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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> | |
10 | #include <linux/writeback.h> | |
11 | #include <linux/backing-dev.h> | |
12 | #include <linux/lzo.h> | |
13 | #include <linux/lz4.h> | |
50cfa66f | 14 | #include <linux/zstd.h> |
4c8ff709 CY |
15 | |
16 | #include "f2fs.h" | |
17 | #include "node.h" | |
18 | #include <trace/events/f2fs.h> | |
19 | ||
c68d6c88 CY |
20 | static struct kmem_cache *cic_entry_slab; |
21 | static struct kmem_cache *dic_entry_slab; | |
22 | ||
31083031 CY |
23 | static void *page_array_alloc(struct inode *inode, int nr) |
24 | { | |
25 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
26 | unsigned int size = sizeof(struct page *) * nr; | |
27 | ||
28 | if (likely(size <= sbi->page_array_slab_size)) | |
29 | return kmem_cache_zalloc(sbi->page_array_slab, GFP_NOFS); | |
30 | return f2fs_kzalloc(sbi, size, GFP_NOFS); | |
31 | } | |
32 | ||
33 | static void page_array_free(struct inode *inode, void *pages, int nr) | |
34 | { | |
35 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
36 | unsigned int size = sizeof(struct page *) * nr; | |
37 | ||
38 | if (!pages) | |
39 | return; | |
40 | ||
41 | if (likely(size <= sbi->page_array_slab_size)) | |
42 | kmem_cache_free(sbi->page_array_slab, pages); | |
43 | else | |
44 | kfree(pages); | |
45 | } | |
46 | ||
4c8ff709 CY |
47 | struct f2fs_compress_ops { |
48 | int (*init_compress_ctx)(struct compress_ctx *cc); | |
49 | void (*destroy_compress_ctx)(struct compress_ctx *cc); | |
50 | int (*compress_pages)(struct compress_ctx *cc); | |
23b1faaa CY |
51 | int (*init_decompress_ctx)(struct decompress_io_ctx *dic); |
52 | void (*destroy_decompress_ctx)(struct decompress_io_ctx *dic); | |
4c8ff709 CY |
53 | int (*decompress_pages)(struct decompress_io_ctx *dic); |
54 | }; | |
55 | ||
56 | static unsigned int offset_in_cluster(struct compress_ctx *cc, pgoff_t index) | |
57 | { | |
58 | return index & (cc->cluster_size - 1); | |
59 | } | |
60 | ||
61 | static pgoff_t cluster_idx(struct compress_ctx *cc, pgoff_t index) | |
62 | { | |
63 | return index >> cc->log_cluster_size; | |
64 | } | |
65 | ||
66 | static pgoff_t start_idx_of_cluster(struct compress_ctx *cc) | |
67 | { | |
68 | return cc->cluster_idx << cc->log_cluster_size; | |
69 | } | |
70 | ||
71 | bool f2fs_is_compressed_page(struct page *page) | |
72 | { | |
73 | if (!PagePrivate(page)) | |
74 | return false; | |
75 | if (!page_private(page)) | |
76 | return false; | |
77 | if (IS_ATOMIC_WRITTEN_PAGE(page) || IS_DUMMY_WRITTEN_PAGE(page)) | |
78 | return false; | |
29b993c7 YC |
79 | /* |
80 | * page->private may be set with pid. | |
81 | * pid_max is enough to check if it is traced. | |
82 | */ | |
83 | if (IS_IO_TRACED_PAGE(page)) | |
84 | return false; | |
85 | ||
4c8ff709 CY |
86 | f2fs_bug_on(F2FS_M_SB(page->mapping), |
87 | *((u32 *)page_private(page)) != F2FS_COMPRESSED_PAGE_MAGIC); | |
88 | return true; | |
89 | } | |
90 | ||
91 | static void f2fs_set_compressed_page(struct page *page, | |
887347a0 | 92 | struct inode *inode, pgoff_t index, void *data) |
4c8ff709 CY |
93 | { |
94 | SetPagePrivate(page); | |
95 | set_page_private(page, (unsigned long)data); | |
96 | ||
97 | /* i_crypto_info and iv index */ | |
98 | page->index = index; | |
99 | page->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 | ||
154 | void f2fs_destroy_compress_ctx(struct compress_ctx *cc) | |
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; | |
160 | cc->cluster_idx = NULL_CLUSTER; | |
161 | } | |
162 | ||
163 | void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page) | |
164 | { | |
165 | unsigned int cluster_ofs; | |
166 | ||
167 | if (!f2fs_cluster_can_merge_page(cc, page->index)) | |
168 | f2fs_bug_on(F2FS_I_SB(cc->inode), 1); | |
169 | ||
170 | cluster_ofs = offset_in_cluster(cc, page->index); | |
171 | cc->rpages[cluster_ofs] = page; | |
172 | cc->nr_rpages++; | |
173 | cc->cluster_idx = cluster_idx(cc, page->index); | |
174 | } | |
175 | ||
176 | #ifdef CONFIG_F2FS_FS_LZO | |
177 | static int lzo_init_compress_ctx(struct compress_ctx *cc) | |
178 | { | |
179 | cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
180 | LZO1X_MEM_COMPRESS, GFP_NOFS); | |
181 | if (!cc->private) | |
182 | return -ENOMEM; | |
183 | ||
184 | cc->clen = lzo1x_worst_compress(PAGE_SIZE << cc->log_cluster_size); | |
185 | return 0; | |
186 | } | |
187 | ||
188 | static void lzo_destroy_compress_ctx(struct compress_ctx *cc) | |
189 | { | |
190 | kvfree(cc->private); | |
191 | cc->private = NULL; | |
192 | } | |
193 | ||
194 | static int lzo_compress_pages(struct compress_ctx *cc) | |
195 | { | |
196 | int ret; | |
197 | ||
198 | ret = lzo1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, | |
199 | &cc->clen, cc->private); | |
200 | if (ret != LZO_E_OK) { | |
201 | printk_ratelimited("%sF2FS-fs (%s): lzo compress failed, ret:%d\n", | |
202 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, ret); | |
203 | return -EIO; | |
204 | } | |
205 | return 0; | |
206 | } | |
207 | ||
208 | static int lzo_decompress_pages(struct decompress_io_ctx *dic) | |
209 | { | |
210 | int ret; | |
211 | ||
212 | ret = lzo1x_decompress_safe(dic->cbuf->cdata, dic->clen, | |
213 | dic->rbuf, &dic->rlen); | |
214 | if (ret != LZO_E_OK) { | |
215 | printk_ratelimited("%sF2FS-fs (%s): lzo decompress failed, ret:%d\n", | |
216 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, ret); | |
217 | return -EIO; | |
218 | } | |
219 | ||
220 | if (dic->rlen != PAGE_SIZE << dic->log_cluster_size) { | |
221 | printk_ratelimited("%sF2FS-fs (%s): lzo invalid rlen:%zu, " | |
222 | "expected:%lu\n", KERN_ERR, | |
223 | F2FS_I_SB(dic->inode)->sb->s_id, | |
224 | dic->rlen, | |
225 | PAGE_SIZE << dic->log_cluster_size); | |
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 | { | |
242 | cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
243 | LZ4_MEM_COMPRESS, GFP_NOFS); | |
244 | if (!cc->private) | |
245 | return -ENOMEM; | |
246 | ||
f6644143 CY |
247 | /* |
248 | * we do not change cc->clen to LZ4_compressBound(inputsize) to | |
249 | * adapt worst compress case, because lz4 compressor can handle | |
250 | * output budget properly. | |
251 | */ | |
252 | cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
4c8ff709 CY |
253 | return 0; |
254 | } | |
255 | ||
256 | static void lz4_destroy_compress_ctx(struct compress_ctx *cc) | |
257 | { | |
258 | kvfree(cc->private); | |
259 | cc->private = NULL; | |
260 | } | |
261 | ||
262 | static int lz4_compress_pages(struct compress_ctx *cc) | |
263 | { | |
264 | int len; | |
265 | ||
266 | len = LZ4_compress_default(cc->rbuf, cc->cbuf->cdata, cc->rlen, | |
267 | cc->clen, cc->private); | |
f6644143 CY |
268 | if (!len) |
269 | return -EAGAIN; | |
270 | ||
4c8ff709 CY |
271 | cc->clen = len; |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int lz4_decompress_pages(struct decompress_io_ctx *dic) | |
276 | { | |
277 | int ret; | |
278 | ||
279 | ret = LZ4_decompress_safe(dic->cbuf->cdata, dic->rbuf, | |
280 | dic->clen, dic->rlen); | |
281 | if (ret < 0) { | |
282 | printk_ratelimited("%sF2FS-fs (%s): lz4 decompress failed, ret:%d\n", | |
283 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, ret); | |
284 | return -EIO; | |
285 | } | |
286 | ||
287 | if (ret != PAGE_SIZE << dic->log_cluster_size) { | |
288 | printk_ratelimited("%sF2FS-fs (%s): lz4 invalid rlen:%zu, " | |
289 | "expected:%lu\n", KERN_ERR, | |
290 | F2FS_I_SB(dic->inode)->sb->s_id, | |
291 | dic->rlen, | |
292 | PAGE_SIZE << dic->log_cluster_size); | |
293 | return -EIO; | |
294 | } | |
295 | return 0; | |
296 | } | |
297 | ||
298 | static const struct f2fs_compress_ops f2fs_lz4_ops = { | |
299 | .init_compress_ctx = lz4_init_compress_ctx, | |
300 | .destroy_compress_ctx = lz4_destroy_compress_ctx, | |
301 | .compress_pages = lz4_compress_pages, | |
302 | .decompress_pages = lz4_decompress_pages, | |
303 | }; | |
304 | #endif | |
305 | ||
50cfa66f CY |
306 | #ifdef CONFIG_F2FS_FS_ZSTD |
307 | #define F2FS_ZSTD_DEFAULT_CLEVEL 1 | |
308 | ||
309 | static int zstd_init_compress_ctx(struct compress_ctx *cc) | |
310 | { | |
311 | ZSTD_parameters params; | |
312 | ZSTD_CStream *stream; | |
313 | void *workspace; | |
314 | unsigned int workspace_size; | |
315 | ||
316 | params = ZSTD_getParams(F2FS_ZSTD_DEFAULT_CLEVEL, cc->rlen, 0); | |
317 | workspace_size = ZSTD_CStreamWorkspaceBound(params.cParams); | |
318 | ||
319 | workspace = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
320 | workspace_size, GFP_NOFS); | |
321 | if (!workspace) | |
322 | return -ENOMEM; | |
323 | ||
324 | stream = ZSTD_initCStream(params, 0, workspace, workspace_size); | |
325 | if (!stream) { | |
326 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initCStream failed\n", | |
327 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, | |
328 | __func__); | |
329 | kvfree(workspace); | |
330 | return -EIO; | |
331 | } | |
332 | ||
333 | cc->private = workspace; | |
334 | cc->private2 = stream; | |
335 | ||
336 | cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
337 | return 0; | |
338 | } | |
339 | ||
340 | static void zstd_destroy_compress_ctx(struct compress_ctx *cc) | |
341 | { | |
342 | kvfree(cc->private); | |
343 | cc->private = NULL; | |
344 | cc->private2 = NULL; | |
345 | } | |
346 | ||
347 | static int zstd_compress_pages(struct compress_ctx *cc) | |
348 | { | |
349 | ZSTD_CStream *stream = cc->private2; | |
350 | ZSTD_inBuffer inbuf; | |
351 | ZSTD_outBuffer outbuf; | |
352 | int src_size = cc->rlen; | |
353 | int dst_size = src_size - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
354 | int ret; | |
355 | ||
356 | inbuf.pos = 0; | |
357 | inbuf.src = cc->rbuf; | |
358 | inbuf.size = src_size; | |
359 | ||
360 | outbuf.pos = 0; | |
361 | outbuf.dst = cc->cbuf->cdata; | |
362 | outbuf.size = dst_size; | |
363 | ||
364 | ret = ZSTD_compressStream(stream, &outbuf, &inbuf); | |
365 | if (ZSTD_isError(ret)) { | |
366 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d\n", | |
367 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, | |
368 | __func__, ZSTD_getErrorCode(ret)); | |
369 | return -EIO; | |
370 | } | |
371 | ||
372 | ret = ZSTD_endStream(stream, &outbuf); | |
373 | if (ZSTD_isError(ret)) { | |
374 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_endStream returned %d\n", | |
375 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, | |
376 | __func__, ZSTD_getErrorCode(ret)); | |
377 | return -EIO; | |
378 | } | |
379 | ||
1454c978 CY |
380 | /* |
381 | * there is compressed data remained in intermediate buffer due to | |
382 | * no more space in cbuf.cdata | |
383 | */ | |
384 | if (ret) | |
385 | return -EAGAIN; | |
386 | ||
50cfa66f CY |
387 | cc->clen = outbuf.pos; |
388 | return 0; | |
389 | } | |
390 | ||
391 | static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic) | |
392 | { | |
393 | ZSTD_DStream *stream; | |
394 | void *workspace; | |
395 | unsigned int workspace_size; | |
0e2b7385 CY |
396 | unsigned int max_window_size = |
397 | MAX_COMPRESS_WINDOW_SIZE(dic->log_cluster_size); | |
50cfa66f | 398 | |
0e2b7385 | 399 | workspace_size = ZSTD_DStreamWorkspaceBound(max_window_size); |
50cfa66f CY |
400 | |
401 | workspace = f2fs_kvmalloc(F2FS_I_SB(dic->inode), | |
402 | workspace_size, GFP_NOFS); | |
403 | if (!workspace) | |
404 | return -ENOMEM; | |
405 | ||
0e2b7385 | 406 | stream = ZSTD_initDStream(max_window_size, workspace, workspace_size); |
50cfa66f CY |
407 | if (!stream) { |
408 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initDStream failed\n", | |
409 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, | |
410 | __func__); | |
411 | kvfree(workspace); | |
412 | return -EIO; | |
413 | } | |
414 | ||
415 | dic->private = workspace; | |
416 | dic->private2 = stream; | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | static void zstd_destroy_decompress_ctx(struct decompress_io_ctx *dic) | |
422 | { | |
423 | kvfree(dic->private); | |
424 | dic->private = NULL; | |
425 | dic->private2 = NULL; | |
426 | } | |
427 | ||
428 | static int zstd_decompress_pages(struct decompress_io_ctx *dic) | |
429 | { | |
430 | ZSTD_DStream *stream = dic->private2; | |
431 | ZSTD_inBuffer inbuf; | |
432 | ZSTD_outBuffer outbuf; | |
433 | int ret; | |
434 | ||
435 | inbuf.pos = 0; | |
436 | inbuf.src = dic->cbuf->cdata; | |
437 | inbuf.size = dic->clen; | |
438 | ||
439 | outbuf.pos = 0; | |
440 | outbuf.dst = dic->rbuf; | |
441 | outbuf.size = dic->rlen; | |
442 | ||
443 | ret = ZSTD_decompressStream(stream, &outbuf, &inbuf); | |
444 | if (ZSTD_isError(ret)) { | |
445 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d\n", | |
446 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, | |
447 | __func__, ZSTD_getErrorCode(ret)); | |
448 | return -EIO; | |
449 | } | |
450 | ||
451 | if (dic->rlen != outbuf.pos) { | |
452 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD invalid rlen:%zu, " | |
453 | "expected:%lu\n", KERN_ERR, | |
454 | F2FS_I_SB(dic->inode)->sb->s_id, | |
455 | __func__, dic->rlen, | |
456 | PAGE_SIZE << dic->log_cluster_size); | |
457 | return -EIO; | |
458 | } | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | static const struct f2fs_compress_ops f2fs_zstd_ops = { | |
464 | .init_compress_ctx = zstd_init_compress_ctx, | |
465 | .destroy_compress_ctx = zstd_destroy_compress_ctx, | |
466 | .compress_pages = zstd_compress_pages, | |
467 | .init_decompress_ctx = zstd_init_decompress_ctx, | |
468 | .destroy_decompress_ctx = zstd_destroy_decompress_ctx, | |
469 | .decompress_pages = zstd_decompress_pages, | |
470 | }; | |
471 | #endif | |
472 | ||
6d92b201 CY |
473 | #ifdef CONFIG_F2FS_FS_LZO |
474 | #ifdef CONFIG_F2FS_FS_LZORLE | |
475 | static int lzorle_compress_pages(struct compress_ctx *cc) | |
476 | { | |
477 | int ret; | |
478 | ||
479 | ret = lzorle1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, | |
480 | &cc->clen, cc->private); | |
481 | if (ret != LZO_E_OK) { | |
482 | printk_ratelimited("%sF2FS-fs (%s): lzo-rle compress failed, ret:%d\n", | |
483 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, ret); | |
484 | return -EIO; | |
485 | } | |
486 | return 0; | |
487 | } | |
488 | ||
489 | static const struct f2fs_compress_ops f2fs_lzorle_ops = { | |
490 | .init_compress_ctx = lzo_init_compress_ctx, | |
491 | .destroy_compress_ctx = lzo_destroy_compress_ctx, | |
492 | .compress_pages = lzorle_compress_pages, | |
493 | .decompress_pages = lzo_decompress_pages, | |
494 | }; | |
495 | #endif | |
496 | #endif | |
497 | ||
4c8ff709 CY |
498 | static const struct f2fs_compress_ops *f2fs_cops[COMPRESS_MAX] = { |
499 | #ifdef CONFIG_F2FS_FS_LZO | |
500 | &f2fs_lzo_ops, | |
501 | #else | |
502 | NULL, | |
503 | #endif | |
504 | #ifdef CONFIG_F2FS_FS_LZ4 | |
505 | &f2fs_lz4_ops, | |
506 | #else | |
507 | NULL, | |
508 | #endif | |
50cfa66f CY |
509 | #ifdef CONFIG_F2FS_FS_ZSTD |
510 | &f2fs_zstd_ops, | |
511 | #else | |
512 | NULL, | |
513 | #endif | |
6d92b201 CY |
514 | #if defined(CONFIG_F2FS_FS_LZO) && defined(CONFIG_F2FS_FS_LZORLE) |
515 | &f2fs_lzorle_ops, | |
516 | #else | |
517 | NULL, | |
518 | #endif | |
4c8ff709 CY |
519 | }; |
520 | ||
521 | bool f2fs_is_compress_backend_ready(struct inode *inode) | |
522 | { | |
523 | if (!f2fs_compressed_file(inode)) | |
524 | return true; | |
525 | return f2fs_cops[F2FS_I(inode)->i_compress_algorithm]; | |
526 | } | |
527 | ||
99bbe307 | 528 | static mempool_t *compress_page_pool; |
5e6bbde9 CY |
529 | static int num_compress_pages = 512; |
530 | module_param(num_compress_pages, uint, 0444); | |
531 | MODULE_PARM_DESC(num_compress_pages, | |
532 | "Number of intermediate compress pages to preallocate"); | |
533 | ||
534 | int f2fs_init_compress_mempool(void) | |
535 | { | |
536 | compress_page_pool = mempool_create_page_pool(num_compress_pages, 0); | |
537 | if (!compress_page_pool) | |
538 | return -ENOMEM; | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | void f2fs_destroy_compress_mempool(void) | |
544 | { | |
545 | mempool_destroy(compress_page_pool); | |
546 | } | |
547 | ||
548 | static struct page *f2fs_compress_alloc_page(void) | |
4c8ff709 CY |
549 | { |
550 | struct page *page; | |
551 | ||
5e6bbde9 | 552 | page = mempool_alloc(compress_page_pool, GFP_NOFS); |
4c8ff709 | 553 | lock_page(page); |
5e6bbde9 | 554 | |
4c8ff709 CY |
555 | return page; |
556 | } | |
557 | ||
5e6bbde9 CY |
558 | static void f2fs_compress_free_page(struct page *page) |
559 | { | |
560 | if (!page) | |
561 | return; | |
562 | set_page_private(page, (unsigned long)NULL); | |
563 | ClearPagePrivate(page); | |
564 | page->mapping = NULL; | |
565 | unlock_page(page); | |
566 | mempool_free(page, compress_page_pool); | |
567 | } | |
568 | ||
6fcaebac DJ |
569 | #define MAX_VMAP_RETRIES 3 |
570 | ||
571 | static void *f2fs_vmap(struct page **pages, unsigned int count) | |
572 | { | |
573 | int i; | |
574 | void *buf = NULL; | |
575 | ||
576 | for (i = 0; i < MAX_VMAP_RETRIES; i++) { | |
577 | buf = vm_map_ram(pages, count, -1); | |
578 | if (buf) | |
579 | break; | |
580 | vm_unmap_aliases(); | |
581 | } | |
582 | return buf; | |
583 | } | |
584 | ||
4c8ff709 CY |
585 | static int f2fs_compress_pages(struct compress_ctx *cc) |
586 | { | |
4c8ff709 CY |
587 | struct f2fs_inode_info *fi = F2FS_I(cc->inode); |
588 | const struct f2fs_compress_ops *cops = | |
589 | f2fs_cops[fi->i_compress_algorithm]; | |
31083031 CY |
590 | unsigned int max_len, new_nr_cpages; |
591 | struct page **new_cpages; | |
b28f047b | 592 | u32 chksum = 0; |
4c8ff709 CY |
593 | int i, ret; |
594 | ||
595 | trace_f2fs_compress_pages_start(cc->inode, cc->cluster_idx, | |
596 | cc->cluster_size, fi->i_compress_algorithm); | |
597 | ||
23b1faaa CY |
598 | if (cops->init_compress_ctx) { |
599 | ret = cops->init_compress_ctx(cc); | |
600 | if (ret) | |
601 | goto out; | |
602 | } | |
4c8ff709 CY |
603 | |
604 | max_len = COMPRESS_HEADER_SIZE + cc->clen; | |
605 | cc->nr_cpages = DIV_ROUND_UP(max_len, PAGE_SIZE); | |
606 | ||
31083031 | 607 | cc->cpages = page_array_alloc(cc->inode, cc->nr_cpages); |
4c8ff709 CY |
608 | if (!cc->cpages) { |
609 | ret = -ENOMEM; | |
610 | goto destroy_compress_ctx; | |
611 | } | |
612 | ||
613 | for (i = 0; i < cc->nr_cpages; i++) { | |
5e6bbde9 | 614 | cc->cpages[i] = f2fs_compress_alloc_page(); |
4c8ff709 CY |
615 | if (!cc->cpages[i]) { |
616 | ret = -ENOMEM; | |
617 | goto out_free_cpages; | |
618 | } | |
619 | } | |
620 | ||
6fcaebac | 621 | cc->rbuf = f2fs_vmap(cc->rpages, cc->cluster_size); |
4c8ff709 CY |
622 | if (!cc->rbuf) { |
623 | ret = -ENOMEM; | |
624 | goto out_free_cpages; | |
625 | } | |
626 | ||
6fcaebac | 627 | cc->cbuf = f2fs_vmap(cc->cpages, cc->nr_cpages); |
4c8ff709 CY |
628 | if (!cc->cbuf) { |
629 | ret = -ENOMEM; | |
630 | goto out_vunmap_rbuf; | |
631 | } | |
632 | ||
633 | ret = cops->compress_pages(cc); | |
634 | if (ret) | |
635 | goto out_vunmap_cbuf; | |
636 | ||
637 | max_len = PAGE_SIZE * (cc->cluster_size - 1) - COMPRESS_HEADER_SIZE; | |
638 | ||
639 | if (cc->clen > max_len) { | |
640 | ret = -EAGAIN; | |
641 | goto out_vunmap_cbuf; | |
642 | } | |
643 | ||
644 | cc->cbuf->clen = cpu_to_le32(cc->clen); | |
4c8ff709 | 645 | |
b28f047b CY |
646 | if (fi->i_compress_flag & 1 << COMPRESS_CHKSUM) |
647 | chksum = f2fs_crc32(F2FS_I_SB(cc->inode), | |
648 | cc->cbuf->cdata, cc->clen); | |
649 | cc->cbuf->chksum = cpu_to_le32(chksum); | |
650 | ||
4c8ff709 CY |
651 | for (i = 0; i < COMPRESS_DATA_RESERVED_SIZE; i++) |
652 | cc->cbuf->reserved[i] = cpu_to_le32(0); | |
653 | ||
31083031 CY |
654 | new_nr_cpages = DIV_ROUND_UP(cc->clen + COMPRESS_HEADER_SIZE, PAGE_SIZE); |
655 | ||
656 | /* Now we're going to cut unnecessary tail pages */ | |
657 | new_cpages = page_array_alloc(cc->inode, new_nr_cpages); | |
658 | if (!new_cpages) { | |
659 | ret = -ENOMEM; | |
660 | goto out_vunmap_cbuf; | |
661 | } | |
7fa6d598 EB |
662 | |
663 | /* zero out any unused part of the last page */ | |
664 | memset(&cc->cbuf->cdata[cc->clen], 0, | |
31083031 CY |
665 | (new_nr_cpages * PAGE_SIZE) - |
666 | (cc->clen + COMPRESS_HEADER_SIZE)); | |
7fa6d598 | 667 | |
6fcaebac DJ |
668 | vm_unmap_ram(cc->cbuf, cc->nr_cpages); |
669 | vm_unmap_ram(cc->rbuf, cc->cluster_size); | |
4c8ff709 | 670 | |
31083031 CY |
671 | for (i = 0; i < cc->nr_cpages; i++) { |
672 | if (i < new_nr_cpages) { | |
673 | new_cpages[i] = cc->cpages[i]; | |
674 | continue; | |
675 | } | |
5e6bbde9 | 676 | f2fs_compress_free_page(cc->cpages[i]); |
4c8ff709 CY |
677 | cc->cpages[i] = NULL; |
678 | } | |
679 | ||
23b1faaa CY |
680 | if (cops->destroy_compress_ctx) |
681 | cops->destroy_compress_ctx(cc); | |
09ff4801 | 682 | |
31083031 CY |
683 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
684 | cc->cpages = new_cpages; | |
685 | cc->nr_cpages = new_nr_cpages; | |
4c8ff709 CY |
686 | |
687 | trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, | |
688 | cc->clen, ret); | |
689 | return 0; | |
690 | ||
691 | out_vunmap_cbuf: | |
6fcaebac | 692 | vm_unmap_ram(cc->cbuf, cc->nr_cpages); |
4c8ff709 | 693 | out_vunmap_rbuf: |
6fcaebac | 694 | vm_unmap_ram(cc->rbuf, cc->cluster_size); |
4c8ff709 CY |
695 | out_free_cpages: |
696 | for (i = 0; i < cc->nr_cpages; i++) { | |
697 | if (cc->cpages[i]) | |
5e6bbde9 | 698 | f2fs_compress_free_page(cc->cpages[i]); |
4c8ff709 | 699 | } |
31083031 | 700 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
4c8ff709 CY |
701 | cc->cpages = NULL; |
702 | destroy_compress_ctx: | |
23b1faaa CY |
703 | if (cops->destroy_compress_ctx) |
704 | cops->destroy_compress_ctx(cc); | |
4c8ff709 CY |
705 | out: |
706 | trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, | |
707 | cc->clen, ret); | |
708 | return ret; | |
709 | } | |
710 | ||
711 | void f2fs_decompress_pages(struct bio *bio, struct page *page, bool verity) | |
712 | { | |
713 | struct decompress_io_ctx *dic = | |
714 | (struct decompress_io_ctx *)page_private(page); | |
715 | struct f2fs_sb_info *sbi = F2FS_I_SB(dic->inode); | |
716 | struct f2fs_inode_info *fi= F2FS_I(dic->inode); | |
717 | const struct f2fs_compress_ops *cops = | |
718 | f2fs_cops[fi->i_compress_algorithm]; | |
719 | int ret; | |
b2f57a8e | 720 | int i; |
4c8ff709 CY |
721 | |
722 | dec_page_count(sbi, F2FS_RD_DATA); | |
723 | ||
724 | if (bio->bi_status || PageError(page)) | |
725 | dic->failed = true; | |
726 | ||
e6c3948d | 727 | if (atomic_dec_return(&dic->pending_pages)) |
4c8ff709 CY |
728 | return; |
729 | ||
730 | trace_f2fs_decompress_pages_start(dic->inode, dic->cluster_idx, | |
731 | dic->cluster_size, fi->i_compress_algorithm); | |
732 | ||
733 | /* submit partial compressed pages */ | |
734 | if (dic->failed) { | |
735 | ret = -EIO; | |
736 | goto out_free_dic; | |
737 | } | |
738 | ||
31083031 | 739 | dic->tpages = page_array_alloc(dic->inode, dic->cluster_size); |
b2f57a8e CY |
740 | if (!dic->tpages) { |
741 | ret = -ENOMEM; | |
742 | goto out_free_dic; | |
743 | } | |
744 | ||
745 | for (i = 0; i < dic->cluster_size; i++) { | |
746 | if (dic->rpages[i]) { | |
747 | dic->tpages[i] = dic->rpages[i]; | |
748 | continue; | |
749 | } | |
750 | ||
751 | dic->tpages[i] = f2fs_compress_alloc_page(); | |
752 | if (!dic->tpages[i]) { | |
753 | ret = -ENOMEM; | |
754 | goto out_free_dic; | |
755 | } | |
756 | } | |
757 | ||
23b1faaa CY |
758 | if (cops->init_decompress_ctx) { |
759 | ret = cops->init_decompress_ctx(dic); | |
760 | if (ret) | |
761 | goto out_free_dic; | |
762 | } | |
763 | ||
6fcaebac | 764 | dic->rbuf = f2fs_vmap(dic->tpages, dic->cluster_size); |
4c8ff709 CY |
765 | if (!dic->rbuf) { |
766 | ret = -ENOMEM; | |
23b1faaa | 767 | goto destroy_decompress_ctx; |
4c8ff709 CY |
768 | } |
769 | ||
6fcaebac | 770 | dic->cbuf = f2fs_vmap(dic->cpages, dic->nr_cpages); |
4c8ff709 CY |
771 | if (!dic->cbuf) { |
772 | ret = -ENOMEM; | |
773 | goto out_vunmap_rbuf; | |
774 | } | |
775 | ||
776 | dic->clen = le32_to_cpu(dic->cbuf->clen); | |
777 | dic->rlen = PAGE_SIZE << dic->log_cluster_size; | |
778 | ||
779 | if (dic->clen > PAGE_SIZE * dic->nr_cpages - COMPRESS_HEADER_SIZE) { | |
780 | ret = -EFSCORRUPTED; | |
781 | goto out_vunmap_cbuf; | |
782 | } | |
783 | ||
784 | ret = cops->decompress_pages(dic); | |
785 | ||
75e91c88 | 786 | if (!ret && (fi->i_compress_flag & 1 << COMPRESS_CHKSUM)) { |
b28f047b CY |
787 | u32 provided = le32_to_cpu(dic->cbuf->chksum); |
788 | u32 calculated = f2fs_crc32(sbi, dic->cbuf->cdata, dic->clen); | |
789 | ||
790 | if (provided != calculated) { | |
791 | if (!is_inode_flag_set(dic->inode, FI_COMPRESS_CORRUPT)) { | |
792 | set_inode_flag(dic->inode, FI_COMPRESS_CORRUPT); | |
793 | printk_ratelimited( | |
794 | "%sF2FS-fs (%s): checksum invalid, nid = %lu, %x vs %x", | |
795 | KERN_INFO, sbi->sb->s_id, dic->inode->i_ino, | |
796 | provided, calculated); | |
797 | } | |
798 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
b28f047b CY |
799 | } |
800 | } | |
801 | ||
4c8ff709 | 802 | out_vunmap_cbuf: |
6fcaebac | 803 | vm_unmap_ram(dic->cbuf, dic->nr_cpages); |
4c8ff709 | 804 | out_vunmap_rbuf: |
6fcaebac | 805 | vm_unmap_ram(dic->rbuf, dic->cluster_size); |
23b1faaa CY |
806 | destroy_decompress_ctx: |
807 | if (cops->destroy_decompress_ctx) | |
808 | cops->destroy_decompress_ctx(dic); | |
4c8ff709 CY |
809 | out_free_dic: |
810 | if (!verity) | |
811 | f2fs_decompress_end_io(dic->rpages, dic->cluster_size, | |
812 | ret, false); | |
813 | ||
814 | trace_f2fs_decompress_pages_end(dic->inode, dic->cluster_idx, | |
815 | dic->clen, ret); | |
816 | if (!verity) | |
817 | f2fs_free_dic(dic); | |
818 | } | |
819 | ||
820 | static bool is_page_in_cluster(struct compress_ctx *cc, pgoff_t index) | |
821 | { | |
822 | if (cc->cluster_idx == NULL_CLUSTER) | |
823 | return true; | |
824 | return cc->cluster_idx == cluster_idx(cc, index); | |
825 | } | |
826 | ||
827 | bool f2fs_cluster_is_empty(struct compress_ctx *cc) | |
828 | { | |
829 | return cc->nr_rpages == 0; | |
830 | } | |
831 | ||
832 | static bool f2fs_cluster_is_full(struct compress_ctx *cc) | |
833 | { | |
834 | return cc->cluster_size == cc->nr_rpages; | |
835 | } | |
836 | ||
837 | bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index) | |
838 | { | |
839 | if (f2fs_cluster_is_empty(cc)) | |
840 | return true; | |
841 | return is_page_in_cluster(cc, index); | |
842 | } | |
843 | ||
844 | static bool __cluster_may_compress(struct compress_ctx *cc) | |
845 | { | |
846 | struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); | |
847 | loff_t i_size = i_size_read(cc->inode); | |
848 | unsigned nr_pages = DIV_ROUND_UP(i_size, PAGE_SIZE); | |
849 | int i; | |
850 | ||
851 | for (i = 0; i < cc->cluster_size; i++) { | |
852 | struct page *page = cc->rpages[i]; | |
853 | ||
854 | f2fs_bug_on(sbi, !page); | |
855 | ||
856 | if (unlikely(f2fs_cp_error(sbi))) | |
857 | return false; | |
858 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
859 | return false; | |
860 | ||
861 | /* beyond EOF */ | |
862 | if (page->index >= nr_pages) | |
863 | return false; | |
864 | } | |
865 | return true; | |
866 | } | |
867 | ||
1a67cbe1 | 868 | static int __f2fs_cluster_blocks(struct compress_ctx *cc, bool compr) |
4c8ff709 CY |
869 | { |
870 | struct dnode_of_data dn; | |
871 | int ret; | |
872 | ||
873 | set_new_dnode(&dn, cc->inode, NULL, NULL, 0); | |
874 | ret = f2fs_get_dnode_of_data(&dn, start_idx_of_cluster(cc), | |
875 | LOOKUP_NODE); | |
876 | if (ret) { | |
877 | if (ret == -ENOENT) | |
878 | ret = 0; | |
879 | goto fail; | |
880 | } | |
881 | ||
882 | if (dn.data_blkaddr == COMPRESS_ADDR) { | |
883 | int i; | |
884 | ||
885 | ret = 1; | |
886 | for (i = 1; i < cc->cluster_size; i++) { | |
887 | block_t blkaddr; | |
888 | ||
a2ced1ce | 889 | blkaddr = data_blkaddr(dn.inode, |
4c8ff709 | 890 | dn.node_page, dn.ofs_in_node + i); |
1a67cbe1 CY |
891 | if (compr) { |
892 | if (__is_valid_data_blkaddr(blkaddr)) | |
893 | ret++; | |
894 | } else { | |
895 | if (blkaddr != NULL_ADDR) | |
896 | ret++; | |
897 | } | |
4c8ff709 CY |
898 | } |
899 | } | |
900 | fail: | |
901 | f2fs_put_dnode(&dn); | |
902 | return ret; | |
903 | } | |
904 | ||
1a67cbe1 CY |
905 | /* return # of compressed blocks in compressed cluster */ |
906 | static int f2fs_compressed_blocks(struct compress_ctx *cc) | |
907 | { | |
908 | return __f2fs_cluster_blocks(cc, true); | |
909 | } | |
910 | ||
911 | /* return # of valid blocks in compressed cluster */ | |
d078319d | 912 | static int f2fs_cluster_blocks(struct compress_ctx *cc) |
1a67cbe1 CY |
913 | { |
914 | return __f2fs_cluster_blocks(cc, false); | |
915 | } | |
916 | ||
4c8ff709 CY |
917 | int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index) |
918 | { | |
919 | struct compress_ctx cc = { | |
920 | .inode = inode, | |
921 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
922 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
923 | .cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size, | |
924 | }; | |
925 | ||
d078319d | 926 | return f2fs_cluster_blocks(&cc); |
4c8ff709 CY |
927 | } |
928 | ||
929 | static bool cluster_may_compress(struct compress_ctx *cc) | |
930 | { | |
602a16d5 | 931 | if (!f2fs_need_compress_data(cc->inode)) |
4c8ff709 CY |
932 | return false; |
933 | if (f2fs_is_atomic_file(cc->inode)) | |
934 | return false; | |
935 | if (f2fs_is_mmap_file(cc->inode)) | |
936 | return false; | |
937 | if (!f2fs_cluster_is_full(cc)) | |
938 | return false; | |
dc35d73a CY |
939 | if (unlikely(f2fs_cp_error(F2FS_I_SB(cc->inode)))) |
940 | return false; | |
4c8ff709 CY |
941 | return __cluster_may_compress(cc); |
942 | } | |
943 | ||
944 | static void set_cluster_writeback(struct compress_ctx *cc) | |
945 | { | |
946 | int i; | |
947 | ||
948 | for (i = 0; i < cc->cluster_size; i++) { | |
949 | if (cc->rpages[i]) | |
950 | set_page_writeback(cc->rpages[i]); | |
951 | } | |
952 | } | |
953 | ||
954 | static void set_cluster_dirty(struct compress_ctx *cc) | |
955 | { | |
956 | int i; | |
957 | ||
958 | for (i = 0; i < cc->cluster_size; i++) | |
959 | if (cc->rpages[i]) | |
960 | set_page_dirty(cc->rpages[i]); | |
961 | } | |
962 | ||
963 | static int prepare_compress_overwrite(struct compress_ctx *cc, | |
964 | struct page **pagep, pgoff_t index, void **fsdata) | |
965 | { | |
966 | struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); | |
967 | struct address_space *mapping = cc->inode->i_mapping; | |
968 | struct page *page; | |
969 | struct dnode_of_data dn; | |
970 | sector_t last_block_in_bio; | |
971 | unsigned fgp_flag = FGP_LOCK | FGP_WRITE | FGP_CREAT; | |
972 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
973 | int i, ret; | |
974 | bool prealloc; | |
975 | ||
976 | retry: | |
d078319d | 977 | ret = f2fs_cluster_blocks(cc); |
4c8ff709 CY |
978 | if (ret <= 0) |
979 | return ret; | |
980 | ||
981 | /* compressed case */ | |
982 | prealloc = (ret < cc->cluster_size); | |
983 | ||
984 | ret = f2fs_init_compress_ctx(cc); | |
985 | if (ret) | |
986 | return ret; | |
987 | ||
988 | /* keep page reference to avoid page reclaim */ | |
989 | for (i = 0; i < cc->cluster_size; i++) { | |
990 | page = f2fs_pagecache_get_page(mapping, start_idx + i, | |
991 | fgp_flag, GFP_NOFS); | |
992 | if (!page) { | |
993 | ret = -ENOMEM; | |
994 | goto unlock_pages; | |
995 | } | |
996 | ||
997 | if (PageUptodate(page)) | |
d5b49fed | 998 | f2fs_put_page(page, 1); |
4c8ff709 CY |
999 | else |
1000 | f2fs_compress_ctx_add_page(cc, page); | |
1001 | } | |
1002 | ||
1003 | if (!f2fs_cluster_is_empty(cc)) { | |
1004 | struct bio *bio = NULL; | |
1005 | ||
1006 | ret = f2fs_read_multi_pages(cc, &bio, cc->cluster_size, | |
0683728a | 1007 | &last_block_in_bio, false, true); |
d5b49fed | 1008 | f2fs_put_rpages(cc); |
4c8ff709 CY |
1009 | f2fs_destroy_compress_ctx(cc); |
1010 | if (ret) | |
d5b49fed | 1011 | goto out; |
4c8ff709 CY |
1012 | if (bio) |
1013 | f2fs_submit_bio(sbi, bio, DATA); | |
1014 | ||
1015 | ret = f2fs_init_compress_ctx(cc); | |
1016 | if (ret) | |
d5b49fed | 1017 | goto out; |
4c8ff709 CY |
1018 | } |
1019 | ||
1020 | for (i = 0; i < cc->cluster_size; i++) { | |
1021 | f2fs_bug_on(sbi, cc->rpages[i]); | |
1022 | ||
1023 | page = find_lock_page(mapping, start_idx + i); | |
d5b49fed CY |
1024 | if (!page) { |
1025 | /* page can be truncated */ | |
1026 | goto release_and_retry; | |
1027 | } | |
4c8ff709 CY |
1028 | |
1029 | f2fs_wait_on_page_writeback(page, DATA, true, true); | |
4c8ff709 | 1030 | f2fs_compress_ctx_add_page(cc, page); |
4c8ff709 CY |
1031 | |
1032 | if (!PageUptodate(page)) { | |
d5b49fed CY |
1033 | release_and_retry: |
1034 | f2fs_put_rpages(cc); | |
4c8ff709 | 1035 | f2fs_unlock_rpages(cc, i + 1); |
4c8ff709 CY |
1036 | f2fs_destroy_compress_ctx(cc); |
1037 | goto retry; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | if (prealloc) { | |
0ef81833 | 1042 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); |
4c8ff709 CY |
1043 | |
1044 | set_new_dnode(&dn, cc->inode, NULL, NULL, 0); | |
1045 | ||
1046 | for (i = cc->cluster_size - 1; i > 0; i--) { | |
1047 | ret = f2fs_get_block(&dn, start_idx + i); | |
1048 | if (ret) { | |
1049 | i = cc->cluster_size; | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | if (dn.data_blkaddr != NEW_ADDR) | |
1054 | break; | |
1055 | } | |
1056 | ||
0ef81833 | 1057 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); |
4c8ff709 CY |
1058 | } |
1059 | ||
1060 | if (likely(!ret)) { | |
1061 | *fsdata = cc->rpages; | |
1062 | *pagep = cc->rpages[offset_in_cluster(cc, index)]; | |
1063 | return cc->cluster_size; | |
1064 | } | |
1065 | ||
1066 | unlock_pages: | |
d5b49fed | 1067 | f2fs_put_rpages(cc); |
4c8ff709 | 1068 | f2fs_unlock_rpages(cc, i); |
4c8ff709 | 1069 | f2fs_destroy_compress_ctx(cc); |
d5b49fed | 1070 | out: |
4c8ff709 CY |
1071 | return ret; |
1072 | } | |
1073 | ||
1074 | int f2fs_prepare_compress_overwrite(struct inode *inode, | |
1075 | struct page **pagep, pgoff_t index, void **fsdata) | |
1076 | { | |
1077 | struct compress_ctx cc = { | |
1078 | .inode = inode, | |
1079 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
1080 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
1081 | .cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size, | |
1082 | .rpages = NULL, | |
1083 | .nr_rpages = 0, | |
1084 | }; | |
1085 | ||
1086 | return prepare_compress_overwrite(&cc, pagep, index, fsdata); | |
1087 | } | |
1088 | ||
1089 | bool f2fs_compress_write_end(struct inode *inode, void *fsdata, | |
1090 | pgoff_t index, unsigned copied) | |
1091 | ||
1092 | { | |
1093 | struct compress_ctx cc = { | |
31083031 | 1094 | .inode = inode, |
4c8ff709 CY |
1095 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, |
1096 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
1097 | .rpages = fsdata, | |
1098 | }; | |
1099 | bool first_index = (index == cc.rpages[0]->index); | |
1100 | ||
1101 | if (copied) | |
1102 | set_cluster_dirty(&cc); | |
1103 | ||
1104 | f2fs_put_rpages_wbc(&cc, NULL, false, 1); | |
1105 | f2fs_destroy_compress_ctx(&cc); | |
1106 | ||
1107 | return first_index; | |
1108 | } | |
1109 | ||
3265d3db CY |
1110 | int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock) |
1111 | { | |
1112 | void *fsdata = NULL; | |
1113 | struct page *pagep; | |
1114 | int log_cluster_size = F2FS_I(inode)->i_log_cluster_size; | |
1115 | pgoff_t start_idx = from >> (PAGE_SHIFT + log_cluster_size) << | |
1116 | log_cluster_size; | |
1117 | int err; | |
1118 | ||
1119 | err = f2fs_is_compressed_cluster(inode, start_idx); | |
1120 | if (err < 0) | |
1121 | return err; | |
1122 | ||
1123 | /* truncate normal cluster */ | |
1124 | if (!err) | |
1125 | return f2fs_do_truncate_blocks(inode, from, lock); | |
1126 | ||
1127 | /* truncate compressed cluster */ | |
1128 | err = f2fs_prepare_compress_overwrite(inode, &pagep, | |
1129 | start_idx, &fsdata); | |
1130 | ||
1131 | /* should not be a normal cluster */ | |
1132 | f2fs_bug_on(F2FS_I_SB(inode), err == 0); | |
1133 | ||
1134 | if (err <= 0) | |
1135 | return err; | |
1136 | ||
1137 | if (err > 0) { | |
1138 | struct page **rpages = fsdata; | |
1139 | int cluster_size = F2FS_I(inode)->i_cluster_size; | |
1140 | int i; | |
1141 | ||
1142 | for (i = cluster_size - 1; i >= 0; i--) { | |
1143 | loff_t start = rpages[i]->index << PAGE_SHIFT; | |
1144 | ||
1145 | if (from <= start) { | |
1146 | zero_user_segment(rpages[i], 0, PAGE_SIZE); | |
1147 | } else { | |
1148 | zero_user_segment(rpages[i], from - start, | |
1149 | PAGE_SIZE); | |
1150 | break; | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | f2fs_compress_write_end(inode, fsdata, start_idx, true); | |
1155 | } | |
1156 | return 0; | |
1157 | } | |
1158 | ||
4c8ff709 CY |
1159 | static int f2fs_write_compressed_pages(struct compress_ctx *cc, |
1160 | int *submitted, | |
1161 | struct writeback_control *wbc, | |
1162 | enum iostat_type io_type) | |
1163 | { | |
1164 | struct inode *inode = cc->inode; | |
1165 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1166 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1167 | struct f2fs_io_info fio = { | |
1168 | .sbi = sbi, | |
1169 | .ino = cc->inode->i_ino, | |
1170 | .type = DATA, | |
1171 | .op = REQ_OP_WRITE, | |
1172 | .op_flags = wbc_to_write_flags(wbc), | |
1173 | .old_blkaddr = NEW_ADDR, | |
1174 | .page = NULL, | |
1175 | .encrypted_page = NULL, | |
1176 | .compressed_page = NULL, | |
1177 | .submitted = false, | |
4c8ff709 CY |
1178 | .io_type = io_type, |
1179 | .io_wbc = wbc, | |
27aacd28 | 1180 | .encrypted = fscrypt_inode_uses_fs_layer_crypto(cc->inode), |
4c8ff709 CY |
1181 | }; |
1182 | struct dnode_of_data dn; | |
1183 | struct node_info ni; | |
1184 | struct compress_io_ctx *cic; | |
1185 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
1186 | unsigned int last_index = cc->cluster_size - 1; | |
1187 | loff_t psize; | |
1188 | int i, err; | |
1189 | ||
79963d96 CY |
1190 | if (IS_NOQUOTA(inode)) { |
1191 | /* | |
1192 | * We need to wait for node_write to avoid block allocation during | |
1193 | * checkpoint. This can only happen to quota writes which can cause | |
1194 | * the below discard race condition. | |
1195 | */ | |
1196 | down_read(&sbi->node_write); | |
1197 | } else if (!f2fs_trylock_op(sbi)) { | |
31083031 | 1198 | goto out_free; |
79963d96 | 1199 | } |
4c8ff709 | 1200 | |
df77fbd8 | 1201 | set_new_dnode(&dn, cc->inode, NULL, NULL, 0); |
4c8ff709 CY |
1202 | |
1203 | err = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
1204 | if (err) | |
1205 | goto out_unlock_op; | |
1206 | ||
1207 | for (i = 0; i < cc->cluster_size; i++) { | |
a2ced1ce | 1208 | if (data_blkaddr(dn.inode, dn.node_page, |
4c8ff709 CY |
1209 | dn.ofs_in_node + i) == NULL_ADDR) |
1210 | goto out_put_dnode; | |
1211 | } | |
1212 | ||
1213 | psize = (loff_t)(cc->rpages[last_index]->index + 1) << PAGE_SHIFT; | |
1214 | ||
1215 | err = f2fs_get_node_info(fio.sbi, dn.nid, &ni); | |
1216 | if (err) | |
1217 | goto out_put_dnode; | |
1218 | ||
1219 | fio.version = ni.version; | |
1220 | ||
c68d6c88 | 1221 | cic = kmem_cache_zalloc(cic_entry_slab, GFP_NOFS); |
4c8ff709 CY |
1222 | if (!cic) |
1223 | goto out_put_dnode; | |
1224 | ||
1225 | cic->magic = F2FS_COMPRESSED_PAGE_MAGIC; | |
1226 | cic->inode = inode; | |
e6c3948d | 1227 | atomic_set(&cic->pending_pages, cc->nr_cpages); |
31083031 | 1228 | cic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 CY |
1229 | if (!cic->rpages) |
1230 | goto out_put_cic; | |
1231 | ||
1232 | cic->nr_rpages = cc->cluster_size; | |
1233 | ||
1234 | for (i = 0; i < cc->nr_cpages; i++) { | |
1235 | f2fs_set_compressed_page(cc->cpages[i], inode, | |
887347a0 | 1236 | cc->rpages[i + 1]->index, cic); |
4c8ff709 | 1237 | fio.compressed_page = cc->cpages[i]; |
f567adb0 CY |
1238 | |
1239 | fio.old_blkaddr = data_blkaddr(dn.inode, dn.node_page, | |
1240 | dn.ofs_in_node + i + 1); | |
1241 | ||
1242 | /* wait for GCed page writeback via META_MAPPING */ | |
1243 | f2fs_wait_on_block_writeback(inode, fio.old_blkaddr); | |
1244 | ||
4c8ff709 CY |
1245 | if (fio.encrypted) { |
1246 | fio.page = cc->rpages[i + 1]; | |
1247 | err = f2fs_encrypt_one_page(&fio); | |
1248 | if (err) | |
1249 | goto out_destroy_crypt; | |
1250 | cc->cpages[i] = fio.encrypted_page; | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | set_cluster_writeback(cc); | |
1255 | ||
1256 | for (i = 0; i < cc->cluster_size; i++) | |
1257 | cic->rpages[i] = cc->rpages[i]; | |
1258 | ||
1259 | for (i = 0; i < cc->cluster_size; i++, dn.ofs_in_node++) { | |
1260 | block_t blkaddr; | |
1261 | ||
a2ced1ce | 1262 | blkaddr = f2fs_data_blkaddr(&dn); |
95978caa | 1263 | fio.page = cc->rpages[i]; |
4c8ff709 CY |
1264 | fio.old_blkaddr = blkaddr; |
1265 | ||
1266 | /* cluster header */ | |
1267 | if (i == 0) { | |
1268 | if (blkaddr == COMPRESS_ADDR) | |
1269 | fio.compr_blocks++; | |
1270 | if (__is_valid_data_blkaddr(blkaddr)) | |
1271 | f2fs_invalidate_blocks(sbi, blkaddr); | |
1272 | f2fs_update_data_blkaddr(&dn, COMPRESS_ADDR); | |
1273 | goto unlock_continue; | |
1274 | } | |
1275 | ||
1276 | if (fio.compr_blocks && __is_valid_data_blkaddr(blkaddr)) | |
1277 | fio.compr_blocks++; | |
1278 | ||
1279 | if (i > cc->nr_cpages) { | |
1280 | if (__is_valid_data_blkaddr(blkaddr)) { | |
1281 | f2fs_invalidate_blocks(sbi, blkaddr); | |
1282 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); | |
1283 | } | |
1284 | goto unlock_continue; | |
1285 | } | |
1286 | ||
1287 | f2fs_bug_on(fio.sbi, blkaddr == NULL_ADDR); | |
1288 | ||
1289 | if (fio.encrypted) | |
1290 | fio.encrypted_page = cc->cpages[i - 1]; | |
1291 | else | |
1292 | fio.compressed_page = cc->cpages[i - 1]; | |
1293 | ||
1294 | cc->cpages[i - 1] = NULL; | |
1295 | f2fs_outplace_write_data(&dn, &fio); | |
1296 | (*submitted)++; | |
1297 | unlock_continue: | |
1298 | inode_dec_dirty_pages(cc->inode); | |
1299 | unlock_page(fio.page); | |
1300 | } | |
1301 | ||
1302 | if (fio.compr_blocks) | |
1303 | f2fs_i_compr_blocks_update(inode, fio.compr_blocks - 1, false); | |
1304 | f2fs_i_compr_blocks_update(inode, cc->nr_cpages, true); | |
1305 | ||
1306 | set_inode_flag(cc->inode, FI_APPEND_WRITE); | |
1307 | if (cc->cluster_idx == 0) | |
1308 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
1309 | ||
1310 | f2fs_put_dnode(&dn); | |
79963d96 CY |
1311 | if (IS_NOQUOTA(inode)) |
1312 | up_read(&sbi->node_write); | |
1313 | else | |
435cbab9 | 1314 | f2fs_unlock_op(sbi); |
4c8ff709 | 1315 | |
c10c9820 | 1316 | spin_lock(&fi->i_size_lock); |
4c8ff709 CY |
1317 | if (fi->last_disk_size < psize) |
1318 | fi->last_disk_size = psize; | |
c10c9820 | 1319 | spin_unlock(&fi->i_size_lock); |
4c8ff709 CY |
1320 | |
1321 | f2fs_put_rpages(cc); | |
31083031 CY |
1322 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
1323 | cc->cpages = NULL; | |
4c8ff709 CY |
1324 | f2fs_destroy_compress_ctx(cc); |
1325 | return 0; | |
1326 | ||
1327 | out_destroy_crypt: | |
31083031 | 1328 | page_array_free(cc->inode, cic->rpages, cc->cluster_size); |
4c8ff709 CY |
1329 | |
1330 | for (--i; i >= 0; i--) | |
1331 | fscrypt_finalize_bounce_page(&cc->cpages[i]); | |
1332 | for (i = 0; i < cc->nr_cpages; i++) { | |
1333 | if (!cc->cpages[i]) | |
1334 | continue; | |
24636a2c CY |
1335 | f2fs_compress_free_page(cc->cpages[i]); |
1336 | cc->cpages[i] = NULL; | |
4c8ff709 CY |
1337 | } |
1338 | out_put_cic: | |
c68d6c88 | 1339 | kmem_cache_free(cic_entry_slab, cic); |
4c8ff709 CY |
1340 | out_put_dnode: |
1341 | f2fs_put_dnode(&dn); | |
1342 | out_unlock_op: | |
79963d96 CY |
1343 | if (IS_NOQUOTA(inode)) |
1344 | up_read(&sbi->node_write); | |
1345 | else | |
435cbab9 | 1346 | f2fs_unlock_op(sbi); |
31083031 CY |
1347 | out_free: |
1348 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); | |
1349 | cc->cpages = NULL; | |
4c8ff709 CY |
1350 | return -EAGAIN; |
1351 | } | |
1352 | ||
1353 | void f2fs_compress_write_end_io(struct bio *bio, struct page *page) | |
1354 | { | |
1355 | struct f2fs_sb_info *sbi = bio->bi_private; | |
1356 | struct compress_io_ctx *cic = | |
1357 | (struct compress_io_ctx *)page_private(page); | |
1358 | int i; | |
1359 | ||
1360 | if (unlikely(bio->bi_status)) | |
1361 | mapping_set_error(cic->inode->i_mapping, -EIO); | |
1362 | ||
5e6bbde9 | 1363 | f2fs_compress_free_page(page); |
4c8ff709 CY |
1364 | |
1365 | dec_page_count(sbi, F2FS_WB_DATA); | |
1366 | ||
e6c3948d | 1367 | if (atomic_dec_return(&cic->pending_pages)) |
4c8ff709 CY |
1368 | return; |
1369 | ||
1370 | for (i = 0; i < cic->nr_rpages; i++) { | |
1371 | WARN_ON(!cic->rpages[i]); | |
1372 | clear_cold_data(cic->rpages[i]); | |
1373 | end_page_writeback(cic->rpages[i]); | |
1374 | } | |
1375 | ||
31083031 | 1376 | page_array_free(cic->inode, cic->rpages, cic->nr_rpages); |
c68d6c88 | 1377 | kmem_cache_free(cic_entry_slab, cic); |
4c8ff709 CY |
1378 | } |
1379 | ||
1380 | static int f2fs_write_raw_pages(struct compress_ctx *cc, | |
1381 | int *submitted, | |
1382 | struct writeback_control *wbc, | |
1383 | enum iostat_type io_type) | |
1384 | { | |
1385 | struct address_space *mapping = cc->inode->i_mapping; | |
1386 | int _submitted, compr_blocks, ret; | |
1387 | int i = -1, err = 0; | |
1388 | ||
1389 | compr_blocks = f2fs_compressed_blocks(cc); | |
1390 | if (compr_blocks < 0) { | |
1391 | err = compr_blocks; | |
1392 | goto out_err; | |
1393 | } | |
1394 | ||
1395 | for (i = 0; i < cc->cluster_size; i++) { | |
1396 | if (!cc->rpages[i]) | |
1397 | continue; | |
1398 | retry_write: | |
1399 | if (cc->rpages[i]->mapping != mapping) { | |
1400 | unlock_page(cc->rpages[i]); | |
1401 | continue; | |
1402 | } | |
1403 | ||
1404 | BUG_ON(!PageLocked(cc->rpages[i])); | |
1405 | ||
1406 | ret = f2fs_write_single_data_page(cc->rpages[i], &_submitted, | |
1407 | NULL, NULL, wbc, io_type, | |
8bda39a8 | 1408 | compr_blocks, false); |
4c8ff709 CY |
1409 | if (ret) { |
1410 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
1411 | unlock_page(cc->rpages[i]); | |
1412 | ret = 0; | |
1413 | } else if (ret == -EAGAIN) { | |
466357dc CY |
1414 | /* |
1415 | * for quota file, just redirty left pages to | |
1416 | * avoid deadlock caused by cluster update race | |
1417 | * from foreground operation. | |
1418 | */ | |
1419 | if (IS_NOQUOTA(cc->inode)) { | |
1420 | err = 0; | |
1421 | goto out_err; | |
1422 | } | |
4c8ff709 CY |
1423 | ret = 0; |
1424 | cond_resched(); | |
5df7731f CY |
1425 | congestion_wait(BLK_RW_ASYNC, |
1426 | DEFAULT_IO_TIMEOUT); | |
4c8ff709 | 1427 | lock_page(cc->rpages[i]); |
eb1353cf CY |
1428 | |
1429 | if (!PageDirty(cc->rpages[i])) { | |
1430 | unlock_page(cc->rpages[i]); | |
1431 | continue; | |
1432 | } | |
1433 | ||
4c8ff709 CY |
1434 | clear_page_dirty_for_io(cc->rpages[i]); |
1435 | goto retry_write; | |
1436 | } | |
1437 | err = ret; | |
466357dc | 1438 | goto out_err; |
4c8ff709 CY |
1439 | } |
1440 | ||
1441 | *submitted += _submitted; | |
1442 | } | |
8bda39a8 CY |
1443 | |
1444 | f2fs_balance_fs(F2FS_M_SB(mapping), true); | |
1445 | ||
4c8ff709 | 1446 | return 0; |
4c8ff709 CY |
1447 | out_err: |
1448 | for (++i; i < cc->cluster_size; i++) { | |
1449 | if (!cc->rpages[i]) | |
1450 | continue; | |
1451 | redirty_page_for_writepage(wbc, cc->rpages[i]); | |
1452 | unlock_page(cc->rpages[i]); | |
1453 | } | |
1454 | return err; | |
1455 | } | |
1456 | ||
1457 | int f2fs_write_multi_pages(struct compress_ctx *cc, | |
1458 | int *submitted, | |
1459 | struct writeback_control *wbc, | |
1460 | enum iostat_type io_type) | |
1461 | { | |
4c8ff709 CY |
1462 | int err; |
1463 | ||
1464 | *submitted = 0; | |
1465 | if (cluster_may_compress(cc)) { | |
1466 | err = f2fs_compress_pages(cc); | |
1467 | if (err == -EAGAIN) { | |
1468 | goto write; | |
1469 | } else if (err) { | |
1470 | f2fs_put_rpages_wbc(cc, wbc, true, 1); | |
1471 | goto destroy_out; | |
1472 | } | |
1473 | ||
1474 | err = f2fs_write_compressed_pages(cc, submitted, | |
1475 | wbc, io_type); | |
4c8ff709 CY |
1476 | if (!err) |
1477 | return 0; | |
1478 | f2fs_bug_on(F2FS_I_SB(cc->inode), err != -EAGAIN); | |
1479 | } | |
1480 | write: | |
1481 | f2fs_bug_on(F2FS_I_SB(cc->inode), *submitted); | |
1482 | ||
1483 | err = f2fs_write_raw_pages(cc, submitted, wbc, io_type); | |
1484 | f2fs_put_rpages_wbc(cc, wbc, false, 0); | |
1485 | destroy_out: | |
1486 | f2fs_destroy_compress_ctx(cc); | |
1487 | return err; | |
1488 | } | |
1489 | ||
1490 | struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc) | |
1491 | { | |
4c8ff709 CY |
1492 | struct decompress_io_ctx *dic; |
1493 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
1494 | int i; | |
1495 | ||
c68d6c88 | 1496 | dic = kmem_cache_zalloc(dic_entry_slab, GFP_NOFS); |
4c8ff709 CY |
1497 | if (!dic) |
1498 | return ERR_PTR(-ENOMEM); | |
1499 | ||
31083031 | 1500 | dic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 | 1501 | if (!dic->rpages) { |
c68d6c88 | 1502 | kmem_cache_free(dic_entry_slab, dic); |
4c8ff709 CY |
1503 | return ERR_PTR(-ENOMEM); |
1504 | } | |
1505 | ||
1506 | dic->magic = F2FS_COMPRESSED_PAGE_MAGIC; | |
1507 | dic->inode = cc->inode; | |
e6c3948d | 1508 | atomic_set(&dic->pending_pages, cc->nr_cpages); |
4c8ff709 CY |
1509 | dic->cluster_idx = cc->cluster_idx; |
1510 | dic->cluster_size = cc->cluster_size; | |
1511 | dic->log_cluster_size = cc->log_cluster_size; | |
1512 | dic->nr_cpages = cc->nr_cpages; | |
1513 | dic->failed = false; | |
1514 | ||
1515 | for (i = 0; i < dic->cluster_size; i++) | |
1516 | dic->rpages[i] = cc->rpages[i]; | |
1517 | dic->nr_rpages = cc->cluster_size; | |
1518 | ||
31083031 | 1519 | dic->cpages = page_array_alloc(dic->inode, dic->nr_cpages); |
4c8ff709 CY |
1520 | if (!dic->cpages) |
1521 | goto out_free; | |
1522 | ||
1523 | for (i = 0; i < dic->nr_cpages; i++) { | |
1524 | struct page *page; | |
1525 | ||
5e6bbde9 | 1526 | page = f2fs_compress_alloc_page(); |
4c8ff709 CY |
1527 | if (!page) |
1528 | goto out_free; | |
1529 | ||
1530 | f2fs_set_compressed_page(page, cc->inode, | |
887347a0 | 1531 | start_idx + i + 1, dic); |
4c8ff709 CY |
1532 | dic->cpages[i] = page; |
1533 | } | |
1534 | ||
4c8ff709 CY |
1535 | return dic; |
1536 | ||
1537 | out_free: | |
1538 | f2fs_free_dic(dic); | |
1539 | return ERR_PTR(-ENOMEM); | |
1540 | } | |
1541 | ||
1542 | void f2fs_free_dic(struct decompress_io_ctx *dic) | |
1543 | { | |
1544 | int i; | |
1545 | ||
1546 | if (dic->tpages) { | |
1547 | for (i = 0; i < dic->cluster_size; i++) { | |
1548 | if (dic->rpages[i]) | |
1549 | continue; | |
8908e753 CY |
1550 | if (!dic->tpages[i]) |
1551 | continue; | |
5e6bbde9 | 1552 | f2fs_compress_free_page(dic->tpages[i]); |
4c8ff709 | 1553 | } |
31083031 | 1554 | page_array_free(dic->inode, dic->tpages, dic->cluster_size); |
4c8ff709 CY |
1555 | } |
1556 | ||
1557 | if (dic->cpages) { | |
1558 | for (i = 0; i < dic->nr_cpages; i++) { | |
1559 | if (!dic->cpages[i]) | |
1560 | continue; | |
5e6bbde9 | 1561 | f2fs_compress_free_page(dic->cpages[i]); |
4c8ff709 | 1562 | } |
31083031 | 1563 | page_array_free(dic->inode, dic->cpages, dic->nr_cpages); |
4c8ff709 CY |
1564 | } |
1565 | ||
31083031 | 1566 | page_array_free(dic->inode, dic->rpages, dic->nr_rpages); |
c68d6c88 | 1567 | kmem_cache_free(dic_entry_slab, dic); |
4c8ff709 CY |
1568 | } |
1569 | ||
1570 | void f2fs_decompress_end_io(struct page **rpages, | |
1571 | unsigned int cluster_size, bool err, bool verity) | |
1572 | { | |
1573 | int i; | |
1574 | ||
1575 | for (i = 0; i < cluster_size; i++) { | |
1576 | struct page *rpage = rpages[i]; | |
1577 | ||
1578 | if (!rpage) | |
1579 | continue; | |
1580 | ||
23c51bed CY |
1581 | if (err || PageError(rpage)) |
1582 | goto clear_uptodate; | |
1583 | ||
1584 | if (!verity || fsverity_verify_page(rpage)) { | |
1585 | SetPageUptodate(rpage); | |
1586 | goto unlock; | |
4c8ff709 | 1587 | } |
23c51bed CY |
1588 | clear_uptodate: |
1589 | ClearPageUptodate(rpage); | |
1590 | ClearPageError(rpage); | |
1591 | unlock: | |
4c8ff709 CY |
1592 | unlock_page(rpage); |
1593 | } | |
1594 | } | |
31083031 CY |
1595 | |
1596 | int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) | |
1597 | { | |
1598 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
1599 | char slab_name[32]; | |
1600 | ||
1601 | sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), MINOR(dev)); | |
1602 | ||
1603 | sbi->page_array_slab_size = sizeof(struct page *) << | |
1604 | F2FS_OPTION(sbi).compress_log_size; | |
1605 | ||
1606 | sbi->page_array_slab = f2fs_kmem_cache_create(slab_name, | |
1607 | sbi->page_array_slab_size); | |
1608 | if (!sbi->page_array_slab) | |
1609 | return -ENOMEM; | |
1610 | return 0; | |
1611 | } | |
1612 | ||
1613 | void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) | |
1614 | { | |
1615 | kmem_cache_destroy(sbi->page_array_slab); | |
1616 | } | |
c68d6c88 CY |
1617 | |
1618 | static int __init f2fs_init_cic_cache(void) | |
1619 | { | |
1620 | cic_entry_slab = f2fs_kmem_cache_create("f2fs_cic_entry", | |
1621 | sizeof(struct compress_io_ctx)); | |
1622 | if (!cic_entry_slab) | |
1623 | return -ENOMEM; | |
1624 | return 0; | |
1625 | } | |
1626 | ||
1627 | static void f2fs_destroy_cic_cache(void) | |
1628 | { | |
1629 | kmem_cache_destroy(cic_entry_slab); | |
1630 | } | |
1631 | ||
1632 | static int __init f2fs_init_dic_cache(void) | |
1633 | { | |
1634 | dic_entry_slab = f2fs_kmem_cache_create("f2fs_dic_entry", | |
1635 | sizeof(struct decompress_io_ctx)); | |
1636 | if (!dic_entry_slab) | |
1637 | return -ENOMEM; | |
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | static void f2fs_destroy_dic_cache(void) | |
1642 | { | |
1643 | kmem_cache_destroy(dic_entry_slab); | |
1644 | } | |
1645 | ||
1646 | int __init f2fs_init_compress_cache(void) | |
1647 | { | |
1648 | int err; | |
1649 | ||
1650 | err = f2fs_init_cic_cache(); | |
1651 | if (err) | |
1652 | goto out; | |
1653 | err = f2fs_init_dic_cache(); | |
1654 | if (err) | |
1655 | goto free_cic; | |
1656 | return 0; | |
1657 | free_cic: | |
1658 | f2fs_destroy_cic_cache(); | |
1659 | out: | |
1660 | return -ENOMEM; | |
1661 | } | |
1662 | ||
1663 | void f2fs_destroy_compress_cache(void) | |
1664 | { | |
1665 | f2fs_destroy_dic_cache(); | |
1666 | f2fs_destroy_cic_cache(); | |
1667 | } |