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4c8ff709 CY |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * f2fs compress support | |
4 | * | |
5 | * Copyright (c) 2019 Chao Yu <chao@kernel.org> | |
6 | */ | |
7 | ||
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
e41d12f5 | 10 | #include <linux/moduleparam.h> |
4c8ff709 CY |
11 | #include <linux/writeback.h> |
12 | #include <linux/backing-dev.h> | |
13 | #include <linux/lzo.h> | |
14 | #include <linux/lz4.h> | |
50cfa66f | 15 | #include <linux/zstd.h> |
6ce19aff | 16 | #include <linux/pagevec.h> |
4c8ff709 CY |
17 | |
18 | #include "f2fs.h" | |
19 | #include "node.h" | |
6ce19aff | 20 | #include "segment.h" |
4c8ff709 CY |
21 | #include <trace/events/f2fs.h> |
22 | ||
c68d6c88 CY |
23 | static struct kmem_cache *cic_entry_slab; |
24 | static struct kmem_cache *dic_entry_slab; | |
25 | ||
31083031 CY |
26 | static void *page_array_alloc(struct inode *inode, int nr) |
27 | { | |
28 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
29 | unsigned int size = sizeof(struct page *) * nr; | |
30 | ||
31 | if (likely(size <= sbi->page_array_slab_size)) | |
32410577 CY |
32 | return f2fs_kmem_cache_alloc(sbi->page_array_slab, |
33 | GFP_F2FS_ZERO, false, F2FS_I_SB(inode)); | |
31083031 CY |
34 | return f2fs_kzalloc(sbi, size, GFP_NOFS); |
35 | } | |
36 | ||
37 | static void page_array_free(struct inode *inode, void *pages, int nr) | |
38 | { | |
39 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
40 | unsigned int size = sizeof(struct page *) * nr; | |
41 | ||
42 | if (!pages) | |
43 | return; | |
44 | ||
45 | if (likely(size <= sbi->page_array_slab_size)) | |
46 | kmem_cache_free(sbi->page_array_slab, pages); | |
47 | else | |
48 | kfree(pages); | |
49 | } | |
50 | ||
4c8ff709 CY |
51 | struct f2fs_compress_ops { |
52 | int (*init_compress_ctx)(struct compress_ctx *cc); | |
53 | void (*destroy_compress_ctx)(struct compress_ctx *cc); | |
54 | int (*compress_pages)(struct compress_ctx *cc); | |
23b1faaa CY |
55 | int (*init_decompress_ctx)(struct decompress_io_ctx *dic); |
56 | void (*destroy_decompress_ctx)(struct decompress_io_ctx *dic); | |
4c8ff709 | 57 | int (*decompress_pages)(struct decompress_io_ctx *dic); |
c571fbb5 | 58 | bool (*is_level_valid)(int level); |
4c8ff709 CY |
59 | }; |
60 | ||
61 | static unsigned int offset_in_cluster(struct compress_ctx *cc, pgoff_t index) | |
62 | { | |
63 | return index & (cc->cluster_size - 1); | |
64 | } | |
65 | ||
66 | static pgoff_t cluster_idx(struct compress_ctx *cc, pgoff_t index) | |
67 | { | |
68 | return index >> cc->log_cluster_size; | |
69 | } | |
70 | ||
71 | static pgoff_t start_idx_of_cluster(struct compress_ctx *cc) | |
72 | { | |
73 | return cc->cluster_idx << cc->log_cluster_size; | |
74 | } | |
75 | ||
76 | bool f2fs_is_compressed_page(struct page *page) | |
77 | { | |
78 | if (!PagePrivate(page)) | |
79 | return false; | |
80 | if (!page_private(page)) | |
81 | return false; | |
b763f3be | 82 | if (page_private_nonpointer(page)) |
4c8ff709 | 83 | return false; |
29b993c7 | 84 | |
4c8ff709 CY |
85 | f2fs_bug_on(F2FS_M_SB(page->mapping), |
86 | *((u32 *)page_private(page)) != F2FS_COMPRESSED_PAGE_MAGIC); | |
87 | return true; | |
88 | } | |
89 | ||
90 | static void f2fs_set_compressed_page(struct page *page, | |
887347a0 | 91 | struct inode *inode, pgoff_t index, void *data) |
4c8ff709 | 92 | { |
1efc7831 CY |
93 | struct folio *folio = page_folio(page); |
94 | ||
95 | folio_attach_private(folio, (void *)data); | |
4c8ff709 CY |
96 | |
97 | /* i_crypto_info and iv index */ | |
1efc7831 CY |
98 | folio->index = index; |
99 | folio->mapping = inode->i_mapping; | |
4c8ff709 CY |
100 | } |
101 | ||
4c8ff709 CY |
102 | static void f2fs_drop_rpages(struct compress_ctx *cc, int len, bool unlock) |
103 | { | |
104 | int i; | |
105 | ||
106 | for (i = 0; i < len; i++) { | |
107 | if (!cc->rpages[i]) | |
108 | continue; | |
109 | if (unlock) | |
110 | unlock_page(cc->rpages[i]); | |
111 | else | |
112 | put_page(cc->rpages[i]); | |
113 | } | |
114 | } | |
115 | ||
116 | static void f2fs_put_rpages(struct compress_ctx *cc) | |
117 | { | |
118 | f2fs_drop_rpages(cc, cc->cluster_size, false); | |
119 | } | |
120 | ||
121 | static void f2fs_unlock_rpages(struct compress_ctx *cc, int len) | |
122 | { | |
123 | f2fs_drop_rpages(cc, len, true); | |
124 | } | |
125 | ||
4c8ff709 CY |
126 | static void f2fs_put_rpages_wbc(struct compress_ctx *cc, |
127 | struct writeback_control *wbc, bool redirty, int unlock) | |
128 | { | |
129 | unsigned int i; | |
130 | ||
131 | for (i = 0; i < cc->cluster_size; i++) { | |
132 | if (!cc->rpages[i]) | |
133 | continue; | |
134 | if (redirty) | |
135 | redirty_page_for_writepage(wbc, cc->rpages[i]); | |
136 | f2fs_put_page(cc->rpages[i], unlock); | |
137 | } | |
138 | } | |
139 | ||
140 | struct page *f2fs_compress_control_page(struct page *page) | |
141 | { | |
142 | return ((struct compress_io_ctx *)page_private(page))->rpages[0]; | |
143 | } | |
144 | ||
145 | int f2fs_init_compress_ctx(struct compress_ctx *cc) | |
146 | { | |
adfc6943 | 147 | if (cc->rpages) |
4c8ff709 CY |
148 | return 0; |
149 | ||
31083031 | 150 | cc->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 CY |
151 | return cc->rpages ? 0 : -ENOMEM; |
152 | } | |
153 | ||
8bfbfb0d | 154 | void f2fs_destroy_compress_ctx(struct compress_ctx *cc, bool reuse) |
4c8ff709 | 155 | { |
31083031 | 156 | page_array_free(cc->inode, cc->rpages, cc->cluster_size); |
4c8ff709 CY |
157 | cc->rpages = NULL; |
158 | cc->nr_rpages = 0; | |
159 | cc->nr_cpages = 0; | |
3271d7eb | 160 | cc->valid_nr_cpages = 0; |
8bfbfb0d CY |
161 | if (!reuse) |
162 | cc->cluster_idx = NULL_CLUSTER; | |
4c8ff709 CY |
163 | } |
164 | ||
10de741a | 165 | void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct folio *folio) |
4c8ff709 CY |
166 | { |
167 | unsigned int cluster_ofs; | |
168 | ||
10de741a | 169 | if (!f2fs_cluster_can_merge_page(cc, folio->index)) |
4c8ff709 CY |
170 | f2fs_bug_on(F2FS_I_SB(cc->inode), 1); |
171 | ||
10de741a CY |
172 | cluster_ofs = offset_in_cluster(cc, folio->index); |
173 | cc->rpages[cluster_ofs] = folio_page(folio, 0); | |
4c8ff709 | 174 | cc->nr_rpages++; |
10de741a | 175 | cc->cluster_idx = cluster_idx(cc, folio->index); |
4c8ff709 CY |
176 | } |
177 | ||
178 | #ifdef CONFIG_F2FS_FS_LZO | |
179 | static int lzo_init_compress_ctx(struct compress_ctx *cc) | |
180 | { | |
181 | cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
182 | LZO1X_MEM_COMPRESS, GFP_NOFS); | |
183 | if (!cc->private) | |
184 | return -ENOMEM; | |
185 | ||
186 | cc->clen = lzo1x_worst_compress(PAGE_SIZE << cc->log_cluster_size); | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static void lzo_destroy_compress_ctx(struct compress_ctx *cc) | |
191 | { | |
192 | kvfree(cc->private); | |
193 | cc->private = NULL; | |
194 | } | |
195 | ||
196 | static int lzo_compress_pages(struct compress_ctx *cc) | |
197 | { | |
198 | int ret; | |
199 | ||
200 | ret = lzo1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, | |
201 | &cc->clen, cc->private); | |
202 | if (ret != LZO_E_OK) { | |
a7811840 CY |
203 | f2fs_err_ratelimited(F2FS_I_SB(cc->inode), |
204 | "lzo compress failed, ret:%d", ret); | |
4c8ff709 CY |
205 | return -EIO; |
206 | } | |
207 | return 0; | |
208 | } | |
209 | ||
210 | static int lzo_decompress_pages(struct decompress_io_ctx *dic) | |
211 | { | |
212 | int ret; | |
213 | ||
214 | ret = lzo1x_decompress_safe(dic->cbuf->cdata, dic->clen, | |
215 | dic->rbuf, &dic->rlen); | |
216 | if (ret != LZO_E_OK) { | |
a7811840 CY |
217 | f2fs_err_ratelimited(F2FS_I_SB(dic->inode), |
218 | "lzo decompress failed, ret:%d", ret); | |
4c8ff709 CY |
219 | return -EIO; |
220 | } | |
221 | ||
222 | if (dic->rlen != PAGE_SIZE << dic->log_cluster_size) { | |
a7811840 CY |
223 | f2fs_err_ratelimited(F2FS_I_SB(dic->inode), |
224 | "lzo invalid rlen:%zu, expected:%lu", | |
225 | dic->rlen, PAGE_SIZE << dic->log_cluster_size); | |
4c8ff709 CY |
226 | return -EIO; |
227 | } | |
228 | return 0; | |
229 | } | |
230 | ||
231 | static const struct f2fs_compress_ops f2fs_lzo_ops = { | |
232 | .init_compress_ctx = lzo_init_compress_ctx, | |
233 | .destroy_compress_ctx = lzo_destroy_compress_ctx, | |
234 | .compress_pages = lzo_compress_pages, | |
235 | .decompress_pages = lzo_decompress_pages, | |
236 | }; | |
237 | #endif | |
238 | ||
239 | #ifdef CONFIG_F2FS_FS_LZ4 | |
240 | static int lz4_init_compress_ctx(struct compress_ctx *cc) | |
241 | { | |
3fde13f8 CY |
242 | unsigned int size = LZ4_MEM_COMPRESS; |
243 | ||
244 | #ifdef CONFIG_F2FS_FS_LZ4HC | |
b90e5086 | 245 | if (F2FS_I(cc->inode)->i_compress_level) |
3fde13f8 CY |
246 | size = LZ4HC_MEM_COMPRESS; |
247 | #endif | |
248 | ||
249 | cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), size, GFP_NOFS); | |
4c8ff709 CY |
250 | if (!cc->private) |
251 | return -ENOMEM; | |
252 | ||
f6644143 CY |
253 | /* |
254 | * we do not change cc->clen to LZ4_compressBound(inputsize) to | |
255 | * adapt worst compress case, because lz4 compressor can handle | |
256 | * output budget properly. | |
257 | */ | |
258 | cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
4c8ff709 CY |
259 | return 0; |
260 | } | |
261 | ||
262 | static void lz4_destroy_compress_ctx(struct compress_ctx *cc) | |
263 | { | |
264 | kvfree(cc->private); | |
265 | cc->private = NULL; | |
266 | } | |
267 | ||
3094e557 | 268 | static int lz4_compress_pages(struct compress_ctx *cc) |
3fde13f8 | 269 | { |
3094e557 | 270 | int len = -EINVAL; |
b90e5086 | 271 | unsigned char level = F2FS_I(cc->inode)->i_compress_level; |
3fde13f8 | 272 | |
3094e557 | 273 | if (!level) |
3fde13f8 CY |
274 | len = LZ4_compress_default(cc->rbuf, cc->cbuf->cdata, cc->rlen, |
275 | cc->clen, cc->private); | |
3fde13f8 | 276 | #ifdef CONFIG_F2FS_FS_LZ4HC |
3094e557 YL |
277 | else |
278 | len = LZ4_compress_HC(cc->rbuf, cc->cbuf->cdata, cc->rlen, | |
279 | cc->clen, level, cc->private); | |
3fde13f8 | 280 | #endif |
3094e557 YL |
281 | if (len < 0) |
282 | return len; | |
f6644143 CY |
283 | if (!len) |
284 | return -EAGAIN; | |
285 | ||
4c8ff709 CY |
286 | cc->clen = len; |
287 | return 0; | |
288 | } | |
289 | ||
290 | static int lz4_decompress_pages(struct decompress_io_ctx *dic) | |
291 | { | |
292 | int ret; | |
293 | ||
294 | ret = LZ4_decompress_safe(dic->cbuf->cdata, dic->rbuf, | |
295 | dic->clen, dic->rlen); | |
296 | if (ret < 0) { | |
a7811840 CY |
297 | f2fs_err_ratelimited(F2FS_I_SB(dic->inode), |
298 | "lz4 decompress failed, ret:%d", ret); | |
4c8ff709 CY |
299 | return -EIO; |
300 | } | |
301 | ||
302 | if (ret != PAGE_SIZE << dic->log_cluster_size) { | |
a7811840 CY |
303 | f2fs_err_ratelimited(F2FS_I_SB(dic->inode), |
304 | "lz4 invalid ret:%d, expected:%lu", | |
305 | ret, PAGE_SIZE << dic->log_cluster_size); | |
4c8ff709 CY |
306 | return -EIO; |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
c571fbb5 SY |
311 | static bool lz4_is_level_valid(int lvl) |
312 | { | |
313 | #ifdef CONFIG_F2FS_FS_LZ4HC | |
314 | return !lvl || (lvl >= LZ4HC_MIN_CLEVEL && lvl <= LZ4HC_MAX_CLEVEL); | |
315 | #else | |
316 | return lvl == 0; | |
317 | #endif | |
318 | } | |
319 | ||
4c8ff709 CY |
320 | static const struct f2fs_compress_ops f2fs_lz4_ops = { |
321 | .init_compress_ctx = lz4_init_compress_ctx, | |
322 | .destroy_compress_ctx = lz4_destroy_compress_ctx, | |
323 | .compress_pages = lz4_compress_pages, | |
324 | .decompress_pages = lz4_decompress_pages, | |
c571fbb5 | 325 | .is_level_valid = lz4_is_level_valid, |
4c8ff709 CY |
326 | }; |
327 | #endif | |
328 | ||
50cfa66f | 329 | #ifdef CONFIG_F2FS_FS_ZSTD |
50cfa66f CY |
330 | static int zstd_init_compress_ctx(struct compress_ctx *cc) |
331 | { | |
cf30f6a5 NT |
332 | zstd_parameters params; |
333 | zstd_cstream *stream; | |
50cfa66f CY |
334 | void *workspace; |
335 | unsigned int workspace_size; | |
b90e5086 | 336 | unsigned char level = F2FS_I(cc->inode)->i_compress_level; |
3fde13f8 | 337 | |
00e120b5 | 338 | /* Need to remain this for backward compatibility */ |
3fde13f8 CY |
339 | if (!level) |
340 | level = F2FS_ZSTD_DEFAULT_CLEVEL; | |
50cfa66f | 341 | |
4ff23a65 | 342 | params = zstd_get_params(level, cc->rlen); |
cf30f6a5 | 343 | workspace_size = zstd_cstream_workspace_bound(¶ms.cParams); |
50cfa66f CY |
344 | |
345 | workspace = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
346 | workspace_size, GFP_NOFS); | |
347 | if (!workspace) | |
348 | return -ENOMEM; | |
349 | ||
cf30f6a5 | 350 | stream = zstd_init_cstream(¶ms, 0, workspace, workspace_size); |
50cfa66f | 351 | if (!stream) { |
a7811840 CY |
352 | f2fs_err_ratelimited(F2FS_I_SB(cc->inode), |
353 | "%s zstd_init_cstream failed", __func__); | |
50cfa66f CY |
354 | kvfree(workspace); |
355 | return -EIO; | |
356 | } | |
357 | ||
358 | cc->private = workspace; | |
359 | cc->private2 = stream; | |
360 | ||
361 | cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
362 | return 0; | |
363 | } | |
364 | ||
365 | static void zstd_destroy_compress_ctx(struct compress_ctx *cc) | |
366 | { | |
367 | kvfree(cc->private); | |
368 | cc->private = NULL; | |
369 | cc->private2 = NULL; | |
370 | } | |
371 | ||
372 | static int zstd_compress_pages(struct compress_ctx *cc) | |
373 | { | |
cf30f6a5 NT |
374 | zstd_cstream *stream = cc->private2; |
375 | zstd_in_buffer inbuf; | |
376 | zstd_out_buffer outbuf; | |
50cfa66f CY |
377 | int src_size = cc->rlen; |
378 | int dst_size = src_size - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
379 | int ret; | |
380 | ||
381 | inbuf.pos = 0; | |
382 | inbuf.src = cc->rbuf; | |
383 | inbuf.size = src_size; | |
384 | ||
385 | outbuf.pos = 0; | |
386 | outbuf.dst = cc->cbuf->cdata; | |
387 | outbuf.size = dst_size; | |
388 | ||
cf30f6a5 NT |
389 | ret = zstd_compress_stream(stream, &outbuf, &inbuf); |
390 | if (zstd_is_error(ret)) { | |
a7811840 CY |
391 | f2fs_err_ratelimited(F2FS_I_SB(cc->inode), |
392 | "%s zstd_compress_stream failed, ret: %d", | |
cf30f6a5 | 393 | __func__, zstd_get_error_code(ret)); |
50cfa66f CY |
394 | return -EIO; |
395 | } | |
396 | ||
cf30f6a5 NT |
397 | ret = zstd_end_stream(stream, &outbuf); |
398 | if (zstd_is_error(ret)) { | |
a7811840 CY |
399 | f2fs_err_ratelimited(F2FS_I_SB(cc->inode), |
400 | "%s zstd_end_stream returned %d", | |
cf30f6a5 | 401 | __func__, zstd_get_error_code(ret)); |
50cfa66f CY |
402 | return -EIO; |
403 | } | |
404 | ||
1454c978 CY |
405 | /* |
406 | * there is compressed data remained in intermediate buffer due to | |
407 | * no more space in cbuf.cdata | |
408 | */ | |
409 | if (ret) | |
410 | return -EAGAIN; | |
411 | ||
50cfa66f CY |
412 | cc->clen = outbuf.pos; |
413 | return 0; | |
414 | } | |
415 | ||
416 | static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic) | |
417 | { | |
cf30f6a5 | 418 | zstd_dstream *stream; |
50cfa66f CY |
419 | void *workspace; |
420 | unsigned int workspace_size; | |
0e2b7385 CY |
421 | unsigned int max_window_size = |
422 | MAX_COMPRESS_WINDOW_SIZE(dic->log_cluster_size); | |
50cfa66f | 423 | |
cf30f6a5 | 424 | workspace_size = zstd_dstream_workspace_bound(max_window_size); |
50cfa66f CY |
425 | |
426 | workspace = f2fs_kvmalloc(F2FS_I_SB(dic->inode), | |
427 | workspace_size, GFP_NOFS); | |
428 | if (!workspace) | |
429 | return -ENOMEM; | |
430 | ||
cf30f6a5 | 431 | stream = zstd_init_dstream(max_window_size, workspace, workspace_size); |
50cfa66f | 432 | if (!stream) { |
a7811840 CY |
433 | f2fs_err_ratelimited(F2FS_I_SB(dic->inode), |
434 | "%s zstd_init_dstream failed", __func__); | |
50cfa66f CY |
435 | kvfree(workspace); |
436 | return -EIO; | |
437 | } | |
438 | ||
439 | dic->private = workspace; | |
440 | dic->private2 = stream; | |
441 | ||
442 | return 0; | |
443 | } | |
444 | ||
445 | static void zstd_destroy_decompress_ctx(struct decompress_io_ctx *dic) | |
446 | { | |
447 | kvfree(dic->private); | |
448 | dic->private = NULL; | |
449 | dic->private2 = NULL; | |
450 | } | |
451 | ||
452 | static int zstd_decompress_pages(struct decompress_io_ctx *dic) | |
453 | { | |
cf30f6a5 NT |
454 | zstd_dstream *stream = dic->private2; |
455 | zstd_in_buffer inbuf; | |
456 | zstd_out_buffer outbuf; | |
50cfa66f CY |
457 | int ret; |
458 | ||
459 | inbuf.pos = 0; | |
460 | inbuf.src = dic->cbuf->cdata; | |
461 | inbuf.size = dic->clen; | |
462 | ||
463 | outbuf.pos = 0; | |
464 | outbuf.dst = dic->rbuf; | |
465 | outbuf.size = dic->rlen; | |
466 | ||
cf30f6a5 NT |
467 | ret = zstd_decompress_stream(stream, &outbuf, &inbuf); |
468 | if (zstd_is_error(ret)) { | |
a7811840 CY |
469 | f2fs_err_ratelimited(F2FS_I_SB(dic->inode), |
470 | "%s zstd_decompress_stream failed, ret: %d", | |
cf30f6a5 | 471 | __func__, zstd_get_error_code(ret)); |
50cfa66f CY |
472 | return -EIO; |
473 | } | |
474 | ||
475 | if (dic->rlen != outbuf.pos) { | |
a7811840 CY |
476 | f2fs_err_ratelimited(F2FS_I_SB(dic->inode), |
477 | "%s ZSTD invalid rlen:%zu, expected:%lu", | |
50cfa66f CY |
478 | __func__, dic->rlen, |
479 | PAGE_SIZE << dic->log_cluster_size); | |
480 | return -EIO; | |
481 | } | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
c571fbb5 SY |
486 | static bool zstd_is_level_valid(int lvl) |
487 | { | |
488 | return lvl >= zstd_min_clevel() && lvl <= zstd_max_clevel(); | |
489 | } | |
490 | ||
50cfa66f CY |
491 | static const struct f2fs_compress_ops f2fs_zstd_ops = { |
492 | .init_compress_ctx = zstd_init_compress_ctx, | |
493 | .destroy_compress_ctx = zstd_destroy_compress_ctx, | |
494 | .compress_pages = zstd_compress_pages, | |
495 | .init_decompress_ctx = zstd_init_decompress_ctx, | |
496 | .destroy_decompress_ctx = zstd_destroy_decompress_ctx, | |
497 | .decompress_pages = zstd_decompress_pages, | |
c571fbb5 | 498 | .is_level_valid = zstd_is_level_valid, |
50cfa66f CY |
499 | }; |
500 | #endif | |
501 | ||
6d92b201 CY |
502 | #ifdef CONFIG_F2FS_FS_LZO |
503 | #ifdef CONFIG_F2FS_FS_LZORLE | |
504 | static int lzorle_compress_pages(struct compress_ctx *cc) | |
505 | { | |
506 | int ret; | |
507 | ||
508 | ret = lzorle1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, | |
509 | &cc->clen, cc->private); | |
510 | if (ret != LZO_E_OK) { | |
b1c9d3f8 CY |
511 | f2fs_err_ratelimited(F2FS_I_SB(cc->inode), |
512 | "lzo-rle compress failed, ret:%d", ret); | |
6d92b201 CY |
513 | return -EIO; |
514 | } | |
515 | return 0; | |
516 | } | |
517 | ||
518 | static const struct f2fs_compress_ops f2fs_lzorle_ops = { | |
519 | .init_compress_ctx = lzo_init_compress_ctx, | |
520 | .destroy_compress_ctx = lzo_destroy_compress_ctx, | |
521 | .compress_pages = lzorle_compress_pages, | |
522 | .decompress_pages = lzo_decompress_pages, | |
523 | }; | |
524 | #endif | |
525 | #endif | |
526 | ||
4c8ff709 CY |
527 | static const struct f2fs_compress_ops *f2fs_cops[COMPRESS_MAX] = { |
528 | #ifdef CONFIG_F2FS_FS_LZO | |
529 | &f2fs_lzo_ops, | |
530 | #else | |
531 | NULL, | |
532 | #endif | |
533 | #ifdef CONFIG_F2FS_FS_LZ4 | |
534 | &f2fs_lz4_ops, | |
535 | #else | |
536 | NULL, | |
537 | #endif | |
50cfa66f CY |
538 | #ifdef CONFIG_F2FS_FS_ZSTD |
539 | &f2fs_zstd_ops, | |
540 | #else | |
541 | NULL, | |
542 | #endif | |
6d92b201 CY |
543 | #if defined(CONFIG_F2FS_FS_LZO) && defined(CONFIG_F2FS_FS_LZORLE) |
544 | &f2fs_lzorle_ops, | |
545 | #else | |
546 | NULL, | |
547 | #endif | |
4c8ff709 CY |
548 | }; |
549 | ||
550 | bool f2fs_is_compress_backend_ready(struct inode *inode) | |
551 | { | |
552 | if (!f2fs_compressed_file(inode)) | |
553 | return true; | |
554 | return f2fs_cops[F2FS_I(inode)->i_compress_algorithm]; | |
555 | } | |
556 | ||
c571fbb5 SY |
557 | bool f2fs_is_compress_level_valid(int alg, int lvl) |
558 | { | |
559 | const struct f2fs_compress_ops *cops = f2fs_cops[alg]; | |
560 | ||
561 | if (cops->is_level_valid) | |
562 | return cops->is_level_valid(lvl); | |
563 | ||
564 | return lvl == 0; | |
565 | } | |
566 | ||
99bbe307 | 567 | static mempool_t *compress_page_pool; |
5e6bbde9 CY |
568 | static int num_compress_pages = 512; |
569 | module_param(num_compress_pages, uint, 0444); | |
570 | MODULE_PARM_DESC(num_compress_pages, | |
571 | "Number of intermediate compress pages to preallocate"); | |
572 | ||
a1357a91 | 573 | int __init f2fs_init_compress_mempool(void) |
5e6bbde9 CY |
574 | { |
575 | compress_page_pool = mempool_create_page_pool(num_compress_pages, 0); | |
870af777 | 576 | return compress_page_pool ? 0 : -ENOMEM; |
5e6bbde9 CY |
577 | } |
578 | ||
579 | void f2fs_destroy_compress_mempool(void) | |
580 | { | |
581 | mempool_destroy(compress_page_pool); | |
582 | } | |
583 | ||
584 | static struct page *f2fs_compress_alloc_page(void) | |
4c8ff709 CY |
585 | { |
586 | struct page *page; | |
587 | ||
5e6bbde9 | 588 | page = mempool_alloc(compress_page_pool, GFP_NOFS); |
4c8ff709 | 589 | lock_page(page); |
5e6bbde9 | 590 | |
4c8ff709 CY |
591 | return page; |
592 | } | |
593 | ||
5e6bbde9 CY |
594 | static void f2fs_compress_free_page(struct page *page) |
595 | { | |
596 | if (!page) | |
597 | return; | |
b763f3be | 598 | detach_page_private(page); |
5e6bbde9 CY |
599 | page->mapping = NULL; |
600 | unlock_page(page); | |
601 | mempool_free(page, compress_page_pool); | |
602 | } | |
603 | ||
6fcaebac DJ |
604 | #define MAX_VMAP_RETRIES 3 |
605 | ||
606 | static void *f2fs_vmap(struct page **pages, unsigned int count) | |
607 | { | |
608 | int i; | |
609 | void *buf = NULL; | |
610 | ||
611 | for (i = 0; i < MAX_VMAP_RETRIES; i++) { | |
612 | buf = vm_map_ram(pages, count, -1); | |
613 | if (buf) | |
614 | break; | |
615 | vm_unmap_aliases(); | |
616 | } | |
617 | return buf; | |
618 | } | |
619 | ||
4c8ff709 CY |
620 | static int f2fs_compress_pages(struct compress_ctx *cc) |
621 | { | |
4c8ff709 CY |
622 | struct f2fs_inode_info *fi = F2FS_I(cc->inode); |
623 | const struct f2fs_compress_ops *cops = | |
624 | f2fs_cops[fi->i_compress_algorithm]; | |
31083031 | 625 | unsigned int max_len, new_nr_cpages; |
b28f047b | 626 | u32 chksum = 0; |
4c8ff709 CY |
627 | int i, ret; |
628 | ||
629 | trace_f2fs_compress_pages_start(cc->inode, cc->cluster_idx, | |
630 | cc->cluster_size, fi->i_compress_algorithm); | |
631 | ||
23b1faaa CY |
632 | if (cops->init_compress_ctx) { |
633 | ret = cops->init_compress_ctx(cc); | |
634 | if (ret) | |
635 | goto out; | |
636 | } | |
4c8ff709 CY |
637 | |
638 | max_len = COMPRESS_HEADER_SIZE + cc->clen; | |
639 | cc->nr_cpages = DIV_ROUND_UP(max_len, PAGE_SIZE); | |
3271d7eb | 640 | cc->valid_nr_cpages = cc->nr_cpages; |
4c8ff709 | 641 | |
31083031 | 642 | cc->cpages = page_array_alloc(cc->inode, cc->nr_cpages); |
4c8ff709 CY |
643 | if (!cc->cpages) { |
644 | ret = -ENOMEM; | |
645 | goto destroy_compress_ctx; | |
646 | } | |
647 | ||
863907a4 | 648 | for (i = 0; i < cc->nr_cpages; i++) |
5e6bbde9 | 649 | cc->cpages[i] = f2fs_compress_alloc_page(); |
4c8ff709 | 650 | |
6fcaebac | 651 | cc->rbuf = f2fs_vmap(cc->rpages, cc->cluster_size); |
4c8ff709 CY |
652 | if (!cc->rbuf) { |
653 | ret = -ENOMEM; | |
654 | goto out_free_cpages; | |
655 | } | |
656 | ||
6fcaebac | 657 | cc->cbuf = f2fs_vmap(cc->cpages, cc->nr_cpages); |
4c8ff709 CY |
658 | if (!cc->cbuf) { |
659 | ret = -ENOMEM; | |
660 | goto out_vunmap_rbuf; | |
661 | } | |
662 | ||
663 | ret = cops->compress_pages(cc); | |
664 | if (ret) | |
665 | goto out_vunmap_cbuf; | |
666 | ||
667 | max_len = PAGE_SIZE * (cc->cluster_size - 1) - COMPRESS_HEADER_SIZE; | |
668 | ||
669 | if (cc->clen > max_len) { | |
670 | ret = -EAGAIN; | |
671 | goto out_vunmap_cbuf; | |
672 | } | |
673 | ||
674 | cc->cbuf->clen = cpu_to_le32(cc->clen); | |
4c8ff709 | 675 | |
447286eb | 676 | if (fi->i_compress_flag & BIT(COMPRESS_CHKSUM)) |
b28f047b CY |
677 | chksum = f2fs_crc32(F2FS_I_SB(cc->inode), |
678 | cc->cbuf->cdata, cc->clen); | |
679 | cc->cbuf->chksum = cpu_to_le32(chksum); | |
680 | ||
4c8ff709 CY |
681 | for (i = 0; i < COMPRESS_DATA_RESERVED_SIZE; i++) |
682 | cc->cbuf->reserved[i] = cpu_to_le32(0); | |
683 | ||
31083031 CY |
684 | new_nr_cpages = DIV_ROUND_UP(cc->clen + COMPRESS_HEADER_SIZE, PAGE_SIZE); |
685 | ||
7fa6d598 EB |
686 | /* zero out any unused part of the last page */ |
687 | memset(&cc->cbuf->cdata[cc->clen], 0, | |
31083031 CY |
688 | (new_nr_cpages * PAGE_SIZE) - |
689 | (cc->clen + COMPRESS_HEADER_SIZE)); | |
7fa6d598 | 690 | |
6fcaebac DJ |
691 | vm_unmap_ram(cc->cbuf, cc->nr_cpages); |
692 | vm_unmap_ram(cc->rbuf, cc->cluster_size); | |
4c8ff709 | 693 | |
ebaaec35 | 694 | for (i = new_nr_cpages; i < cc->nr_cpages; i++) { |
5e6bbde9 | 695 | f2fs_compress_free_page(cc->cpages[i]); |
4c8ff709 CY |
696 | cc->cpages[i] = NULL; |
697 | } | |
698 | ||
23b1faaa CY |
699 | if (cops->destroy_compress_ctx) |
700 | cops->destroy_compress_ctx(cc); | |
09ff4801 | 701 | |
3271d7eb | 702 | cc->valid_nr_cpages = new_nr_cpages; |
4c8ff709 CY |
703 | |
704 | trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, | |
705 | cc->clen, ret); | |
706 | return 0; | |
707 | ||
708 | out_vunmap_cbuf: | |
6fcaebac | 709 | vm_unmap_ram(cc->cbuf, cc->nr_cpages); |
4c8ff709 | 710 | out_vunmap_rbuf: |
6fcaebac | 711 | vm_unmap_ram(cc->rbuf, cc->cluster_size); |
4c8ff709 CY |
712 | out_free_cpages: |
713 | for (i = 0; i < cc->nr_cpages; i++) { | |
714 | if (cc->cpages[i]) | |
5e6bbde9 | 715 | f2fs_compress_free_page(cc->cpages[i]); |
4c8ff709 | 716 | } |
31083031 | 717 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
4c8ff709 CY |
718 | cc->cpages = NULL; |
719 | destroy_compress_ctx: | |
23b1faaa CY |
720 | if (cops->destroy_compress_ctx) |
721 | cops->destroy_compress_ctx(cc); | |
4c8ff709 CY |
722 | out: |
723 | trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, | |
724 | cc->clen, ret); | |
725 | return ret; | |
726 | } | |
727 | ||
bff139b4 DJ |
728 | static int f2fs_prepare_decomp_mem(struct decompress_io_ctx *dic, |
729 | bool pre_alloc); | |
730 | static void f2fs_release_decomp_mem(struct decompress_io_ctx *dic, | |
731 | bool bypass_destroy_callback, bool pre_alloc); | |
732 | ||
733 | void f2fs_decompress_cluster(struct decompress_io_ctx *dic, bool in_task) | |
4c8ff709 | 734 | { |
4c8ff709 | 735 | struct f2fs_sb_info *sbi = F2FS_I_SB(dic->inode); |
7f59b277 | 736 | struct f2fs_inode_info *fi = F2FS_I(dic->inode); |
4c8ff709 CY |
737 | const struct f2fs_compress_ops *cops = |
738 | f2fs_cops[fi->i_compress_algorithm]; | |
bff139b4 | 739 | bool bypass_callback = false; |
4c8ff709 CY |
740 | int ret; |
741 | ||
4c8ff709 CY |
742 | trace_f2fs_decompress_pages_start(dic->inode, dic->cluster_idx, |
743 | dic->cluster_size, fi->i_compress_algorithm); | |
744 | ||
4c8ff709 CY |
745 | if (dic->failed) { |
746 | ret = -EIO; | |
7f59b277 | 747 | goto out_end_io; |
4c8ff709 CY |
748 | } |
749 | ||
bff139b4 DJ |
750 | ret = f2fs_prepare_decomp_mem(dic, false); |
751 | if (ret) { | |
752 | bypass_callback = true; | |
753 | goto out_release; | |
4c8ff709 CY |
754 | } |
755 | ||
756 | dic->clen = le32_to_cpu(dic->cbuf->clen); | |
757 | dic->rlen = PAGE_SIZE << dic->log_cluster_size; | |
758 | ||
759 | if (dic->clen > PAGE_SIZE * dic->nr_cpages - COMPRESS_HEADER_SIZE) { | |
760 | ret = -EFSCORRUPTED; | |
1aa161e4 JK |
761 | |
762 | /* Avoid f2fs_commit_super in irq context */ | |
633c8b94 | 763 | if (!in_task) |
901c12d1 | 764 | f2fs_handle_error_async(sbi, ERROR_FAIL_DECOMPRESSION); |
1aa161e4 JK |
765 | else |
766 | f2fs_handle_error(sbi, ERROR_FAIL_DECOMPRESSION); | |
bff139b4 | 767 | goto out_release; |
4c8ff709 CY |
768 | } |
769 | ||
770 | ret = cops->decompress_pages(dic); | |
771 | ||
447286eb | 772 | if (!ret && (fi->i_compress_flag & BIT(COMPRESS_CHKSUM))) { |
b28f047b CY |
773 | u32 provided = le32_to_cpu(dic->cbuf->chksum); |
774 | u32 calculated = f2fs_crc32(sbi, dic->cbuf->cdata, dic->clen); | |
775 | ||
776 | if (provided != calculated) { | |
777 | if (!is_inode_flag_set(dic->inode, FI_COMPRESS_CORRUPT)) { | |
778 | set_inode_flag(dic->inode, FI_COMPRESS_CORRUPT); | |
b1c9d3f8 CY |
779 | f2fs_info_ratelimited(sbi, |
780 | "checksum invalid, nid = %lu, %x vs %x", | |
781 | dic->inode->i_ino, | |
b28f047b CY |
782 | provided, calculated); |
783 | } | |
784 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
b28f047b CY |
785 | } |
786 | } | |
787 | ||
bff139b4 DJ |
788 | out_release: |
789 | f2fs_release_decomp_mem(dic, bypass_callback, false); | |
790 | ||
7f59b277 | 791 | out_end_io: |
4c8ff709 CY |
792 | trace_f2fs_decompress_pages_end(dic->inode, dic->cluster_idx, |
793 | dic->clen, ret); | |
bff139b4 | 794 | f2fs_decompress_end_io(dic, ret, in_task); |
7f59b277 EB |
795 | } |
796 | ||
797 | /* | |
798 | * This is called when a page of a compressed cluster has been read from disk | |
799 | * (or failed to be read from disk). It checks whether this page was the last | |
800 | * page being waited on in the cluster, and if so, it decompresses the cluster | |
801 | * (or in the case of a failure, cleans up without actually decompressing). | |
802 | */ | |
6ce19aff | 803 | void f2fs_end_read_compressed_page(struct page *page, bool failed, |
bff139b4 | 804 | block_t blkaddr, bool in_task) |
7f59b277 EB |
805 | { |
806 | struct decompress_io_ctx *dic = | |
807 | (struct decompress_io_ctx *)page_private(page); | |
808 | struct f2fs_sb_info *sbi = F2FS_I_SB(dic->inode); | |
809 | ||
810 | dec_page_count(sbi, F2FS_RD_DATA); | |
811 | ||
812 | if (failed) | |
813 | WRITE_ONCE(dic->failed, true); | |
bff139b4 | 814 | else if (blkaddr && in_task) |
6ce19aff CY |
815 | f2fs_cache_compressed_page(sbi, page, |
816 | dic->inode->i_ino, blkaddr); | |
7f59b277 EB |
817 | |
818 | if (atomic_dec_and_test(&dic->remaining_pages)) | |
bff139b4 | 819 | f2fs_decompress_cluster(dic, in_task); |
4c8ff709 CY |
820 | } |
821 | ||
822 | static bool is_page_in_cluster(struct compress_ctx *cc, pgoff_t index) | |
823 | { | |
824 | if (cc->cluster_idx == NULL_CLUSTER) | |
825 | return true; | |
826 | return cc->cluster_idx == cluster_idx(cc, index); | |
827 | } | |
828 | ||
829 | bool f2fs_cluster_is_empty(struct compress_ctx *cc) | |
830 | { | |
831 | return cc->nr_rpages == 0; | |
832 | } | |
833 | ||
834 | static bool f2fs_cluster_is_full(struct compress_ctx *cc) | |
835 | { | |
836 | return cc->cluster_size == cc->nr_rpages; | |
837 | } | |
838 | ||
839 | bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index) | |
840 | { | |
841 | if (f2fs_cluster_is_empty(cc)) | |
842 | return true; | |
843 | return is_page_in_cluster(cc, index); | |
844 | } | |
845 | ||
01fc4b9a | 846 | bool f2fs_all_cluster_page_ready(struct compress_ctx *cc, struct page **pages, |
4f8219f8 | 847 | int index, int nr_pages, bool uptodate) |
b368cc5e | 848 | { |
01fc4b9a | 849 | unsigned long pgidx = pages[index]->index; |
4f8219f8 | 850 | int i = uptodate ? 0 : 1; |
b368cc5e | 851 | |
4f8219f8 FC |
852 | /* |
853 | * when uptodate set to true, try to check all pages in cluster is | |
854 | * uptodate or not. | |
855 | */ | |
856 | if (uptodate && (pgidx % cc->cluster_size)) | |
b368cc5e FC |
857 | return false; |
858 | ||
4f8219f8 FC |
859 | if (nr_pages - index < cc->cluster_size) |
860 | return false; | |
b368cc5e | 861 | |
4f8219f8 | 862 | for (; i < cc->cluster_size; i++) { |
01fc4b9a | 863 | if (pages[index + i]->index != pgidx + i) |
b368cc5e | 864 | return false; |
01fc4b9a | 865 | if (uptodate && !PageUptodate(pages[index + i])) |
b368cc5e FC |
866 | return false; |
867 | } | |
868 | ||
869 | return true; | |
870 | } | |
871 | ||
5db479f0 | 872 | static bool cluster_has_invalid_data(struct compress_ctx *cc) |
4c8ff709 | 873 | { |
4c8ff709 CY |
874 | loff_t i_size = i_size_read(cc->inode); |
875 | unsigned nr_pages = DIV_ROUND_UP(i_size, PAGE_SIZE); | |
876 | int i; | |
877 | ||
878 | for (i = 0; i < cc->cluster_size; i++) { | |
879 | struct page *page = cc->rpages[i]; | |
880 | ||
8af85f71 | 881 | f2fs_bug_on(F2FS_I_SB(cc->inode), !page); |
4c8ff709 CY |
882 | |
883 | /* beyond EOF */ | |
5697e94d | 884 | if (page_folio(page)->index >= nr_pages) |
5db479f0 | 885 | return true; |
4c8ff709 | 886 | } |
5db479f0 | 887 | return false; |
4c8ff709 CY |
888 | } |
889 | ||
bbe1da7e CY |
890 | bool f2fs_sanity_check_cluster(struct dnode_of_data *dn) |
891 | { | |
2aaea533 | 892 | #ifdef CONFIG_F2FS_CHECK_FS |
bbe1da7e CY |
893 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
894 | unsigned int cluster_size = F2FS_I(dn->inode)->i_cluster_size; | |
bbe1da7e | 895 | int cluster_end = 0; |
2aaea533 | 896 | unsigned int count; |
bbe1da7e CY |
897 | int i; |
898 | char *reason = ""; | |
899 | ||
2aaea533 | 900 | if (dn->data_blkaddr != COMPRESS_ADDR) |
bbe1da7e CY |
901 | return false; |
902 | ||
903 | /* [..., COMPR_ADDR, ...] */ | |
904 | if (dn->ofs_in_node % cluster_size) { | |
905 | reason = "[*|C|*|*]"; | |
906 | goto out; | |
907 | } | |
908 | ||
2aaea533 | 909 | for (i = 1, count = 1; i < cluster_size; i++, count++) { |
bbe1da7e CY |
910 | block_t blkaddr = data_blkaddr(dn->inode, dn->node_page, |
911 | dn->ofs_in_node + i); | |
912 | ||
913 | /* [COMPR_ADDR, ..., COMPR_ADDR] */ | |
914 | if (blkaddr == COMPRESS_ADDR) { | |
915 | reason = "[C|*|C|*]"; | |
916 | goto out; | |
917 | } | |
9df6d6f9 ZQ |
918 | if (!__is_valid_data_blkaddr(blkaddr)) { |
919 | if (!cluster_end) | |
920 | cluster_end = i; | |
921 | continue; | |
922 | } | |
923 | /* [COMPR_ADDR, NULL_ADDR or NEW_ADDR, valid_blkaddr] */ | |
924 | if (cluster_end) { | |
925 | reason = "[C|N|N|V]"; | |
926 | goto out; | |
bbe1da7e CY |
927 | } |
928 | } | |
2aaea533 CY |
929 | |
930 | f2fs_bug_on(F2FS_I_SB(dn->inode), count != cluster_size && | |
931 | !is_inode_flag_set(dn->inode, FI_COMPRESS_RELEASED)); | |
932 | ||
bbe1da7e CY |
933 | return false; |
934 | out: | |
935 | f2fs_warn(sbi, "access invalid cluster, ino:%lu, nid:%u, ofs_in_node:%u, reason:%s", | |
936 | dn->inode->i_ino, dn->nid, dn->ofs_in_node, reason); | |
937 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
938 | return true; | |
2aaea533 CY |
939 | #else |
940 | return false; | |
941 | #endif | |
942 | } | |
943 | ||
944 | static int __f2fs_get_cluster_blocks(struct inode *inode, | |
945 | struct dnode_of_data *dn) | |
946 | { | |
947 | unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; | |
948 | int count, i; | |
949 | ||
f785cec2 | 950 | for (i = 0, count = 0; i < cluster_size; i++) { |
2aaea533 CY |
951 | block_t blkaddr = data_blkaddr(dn->inode, dn->node_page, |
952 | dn->ofs_in_node + i); | |
953 | ||
954 | if (__is_valid_data_blkaddr(blkaddr)) | |
955 | count++; | |
956 | } | |
957 | ||
958 | return count; | |
bbe1da7e CY |
959 | } |
960 | ||
f785cec2 YG |
961 | static int __f2fs_cluster_blocks(struct inode *inode, unsigned int cluster_idx, |
962 | enum cluster_check_type type) | |
4c8ff709 CY |
963 | { |
964 | struct dnode_of_data dn; | |
91f0fb69 CY |
965 | unsigned int start_idx = cluster_idx << |
966 | F2FS_I(inode)->i_log_cluster_size; | |
4c8ff709 CY |
967 | int ret; |
968 | ||
91f0fb69 CY |
969 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
970 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
4c8ff709 CY |
971 | if (ret) { |
972 | if (ret == -ENOENT) | |
973 | ret = 0; | |
974 | goto fail; | |
975 | } | |
976 | ||
bbe1da7e CY |
977 | if (f2fs_sanity_check_cluster(&dn)) { |
978 | ret = -EFSCORRUPTED; | |
979 | goto fail; | |
980 | } | |
981 | ||
4c8ff709 | 982 | if (dn.data_blkaddr == COMPRESS_ADDR) { |
f785cec2 YG |
983 | if (type == CLUSTER_COMPR_BLKS) |
984 | ret = 1 + __f2fs_get_cluster_blocks(inode, &dn); | |
985 | else if (type == CLUSTER_IS_COMPR) | |
2aaea533 | 986 | ret = 1; |
f785cec2 YG |
987 | } else if (type == CLUSTER_RAW_BLKS) { |
988 | ret = __f2fs_get_cluster_blocks(inode, &dn); | |
4c8ff709 CY |
989 | } |
990 | fail: | |
991 | f2fs_put_dnode(&dn); | |
992 | return ret; | |
993 | } | |
994 | ||
1a67cbe1 CY |
995 | /* return # of compressed blocks in compressed cluster */ |
996 | static int f2fs_compressed_blocks(struct compress_ctx *cc) | |
997 | { | |
f785cec2 YG |
998 | return __f2fs_cluster_blocks(cc->inode, cc->cluster_idx, |
999 | CLUSTER_COMPR_BLKS); | |
1000 | } | |
1001 | ||
1002 | /* return # of raw blocks in non-compressed cluster */ | |
1003 | static int f2fs_decompressed_blocks(struct inode *inode, | |
1004 | unsigned int cluster_idx) | |
1005 | { | |
1006 | return __f2fs_cluster_blocks(inode, cluster_idx, | |
1007 | CLUSTER_RAW_BLKS); | |
1a67cbe1 CY |
1008 | } |
1009 | ||
2aaea533 | 1010 | /* return whether cluster is compressed one or not */ |
4c8ff709 CY |
1011 | int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index) |
1012 | { | |
91f0fb69 CY |
1013 | return __f2fs_cluster_blocks(inode, |
1014 | index >> F2FS_I(inode)->i_log_cluster_size, | |
f785cec2 YG |
1015 | CLUSTER_IS_COMPR); |
1016 | } | |
1017 | ||
1018 | /* return whether cluster contains non raw blocks or not */ | |
1019 | bool f2fs_is_sparse_cluster(struct inode *inode, pgoff_t index) | |
1020 | { | |
1021 | unsigned int cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size; | |
1022 | ||
1023 | return f2fs_decompressed_blocks(inode, cluster_idx) != | |
1024 | F2FS_I(inode)->i_cluster_size; | |
4c8ff709 CY |
1025 | } |
1026 | ||
1027 | static bool cluster_may_compress(struct compress_ctx *cc) | |
1028 | { | |
602a16d5 | 1029 | if (!f2fs_need_compress_data(cc->inode)) |
4c8ff709 CY |
1030 | return false; |
1031 | if (f2fs_is_atomic_file(cc->inode)) | |
1032 | return false; | |
4c8ff709 CY |
1033 | if (!f2fs_cluster_is_full(cc)) |
1034 | return false; | |
dc35d73a CY |
1035 | if (unlikely(f2fs_cp_error(F2FS_I_SB(cc->inode)))) |
1036 | return false; | |
5db479f0 | 1037 | return !cluster_has_invalid_data(cc); |
4c8ff709 CY |
1038 | } |
1039 | ||
1040 | static void set_cluster_writeback(struct compress_ctx *cc) | |
1041 | { | |
1042 | int i; | |
1043 | ||
1044 | for (i = 0; i < cc->cluster_size; i++) { | |
1045 | if (cc->rpages[i]) | |
1046 | set_page_writeback(cc->rpages[i]); | |
1047 | } | |
1048 | } | |
1049 | ||
2174035a JK |
1050 | static void cancel_cluster_writeback(struct compress_ctx *cc, |
1051 | struct compress_io_ctx *cic, int submitted) | |
1052 | { | |
1053 | int i; | |
1054 | ||
1055 | /* Wait for submitted IOs. */ | |
1056 | if (submitted > 1) { | |
1057 | f2fs_submit_merged_write(F2FS_I_SB(cc->inode), DATA); | |
1058 | while (atomic_read(&cic->pending_pages) != | |
1059 | (cc->valid_nr_cpages - submitted + 1)) | |
1060 | f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); | |
1061 | } | |
1062 | ||
1063 | /* Cancel writeback and stay locked. */ | |
1064 | for (i = 0; i < cc->cluster_size; i++) { | |
1065 | if (i < submitted) { | |
1066 | inode_inc_dirty_pages(cc->inode); | |
1067 | lock_page(cc->rpages[i]); | |
1068 | } | |
1069 | clear_page_private_gcing(cc->rpages[i]); | |
1070 | if (folio_test_writeback(page_folio(cc->rpages[i]))) | |
1071 | end_page_writeback(cc->rpages[i]); | |
1072 | } | |
1073 | } | |
1074 | ||
4c8ff709 CY |
1075 | static void set_cluster_dirty(struct compress_ctx *cc) |
1076 | { | |
1077 | int i; | |
1078 | ||
1079 | for (i = 0; i < cc->cluster_size; i++) | |
4961acdd | 1080 | if (cc->rpages[i]) { |
4c8ff709 | 1081 | set_page_dirty(cc->rpages[i]); |
4961acdd CY |
1082 | set_page_private_gcing(cc->rpages[i]); |
1083 | } | |
4c8ff709 CY |
1084 | } |
1085 | ||
1086 | static int prepare_compress_overwrite(struct compress_ctx *cc, | |
1087 | struct page **pagep, pgoff_t index, void **fsdata) | |
1088 | { | |
1089 | struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); | |
1090 | struct address_space *mapping = cc->inode->i_mapping; | |
1091 | struct page *page; | |
4c8ff709 | 1092 | sector_t last_block_in_bio; |
ffc143db | 1093 | fgf_t fgp_flag = FGP_LOCK | FGP_WRITE | FGP_CREAT; |
4c8ff709 CY |
1094 | pgoff_t start_idx = start_idx_of_cluster(cc); |
1095 | int i, ret; | |
4c8ff709 CY |
1096 | |
1097 | retry: | |
91f0fb69 | 1098 | ret = f2fs_is_compressed_cluster(cc->inode, start_idx); |
4c8ff709 CY |
1099 | if (ret <= 0) |
1100 | return ret; | |
1101 | ||
4c8ff709 CY |
1102 | ret = f2fs_init_compress_ctx(cc); |
1103 | if (ret) | |
1104 | return ret; | |
1105 | ||
1106 | /* keep page reference to avoid page reclaim */ | |
1107 | for (i = 0; i < cc->cluster_size; i++) { | |
1108 | page = f2fs_pagecache_get_page(mapping, start_idx + i, | |
1109 | fgp_flag, GFP_NOFS); | |
1110 | if (!page) { | |
1111 | ret = -ENOMEM; | |
1112 | goto unlock_pages; | |
1113 | } | |
1114 | ||
1115 | if (PageUptodate(page)) | |
a949dc5f | 1116 | f2fs_put_page(page, 1); |
4c8ff709 | 1117 | else |
10de741a | 1118 | f2fs_compress_ctx_add_page(cc, page_folio(page)); |
4c8ff709 CY |
1119 | } |
1120 | ||
1121 | if (!f2fs_cluster_is_empty(cc)) { | |
1122 | struct bio *bio = NULL; | |
1123 | ||
1124 | ret = f2fs_read_multi_pages(cc, &bio, cc->cluster_size, | |
6aeb084f | 1125 | &last_block_in_bio, NULL, true); |
a949dc5f | 1126 | f2fs_put_rpages(cc); |
8bfbfb0d | 1127 | f2fs_destroy_compress_ctx(cc, true); |
4c8ff709 | 1128 | if (ret) |
a949dc5f | 1129 | goto out; |
4c8ff709 | 1130 | if (bio) |
bc29835a | 1131 | f2fs_submit_read_bio(sbi, bio, DATA); |
4c8ff709 CY |
1132 | |
1133 | ret = f2fs_init_compress_ctx(cc); | |
1134 | if (ret) | |
a949dc5f | 1135 | goto out; |
4c8ff709 CY |
1136 | } |
1137 | ||
1138 | for (i = 0; i < cc->cluster_size; i++) { | |
1139 | f2fs_bug_on(sbi, cc->rpages[i]); | |
1140 | ||
1141 | page = find_lock_page(mapping, start_idx + i); | |
a949dc5f CY |
1142 | if (!page) { |
1143 | /* page can be truncated */ | |
1144 | goto release_and_retry; | |
1145 | } | |
4c8ff709 CY |
1146 | |
1147 | f2fs_wait_on_page_writeback(page, DATA, true, true); | |
10de741a | 1148 | f2fs_compress_ctx_add_page(cc, page_folio(page)); |
4c8ff709 CY |
1149 | |
1150 | if (!PageUptodate(page)) { | |
a949dc5f CY |
1151 | release_and_retry: |
1152 | f2fs_put_rpages(cc); | |
4c8ff709 | 1153 | f2fs_unlock_rpages(cc, i + 1); |
8bfbfb0d | 1154 | f2fs_destroy_compress_ctx(cc, true); |
4c8ff709 CY |
1155 | goto retry; |
1156 | } | |
1157 | } | |
1158 | ||
4c8ff709 CY |
1159 | if (likely(!ret)) { |
1160 | *fsdata = cc->rpages; | |
1161 | *pagep = cc->rpages[offset_in_cluster(cc, index)]; | |
1162 | return cc->cluster_size; | |
1163 | } | |
1164 | ||
1165 | unlock_pages: | |
a949dc5f | 1166 | f2fs_put_rpages(cc); |
4c8ff709 | 1167 | f2fs_unlock_rpages(cc, i); |
8bfbfb0d | 1168 | f2fs_destroy_compress_ctx(cc, true); |
a949dc5f | 1169 | out: |
4c8ff709 CY |
1170 | return ret; |
1171 | } | |
1172 | ||
1173 | int f2fs_prepare_compress_overwrite(struct inode *inode, | |
1174 | struct page **pagep, pgoff_t index, void **fsdata) | |
1175 | { | |
1176 | struct compress_ctx cc = { | |
1177 | .inode = inode, | |
1178 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
1179 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
1180 | .cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size, | |
1181 | .rpages = NULL, | |
1182 | .nr_rpages = 0, | |
1183 | }; | |
1184 | ||
1185 | return prepare_compress_overwrite(&cc, pagep, index, fsdata); | |
1186 | } | |
1187 | ||
1188 | bool f2fs_compress_write_end(struct inode *inode, void *fsdata, | |
1189 | pgoff_t index, unsigned copied) | |
1190 | ||
1191 | { | |
1192 | struct compress_ctx cc = { | |
31083031 | 1193 | .inode = inode, |
4c8ff709 CY |
1194 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, |
1195 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
1196 | .rpages = fsdata, | |
1197 | }; | |
1198 | bool first_index = (index == cc.rpages[0]->index); | |
1199 | ||
1200 | if (copied) | |
1201 | set_cluster_dirty(&cc); | |
1202 | ||
1203 | f2fs_put_rpages_wbc(&cc, NULL, false, 1); | |
8bfbfb0d | 1204 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
1205 | |
1206 | return first_index; | |
1207 | } | |
1208 | ||
3265d3db CY |
1209 | int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock) |
1210 | { | |
1211 | void *fsdata = NULL; | |
1212 | struct page *pagep; | |
1213 | int log_cluster_size = F2FS_I(inode)->i_log_cluster_size; | |
1214 | pgoff_t start_idx = from >> (PAGE_SHIFT + log_cluster_size) << | |
1215 | log_cluster_size; | |
1216 | int err; | |
1217 | ||
1218 | err = f2fs_is_compressed_cluster(inode, start_idx); | |
1219 | if (err < 0) | |
1220 | return err; | |
1221 | ||
1222 | /* truncate normal cluster */ | |
1223 | if (!err) | |
1224 | return f2fs_do_truncate_blocks(inode, from, lock); | |
1225 | ||
1226 | /* truncate compressed cluster */ | |
1227 | err = f2fs_prepare_compress_overwrite(inode, &pagep, | |
1228 | start_idx, &fsdata); | |
1229 | ||
1230 | /* should not be a normal cluster */ | |
1231 | f2fs_bug_on(F2FS_I_SB(inode), err == 0); | |
1232 | ||
1233 | if (err <= 0) | |
1234 | return err; | |
1235 | ||
1236 | if (err > 0) { | |
1237 | struct page **rpages = fsdata; | |
1238 | int cluster_size = F2FS_I(inode)->i_cluster_size; | |
1239 | int i; | |
1240 | ||
1241 | for (i = cluster_size - 1; i >= 0; i--) { | |
1242 | loff_t start = rpages[i]->index << PAGE_SHIFT; | |
1243 | ||
1244 | if (from <= start) { | |
1245 | zero_user_segment(rpages[i], 0, PAGE_SIZE); | |
1246 | } else { | |
1247 | zero_user_segment(rpages[i], from - start, | |
1248 | PAGE_SIZE); | |
1249 | break; | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | f2fs_compress_write_end(inode, fsdata, start_idx, true); | |
1254 | } | |
1255 | return 0; | |
1256 | } | |
1257 | ||
4c8ff709 CY |
1258 | static int f2fs_write_compressed_pages(struct compress_ctx *cc, |
1259 | int *submitted, | |
1260 | struct writeback_control *wbc, | |
1261 | enum iostat_type io_type) | |
1262 | { | |
1263 | struct inode *inode = cc->inode; | |
1264 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1265 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1266 | struct f2fs_io_info fio = { | |
1267 | .sbi = sbi, | |
1268 | .ino = cc->inode->i_ino, | |
1269 | .type = DATA, | |
1270 | .op = REQ_OP_WRITE, | |
1271 | .op_flags = wbc_to_write_flags(wbc), | |
1272 | .old_blkaddr = NEW_ADDR, | |
1273 | .page = NULL, | |
1274 | .encrypted_page = NULL, | |
1275 | .compressed_page = NULL, | |
4c8ff709 CY |
1276 | .io_type = io_type, |
1277 | .io_wbc = wbc, | |
2eae077e CY |
1278 | .encrypted = fscrypt_inode_uses_fs_layer_crypto(cc->inode) ? |
1279 | 1 : 0, | |
4c8ff709 CY |
1280 | }; |
1281 | struct dnode_of_data dn; | |
1282 | struct node_info ni; | |
1283 | struct compress_io_ctx *cic; | |
1284 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
1285 | unsigned int last_index = cc->cluster_size - 1; | |
1286 | loff_t psize; | |
1287 | int i, err; | |
f082c6b2 | 1288 | bool quota_inode = IS_NOQUOTA(inode); |
4c8ff709 | 1289 | |
146949de | 1290 | /* we should bypass data pages to proceed the kworker jobs */ |
ee68d271 CY |
1291 | if (unlikely(f2fs_cp_error(sbi))) { |
1292 | mapping_set_error(cc->rpages[0]->mapping, -EIO); | |
1293 | goto out_free; | |
1294 | } | |
1295 | ||
f082c6b2 | 1296 | if (quota_inode) { |
79963d96 CY |
1297 | /* |
1298 | * We need to wait for node_write to avoid block allocation during | |
1299 | * checkpoint. This can only happen to quota writes which can cause | |
1300 | * the below discard race condition. | |
1301 | */ | |
e4544b63 | 1302 | f2fs_down_read(&sbi->node_write); |
79963d96 | 1303 | } else if (!f2fs_trylock_op(sbi)) { |
31083031 | 1304 | goto out_free; |
79963d96 | 1305 | } |
4c8ff709 | 1306 | |
df77fbd8 | 1307 | set_new_dnode(&dn, cc->inode, NULL, NULL, 0); |
4c8ff709 CY |
1308 | |
1309 | err = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
1310 | if (err) | |
1311 | goto out_unlock_op; | |
1312 | ||
1313 | for (i = 0; i < cc->cluster_size; i++) { | |
a2ced1ce | 1314 | if (data_blkaddr(dn.inode, dn.node_page, |
4c8ff709 CY |
1315 | dn.ofs_in_node + i) == NULL_ADDR) |
1316 | goto out_put_dnode; | |
1317 | } | |
1318 | ||
1319 | psize = (loff_t)(cc->rpages[last_index]->index + 1) << PAGE_SHIFT; | |
1320 | ||
a9419b63 | 1321 | err = f2fs_get_node_info(fio.sbi, dn.nid, &ni, false); |
4c8ff709 CY |
1322 | if (err) |
1323 | goto out_put_dnode; | |
1324 | ||
1325 | fio.version = ni.version; | |
1326 | ||
32410577 | 1327 | cic = f2fs_kmem_cache_alloc(cic_entry_slab, GFP_F2FS_ZERO, false, sbi); |
4c8ff709 CY |
1328 | if (!cic) |
1329 | goto out_put_dnode; | |
1330 | ||
1331 | cic->magic = F2FS_COMPRESSED_PAGE_MAGIC; | |
1332 | cic->inode = inode; | |
3271d7eb | 1333 | atomic_set(&cic->pending_pages, cc->valid_nr_cpages); |
31083031 | 1334 | cic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 CY |
1335 | if (!cic->rpages) |
1336 | goto out_put_cic; | |
1337 | ||
1338 | cic->nr_rpages = cc->cluster_size; | |
1339 | ||
3271d7eb | 1340 | for (i = 0; i < cc->valid_nr_cpages; i++) { |
4c8ff709 | 1341 | f2fs_set_compressed_page(cc->cpages[i], inode, |
887347a0 | 1342 | cc->rpages[i + 1]->index, cic); |
4c8ff709 | 1343 | fio.compressed_page = cc->cpages[i]; |
f567adb0 CY |
1344 | |
1345 | fio.old_blkaddr = data_blkaddr(dn.inode, dn.node_page, | |
1346 | dn.ofs_in_node + i + 1); | |
1347 | ||
1348 | /* wait for GCed page writeback via META_MAPPING */ | |
1349 | f2fs_wait_on_block_writeback(inode, fio.old_blkaddr); | |
1350 | ||
4c8ff709 CY |
1351 | if (fio.encrypted) { |
1352 | fio.page = cc->rpages[i + 1]; | |
1353 | err = f2fs_encrypt_one_page(&fio); | |
1354 | if (err) | |
1355 | goto out_destroy_crypt; | |
1356 | cc->cpages[i] = fio.encrypted_page; | |
1357 | } | |
1358 | } | |
1359 | ||
1360 | set_cluster_writeback(cc); | |
1361 | ||
1362 | for (i = 0; i < cc->cluster_size; i++) | |
1363 | cic->rpages[i] = cc->rpages[i]; | |
1364 | ||
1365 | for (i = 0; i < cc->cluster_size; i++, dn.ofs_in_node++) { | |
1366 | block_t blkaddr; | |
1367 | ||
a2ced1ce | 1368 | blkaddr = f2fs_data_blkaddr(&dn); |
95978caa | 1369 | fio.page = cc->rpages[i]; |
4c8ff709 CY |
1370 | fio.old_blkaddr = blkaddr; |
1371 | ||
1372 | /* cluster header */ | |
1373 | if (i == 0) { | |
1374 | if (blkaddr == COMPRESS_ADDR) | |
1375 | fio.compr_blocks++; | |
1376 | if (__is_valid_data_blkaddr(blkaddr)) | |
1377 | f2fs_invalidate_blocks(sbi, blkaddr); | |
1378 | f2fs_update_data_blkaddr(&dn, COMPRESS_ADDR); | |
1379 | goto unlock_continue; | |
1380 | } | |
1381 | ||
1382 | if (fio.compr_blocks && __is_valid_data_blkaddr(blkaddr)) | |
1383 | fio.compr_blocks++; | |
1384 | ||
3271d7eb | 1385 | if (i > cc->valid_nr_cpages) { |
4c8ff709 CY |
1386 | if (__is_valid_data_blkaddr(blkaddr)) { |
1387 | f2fs_invalidate_blocks(sbi, blkaddr); | |
1388 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); | |
1389 | } | |
1390 | goto unlock_continue; | |
1391 | } | |
1392 | ||
1393 | f2fs_bug_on(fio.sbi, blkaddr == NULL_ADDR); | |
1394 | ||
1395 | if (fio.encrypted) | |
1396 | fio.encrypted_page = cc->cpages[i - 1]; | |
1397 | else | |
1398 | fio.compressed_page = cc->cpages[i - 1]; | |
1399 | ||
1400 | cc->cpages[i - 1] = NULL; | |
2174035a | 1401 | fio.submitted = 0; |
4c8ff709 | 1402 | f2fs_outplace_write_data(&dn, &fio); |
2174035a JK |
1403 | if (unlikely(!fio.submitted)) { |
1404 | cancel_cluster_writeback(cc, cic, i); | |
1405 | ||
1406 | /* To call fscrypt_finalize_bounce_page */ | |
1407 | i = cc->valid_nr_cpages; | |
1408 | *submitted = 0; | |
1409 | goto out_destroy_crypt; | |
1410 | } | |
4c8ff709 CY |
1411 | (*submitted)++; |
1412 | unlock_continue: | |
1413 | inode_dec_dirty_pages(cc->inode); | |
1414 | unlock_page(fio.page); | |
1415 | } | |
1416 | ||
1417 | if (fio.compr_blocks) | |
1418 | f2fs_i_compr_blocks_update(inode, fio.compr_blocks - 1, false); | |
3271d7eb FC |
1419 | f2fs_i_compr_blocks_update(inode, cc->valid_nr_cpages, true); |
1420 | add_compr_block_stat(inode, cc->valid_nr_cpages); | |
4c8ff709 CY |
1421 | |
1422 | set_inode_flag(cc->inode, FI_APPEND_WRITE); | |
4c8ff709 CY |
1423 | |
1424 | f2fs_put_dnode(&dn); | |
f082c6b2 | 1425 | if (quota_inode) |
e4544b63 | 1426 | f2fs_up_read(&sbi->node_write); |
79963d96 | 1427 | else |
435cbab9 | 1428 | f2fs_unlock_op(sbi); |
4c8ff709 | 1429 | |
c10c9820 | 1430 | spin_lock(&fi->i_size_lock); |
4c8ff709 CY |
1431 | if (fi->last_disk_size < psize) |
1432 | fi->last_disk_size = psize; | |
c10c9820 | 1433 | spin_unlock(&fi->i_size_lock); |
4c8ff709 CY |
1434 | |
1435 | f2fs_put_rpages(cc); | |
31083031 CY |
1436 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
1437 | cc->cpages = NULL; | |
8bfbfb0d | 1438 | f2fs_destroy_compress_ctx(cc, false); |
4c8ff709 CY |
1439 | return 0; |
1440 | ||
1441 | out_destroy_crypt: | |
31083031 | 1442 | page_array_free(cc->inode, cic->rpages, cc->cluster_size); |
4c8ff709 | 1443 | |
2174035a JK |
1444 | for (--i; i >= 0; i--) { |
1445 | if (!cc->cpages[i]) | |
1446 | continue; | |
4c8ff709 | 1447 | fscrypt_finalize_bounce_page(&cc->cpages[i]); |
2174035a | 1448 | } |
4c8ff709 | 1449 | out_put_cic: |
c68d6c88 | 1450 | kmem_cache_free(cic_entry_slab, cic); |
4c8ff709 CY |
1451 | out_put_dnode: |
1452 | f2fs_put_dnode(&dn); | |
1453 | out_unlock_op: | |
f082c6b2 | 1454 | if (quota_inode) |
e4544b63 | 1455 | f2fs_up_read(&sbi->node_write); |
79963d96 | 1456 | else |
435cbab9 | 1457 | f2fs_unlock_op(sbi); |
31083031 | 1458 | out_free: |
3271d7eb | 1459 | for (i = 0; i < cc->valid_nr_cpages; i++) { |
827f0284 JK |
1460 | f2fs_compress_free_page(cc->cpages[i]); |
1461 | cc->cpages[i] = NULL; | |
1462 | } | |
31083031 CY |
1463 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
1464 | cc->cpages = NULL; | |
4c8ff709 CY |
1465 | return -EAGAIN; |
1466 | } | |
1467 | ||
1468 | void f2fs_compress_write_end_io(struct bio *bio, struct page *page) | |
1469 | { | |
1470 | struct f2fs_sb_info *sbi = bio->bi_private; | |
1471 | struct compress_io_ctx *cic = | |
1472 | (struct compress_io_ctx *)page_private(page); | |
8a430dd4 CY |
1473 | enum count_type type = WB_DATA_TYPE(page, |
1474 | f2fs_is_compressed_page(page)); | |
4c8ff709 CY |
1475 | int i; |
1476 | ||
1477 | if (unlikely(bio->bi_status)) | |
1478 | mapping_set_error(cic->inode->i_mapping, -EIO); | |
1479 | ||
5e6bbde9 | 1480 | f2fs_compress_free_page(page); |
4c8ff709 | 1481 | |
8a430dd4 | 1482 | dec_page_count(sbi, type); |
4c8ff709 | 1483 | |
e6c3948d | 1484 | if (atomic_dec_return(&cic->pending_pages)) |
4c8ff709 CY |
1485 | return; |
1486 | ||
1487 | for (i = 0; i < cic->nr_rpages; i++) { | |
1488 | WARN_ON(!cic->rpages[i]); | |
b763f3be | 1489 | clear_page_private_gcing(cic->rpages[i]); |
4c8ff709 CY |
1490 | end_page_writeback(cic->rpages[i]); |
1491 | } | |
1492 | ||
31083031 | 1493 | page_array_free(cic->inode, cic->rpages, cic->nr_rpages); |
c68d6c88 | 1494 | kmem_cache_free(cic_entry_slab, cic); |
4c8ff709 CY |
1495 | } |
1496 | ||
1497 | static int f2fs_write_raw_pages(struct compress_ctx *cc, | |
fd244524 | 1498 | int *submitted_p, |
4c8ff709 CY |
1499 | struct writeback_control *wbc, |
1500 | enum iostat_type io_type) | |
1501 | { | |
1502 | struct address_space *mapping = cc->inode->i_mapping; | |
fd244524 CY |
1503 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
1504 | int submitted, compr_blocks, i; | |
1505 | int ret = 0; | |
4c8ff709 CY |
1506 | |
1507 | compr_blocks = f2fs_compressed_blocks(cc); | |
7377e853 HJK |
1508 | |
1509 | for (i = 0; i < cc->cluster_size; i++) { | |
1510 | if (!cc->rpages[i]) | |
1511 | continue; | |
1512 | ||
1513 | redirty_page_for_writepage(wbc, cc->rpages[i]); | |
1514 | unlock_page(cc->rpages[i]); | |
4c8ff709 CY |
1515 | } |
1516 | ||
7377e853 HJK |
1517 | if (compr_blocks < 0) |
1518 | return compr_blocks; | |
1519 | ||
fd244524 CY |
1520 | /* overwrite compressed cluster w/ normal cluster */ |
1521 | if (compr_blocks > 0) | |
1522 | f2fs_lock_op(sbi); | |
1523 | ||
4c8ff709 CY |
1524 | for (i = 0; i < cc->cluster_size; i++) { |
1525 | if (!cc->rpages[i]) | |
1526 | continue; | |
1527 | retry_write: | |
7377e853 HJK |
1528 | lock_page(cc->rpages[i]); |
1529 | ||
4c8ff709 | 1530 | if (cc->rpages[i]->mapping != mapping) { |
7377e853 | 1531 | continue_unlock: |
4c8ff709 CY |
1532 | unlock_page(cc->rpages[i]); |
1533 | continue; | |
1534 | } | |
1535 | ||
7377e853 HJK |
1536 | if (!PageDirty(cc->rpages[i])) |
1537 | goto continue_unlock; | |
1538 | ||
16778aea | 1539 | if (folio_test_writeback(page_folio(cc->rpages[i]))) { |
babedcba YL |
1540 | if (wbc->sync_mode == WB_SYNC_NONE) |
1541 | goto continue_unlock; | |
1542 | f2fs_wait_on_page_writeback(cc->rpages[i], DATA, true, true); | |
1543 | } | |
1544 | ||
7377e853 HJK |
1545 | if (!clear_page_dirty_for_io(cc->rpages[i])) |
1546 | goto continue_unlock; | |
4c8ff709 | 1547 | |
46a75ef8 CY |
1548 | ret = f2fs_write_single_data_page(page_folio(cc->rpages[i]), |
1549 | &submitted, | |
4c8ff709 | 1550 | NULL, NULL, wbc, io_type, |
3afae09f | 1551 | compr_blocks, false); |
4c8ff709 CY |
1552 | if (ret) { |
1553 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
1554 | unlock_page(cc->rpages[i]); | |
1555 | ret = 0; | |
1556 | } else if (ret == -EAGAIN) { | |
fd244524 | 1557 | ret = 0; |
466357dc CY |
1558 | /* |
1559 | * for quota file, just redirty left pages to | |
1560 | * avoid deadlock caused by cluster update race | |
1561 | * from foreground operation. | |
1562 | */ | |
7377e853 | 1563 | if (IS_NOQUOTA(cc->inode)) |
fd244524 | 1564 | goto out; |
a64239d0 | 1565 | f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); |
4c8ff709 CY |
1566 | goto retry_write; |
1567 | } | |
fd244524 | 1568 | goto out; |
4c8ff709 CY |
1569 | } |
1570 | ||
fd244524 | 1571 | *submitted_p += submitted; |
4c8ff709 | 1572 | } |
3afae09f | 1573 | |
fd244524 CY |
1574 | out: |
1575 | if (compr_blocks > 0) | |
1576 | f2fs_unlock_op(sbi); | |
3afae09f | 1577 | |
fd244524 CY |
1578 | f2fs_balance_fs(sbi, true); |
1579 | return ret; | |
4c8ff709 CY |
1580 | } |
1581 | ||
1582 | int f2fs_write_multi_pages(struct compress_ctx *cc, | |
1583 | int *submitted, | |
1584 | struct writeback_control *wbc, | |
1585 | enum iostat_type io_type) | |
1586 | { | |
4c8ff709 CY |
1587 | int err; |
1588 | ||
1589 | *submitted = 0; | |
1590 | if (cluster_may_compress(cc)) { | |
1591 | err = f2fs_compress_pages(cc); | |
1592 | if (err == -EAGAIN) { | |
09631cf3 | 1593 | add_compr_block_stat(cc->inode, cc->cluster_size); |
4c8ff709 CY |
1594 | goto write; |
1595 | } else if (err) { | |
1596 | f2fs_put_rpages_wbc(cc, wbc, true, 1); | |
1597 | goto destroy_out; | |
1598 | } | |
1599 | ||
1600 | err = f2fs_write_compressed_pages(cc, submitted, | |
1601 | wbc, io_type); | |
4c8ff709 CY |
1602 | if (!err) |
1603 | return 0; | |
1604 | f2fs_bug_on(F2FS_I_SB(cc->inode), err != -EAGAIN); | |
1605 | } | |
1606 | write: | |
1607 | f2fs_bug_on(F2FS_I_SB(cc->inode), *submitted); | |
1608 | ||
1609 | err = f2fs_write_raw_pages(cc, submitted, wbc, io_type); | |
1610 | f2fs_put_rpages_wbc(cc, wbc, false, 0); | |
1611 | destroy_out: | |
8bfbfb0d | 1612 | f2fs_destroy_compress_ctx(cc, false); |
4c8ff709 CY |
1613 | return err; |
1614 | } | |
1615 | ||
bff139b4 DJ |
1616 | static inline bool allow_memalloc_for_decomp(struct f2fs_sb_info *sbi, |
1617 | bool pre_alloc) | |
1618 | { | |
1619 | return pre_alloc ^ f2fs_low_mem_mode(sbi); | |
1620 | } | |
1621 | ||
1622 | static int f2fs_prepare_decomp_mem(struct decompress_io_ctx *dic, | |
1623 | bool pre_alloc) | |
1624 | { | |
1625 | const struct f2fs_compress_ops *cops = | |
1626 | f2fs_cops[F2FS_I(dic->inode)->i_compress_algorithm]; | |
1627 | int i; | |
1628 | ||
1629 | if (!allow_memalloc_for_decomp(F2FS_I_SB(dic->inode), pre_alloc)) | |
1630 | return 0; | |
1631 | ||
1632 | dic->tpages = page_array_alloc(dic->inode, dic->cluster_size); | |
1633 | if (!dic->tpages) | |
1634 | return -ENOMEM; | |
1635 | ||
1636 | for (i = 0; i < dic->cluster_size; i++) { | |
1637 | if (dic->rpages[i]) { | |
1638 | dic->tpages[i] = dic->rpages[i]; | |
1639 | continue; | |
1640 | } | |
1641 | ||
1642 | dic->tpages[i] = f2fs_compress_alloc_page(); | |
bff139b4 DJ |
1643 | } |
1644 | ||
1645 | dic->rbuf = f2fs_vmap(dic->tpages, dic->cluster_size); | |
1646 | if (!dic->rbuf) | |
1647 | return -ENOMEM; | |
1648 | ||
1649 | dic->cbuf = f2fs_vmap(dic->cpages, dic->nr_cpages); | |
1650 | if (!dic->cbuf) | |
1651 | return -ENOMEM; | |
1652 | ||
8140654e ZQ |
1653 | if (cops->init_decompress_ctx) |
1654 | return cops->init_decompress_ctx(dic); | |
bff139b4 DJ |
1655 | |
1656 | return 0; | |
1657 | } | |
1658 | ||
1659 | static void f2fs_release_decomp_mem(struct decompress_io_ctx *dic, | |
1660 | bool bypass_destroy_callback, bool pre_alloc) | |
1661 | { | |
1662 | const struct f2fs_compress_ops *cops = | |
1663 | f2fs_cops[F2FS_I(dic->inode)->i_compress_algorithm]; | |
1664 | ||
1665 | if (!allow_memalloc_for_decomp(F2FS_I_SB(dic->inode), pre_alloc)) | |
1666 | return; | |
1667 | ||
1668 | if (!bypass_destroy_callback && cops->destroy_decompress_ctx) | |
1669 | cops->destroy_decompress_ctx(dic); | |
1670 | ||
1671 | if (dic->cbuf) | |
1672 | vm_unmap_ram(dic->cbuf, dic->nr_cpages); | |
1673 | ||
1674 | if (dic->rbuf) | |
1675 | vm_unmap_ram(dic->rbuf, dic->cluster_size); | |
1676 | } | |
1677 | ||
1678 | static void f2fs_free_dic(struct decompress_io_ctx *dic, | |
1679 | bool bypass_destroy_callback); | |
7f59b277 | 1680 | |
4c8ff709 CY |
1681 | struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc) |
1682 | { | |
4c8ff709 CY |
1683 | struct decompress_io_ctx *dic; |
1684 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
bff139b4 DJ |
1685 | struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); |
1686 | int i, ret; | |
4c8ff709 | 1687 | |
bff139b4 | 1688 | dic = f2fs_kmem_cache_alloc(dic_entry_slab, GFP_F2FS_ZERO, false, sbi); |
4c8ff709 CY |
1689 | if (!dic) |
1690 | return ERR_PTR(-ENOMEM); | |
1691 | ||
31083031 | 1692 | dic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 | 1693 | if (!dic->rpages) { |
c68d6c88 | 1694 | kmem_cache_free(dic_entry_slab, dic); |
4c8ff709 CY |
1695 | return ERR_PTR(-ENOMEM); |
1696 | } | |
1697 | ||
1698 | dic->magic = F2FS_COMPRESSED_PAGE_MAGIC; | |
1699 | dic->inode = cc->inode; | |
7f59b277 | 1700 | atomic_set(&dic->remaining_pages, cc->nr_cpages); |
4c8ff709 CY |
1701 | dic->cluster_idx = cc->cluster_idx; |
1702 | dic->cluster_size = cc->cluster_size; | |
1703 | dic->log_cluster_size = cc->log_cluster_size; | |
1704 | dic->nr_cpages = cc->nr_cpages; | |
7f59b277 | 1705 | refcount_set(&dic->refcnt, 1); |
4c8ff709 | 1706 | dic->failed = false; |
7f59b277 | 1707 | dic->need_verity = f2fs_need_verity(cc->inode, start_idx); |
4c8ff709 CY |
1708 | |
1709 | for (i = 0; i < dic->cluster_size; i++) | |
1710 | dic->rpages[i] = cc->rpages[i]; | |
1711 | dic->nr_rpages = cc->cluster_size; | |
1712 | ||
31083031 | 1713 | dic->cpages = page_array_alloc(dic->inode, dic->nr_cpages); |
bff139b4 DJ |
1714 | if (!dic->cpages) { |
1715 | ret = -ENOMEM; | |
4c8ff709 | 1716 | goto out_free; |
bff139b4 | 1717 | } |
4c8ff709 CY |
1718 | |
1719 | for (i = 0; i < dic->nr_cpages; i++) { | |
1720 | struct page *page; | |
1721 | ||
5e6bbde9 | 1722 | page = f2fs_compress_alloc_page(); |
4c8ff709 | 1723 | f2fs_set_compressed_page(page, cc->inode, |
887347a0 | 1724 | start_idx + i + 1, dic); |
4c8ff709 CY |
1725 | dic->cpages[i] = page; |
1726 | } | |
1727 | ||
bff139b4 DJ |
1728 | ret = f2fs_prepare_decomp_mem(dic, true); |
1729 | if (ret) | |
1730 | goto out_free; | |
1731 | ||
4c8ff709 CY |
1732 | return dic; |
1733 | ||
1734 | out_free: | |
bff139b4 DJ |
1735 | f2fs_free_dic(dic, true); |
1736 | return ERR_PTR(ret); | |
4c8ff709 CY |
1737 | } |
1738 | ||
bff139b4 DJ |
1739 | static void f2fs_free_dic(struct decompress_io_ctx *dic, |
1740 | bool bypass_destroy_callback) | |
4c8ff709 CY |
1741 | { |
1742 | int i; | |
1743 | ||
bff139b4 DJ |
1744 | f2fs_release_decomp_mem(dic, bypass_destroy_callback, true); |
1745 | ||
4c8ff709 CY |
1746 | if (dic->tpages) { |
1747 | for (i = 0; i < dic->cluster_size; i++) { | |
1748 | if (dic->rpages[i]) | |
1749 | continue; | |
8908e753 CY |
1750 | if (!dic->tpages[i]) |
1751 | continue; | |
5e6bbde9 | 1752 | f2fs_compress_free_page(dic->tpages[i]); |
4c8ff709 | 1753 | } |
31083031 | 1754 | page_array_free(dic->inode, dic->tpages, dic->cluster_size); |
4c8ff709 CY |
1755 | } |
1756 | ||
1757 | if (dic->cpages) { | |
1758 | for (i = 0; i < dic->nr_cpages; i++) { | |
1759 | if (!dic->cpages[i]) | |
1760 | continue; | |
5e6bbde9 | 1761 | f2fs_compress_free_page(dic->cpages[i]); |
4c8ff709 | 1762 | } |
31083031 | 1763 | page_array_free(dic->inode, dic->cpages, dic->nr_cpages); |
4c8ff709 CY |
1764 | } |
1765 | ||
31083031 | 1766 | page_array_free(dic->inode, dic->rpages, dic->nr_rpages); |
c68d6c88 | 1767 | kmem_cache_free(dic_entry_slab, dic); |
4c8ff709 CY |
1768 | } |
1769 | ||
bff139b4 | 1770 | static void f2fs_late_free_dic(struct work_struct *work) |
7f59b277 | 1771 | { |
bff139b4 DJ |
1772 | struct decompress_io_ctx *dic = |
1773 | container_of(work, struct decompress_io_ctx, free_work); | |
1774 | ||
1775 | f2fs_free_dic(dic, false); | |
1776 | } | |
1777 | ||
1778 | static void f2fs_put_dic(struct decompress_io_ctx *dic, bool in_task) | |
7f59b277 | 1779 | { |
bff139b4 DJ |
1780 | if (refcount_dec_and_test(&dic->refcnt)) { |
1781 | if (in_task) { | |
1782 | f2fs_free_dic(dic, false); | |
1783 | } else { | |
1784 | INIT_WORK(&dic->free_work, f2fs_late_free_dic); | |
1785 | queue_work(F2FS_I_SB(dic->inode)->post_read_wq, | |
1786 | &dic->free_work); | |
1787 | } | |
1788 | } | |
7f59b277 EB |
1789 | } |
1790 | ||
98dc08ba | 1791 | static void f2fs_verify_cluster(struct work_struct *work) |
4c8ff709 | 1792 | { |
98dc08ba EB |
1793 | struct decompress_io_ctx *dic = |
1794 | container_of(work, struct decompress_io_ctx, verity_work); | |
4c8ff709 CY |
1795 | int i; |
1796 | ||
98dc08ba | 1797 | /* Verify, update, and unlock the decompressed pages. */ |
7f59b277 EB |
1798 | for (i = 0; i < dic->cluster_size; i++) { |
1799 | struct page *rpage = dic->rpages[i]; | |
4c8ff709 CY |
1800 | |
1801 | if (!rpage) | |
1802 | continue; | |
1803 | ||
98dc08ba | 1804 | if (fsverity_verify_page(rpage)) |
23c51bed | 1805 | SetPageUptodate(rpage); |
98dc08ba EB |
1806 | else |
1807 | ClearPageUptodate(rpage); | |
4c8ff709 CY |
1808 | unlock_page(rpage); |
1809 | } | |
7f59b277 | 1810 | |
98dc08ba | 1811 | f2fs_put_dic(dic, true); |
7f59b277 EB |
1812 | } |
1813 | ||
1814 | /* | |
1815 | * This is called when a compressed cluster has been decompressed | |
1816 | * (or failed to be read and/or decompressed). | |
1817 | */ | |
bff139b4 DJ |
1818 | void f2fs_decompress_end_io(struct decompress_io_ctx *dic, bool failed, |
1819 | bool in_task) | |
7f59b277 | 1820 | { |
98dc08ba EB |
1821 | int i; |
1822 | ||
7f59b277 EB |
1823 | if (!failed && dic->need_verity) { |
1824 | /* | |
1825 | * Note that to avoid deadlocks, the verity work can't be done | |
1826 | * on the decompression workqueue. This is because verifying | |
1827 | * the data pages can involve reading metadata pages from the | |
1828 | * file, and these metadata pages may be compressed. | |
1829 | */ | |
1830 | INIT_WORK(&dic->verity_work, f2fs_verify_cluster); | |
1831 | fsverity_enqueue_verify_work(&dic->verity_work); | |
98dc08ba EB |
1832 | return; |
1833 | } | |
1834 | ||
1835 | /* Update and unlock the cluster's pagecache pages. */ | |
1836 | for (i = 0; i < dic->cluster_size; i++) { | |
1837 | struct page *rpage = dic->rpages[i]; | |
1838 | ||
1839 | if (!rpage) | |
1840 | continue; | |
1841 | ||
1842 | if (failed) | |
1843 | ClearPageUptodate(rpage); | |
1844 | else | |
1845 | SetPageUptodate(rpage); | |
1846 | unlock_page(rpage); | |
7f59b277 | 1847 | } |
98dc08ba EB |
1848 | |
1849 | /* | |
1850 | * Release the reference to the decompress_io_ctx that was being held | |
1851 | * for I/O completion. | |
1852 | */ | |
1853 | f2fs_put_dic(dic, in_task); | |
7f59b277 EB |
1854 | } |
1855 | ||
1856 | /* | |
1857 | * Put a reference to a compressed page's decompress_io_ctx. | |
1858 | * | |
1859 | * This is called when the page is no longer needed and can be freed. | |
1860 | */ | |
bff139b4 | 1861 | void f2fs_put_page_dic(struct page *page, bool in_task) |
7f59b277 EB |
1862 | { |
1863 | struct decompress_io_ctx *dic = | |
1864 | (struct decompress_io_ctx *)page_private(page); | |
1865 | ||
bff139b4 | 1866 | f2fs_put_dic(dic, in_task); |
4c8ff709 | 1867 | } |
31083031 | 1868 | |
94afd6d6 CY |
1869 | /* |
1870 | * check whether cluster blocks are contiguous, and add extent cache entry | |
1871 | * only if cluster blocks are logically and physically contiguous. | |
1872 | */ | |
4b99ecd3 CY |
1873 | unsigned int f2fs_cluster_blocks_are_contiguous(struct dnode_of_data *dn, |
1874 | unsigned int ofs_in_node) | |
94afd6d6 | 1875 | { |
4b99ecd3 CY |
1876 | bool compressed = data_blkaddr(dn->inode, dn->node_page, |
1877 | ofs_in_node) == COMPRESS_ADDR; | |
94afd6d6 CY |
1878 | int i = compressed ? 1 : 0; |
1879 | block_t first_blkaddr = data_blkaddr(dn->inode, dn->node_page, | |
4b99ecd3 | 1880 | ofs_in_node + i); |
94afd6d6 CY |
1881 | |
1882 | for (i += 1; i < F2FS_I(dn->inode)->i_cluster_size; i++) { | |
1883 | block_t blkaddr = data_blkaddr(dn->inode, dn->node_page, | |
4b99ecd3 | 1884 | ofs_in_node + i); |
94afd6d6 CY |
1885 | |
1886 | if (!__is_valid_data_blkaddr(blkaddr)) | |
1887 | break; | |
1888 | if (first_blkaddr + i - (compressed ? 1 : 0) != blkaddr) | |
1889 | return 0; | |
1890 | } | |
1891 | ||
1892 | return compressed ? i - 1 : i; | |
1893 | } | |
1894 | ||
6ce19aff | 1895 | const struct address_space_operations f2fs_compress_aops = { |
c26cd045 | 1896 | .release_folio = f2fs_release_folio, |
91503996 | 1897 | .invalidate_folio = f2fs_invalidate_folio, |
f35474ec | 1898 | .migrate_folio = filemap_migrate_folio, |
6ce19aff CY |
1899 | }; |
1900 | ||
1901 | struct address_space *COMPRESS_MAPPING(struct f2fs_sb_info *sbi) | |
1902 | { | |
1903 | return sbi->compress_inode->i_mapping; | |
1904 | } | |
1905 | ||
1906 | void f2fs_invalidate_compress_page(struct f2fs_sb_info *sbi, block_t blkaddr) | |
1907 | { | |
1908 | if (!sbi->compress_inode) | |
1909 | return; | |
1910 | invalidate_mapping_pages(COMPRESS_MAPPING(sbi), blkaddr, blkaddr); | |
1911 | } | |
1912 | ||
1913 | void f2fs_cache_compressed_page(struct f2fs_sb_info *sbi, struct page *page, | |
1914 | nid_t ino, block_t blkaddr) | |
1915 | { | |
1916 | struct page *cpage; | |
1917 | int ret; | |
1918 | ||
1919 | if (!test_opt(sbi, COMPRESS_CACHE)) | |
1920 | return; | |
1921 | ||
1922 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE_READ)) | |
1923 | return; | |
1924 | ||
1925 | if (!f2fs_available_free_memory(sbi, COMPRESS_PAGE)) | |
1926 | return; | |
1927 | ||
1928 | cpage = find_get_page(COMPRESS_MAPPING(sbi), blkaddr); | |
1929 | if (cpage) { | |
1930 | f2fs_put_page(cpage, 0); | |
1931 | return; | |
1932 | } | |
1933 | ||
1934 | cpage = alloc_page(__GFP_NOWARN | __GFP_IO); | |
1935 | if (!cpage) | |
1936 | return; | |
1937 | ||
1938 | ret = add_to_page_cache_lru(cpage, COMPRESS_MAPPING(sbi), | |
1939 | blkaddr, GFP_NOFS); | |
1940 | if (ret) { | |
1941 | f2fs_put_page(cpage, 0); | |
1942 | return; | |
1943 | } | |
1944 | ||
1945 | set_page_private_data(cpage, ino); | |
1946 | ||
6ce19aff CY |
1947 | memcpy(page_address(cpage), page_address(page), PAGE_SIZE); |
1948 | SetPageUptodate(cpage); | |
6ce19aff CY |
1949 | f2fs_put_page(cpage, 1); |
1950 | } | |
1951 | ||
1952 | bool f2fs_load_compressed_page(struct f2fs_sb_info *sbi, struct page *page, | |
1953 | block_t blkaddr) | |
1954 | { | |
1955 | struct page *cpage; | |
1956 | bool hitted = false; | |
1957 | ||
1958 | if (!test_opt(sbi, COMPRESS_CACHE)) | |
1959 | return false; | |
1960 | ||
1961 | cpage = f2fs_pagecache_get_page(COMPRESS_MAPPING(sbi), | |
1962 | blkaddr, FGP_LOCK | FGP_NOWAIT, GFP_NOFS); | |
1963 | if (cpage) { | |
1964 | if (PageUptodate(cpage)) { | |
1965 | atomic_inc(&sbi->compress_page_hit); | |
1966 | memcpy(page_address(page), | |
1967 | page_address(cpage), PAGE_SIZE); | |
1968 | hitted = true; | |
1969 | } | |
1970 | f2fs_put_page(cpage, 1); | |
1971 | } | |
1972 | ||
1973 | return hitted; | |
1974 | } | |
1975 | ||
1976 | void f2fs_invalidate_compress_pages(struct f2fs_sb_info *sbi, nid_t ino) | |
1977 | { | |
173cdf2c | 1978 | struct address_space *mapping = COMPRESS_MAPPING(sbi); |
bbfe4f66 | 1979 | struct folio_batch fbatch; |
6ce19aff CY |
1980 | pgoff_t index = 0; |
1981 | pgoff_t end = MAX_BLKADDR(sbi); | |
1982 | ||
1983 | if (!mapping->nrpages) | |
1984 | return; | |
1985 | ||
bbfe4f66 | 1986 | folio_batch_init(&fbatch); |
6ce19aff CY |
1987 | |
1988 | do { | |
bbfe4f66 | 1989 | unsigned int nr, i; |
6ce19aff | 1990 | |
bbfe4f66 MWO |
1991 | nr = filemap_get_folios(mapping, &index, end - 1, &fbatch); |
1992 | if (!nr) | |
6ce19aff CY |
1993 | break; |
1994 | ||
bbfe4f66 MWO |
1995 | for (i = 0; i < nr; i++) { |
1996 | struct folio *folio = fbatch.folios[i]; | |
6ce19aff | 1997 | |
bbfe4f66 MWO |
1998 | folio_lock(folio); |
1999 | if (folio->mapping != mapping) { | |
2000 | folio_unlock(folio); | |
6ce19aff CY |
2001 | continue; |
2002 | } | |
2003 | ||
bbfe4f66 MWO |
2004 | if (ino != get_page_private_data(&folio->page)) { |
2005 | folio_unlock(folio); | |
6ce19aff CY |
2006 | continue; |
2007 | } | |
2008 | ||
af7628d6 | 2009 | generic_error_remove_folio(mapping, folio); |
bbfe4f66 | 2010 | folio_unlock(folio); |
6ce19aff | 2011 | } |
bbfe4f66 | 2012 | folio_batch_release(&fbatch); |
6ce19aff CY |
2013 | cond_resched(); |
2014 | } while (index < end); | |
2015 | } | |
2016 | ||
2017 | int f2fs_init_compress_inode(struct f2fs_sb_info *sbi) | |
2018 | { | |
2019 | struct inode *inode; | |
2020 | ||
2021 | if (!test_opt(sbi, COMPRESS_CACHE)) | |
2022 | return 0; | |
2023 | ||
2024 | inode = f2fs_iget(sbi->sb, F2FS_COMPRESS_INO(sbi)); | |
2025 | if (IS_ERR(inode)) | |
2026 | return PTR_ERR(inode); | |
2027 | sbi->compress_inode = inode; | |
2028 | ||
2029 | sbi->compress_percent = COMPRESS_PERCENT; | |
2030 | sbi->compress_watermark = COMPRESS_WATERMARK; | |
2031 | ||
2032 | atomic_set(&sbi->compress_page_hit, 0); | |
2033 | ||
2034 | return 0; | |
2035 | } | |
2036 | ||
2037 | void f2fs_destroy_compress_inode(struct f2fs_sb_info *sbi) | |
2038 | { | |
2039 | if (!sbi->compress_inode) | |
2040 | return; | |
2041 | iput(sbi->compress_inode); | |
2042 | sbi->compress_inode = NULL; | |
2043 | } | |
2044 | ||
31083031 CY |
2045 | int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) |
2046 | { | |
2047 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
e0d4e8ac | 2048 | char slab_name[35]; |
31083031 | 2049 | |
29be7ec3 CY |
2050 | if (!f2fs_sb_has_compression(sbi)) |
2051 | return 0; | |
2052 | ||
31083031 CY |
2053 | sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), MINOR(dev)); |
2054 | ||
2055 | sbi->page_array_slab_size = sizeof(struct page *) << | |
2056 | F2FS_OPTION(sbi).compress_log_size; | |
2057 | ||
2058 | sbi->page_array_slab = f2fs_kmem_cache_create(slab_name, | |
2059 | sbi->page_array_slab_size); | |
870af777 | 2060 | return sbi->page_array_slab ? 0 : -ENOMEM; |
31083031 CY |
2061 | } |
2062 | ||
2063 | void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) | |
2064 | { | |
2065 | kmem_cache_destroy(sbi->page_array_slab); | |
2066 | } | |
c68d6c88 | 2067 | |
870af777 | 2068 | int __init f2fs_init_compress_cache(void) |
c68d6c88 CY |
2069 | { |
2070 | cic_entry_slab = f2fs_kmem_cache_create("f2fs_cic_entry", | |
2071 | sizeof(struct compress_io_ctx)); | |
2072 | if (!cic_entry_slab) | |
2073 | return -ENOMEM; | |
c68d6c88 CY |
2074 | dic_entry_slab = f2fs_kmem_cache_create("f2fs_dic_entry", |
2075 | sizeof(struct decompress_io_ctx)); | |
2076 | if (!dic_entry_slab) | |
c68d6c88 CY |
2077 | goto free_cic; |
2078 | return 0; | |
2079 | free_cic: | |
870af777 | 2080 | kmem_cache_destroy(cic_entry_slab); |
c68d6c88 CY |
2081 | return -ENOMEM; |
2082 | } | |
2083 | ||
2084 | void f2fs_destroy_compress_cache(void) | |
2085 | { | |
870af777 YL |
2086 | kmem_cache_destroy(dic_entry_slab); |
2087 | kmem_cache_destroy(cic_entry_slab); | |
c68d6c88 | 2088 | } |