to_le32(last_nid); |
| 923 | |
| 924 | /* 2 cp + n data seg summary + orphan inode blocks */ |
| 925 | data_sum_blocks = npages_for_summary_flush(sbi); |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 926 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 927 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 928 | else |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 929 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 930 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 931 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 932 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
| 933 | orphan_blocks); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 934 | |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 935 | if (cpc->reason == CP_UMOUNT) { |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 936 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 937 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 938 | cp_payload_blks + data_sum_blocks + |
| 939 | orphan_blocks + NR_CURSEG_NODE_TYPE); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 940 | } else { |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 941 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 942 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 943 | cp_payload_blks + data_sum_blocks + |
| 944 | orphan_blocks); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 945 | } |
| 946 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 947 | if (orphan_num) |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 948 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 949 | else |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 950 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 951 | |
Jaegeuk Kim | 2ae4c67 | 2014-09-02 15:43:52 -0700 | [diff] [blame] | 952 | if (sbi->need_fsck) |
| 953 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); |
| 954 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 955 | /* update SIT/NAT bitmap */ |
| 956 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); |
| 957 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); |
| 958 | |
| 959 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); |
Jaegeuk Kim | 7e586fa | 2013-06-19 20:47:19 +0900 | [diff] [blame] | 960 | *((__le32 *)((unsigned char *)ckpt + |
| 961 | le32_to_cpu(ckpt->checksum_offset))) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 962 | = cpu_to_le32(crc32); |
| 963 | |
| 964 | start_blk = __start_cp_addr(sbi); |
| 965 | |
| 966 | /* write out checkpoint buffer at block 0 */ |
| 967 | cp_page = grab_meta_page(sbi, start_blk++); |
| 968 | kaddr = page_address(cp_page); |
| 969 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); |
| 970 | set_page_dirty(cp_page); |
| 971 | f2fs_put_page(cp_page, 1); |
| 972 | |
Changman Lee | 1dbe415 | 2014-05-12 12:27:43 +0900 | [diff] [blame] | 973 | for (i = 1; i < 1 + cp_payload_blks; i++) { |
| 974 | cp_page = grab_meta_page(sbi, start_blk++); |
| 975 | kaddr = page_address(cp_page); |
| 976 | memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, |
| 977 | (1 << sbi->log_blocksize)); |
| 978 | set_page_dirty(cp_page); |
| 979 | f2fs_put_page(cp_page, 1); |
| 980 | } |
| 981 | |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 982 | if (orphan_num) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 983 | write_orphan_inodes(sbi, start_blk); |
| 984 | start_blk += orphan_blocks; |
| 985 | } |
| 986 | |
| 987 | write_data_summaries(sbi, start_blk); |
| 988 | start_blk += data_sum_blocks; |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 989 | if (cpc->reason == CP_UMOUNT) { |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 990 | write_node_summaries(sbi, start_blk); |
| 991 | start_blk += NR_CURSEG_NODE_TYPE; |
| 992 | } |
| 993 | |
| 994 | /* writeout checkpoint block */ |
| 995 | cp_page = grab_meta_page(sbi, start_blk); |
| 996 | kaddr = page_address(cp_page); |
| 997 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); |
| 998 | set_page_dirty(cp_page); |
| 999 | f2fs_put_page(cp_page, 1); |
| 1000 | |
| 1001 | /* wait for previous submitted node/meta pages writeback */ |
Changman Lee | fb51b5e | 2013-11-07 12:48:25 +0900 | [diff] [blame] | 1002 | wait_on_all_pages_writeback(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1003 | |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1004 | if (unlikely(f2fs_cp_error(sbi))) |
| 1005 | return; |
| 1006 | |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1007 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
Gu Zheng | 9df27d9 | 2014-01-20 18:37:04 +0800 | [diff] [blame] | 1008 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1009 | |
| 1010 | /* update user_block_counts */ |
| 1011 | sbi->last_valid_block_count = sbi->total_valid_block_count; |
| 1012 | sbi->alloc_valid_block_count = 0; |
| 1013 | |
| 1014 | /* Here, we only have one bio having CP pack */ |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 1015 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1016 | |
Jaegeuk Kim | 6a8f8ca | 2014-10-29 14:37:22 -0700 | [diff] [blame] | 1017 | /* wait for previous submitted meta pages writeback */ |
| 1018 | wait_on_all_pages_writeback(sbi); |
| 1019 | |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1020 | release_dirty_inode(sbi); |
| 1021 | |
| 1022 | if (unlikely(f2fs_cp_error(sbi))) |
| 1023 | return; |
| 1024 | |
| 1025 | clear_prefree_segments(sbi); |
| 1026 | F2FS_RESET_SB_DIRT(sbi); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1027 | } |
| 1028 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1029 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 1030 | * We guarantee that this checkpoint procedure will not fail. |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1031 | */ |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1032 | void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1033 | { |
| 1034 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1035 | unsigned long long ckpt_ver; |
| 1036 | |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1037 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); |
Namjae Jeon | 2af4bd6 | 2013-04-23 18:26:54 +0900 | [diff] [blame] | 1038 | |
Jaegeuk Kim | 4372752 | 2013-02-04 15:11:17 +0900 | [diff] [blame] | 1039 | mutex_lock(&sbi->cp_mutex); |
Jaegeuk Kim | 8501017 | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1040 | |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1041 | if (!sbi->s_dirty && cpc->reason != CP_DISCARD) |
Jaegeuk Kim | 8501017 | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1042 | goto out; |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1043 | if (unlikely(f2fs_cp_error(sbi))) |
| 1044 | goto out; |
| 1045 | if (block_operations(sbi)) |
| 1046 | goto out; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1047 | |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1048 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
Namjae Jeon | 2af4bd6 | 2013-04-23 18:26:54 +0900 | [diff] [blame] | 1049 | |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 1050 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
| 1051 | f2fs_submit_merged_bio(sbi, NODE, WRITE); |
| 1052 | f2fs_submit_merged_bio(sbi, META, WRITE); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1053 | |
| 1054 | /* |
| 1055 | * update checkpoint pack index |
| 1056 | * Increase the version number so that |
| 1057 | * SIT entries and seg summaries are written at correct place |
| 1058 | */ |
Jaegeuk Kim | d71b556 | 2013-08-09 15:03:21 +0900 | [diff] [blame] | 1059 | ckpt_ver = cur_cp_version(ckpt); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1060 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
| 1061 | |
| 1062 | /* write cached NAT/SIT entries to NAT/SIT area */ |
| 1063 | flush_nat_entries(sbi); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1064 | flush_sit_entries(sbi, cpc); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1065 | |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1066 | /* unlock all the fs_lock[] in do_checkpoint() */ |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1067 | do_checkpoint(sbi, cpc); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1068 | |
| 1069 | unblock_operations(sbi); |
Changman Lee | 942e0be | 2014-02-13 15:12:29 +0900 | [diff] [blame] | 1070 | stat_inc_cp_count(sbi->stat_info); |
Jaegeuk Kim | 8501017 | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 1071 | out: |
| 1072 | mutex_unlock(&sbi->cp_mutex); |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 1073 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1074 | } |
| 1075 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1076 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1077 | { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1078 | int i; |
| 1079 | |
| 1080 | for (i = 0; i < MAX_INO_ENTRY; i++) { |
Chao Yu | 6729880 | 2014-11-18 11:18:36 +0800 | [diff] [blame] | 1081 | struct inode_management *im = &sbi->im[i]; |
| 1082 | |
| 1083 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); |
| 1084 | spin_lock_init(&im->ino_lock); |
| 1085 | INIT_LIST_HEAD(&im->ino_list); |
| 1086 | im->ino_num = 0; |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1087 | } |
| 1088 | |
Gu Zheng | 0d47c1a | 2013-12-26 18:24:19 +0800 | [diff] [blame] | 1089 | /* |
| 1090 | * considering 512 blocks in a segment 8 blocks are needed for cp |
| 1091 | * and log segment summaries. Remaining blocks are used to keep |
| 1092 | * orphan entries with the limitation one reserved segment |
| 1093 | * for cp pack we can have max 1020*504 orphan entries |
| 1094 | */ |
Chao Yu | b5b8220 | 2014-08-22 16:17:38 +0800 | [diff] [blame] | 1095 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
| 1096 | NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK; |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1097 | } |
| 1098 | |
Namjae Jeon | 6e6093a | 2013-01-17 00:08:30 +0900 | [diff] [blame] | 1099 | int __init create_checkpoint_caches(void) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1100 | { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1101 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
| 1102 | sizeof(struct ino_entry)); |
| 1103 | if (!ino_entry_slab) |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1104 | return -ENOMEM; |
| 1105 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", |
Gu Zheng | e8512d2 | 2014-03-07 18:43:28 +0800 | [diff] [blame] | 1106 | sizeof(struct dir_inode_entry)); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 1107 | if (!inode_entry_slab) { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1108 | kmem_cache_destroy(ino_entry_slab); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1109 | return -ENOMEM; |
| 1110 | } |
| 1111 | return 0; |
| 1112 | } |
| 1113 | |
| 1114 | void destroy_checkpoint_caches(void) |
| 1115 | { |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1116 | kmem_cache_destroy(ino_entry_slab); |
Jaegeuk Kim | 127e670 | 2012-11-02 17:08:18 +0900 | [diff] [blame] | 1117 | kmem_cache_destroy(inode_entry_slab); |
| 1118 | } |