]>
Commit | Line | Data |
---|---|---|
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 | ||
bc67c5d0 | 126 | static void f2fs_put_rpages_mapping(struct address_space *mapping, |
4c8ff709 CY |
127 | pgoff_t start, int len) |
128 | { | |
129 | int i; | |
130 | ||
131 | for (i = 0; i < len; i++) { | |
132 | struct page *page = find_get_page(mapping, start + i); | |
133 | ||
134 | put_page(page); | |
135 | put_page(page); | |
136 | } | |
137 | } | |
138 | ||
139 | static void f2fs_put_rpages_wbc(struct compress_ctx *cc, | |
140 | struct writeback_control *wbc, bool redirty, int unlock) | |
141 | { | |
142 | unsigned int i; | |
143 | ||
144 | for (i = 0; i < cc->cluster_size; i++) { | |
145 | if (!cc->rpages[i]) | |
146 | continue; | |
147 | if (redirty) | |
148 | redirty_page_for_writepage(wbc, cc->rpages[i]); | |
149 | f2fs_put_page(cc->rpages[i], unlock); | |
150 | } | |
151 | } | |
152 | ||
153 | struct page *f2fs_compress_control_page(struct page *page) | |
154 | { | |
155 | return ((struct compress_io_ctx *)page_private(page))->rpages[0]; | |
156 | } | |
157 | ||
158 | int f2fs_init_compress_ctx(struct compress_ctx *cc) | |
159 | { | |
adfc6943 | 160 | if (cc->rpages) |
4c8ff709 CY |
161 | return 0; |
162 | ||
31083031 | 163 | cc->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 CY |
164 | return cc->rpages ? 0 : -ENOMEM; |
165 | } | |
166 | ||
167 | void f2fs_destroy_compress_ctx(struct compress_ctx *cc) | |
168 | { | |
31083031 | 169 | page_array_free(cc->inode, cc->rpages, cc->cluster_size); |
4c8ff709 CY |
170 | cc->rpages = NULL; |
171 | cc->nr_rpages = 0; | |
172 | cc->nr_cpages = 0; | |
173 | cc->cluster_idx = NULL_CLUSTER; | |
174 | } | |
175 | ||
176 | void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page) | |
177 | { | |
178 | unsigned int cluster_ofs; | |
179 | ||
180 | if (!f2fs_cluster_can_merge_page(cc, page->index)) | |
181 | f2fs_bug_on(F2FS_I_SB(cc->inode), 1); | |
182 | ||
183 | cluster_ofs = offset_in_cluster(cc, page->index); | |
184 | cc->rpages[cluster_ofs] = page; | |
185 | cc->nr_rpages++; | |
186 | cc->cluster_idx = cluster_idx(cc, page->index); | |
187 | } | |
188 | ||
189 | #ifdef CONFIG_F2FS_FS_LZO | |
190 | static int lzo_init_compress_ctx(struct compress_ctx *cc) | |
191 | { | |
192 | cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
193 | LZO1X_MEM_COMPRESS, GFP_NOFS); | |
194 | if (!cc->private) | |
195 | return -ENOMEM; | |
196 | ||
197 | cc->clen = lzo1x_worst_compress(PAGE_SIZE << cc->log_cluster_size); | |
198 | return 0; | |
199 | } | |
200 | ||
201 | static void lzo_destroy_compress_ctx(struct compress_ctx *cc) | |
202 | { | |
203 | kvfree(cc->private); | |
204 | cc->private = NULL; | |
205 | } | |
206 | ||
207 | static int lzo_compress_pages(struct compress_ctx *cc) | |
208 | { | |
209 | int ret; | |
210 | ||
211 | ret = lzo1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, | |
212 | &cc->clen, cc->private); | |
213 | if (ret != LZO_E_OK) { | |
214 | printk_ratelimited("%sF2FS-fs (%s): lzo compress failed, ret:%d\n", | |
215 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, ret); | |
216 | return -EIO; | |
217 | } | |
218 | return 0; | |
219 | } | |
220 | ||
221 | static int lzo_decompress_pages(struct decompress_io_ctx *dic) | |
222 | { | |
223 | int ret; | |
224 | ||
225 | ret = lzo1x_decompress_safe(dic->cbuf->cdata, dic->clen, | |
226 | dic->rbuf, &dic->rlen); | |
227 | if (ret != LZO_E_OK) { | |
228 | printk_ratelimited("%sF2FS-fs (%s): lzo decompress failed, ret:%d\n", | |
229 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, ret); | |
230 | return -EIO; | |
231 | } | |
232 | ||
233 | if (dic->rlen != PAGE_SIZE << dic->log_cluster_size) { | |
234 | printk_ratelimited("%sF2FS-fs (%s): lzo invalid rlen:%zu, " | |
235 | "expected:%lu\n", KERN_ERR, | |
236 | F2FS_I_SB(dic->inode)->sb->s_id, | |
237 | dic->rlen, | |
238 | PAGE_SIZE << dic->log_cluster_size); | |
239 | return -EIO; | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static const struct f2fs_compress_ops f2fs_lzo_ops = { | |
245 | .init_compress_ctx = lzo_init_compress_ctx, | |
246 | .destroy_compress_ctx = lzo_destroy_compress_ctx, | |
247 | .compress_pages = lzo_compress_pages, | |
248 | .decompress_pages = lzo_decompress_pages, | |
249 | }; | |
250 | #endif | |
251 | ||
252 | #ifdef CONFIG_F2FS_FS_LZ4 | |
253 | static int lz4_init_compress_ctx(struct compress_ctx *cc) | |
254 | { | |
255 | cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
256 | LZ4_MEM_COMPRESS, GFP_NOFS); | |
257 | if (!cc->private) | |
258 | return -ENOMEM; | |
259 | ||
f6644143 CY |
260 | /* |
261 | * we do not change cc->clen to LZ4_compressBound(inputsize) to | |
262 | * adapt worst compress case, because lz4 compressor can handle | |
263 | * output budget properly. | |
264 | */ | |
265 | cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
4c8ff709 CY |
266 | return 0; |
267 | } | |
268 | ||
269 | static void lz4_destroy_compress_ctx(struct compress_ctx *cc) | |
270 | { | |
271 | kvfree(cc->private); | |
272 | cc->private = NULL; | |
273 | } | |
274 | ||
275 | static int lz4_compress_pages(struct compress_ctx *cc) | |
276 | { | |
277 | int len; | |
278 | ||
279 | len = LZ4_compress_default(cc->rbuf, cc->cbuf->cdata, cc->rlen, | |
280 | cc->clen, cc->private); | |
f6644143 CY |
281 | if (!len) |
282 | return -EAGAIN; | |
283 | ||
4c8ff709 CY |
284 | cc->clen = len; |
285 | return 0; | |
286 | } | |
287 | ||
288 | static int lz4_decompress_pages(struct decompress_io_ctx *dic) | |
289 | { | |
290 | int ret; | |
291 | ||
292 | ret = LZ4_decompress_safe(dic->cbuf->cdata, dic->rbuf, | |
293 | dic->clen, dic->rlen); | |
294 | if (ret < 0) { | |
295 | printk_ratelimited("%sF2FS-fs (%s): lz4 decompress failed, ret:%d\n", | |
296 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, ret); | |
297 | return -EIO; | |
298 | } | |
299 | ||
300 | if (ret != PAGE_SIZE << dic->log_cluster_size) { | |
301 | printk_ratelimited("%sF2FS-fs (%s): lz4 invalid rlen:%zu, " | |
302 | "expected:%lu\n", KERN_ERR, | |
303 | F2FS_I_SB(dic->inode)->sb->s_id, | |
304 | dic->rlen, | |
305 | PAGE_SIZE << dic->log_cluster_size); | |
306 | return -EIO; | |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
311 | static const struct f2fs_compress_ops f2fs_lz4_ops = { | |
312 | .init_compress_ctx = lz4_init_compress_ctx, | |
313 | .destroy_compress_ctx = lz4_destroy_compress_ctx, | |
314 | .compress_pages = lz4_compress_pages, | |
315 | .decompress_pages = lz4_decompress_pages, | |
316 | }; | |
317 | #endif | |
318 | ||
50cfa66f CY |
319 | #ifdef CONFIG_F2FS_FS_ZSTD |
320 | #define F2FS_ZSTD_DEFAULT_CLEVEL 1 | |
321 | ||
322 | static int zstd_init_compress_ctx(struct compress_ctx *cc) | |
323 | { | |
324 | ZSTD_parameters params; | |
325 | ZSTD_CStream *stream; | |
326 | void *workspace; | |
327 | unsigned int workspace_size; | |
328 | ||
329 | params = ZSTD_getParams(F2FS_ZSTD_DEFAULT_CLEVEL, cc->rlen, 0); | |
330 | workspace_size = ZSTD_CStreamWorkspaceBound(params.cParams); | |
331 | ||
332 | workspace = f2fs_kvmalloc(F2FS_I_SB(cc->inode), | |
333 | workspace_size, GFP_NOFS); | |
334 | if (!workspace) | |
335 | return -ENOMEM; | |
336 | ||
337 | stream = ZSTD_initCStream(params, 0, workspace, workspace_size); | |
338 | if (!stream) { | |
339 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initCStream failed\n", | |
340 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, | |
341 | __func__); | |
342 | kvfree(workspace); | |
343 | return -EIO; | |
344 | } | |
345 | ||
346 | cc->private = workspace; | |
347 | cc->private2 = stream; | |
348 | ||
349 | cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
350 | return 0; | |
351 | } | |
352 | ||
353 | static void zstd_destroy_compress_ctx(struct compress_ctx *cc) | |
354 | { | |
355 | kvfree(cc->private); | |
356 | cc->private = NULL; | |
357 | cc->private2 = NULL; | |
358 | } | |
359 | ||
360 | static int zstd_compress_pages(struct compress_ctx *cc) | |
361 | { | |
362 | ZSTD_CStream *stream = cc->private2; | |
363 | ZSTD_inBuffer inbuf; | |
364 | ZSTD_outBuffer outbuf; | |
365 | int src_size = cc->rlen; | |
366 | int dst_size = src_size - PAGE_SIZE - COMPRESS_HEADER_SIZE; | |
367 | int ret; | |
368 | ||
369 | inbuf.pos = 0; | |
370 | inbuf.src = cc->rbuf; | |
371 | inbuf.size = src_size; | |
372 | ||
373 | outbuf.pos = 0; | |
374 | outbuf.dst = cc->cbuf->cdata; | |
375 | outbuf.size = dst_size; | |
376 | ||
377 | ret = ZSTD_compressStream(stream, &outbuf, &inbuf); | |
378 | if (ZSTD_isError(ret)) { | |
379 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d\n", | |
380 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, | |
381 | __func__, ZSTD_getErrorCode(ret)); | |
382 | return -EIO; | |
383 | } | |
384 | ||
385 | ret = ZSTD_endStream(stream, &outbuf); | |
386 | if (ZSTD_isError(ret)) { | |
387 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_endStream returned %d\n", | |
388 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, | |
389 | __func__, ZSTD_getErrorCode(ret)); | |
390 | return -EIO; | |
391 | } | |
392 | ||
1454c978 CY |
393 | /* |
394 | * there is compressed data remained in intermediate buffer due to | |
395 | * no more space in cbuf.cdata | |
396 | */ | |
397 | if (ret) | |
398 | return -EAGAIN; | |
399 | ||
50cfa66f CY |
400 | cc->clen = outbuf.pos; |
401 | return 0; | |
402 | } | |
403 | ||
404 | static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic) | |
405 | { | |
406 | ZSTD_DStream *stream; | |
407 | void *workspace; | |
408 | unsigned int workspace_size; | |
0e2b7385 CY |
409 | unsigned int max_window_size = |
410 | MAX_COMPRESS_WINDOW_SIZE(dic->log_cluster_size); | |
50cfa66f | 411 | |
0e2b7385 | 412 | workspace_size = ZSTD_DStreamWorkspaceBound(max_window_size); |
50cfa66f CY |
413 | |
414 | workspace = f2fs_kvmalloc(F2FS_I_SB(dic->inode), | |
415 | workspace_size, GFP_NOFS); | |
416 | if (!workspace) | |
417 | return -ENOMEM; | |
418 | ||
0e2b7385 | 419 | stream = ZSTD_initDStream(max_window_size, workspace, workspace_size); |
50cfa66f CY |
420 | if (!stream) { |
421 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initDStream failed\n", | |
422 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, | |
423 | __func__); | |
424 | kvfree(workspace); | |
425 | return -EIO; | |
426 | } | |
427 | ||
428 | dic->private = workspace; | |
429 | dic->private2 = stream; | |
430 | ||
431 | return 0; | |
432 | } | |
433 | ||
434 | static void zstd_destroy_decompress_ctx(struct decompress_io_ctx *dic) | |
435 | { | |
436 | kvfree(dic->private); | |
437 | dic->private = NULL; | |
438 | dic->private2 = NULL; | |
439 | } | |
440 | ||
441 | static int zstd_decompress_pages(struct decompress_io_ctx *dic) | |
442 | { | |
443 | ZSTD_DStream *stream = dic->private2; | |
444 | ZSTD_inBuffer inbuf; | |
445 | ZSTD_outBuffer outbuf; | |
446 | int ret; | |
447 | ||
448 | inbuf.pos = 0; | |
449 | inbuf.src = dic->cbuf->cdata; | |
450 | inbuf.size = dic->clen; | |
451 | ||
452 | outbuf.pos = 0; | |
453 | outbuf.dst = dic->rbuf; | |
454 | outbuf.size = dic->rlen; | |
455 | ||
456 | ret = ZSTD_decompressStream(stream, &outbuf, &inbuf); | |
457 | if (ZSTD_isError(ret)) { | |
458 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d\n", | |
459 | KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, | |
460 | __func__, ZSTD_getErrorCode(ret)); | |
461 | return -EIO; | |
462 | } | |
463 | ||
464 | if (dic->rlen != outbuf.pos) { | |
465 | printk_ratelimited("%sF2FS-fs (%s): %s ZSTD invalid rlen:%zu, " | |
466 | "expected:%lu\n", KERN_ERR, | |
467 | F2FS_I_SB(dic->inode)->sb->s_id, | |
468 | __func__, dic->rlen, | |
469 | PAGE_SIZE << dic->log_cluster_size); | |
470 | return -EIO; | |
471 | } | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | static const struct f2fs_compress_ops f2fs_zstd_ops = { | |
477 | .init_compress_ctx = zstd_init_compress_ctx, | |
478 | .destroy_compress_ctx = zstd_destroy_compress_ctx, | |
479 | .compress_pages = zstd_compress_pages, | |
480 | .init_decompress_ctx = zstd_init_decompress_ctx, | |
481 | .destroy_decompress_ctx = zstd_destroy_decompress_ctx, | |
482 | .decompress_pages = zstd_decompress_pages, | |
483 | }; | |
484 | #endif | |
485 | ||
6d92b201 CY |
486 | #ifdef CONFIG_F2FS_FS_LZO |
487 | #ifdef CONFIG_F2FS_FS_LZORLE | |
488 | static int lzorle_compress_pages(struct compress_ctx *cc) | |
489 | { | |
490 | int ret; | |
491 | ||
492 | ret = lzorle1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, | |
493 | &cc->clen, cc->private); | |
494 | if (ret != LZO_E_OK) { | |
495 | printk_ratelimited("%sF2FS-fs (%s): lzo-rle compress failed, ret:%d\n", | |
496 | KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, ret); | |
497 | return -EIO; | |
498 | } | |
499 | return 0; | |
500 | } | |
501 | ||
502 | static const struct f2fs_compress_ops f2fs_lzorle_ops = { | |
503 | .init_compress_ctx = lzo_init_compress_ctx, | |
504 | .destroy_compress_ctx = lzo_destroy_compress_ctx, | |
505 | .compress_pages = lzorle_compress_pages, | |
506 | .decompress_pages = lzo_decompress_pages, | |
507 | }; | |
508 | #endif | |
509 | #endif | |
510 | ||
4c8ff709 CY |
511 | static const struct f2fs_compress_ops *f2fs_cops[COMPRESS_MAX] = { |
512 | #ifdef CONFIG_F2FS_FS_LZO | |
513 | &f2fs_lzo_ops, | |
514 | #else | |
515 | NULL, | |
516 | #endif | |
517 | #ifdef CONFIG_F2FS_FS_LZ4 | |
518 | &f2fs_lz4_ops, | |
519 | #else | |
520 | NULL, | |
521 | #endif | |
50cfa66f CY |
522 | #ifdef CONFIG_F2FS_FS_ZSTD |
523 | &f2fs_zstd_ops, | |
524 | #else | |
525 | NULL, | |
526 | #endif | |
6d92b201 CY |
527 | #if defined(CONFIG_F2FS_FS_LZO) && defined(CONFIG_F2FS_FS_LZORLE) |
528 | &f2fs_lzorle_ops, | |
529 | #else | |
530 | NULL, | |
531 | #endif | |
4c8ff709 CY |
532 | }; |
533 | ||
534 | bool f2fs_is_compress_backend_ready(struct inode *inode) | |
535 | { | |
536 | if (!f2fs_compressed_file(inode)) | |
537 | return true; | |
538 | return f2fs_cops[F2FS_I(inode)->i_compress_algorithm]; | |
539 | } | |
540 | ||
99bbe307 | 541 | static mempool_t *compress_page_pool; |
5e6bbde9 CY |
542 | static int num_compress_pages = 512; |
543 | module_param(num_compress_pages, uint, 0444); | |
544 | MODULE_PARM_DESC(num_compress_pages, | |
545 | "Number of intermediate compress pages to preallocate"); | |
546 | ||
547 | int f2fs_init_compress_mempool(void) | |
548 | { | |
549 | compress_page_pool = mempool_create_page_pool(num_compress_pages, 0); | |
550 | if (!compress_page_pool) | |
551 | return -ENOMEM; | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | void f2fs_destroy_compress_mempool(void) | |
557 | { | |
558 | mempool_destroy(compress_page_pool); | |
559 | } | |
560 | ||
561 | static struct page *f2fs_compress_alloc_page(void) | |
4c8ff709 CY |
562 | { |
563 | struct page *page; | |
564 | ||
5e6bbde9 | 565 | page = mempool_alloc(compress_page_pool, GFP_NOFS); |
4c8ff709 | 566 | lock_page(page); |
5e6bbde9 | 567 | |
4c8ff709 CY |
568 | return page; |
569 | } | |
570 | ||
5e6bbde9 CY |
571 | static void f2fs_compress_free_page(struct page *page) |
572 | { | |
573 | if (!page) | |
574 | return; | |
575 | set_page_private(page, (unsigned long)NULL); | |
576 | ClearPagePrivate(page); | |
577 | page->mapping = NULL; | |
578 | unlock_page(page); | |
579 | mempool_free(page, compress_page_pool); | |
580 | } | |
581 | ||
6fcaebac DJ |
582 | #define MAX_VMAP_RETRIES 3 |
583 | ||
584 | static void *f2fs_vmap(struct page **pages, unsigned int count) | |
585 | { | |
586 | int i; | |
587 | void *buf = NULL; | |
588 | ||
589 | for (i = 0; i < MAX_VMAP_RETRIES; i++) { | |
590 | buf = vm_map_ram(pages, count, -1); | |
591 | if (buf) | |
592 | break; | |
593 | vm_unmap_aliases(); | |
594 | } | |
595 | return buf; | |
596 | } | |
597 | ||
4c8ff709 CY |
598 | static int f2fs_compress_pages(struct compress_ctx *cc) |
599 | { | |
4c8ff709 CY |
600 | struct f2fs_inode_info *fi = F2FS_I(cc->inode); |
601 | const struct f2fs_compress_ops *cops = | |
602 | f2fs_cops[fi->i_compress_algorithm]; | |
31083031 CY |
603 | unsigned int max_len, new_nr_cpages; |
604 | struct page **new_cpages; | |
b28f047b | 605 | u32 chksum = 0; |
4c8ff709 CY |
606 | int i, ret; |
607 | ||
608 | trace_f2fs_compress_pages_start(cc->inode, cc->cluster_idx, | |
609 | cc->cluster_size, fi->i_compress_algorithm); | |
610 | ||
23b1faaa CY |
611 | if (cops->init_compress_ctx) { |
612 | ret = cops->init_compress_ctx(cc); | |
613 | if (ret) | |
614 | goto out; | |
615 | } | |
4c8ff709 CY |
616 | |
617 | max_len = COMPRESS_HEADER_SIZE + cc->clen; | |
618 | cc->nr_cpages = DIV_ROUND_UP(max_len, PAGE_SIZE); | |
619 | ||
31083031 | 620 | cc->cpages = page_array_alloc(cc->inode, cc->nr_cpages); |
4c8ff709 CY |
621 | if (!cc->cpages) { |
622 | ret = -ENOMEM; | |
623 | goto destroy_compress_ctx; | |
624 | } | |
625 | ||
626 | for (i = 0; i < cc->nr_cpages; i++) { | |
5e6bbde9 | 627 | cc->cpages[i] = f2fs_compress_alloc_page(); |
4c8ff709 CY |
628 | if (!cc->cpages[i]) { |
629 | ret = -ENOMEM; | |
630 | goto out_free_cpages; | |
631 | } | |
632 | } | |
633 | ||
6fcaebac | 634 | cc->rbuf = f2fs_vmap(cc->rpages, cc->cluster_size); |
4c8ff709 CY |
635 | if (!cc->rbuf) { |
636 | ret = -ENOMEM; | |
637 | goto out_free_cpages; | |
638 | } | |
639 | ||
6fcaebac | 640 | cc->cbuf = f2fs_vmap(cc->cpages, cc->nr_cpages); |
4c8ff709 CY |
641 | if (!cc->cbuf) { |
642 | ret = -ENOMEM; | |
643 | goto out_vunmap_rbuf; | |
644 | } | |
645 | ||
646 | ret = cops->compress_pages(cc); | |
647 | if (ret) | |
648 | goto out_vunmap_cbuf; | |
649 | ||
650 | max_len = PAGE_SIZE * (cc->cluster_size - 1) - COMPRESS_HEADER_SIZE; | |
651 | ||
652 | if (cc->clen > max_len) { | |
653 | ret = -EAGAIN; | |
654 | goto out_vunmap_cbuf; | |
655 | } | |
656 | ||
657 | cc->cbuf->clen = cpu_to_le32(cc->clen); | |
4c8ff709 | 658 | |
b28f047b CY |
659 | if (fi->i_compress_flag & 1 << COMPRESS_CHKSUM) |
660 | chksum = f2fs_crc32(F2FS_I_SB(cc->inode), | |
661 | cc->cbuf->cdata, cc->clen); | |
662 | cc->cbuf->chksum = cpu_to_le32(chksum); | |
663 | ||
4c8ff709 CY |
664 | for (i = 0; i < COMPRESS_DATA_RESERVED_SIZE; i++) |
665 | cc->cbuf->reserved[i] = cpu_to_le32(0); | |
666 | ||
31083031 CY |
667 | new_nr_cpages = DIV_ROUND_UP(cc->clen + COMPRESS_HEADER_SIZE, PAGE_SIZE); |
668 | ||
669 | /* Now we're going to cut unnecessary tail pages */ | |
670 | new_cpages = page_array_alloc(cc->inode, new_nr_cpages); | |
671 | if (!new_cpages) { | |
672 | ret = -ENOMEM; | |
673 | goto out_vunmap_cbuf; | |
674 | } | |
7fa6d598 EB |
675 | |
676 | /* zero out any unused part of the last page */ | |
677 | memset(&cc->cbuf->cdata[cc->clen], 0, | |
31083031 CY |
678 | (new_nr_cpages * PAGE_SIZE) - |
679 | (cc->clen + COMPRESS_HEADER_SIZE)); | |
7fa6d598 | 680 | |
6fcaebac DJ |
681 | vm_unmap_ram(cc->cbuf, cc->nr_cpages); |
682 | vm_unmap_ram(cc->rbuf, cc->cluster_size); | |
4c8ff709 | 683 | |
31083031 CY |
684 | for (i = 0; i < cc->nr_cpages; i++) { |
685 | if (i < new_nr_cpages) { | |
686 | new_cpages[i] = cc->cpages[i]; | |
687 | continue; | |
688 | } | |
5e6bbde9 | 689 | f2fs_compress_free_page(cc->cpages[i]); |
4c8ff709 CY |
690 | cc->cpages[i] = NULL; |
691 | } | |
692 | ||
23b1faaa CY |
693 | if (cops->destroy_compress_ctx) |
694 | cops->destroy_compress_ctx(cc); | |
09ff4801 | 695 | |
31083031 CY |
696 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
697 | cc->cpages = new_cpages; | |
698 | cc->nr_cpages = new_nr_cpages; | |
4c8ff709 CY |
699 | |
700 | trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, | |
701 | cc->clen, ret); | |
702 | return 0; | |
703 | ||
704 | out_vunmap_cbuf: | |
6fcaebac | 705 | vm_unmap_ram(cc->cbuf, cc->nr_cpages); |
4c8ff709 | 706 | out_vunmap_rbuf: |
6fcaebac | 707 | vm_unmap_ram(cc->rbuf, cc->cluster_size); |
4c8ff709 CY |
708 | out_free_cpages: |
709 | for (i = 0; i < cc->nr_cpages; i++) { | |
710 | if (cc->cpages[i]) | |
5e6bbde9 | 711 | f2fs_compress_free_page(cc->cpages[i]); |
4c8ff709 | 712 | } |
31083031 | 713 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
4c8ff709 CY |
714 | cc->cpages = NULL; |
715 | destroy_compress_ctx: | |
23b1faaa CY |
716 | if (cops->destroy_compress_ctx) |
717 | cops->destroy_compress_ctx(cc); | |
4c8ff709 CY |
718 | out: |
719 | trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, | |
720 | cc->clen, ret); | |
721 | return ret; | |
722 | } | |
723 | ||
724 | void f2fs_decompress_pages(struct bio *bio, struct page *page, bool verity) | |
725 | { | |
726 | struct decompress_io_ctx *dic = | |
727 | (struct decompress_io_ctx *)page_private(page); | |
728 | struct f2fs_sb_info *sbi = F2FS_I_SB(dic->inode); | |
729 | struct f2fs_inode_info *fi= F2FS_I(dic->inode); | |
730 | const struct f2fs_compress_ops *cops = | |
731 | f2fs_cops[fi->i_compress_algorithm]; | |
732 | int ret; | |
b2f57a8e | 733 | int i; |
4c8ff709 CY |
734 | |
735 | dec_page_count(sbi, F2FS_RD_DATA); | |
736 | ||
737 | if (bio->bi_status || PageError(page)) | |
738 | dic->failed = true; | |
739 | ||
e6c3948d | 740 | if (atomic_dec_return(&dic->pending_pages)) |
4c8ff709 CY |
741 | return; |
742 | ||
743 | trace_f2fs_decompress_pages_start(dic->inode, dic->cluster_idx, | |
744 | dic->cluster_size, fi->i_compress_algorithm); | |
745 | ||
746 | /* submit partial compressed pages */ | |
747 | if (dic->failed) { | |
748 | ret = -EIO; | |
749 | goto out_free_dic; | |
750 | } | |
751 | ||
31083031 | 752 | dic->tpages = page_array_alloc(dic->inode, dic->cluster_size); |
b2f57a8e CY |
753 | if (!dic->tpages) { |
754 | ret = -ENOMEM; | |
755 | goto out_free_dic; | |
756 | } | |
757 | ||
758 | for (i = 0; i < dic->cluster_size; i++) { | |
759 | if (dic->rpages[i]) { | |
760 | dic->tpages[i] = dic->rpages[i]; | |
761 | continue; | |
762 | } | |
763 | ||
764 | dic->tpages[i] = f2fs_compress_alloc_page(); | |
765 | if (!dic->tpages[i]) { | |
766 | ret = -ENOMEM; | |
767 | goto out_free_dic; | |
768 | } | |
769 | } | |
770 | ||
23b1faaa CY |
771 | if (cops->init_decompress_ctx) { |
772 | ret = cops->init_decompress_ctx(dic); | |
773 | if (ret) | |
774 | goto out_free_dic; | |
775 | } | |
776 | ||
6fcaebac | 777 | dic->rbuf = f2fs_vmap(dic->tpages, dic->cluster_size); |
4c8ff709 CY |
778 | if (!dic->rbuf) { |
779 | ret = -ENOMEM; | |
23b1faaa | 780 | goto destroy_decompress_ctx; |
4c8ff709 CY |
781 | } |
782 | ||
6fcaebac | 783 | dic->cbuf = f2fs_vmap(dic->cpages, dic->nr_cpages); |
4c8ff709 CY |
784 | if (!dic->cbuf) { |
785 | ret = -ENOMEM; | |
786 | goto out_vunmap_rbuf; | |
787 | } | |
788 | ||
789 | dic->clen = le32_to_cpu(dic->cbuf->clen); | |
790 | dic->rlen = PAGE_SIZE << dic->log_cluster_size; | |
791 | ||
792 | if (dic->clen > PAGE_SIZE * dic->nr_cpages - COMPRESS_HEADER_SIZE) { | |
793 | ret = -EFSCORRUPTED; | |
794 | goto out_vunmap_cbuf; | |
795 | } | |
796 | ||
797 | ret = cops->decompress_pages(dic); | |
798 | ||
75e91c88 | 799 | if (!ret && (fi->i_compress_flag & 1 << COMPRESS_CHKSUM)) { |
b28f047b CY |
800 | u32 provided = le32_to_cpu(dic->cbuf->chksum); |
801 | u32 calculated = f2fs_crc32(sbi, dic->cbuf->cdata, dic->clen); | |
802 | ||
803 | if (provided != calculated) { | |
804 | if (!is_inode_flag_set(dic->inode, FI_COMPRESS_CORRUPT)) { | |
805 | set_inode_flag(dic->inode, FI_COMPRESS_CORRUPT); | |
806 | printk_ratelimited( | |
807 | "%sF2FS-fs (%s): checksum invalid, nid = %lu, %x vs %x", | |
808 | KERN_INFO, sbi->sb->s_id, dic->inode->i_ino, | |
809 | provided, calculated); | |
810 | } | |
811 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
b28f047b CY |
812 | } |
813 | } | |
814 | ||
4c8ff709 | 815 | out_vunmap_cbuf: |
6fcaebac | 816 | vm_unmap_ram(dic->cbuf, dic->nr_cpages); |
4c8ff709 | 817 | out_vunmap_rbuf: |
6fcaebac | 818 | vm_unmap_ram(dic->rbuf, dic->cluster_size); |
23b1faaa CY |
819 | destroy_decompress_ctx: |
820 | if (cops->destroy_decompress_ctx) | |
821 | cops->destroy_decompress_ctx(dic); | |
4c8ff709 CY |
822 | out_free_dic: |
823 | if (!verity) | |
824 | f2fs_decompress_end_io(dic->rpages, dic->cluster_size, | |
825 | ret, false); | |
826 | ||
827 | trace_f2fs_decompress_pages_end(dic->inode, dic->cluster_idx, | |
828 | dic->clen, ret); | |
829 | if (!verity) | |
830 | f2fs_free_dic(dic); | |
831 | } | |
832 | ||
833 | static bool is_page_in_cluster(struct compress_ctx *cc, pgoff_t index) | |
834 | { | |
835 | if (cc->cluster_idx == NULL_CLUSTER) | |
836 | return true; | |
837 | return cc->cluster_idx == cluster_idx(cc, index); | |
838 | } | |
839 | ||
840 | bool f2fs_cluster_is_empty(struct compress_ctx *cc) | |
841 | { | |
842 | return cc->nr_rpages == 0; | |
843 | } | |
844 | ||
845 | static bool f2fs_cluster_is_full(struct compress_ctx *cc) | |
846 | { | |
847 | return cc->cluster_size == cc->nr_rpages; | |
848 | } | |
849 | ||
850 | bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index) | |
851 | { | |
852 | if (f2fs_cluster_is_empty(cc)) | |
853 | return true; | |
854 | return is_page_in_cluster(cc, index); | |
855 | } | |
856 | ||
857 | static bool __cluster_may_compress(struct compress_ctx *cc) | |
858 | { | |
859 | struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); | |
860 | loff_t i_size = i_size_read(cc->inode); | |
861 | unsigned nr_pages = DIV_ROUND_UP(i_size, PAGE_SIZE); | |
862 | int i; | |
863 | ||
864 | for (i = 0; i < cc->cluster_size; i++) { | |
865 | struct page *page = cc->rpages[i]; | |
866 | ||
867 | f2fs_bug_on(sbi, !page); | |
868 | ||
869 | if (unlikely(f2fs_cp_error(sbi))) | |
870 | return false; | |
871 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
872 | return false; | |
873 | ||
874 | /* beyond EOF */ | |
875 | if (page->index >= nr_pages) | |
876 | return false; | |
877 | } | |
878 | return true; | |
879 | } | |
880 | ||
1a67cbe1 | 881 | static int __f2fs_cluster_blocks(struct compress_ctx *cc, bool compr) |
4c8ff709 CY |
882 | { |
883 | struct dnode_of_data dn; | |
884 | int ret; | |
885 | ||
886 | set_new_dnode(&dn, cc->inode, NULL, NULL, 0); | |
887 | ret = f2fs_get_dnode_of_data(&dn, start_idx_of_cluster(cc), | |
888 | LOOKUP_NODE); | |
889 | if (ret) { | |
890 | if (ret == -ENOENT) | |
891 | ret = 0; | |
892 | goto fail; | |
893 | } | |
894 | ||
895 | if (dn.data_blkaddr == COMPRESS_ADDR) { | |
896 | int i; | |
897 | ||
898 | ret = 1; | |
899 | for (i = 1; i < cc->cluster_size; i++) { | |
900 | block_t blkaddr; | |
901 | ||
a2ced1ce | 902 | blkaddr = data_blkaddr(dn.inode, |
4c8ff709 | 903 | dn.node_page, dn.ofs_in_node + i); |
1a67cbe1 CY |
904 | if (compr) { |
905 | if (__is_valid_data_blkaddr(blkaddr)) | |
906 | ret++; | |
907 | } else { | |
908 | if (blkaddr != NULL_ADDR) | |
909 | ret++; | |
910 | } | |
4c8ff709 CY |
911 | } |
912 | } | |
913 | fail: | |
914 | f2fs_put_dnode(&dn); | |
915 | return ret; | |
916 | } | |
917 | ||
1a67cbe1 CY |
918 | /* return # of compressed blocks in compressed cluster */ |
919 | static int f2fs_compressed_blocks(struct compress_ctx *cc) | |
920 | { | |
921 | return __f2fs_cluster_blocks(cc, true); | |
922 | } | |
923 | ||
924 | /* return # of valid blocks in compressed cluster */ | |
d078319d | 925 | static int f2fs_cluster_blocks(struct compress_ctx *cc) |
1a67cbe1 CY |
926 | { |
927 | return __f2fs_cluster_blocks(cc, false); | |
928 | } | |
929 | ||
4c8ff709 CY |
930 | int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index) |
931 | { | |
932 | struct compress_ctx cc = { | |
933 | .inode = inode, | |
934 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
935 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
936 | .cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size, | |
937 | }; | |
938 | ||
d078319d | 939 | return f2fs_cluster_blocks(&cc); |
4c8ff709 CY |
940 | } |
941 | ||
942 | static bool cluster_may_compress(struct compress_ctx *cc) | |
943 | { | |
602a16d5 | 944 | if (!f2fs_need_compress_data(cc->inode)) |
4c8ff709 CY |
945 | return false; |
946 | if (f2fs_is_atomic_file(cc->inode)) | |
947 | return false; | |
948 | if (f2fs_is_mmap_file(cc->inode)) | |
949 | return false; | |
950 | if (!f2fs_cluster_is_full(cc)) | |
951 | return false; | |
dc35d73a CY |
952 | if (unlikely(f2fs_cp_error(F2FS_I_SB(cc->inode)))) |
953 | return false; | |
4c8ff709 CY |
954 | return __cluster_may_compress(cc); |
955 | } | |
956 | ||
957 | static void set_cluster_writeback(struct compress_ctx *cc) | |
958 | { | |
959 | int i; | |
960 | ||
961 | for (i = 0; i < cc->cluster_size; i++) { | |
962 | if (cc->rpages[i]) | |
963 | set_page_writeback(cc->rpages[i]); | |
964 | } | |
965 | } | |
966 | ||
967 | static void set_cluster_dirty(struct compress_ctx *cc) | |
968 | { | |
969 | int i; | |
970 | ||
971 | for (i = 0; i < cc->cluster_size; i++) | |
972 | if (cc->rpages[i]) | |
973 | set_page_dirty(cc->rpages[i]); | |
974 | } | |
975 | ||
976 | static int prepare_compress_overwrite(struct compress_ctx *cc, | |
977 | struct page **pagep, pgoff_t index, void **fsdata) | |
978 | { | |
979 | struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); | |
980 | struct address_space *mapping = cc->inode->i_mapping; | |
981 | struct page *page; | |
982 | struct dnode_of_data dn; | |
983 | sector_t last_block_in_bio; | |
984 | unsigned fgp_flag = FGP_LOCK | FGP_WRITE | FGP_CREAT; | |
985 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
986 | int i, ret; | |
987 | bool prealloc; | |
988 | ||
989 | retry: | |
d078319d | 990 | ret = f2fs_cluster_blocks(cc); |
4c8ff709 CY |
991 | if (ret <= 0) |
992 | return ret; | |
993 | ||
994 | /* compressed case */ | |
995 | prealloc = (ret < cc->cluster_size); | |
996 | ||
997 | ret = f2fs_init_compress_ctx(cc); | |
998 | if (ret) | |
999 | return ret; | |
1000 | ||
1001 | /* keep page reference to avoid page reclaim */ | |
1002 | for (i = 0; i < cc->cluster_size; i++) { | |
1003 | page = f2fs_pagecache_get_page(mapping, start_idx + i, | |
1004 | fgp_flag, GFP_NOFS); | |
1005 | if (!page) { | |
1006 | ret = -ENOMEM; | |
1007 | goto unlock_pages; | |
1008 | } | |
1009 | ||
1010 | if (PageUptodate(page)) | |
1011 | unlock_page(page); | |
1012 | else | |
1013 | f2fs_compress_ctx_add_page(cc, page); | |
1014 | } | |
1015 | ||
1016 | if (!f2fs_cluster_is_empty(cc)) { | |
1017 | struct bio *bio = NULL; | |
1018 | ||
1019 | ret = f2fs_read_multi_pages(cc, &bio, cc->cluster_size, | |
0683728a | 1020 | &last_block_in_bio, false, true); |
4c8ff709 CY |
1021 | f2fs_destroy_compress_ctx(cc); |
1022 | if (ret) | |
1023 | goto release_pages; | |
1024 | if (bio) | |
1025 | f2fs_submit_bio(sbi, bio, DATA); | |
1026 | ||
1027 | ret = f2fs_init_compress_ctx(cc); | |
1028 | if (ret) | |
1029 | goto release_pages; | |
1030 | } | |
1031 | ||
1032 | for (i = 0; i < cc->cluster_size; i++) { | |
1033 | f2fs_bug_on(sbi, cc->rpages[i]); | |
1034 | ||
1035 | page = find_lock_page(mapping, start_idx + i); | |
1036 | f2fs_bug_on(sbi, !page); | |
1037 | ||
1038 | f2fs_wait_on_page_writeback(page, DATA, true, true); | |
1039 | ||
1040 | f2fs_compress_ctx_add_page(cc, page); | |
1041 | f2fs_put_page(page, 0); | |
1042 | ||
1043 | if (!PageUptodate(page)) { | |
1044 | f2fs_unlock_rpages(cc, i + 1); | |
bc67c5d0 | 1045 | f2fs_put_rpages_mapping(mapping, start_idx, |
4c8ff709 CY |
1046 | cc->cluster_size); |
1047 | f2fs_destroy_compress_ctx(cc); | |
1048 | goto retry; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | if (prealloc) { | |
0ef81833 | 1053 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); |
4c8ff709 CY |
1054 | |
1055 | set_new_dnode(&dn, cc->inode, NULL, NULL, 0); | |
1056 | ||
1057 | for (i = cc->cluster_size - 1; i > 0; i--) { | |
1058 | ret = f2fs_get_block(&dn, start_idx + i); | |
1059 | if (ret) { | |
1060 | i = cc->cluster_size; | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | if (dn.data_blkaddr != NEW_ADDR) | |
1065 | break; | |
1066 | } | |
1067 | ||
0ef81833 | 1068 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); |
4c8ff709 CY |
1069 | } |
1070 | ||
1071 | if (likely(!ret)) { | |
1072 | *fsdata = cc->rpages; | |
1073 | *pagep = cc->rpages[offset_in_cluster(cc, index)]; | |
1074 | return cc->cluster_size; | |
1075 | } | |
1076 | ||
1077 | unlock_pages: | |
1078 | f2fs_unlock_rpages(cc, i); | |
1079 | release_pages: | |
bc67c5d0 | 1080 | f2fs_put_rpages_mapping(mapping, start_idx, i); |
4c8ff709 CY |
1081 | f2fs_destroy_compress_ctx(cc); |
1082 | return ret; | |
1083 | } | |
1084 | ||
1085 | int f2fs_prepare_compress_overwrite(struct inode *inode, | |
1086 | struct page **pagep, pgoff_t index, void **fsdata) | |
1087 | { | |
1088 | struct compress_ctx cc = { | |
1089 | .inode = inode, | |
1090 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
1091 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
1092 | .cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size, | |
1093 | .rpages = NULL, | |
1094 | .nr_rpages = 0, | |
1095 | }; | |
1096 | ||
1097 | return prepare_compress_overwrite(&cc, pagep, index, fsdata); | |
1098 | } | |
1099 | ||
1100 | bool f2fs_compress_write_end(struct inode *inode, void *fsdata, | |
1101 | pgoff_t index, unsigned copied) | |
1102 | ||
1103 | { | |
1104 | struct compress_ctx cc = { | |
31083031 | 1105 | .inode = inode, |
4c8ff709 CY |
1106 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, |
1107 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
1108 | .rpages = fsdata, | |
1109 | }; | |
1110 | bool first_index = (index == cc.rpages[0]->index); | |
1111 | ||
1112 | if (copied) | |
1113 | set_cluster_dirty(&cc); | |
1114 | ||
1115 | f2fs_put_rpages_wbc(&cc, NULL, false, 1); | |
1116 | f2fs_destroy_compress_ctx(&cc); | |
1117 | ||
1118 | return first_index; | |
1119 | } | |
1120 | ||
3265d3db CY |
1121 | int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock) |
1122 | { | |
1123 | void *fsdata = NULL; | |
1124 | struct page *pagep; | |
1125 | int log_cluster_size = F2FS_I(inode)->i_log_cluster_size; | |
1126 | pgoff_t start_idx = from >> (PAGE_SHIFT + log_cluster_size) << | |
1127 | log_cluster_size; | |
1128 | int err; | |
1129 | ||
1130 | err = f2fs_is_compressed_cluster(inode, start_idx); | |
1131 | if (err < 0) | |
1132 | return err; | |
1133 | ||
1134 | /* truncate normal cluster */ | |
1135 | if (!err) | |
1136 | return f2fs_do_truncate_blocks(inode, from, lock); | |
1137 | ||
1138 | /* truncate compressed cluster */ | |
1139 | err = f2fs_prepare_compress_overwrite(inode, &pagep, | |
1140 | start_idx, &fsdata); | |
1141 | ||
1142 | /* should not be a normal cluster */ | |
1143 | f2fs_bug_on(F2FS_I_SB(inode), err == 0); | |
1144 | ||
1145 | if (err <= 0) | |
1146 | return err; | |
1147 | ||
1148 | if (err > 0) { | |
1149 | struct page **rpages = fsdata; | |
1150 | int cluster_size = F2FS_I(inode)->i_cluster_size; | |
1151 | int i; | |
1152 | ||
1153 | for (i = cluster_size - 1; i >= 0; i--) { | |
1154 | loff_t start = rpages[i]->index << PAGE_SHIFT; | |
1155 | ||
1156 | if (from <= start) { | |
1157 | zero_user_segment(rpages[i], 0, PAGE_SIZE); | |
1158 | } else { | |
1159 | zero_user_segment(rpages[i], from - start, | |
1160 | PAGE_SIZE); | |
1161 | break; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | f2fs_compress_write_end(inode, fsdata, start_idx, true); | |
1166 | } | |
1167 | return 0; | |
1168 | } | |
1169 | ||
4c8ff709 CY |
1170 | static int f2fs_write_compressed_pages(struct compress_ctx *cc, |
1171 | int *submitted, | |
1172 | struct writeback_control *wbc, | |
1173 | enum iostat_type io_type) | |
1174 | { | |
1175 | struct inode *inode = cc->inode; | |
1176 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1177 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1178 | struct f2fs_io_info fio = { | |
1179 | .sbi = sbi, | |
1180 | .ino = cc->inode->i_ino, | |
1181 | .type = DATA, | |
1182 | .op = REQ_OP_WRITE, | |
1183 | .op_flags = wbc_to_write_flags(wbc), | |
1184 | .old_blkaddr = NEW_ADDR, | |
1185 | .page = NULL, | |
1186 | .encrypted_page = NULL, | |
1187 | .compressed_page = NULL, | |
1188 | .submitted = false, | |
4c8ff709 CY |
1189 | .io_type = io_type, |
1190 | .io_wbc = wbc, | |
27aacd28 | 1191 | .encrypted = fscrypt_inode_uses_fs_layer_crypto(cc->inode), |
4c8ff709 CY |
1192 | }; |
1193 | struct dnode_of_data dn; | |
1194 | struct node_info ni; | |
1195 | struct compress_io_ctx *cic; | |
1196 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
1197 | unsigned int last_index = cc->cluster_size - 1; | |
1198 | loff_t psize; | |
1199 | int i, err; | |
1200 | ||
79963d96 CY |
1201 | if (IS_NOQUOTA(inode)) { |
1202 | /* | |
1203 | * We need to wait for node_write to avoid block allocation during | |
1204 | * checkpoint. This can only happen to quota writes which can cause | |
1205 | * the below discard race condition. | |
1206 | */ | |
1207 | down_read(&sbi->node_write); | |
1208 | } else if (!f2fs_trylock_op(sbi)) { | |
31083031 | 1209 | goto out_free; |
79963d96 | 1210 | } |
4c8ff709 | 1211 | |
df77fbd8 | 1212 | set_new_dnode(&dn, cc->inode, NULL, NULL, 0); |
4c8ff709 CY |
1213 | |
1214 | err = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
1215 | if (err) | |
1216 | goto out_unlock_op; | |
1217 | ||
1218 | for (i = 0; i < cc->cluster_size; i++) { | |
a2ced1ce | 1219 | if (data_blkaddr(dn.inode, dn.node_page, |
4c8ff709 CY |
1220 | dn.ofs_in_node + i) == NULL_ADDR) |
1221 | goto out_put_dnode; | |
1222 | } | |
1223 | ||
1224 | psize = (loff_t)(cc->rpages[last_index]->index + 1) << PAGE_SHIFT; | |
1225 | ||
1226 | err = f2fs_get_node_info(fio.sbi, dn.nid, &ni); | |
1227 | if (err) | |
1228 | goto out_put_dnode; | |
1229 | ||
1230 | fio.version = ni.version; | |
1231 | ||
c68d6c88 | 1232 | cic = kmem_cache_zalloc(cic_entry_slab, GFP_NOFS); |
4c8ff709 CY |
1233 | if (!cic) |
1234 | goto out_put_dnode; | |
1235 | ||
1236 | cic->magic = F2FS_COMPRESSED_PAGE_MAGIC; | |
1237 | cic->inode = inode; | |
e6c3948d | 1238 | atomic_set(&cic->pending_pages, cc->nr_cpages); |
31083031 | 1239 | cic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 CY |
1240 | if (!cic->rpages) |
1241 | goto out_put_cic; | |
1242 | ||
1243 | cic->nr_rpages = cc->cluster_size; | |
1244 | ||
1245 | for (i = 0; i < cc->nr_cpages; i++) { | |
1246 | f2fs_set_compressed_page(cc->cpages[i], inode, | |
887347a0 | 1247 | cc->rpages[i + 1]->index, cic); |
4c8ff709 | 1248 | fio.compressed_page = cc->cpages[i]; |
f567adb0 CY |
1249 | |
1250 | fio.old_blkaddr = data_blkaddr(dn.inode, dn.node_page, | |
1251 | dn.ofs_in_node + i + 1); | |
1252 | ||
1253 | /* wait for GCed page writeback via META_MAPPING */ | |
1254 | f2fs_wait_on_block_writeback(inode, fio.old_blkaddr); | |
1255 | ||
4c8ff709 CY |
1256 | if (fio.encrypted) { |
1257 | fio.page = cc->rpages[i + 1]; | |
1258 | err = f2fs_encrypt_one_page(&fio); | |
1259 | if (err) | |
1260 | goto out_destroy_crypt; | |
1261 | cc->cpages[i] = fio.encrypted_page; | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | set_cluster_writeback(cc); | |
1266 | ||
1267 | for (i = 0; i < cc->cluster_size; i++) | |
1268 | cic->rpages[i] = cc->rpages[i]; | |
1269 | ||
1270 | for (i = 0; i < cc->cluster_size; i++, dn.ofs_in_node++) { | |
1271 | block_t blkaddr; | |
1272 | ||
a2ced1ce | 1273 | blkaddr = f2fs_data_blkaddr(&dn); |
95978caa | 1274 | fio.page = cc->rpages[i]; |
4c8ff709 CY |
1275 | fio.old_blkaddr = blkaddr; |
1276 | ||
1277 | /* cluster header */ | |
1278 | if (i == 0) { | |
1279 | if (blkaddr == COMPRESS_ADDR) | |
1280 | fio.compr_blocks++; | |
1281 | if (__is_valid_data_blkaddr(blkaddr)) | |
1282 | f2fs_invalidate_blocks(sbi, blkaddr); | |
1283 | f2fs_update_data_blkaddr(&dn, COMPRESS_ADDR); | |
1284 | goto unlock_continue; | |
1285 | } | |
1286 | ||
1287 | if (fio.compr_blocks && __is_valid_data_blkaddr(blkaddr)) | |
1288 | fio.compr_blocks++; | |
1289 | ||
1290 | if (i > cc->nr_cpages) { | |
1291 | if (__is_valid_data_blkaddr(blkaddr)) { | |
1292 | f2fs_invalidate_blocks(sbi, blkaddr); | |
1293 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); | |
1294 | } | |
1295 | goto unlock_continue; | |
1296 | } | |
1297 | ||
1298 | f2fs_bug_on(fio.sbi, blkaddr == NULL_ADDR); | |
1299 | ||
1300 | if (fio.encrypted) | |
1301 | fio.encrypted_page = cc->cpages[i - 1]; | |
1302 | else | |
1303 | fio.compressed_page = cc->cpages[i - 1]; | |
1304 | ||
1305 | cc->cpages[i - 1] = NULL; | |
1306 | f2fs_outplace_write_data(&dn, &fio); | |
1307 | (*submitted)++; | |
1308 | unlock_continue: | |
1309 | inode_dec_dirty_pages(cc->inode); | |
1310 | unlock_page(fio.page); | |
1311 | } | |
1312 | ||
1313 | if (fio.compr_blocks) | |
1314 | f2fs_i_compr_blocks_update(inode, fio.compr_blocks - 1, false); | |
1315 | f2fs_i_compr_blocks_update(inode, cc->nr_cpages, true); | |
1316 | ||
1317 | set_inode_flag(cc->inode, FI_APPEND_WRITE); | |
1318 | if (cc->cluster_idx == 0) | |
1319 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
1320 | ||
1321 | f2fs_put_dnode(&dn); | |
79963d96 CY |
1322 | if (IS_NOQUOTA(inode)) |
1323 | up_read(&sbi->node_write); | |
1324 | else | |
435cbab9 | 1325 | f2fs_unlock_op(sbi); |
4c8ff709 | 1326 | |
c10c9820 | 1327 | spin_lock(&fi->i_size_lock); |
4c8ff709 CY |
1328 | if (fi->last_disk_size < psize) |
1329 | fi->last_disk_size = psize; | |
c10c9820 | 1330 | spin_unlock(&fi->i_size_lock); |
4c8ff709 CY |
1331 | |
1332 | f2fs_put_rpages(cc); | |
31083031 CY |
1333 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
1334 | cc->cpages = NULL; | |
4c8ff709 CY |
1335 | f2fs_destroy_compress_ctx(cc); |
1336 | return 0; | |
1337 | ||
1338 | out_destroy_crypt: | |
31083031 | 1339 | page_array_free(cc->inode, cic->rpages, cc->cluster_size); |
4c8ff709 CY |
1340 | |
1341 | for (--i; i >= 0; i--) | |
1342 | fscrypt_finalize_bounce_page(&cc->cpages[i]); | |
1343 | for (i = 0; i < cc->nr_cpages; i++) { | |
1344 | if (!cc->cpages[i]) | |
1345 | continue; | |
1346 | f2fs_put_page(cc->cpages[i], 1); | |
1347 | } | |
1348 | out_put_cic: | |
c68d6c88 | 1349 | kmem_cache_free(cic_entry_slab, cic); |
4c8ff709 CY |
1350 | out_put_dnode: |
1351 | f2fs_put_dnode(&dn); | |
1352 | out_unlock_op: | |
79963d96 CY |
1353 | if (IS_NOQUOTA(inode)) |
1354 | up_read(&sbi->node_write); | |
1355 | else | |
435cbab9 | 1356 | f2fs_unlock_op(sbi); |
31083031 CY |
1357 | out_free: |
1358 | page_array_free(cc->inode, cc->cpages, cc->nr_cpages); | |
1359 | cc->cpages = NULL; | |
4c8ff709 CY |
1360 | return -EAGAIN; |
1361 | } | |
1362 | ||
1363 | void f2fs_compress_write_end_io(struct bio *bio, struct page *page) | |
1364 | { | |
1365 | struct f2fs_sb_info *sbi = bio->bi_private; | |
1366 | struct compress_io_ctx *cic = | |
1367 | (struct compress_io_ctx *)page_private(page); | |
1368 | int i; | |
1369 | ||
1370 | if (unlikely(bio->bi_status)) | |
1371 | mapping_set_error(cic->inode->i_mapping, -EIO); | |
1372 | ||
5e6bbde9 | 1373 | f2fs_compress_free_page(page); |
4c8ff709 CY |
1374 | |
1375 | dec_page_count(sbi, F2FS_WB_DATA); | |
1376 | ||
e6c3948d | 1377 | if (atomic_dec_return(&cic->pending_pages)) |
4c8ff709 CY |
1378 | return; |
1379 | ||
1380 | for (i = 0; i < cic->nr_rpages; i++) { | |
1381 | WARN_ON(!cic->rpages[i]); | |
1382 | clear_cold_data(cic->rpages[i]); | |
1383 | end_page_writeback(cic->rpages[i]); | |
1384 | } | |
1385 | ||
31083031 | 1386 | page_array_free(cic->inode, cic->rpages, cic->nr_rpages); |
c68d6c88 | 1387 | kmem_cache_free(cic_entry_slab, cic); |
4c8ff709 CY |
1388 | } |
1389 | ||
1390 | static int f2fs_write_raw_pages(struct compress_ctx *cc, | |
1391 | int *submitted, | |
1392 | struct writeback_control *wbc, | |
1393 | enum iostat_type io_type) | |
1394 | { | |
1395 | struct address_space *mapping = cc->inode->i_mapping; | |
1396 | int _submitted, compr_blocks, ret; | |
1397 | int i = -1, err = 0; | |
1398 | ||
1399 | compr_blocks = f2fs_compressed_blocks(cc); | |
1400 | if (compr_blocks < 0) { | |
1401 | err = compr_blocks; | |
1402 | goto out_err; | |
1403 | } | |
1404 | ||
1405 | for (i = 0; i < cc->cluster_size; i++) { | |
1406 | if (!cc->rpages[i]) | |
1407 | continue; | |
1408 | retry_write: | |
1409 | if (cc->rpages[i]->mapping != mapping) { | |
1410 | unlock_page(cc->rpages[i]); | |
1411 | continue; | |
1412 | } | |
1413 | ||
1414 | BUG_ON(!PageLocked(cc->rpages[i])); | |
1415 | ||
1416 | ret = f2fs_write_single_data_page(cc->rpages[i], &_submitted, | |
1417 | NULL, NULL, wbc, io_type, | |
1418 | compr_blocks); | |
1419 | if (ret) { | |
1420 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
1421 | unlock_page(cc->rpages[i]); | |
1422 | ret = 0; | |
1423 | } else if (ret == -EAGAIN) { | |
466357dc CY |
1424 | /* |
1425 | * for quota file, just redirty left pages to | |
1426 | * avoid deadlock caused by cluster update race | |
1427 | * from foreground operation. | |
1428 | */ | |
1429 | if (IS_NOQUOTA(cc->inode)) { | |
1430 | err = 0; | |
1431 | goto out_err; | |
1432 | } | |
4c8ff709 CY |
1433 | ret = 0; |
1434 | cond_resched(); | |
5df7731f CY |
1435 | congestion_wait(BLK_RW_ASYNC, |
1436 | DEFAULT_IO_TIMEOUT); | |
4c8ff709 | 1437 | lock_page(cc->rpages[i]); |
eb1353cf CY |
1438 | |
1439 | if (!PageDirty(cc->rpages[i])) { | |
1440 | unlock_page(cc->rpages[i]); | |
1441 | continue; | |
1442 | } | |
1443 | ||
4c8ff709 CY |
1444 | clear_page_dirty_for_io(cc->rpages[i]); |
1445 | goto retry_write; | |
1446 | } | |
1447 | err = ret; | |
466357dc | 1448 | goto out_err; |
4c8ff709 CY |
1449 | } |
1450 | ||
1451 | *submitted += _submitted; | |
1452 | } | |
1453 | return 0; | |
4c8ff709 CY |
1454 | out_err: |
1455 | for (++i; i < cc->cluster_size; i++) { | |
1456 | if (!cc->rpages[i]) | |
1457 | continue; | |
1458 | redirty_page_for_writepage(wbc, cc->rpages[i]); | |
1459 | unlock_page(cc->rpages[i]); | |
1460 | } | |
1461 | return err; | |
1462 | } | |
1463 | ||
1464 | int f2fs_write_multi_pages(struct compress_ctx *cc, | |
1465 | int *submitted, | |
1466 | struct writeback_control *wbc, | |
1467 | enum iostat_type io_type) | |
1468 | { | |
4c8ff709 CY |
1469 | int err; |
1470 | ||
1471 | *submitted = 0; | |
1472 | if (cluster_may_compress(cc)) { | |
1473 | err = f2fs_compress_pages(cc); | |
1474 | if (err == -EAGAIN) { | |
1475 | goto write; | |
1476 | } else if (err) { | |
1477 | f2fs_put_rpages_wbc(cc, wbc, true, 1); | |
1478 | goto destroy_out; | |
1479 | } | |
1480 | ||
1481 | err = f2fs_write_compressed_pages(cc, submitted, | |
1482 | wbc, io_type); | |
4c8ff709 CY |
1483 | if (!err) |
1484 | return 0; | |
1485 | f2fs_bug_on(F2FS_I_SB(cc->inode), err != -EAGAIN); | |
1486 | } | |
1487 | write: | |
1488 | f2fs_bug_on(F2FS_I_SB(cc->inode), *submitted); | |
1489 | ||
1490 | err = f2fs_write_raw_pages(cc, submitted, wbc, io_type); | |
1491 | f2fs_put_rpages_wbc(cc, wbc, false, 0); | |
1492 | destroy_out: | |
1493 | f2fs_destroy_compress_ctx(cc); | |
1494 | return err; | |
1495 | } | |
1496 | ||
1497 | struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc) | |
1498 | { | |
4c8ff709 CY |
1499 | struct decompress_io_ctx *dic; |
1500 | pgoff_t start_idx = start_idx_of_cluster(cc); | |
1501 | int i; | |
1502 | ||
c68d6c88 | 1503 | dic = kmem_cache_zalloc(dic_entry_slab, GFP_NOFS); |
4c8ff709 CY |
1504 | if (!dic) |
1505 | return ERR_PTR(-ENOMEM); | |
1506 | ||
31083031 | 1507 | dic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff709 | 1508 | if (!dic->rpages) { |
c68d6c88 | 1509 | kmem_cache_free(dic_entry_slab, dic); |
4c8ff709 CY |
1510 | return ERR_PTR(-ENOMEM); |
1511 | } | |
1512 | ||
1513 | dic->magic = F2FS_COMPRESSED_PAGE_MAGIC; | |
1514 | dic->inode = cc->inode; | |
e6c3948d | 1515 | atomic_set(&dic->pending_pages, cc->nr_cpages); |
4c8ff709 CY |
1516 | dic->cluster_idx = cc->cluster_idx; |
1517 | dic->cluster_size = cc->cluster_size; | |
1518 | dic->log_cluster_size = cc->log_cluster_size; | |
1519 | dic->nr_cpages = cc->nr_cpages; | |
1520 | dic->failed = false; | |
1521 | ||
1522 | for (i = 0; i < dic->cluster_size; i++) | |
1523 | dic->rpages[i] = cc->rpages[i]; | |
1524 | dic->nr_rpages = cc->cluster_size; | |
1525 | ||
31083031 | 1526 | dic->cpages = page_array_alloc(dic->inode, dic->nr_cpages); |
4c8ff709 CY |
1527 | if (!dic->cpages) |
1528 | goto out_free; | |
1529 | ||
1530 | for (i = 0; i < dic->nr_cpages; i++) { | |
1531 | struct page *page; | |
1532 | ||
5e6bbde9 | 1533 | page = f2fs_compress_alloc_page(); |
4c8ff709 CY |
1534 | if (!page) |
1535 | goto out_free; | |
1536 | ||
1537 | f2fs_set_compressed_page(page, cc->inode, | |
887347a0 | 1538 | start_idx + i + 1, dic); |
4c8ff709 CY |
1539 | dic->cpages[i] = page; |
1540 | } | |
1541 | ||
4c8ff709 CY |
1542 | return dic; |
1543 | ||
1544 | out_free: | |
1545 | f2fs_free_dic(dic); | |
1546 | return ERR_PTR(-ENOMEM); | |
1547 | } | |
1548 | ||
1549 | void f2fs_free_dic(struct decompress_io_ctx *dic) | |
1550 | { | |
1551 | int i; | |
1552 | ||
1553 | if (dic->tpages) { | |
1554 | for (i = 0; i < dic->cluster_size; i++) { | |
1555 | if (dic->rpages[i]) | |
1556 | continue; | |
8908e753 CY |
1557 | if (!dic->tpages[i]) |
1558 | continue; | |
5e6bbde9 | 1559 | f2fs_compress_free_page(dic->tpages[i]); |
4c8ff709 | 1560 | } |
31083031 | 1561 | page_array_free(dic->inode, dic->tpages, dic->cluster_size); |
4c8ff709 CY |
1562 | } |
1563 | ||
1564 | if (dic->cpages) { | |
1565 | for (i = 0; i < dic->nr_cpages; i++) { | |
1566 | if (!dic->cpages[i]) | |
1567 | continue; | |
5e6bbde9 | 1568 | f2fs_compress_free_page(dic->cpages[i]); |
4c8ff709 | 1569 | } |
31083031 | 1570 | page_array_free(dic->inode, dic->cpages, dic->nr_cpages); |
4c8ff709 CY |
1571 | } |
1572 | ||
31083031 | 1573 | page_array_free(dic->inode, dic->rpages, dic->nr_rpages); |
c68d6c88 | 1574 | kmem_cache_free(dic_entry_slab, dic); |
4c8ff709 CY |
1575 | } |
1576 | ||
1577 | void f2fs_decompress_end_io(struct page **rpages, | |
1578 | unsigned int cluster_size, bool err, bool verity) | |
1579 | { | |
1580 | int i; | |
1581 | ||
1582 | for (i = 0; i < cluster_size; i++) { | |
1583 | struct page *rpage = rpages[i]; | |
1584 | ||
1585 | if (!rpage) | |
1586 | continue; | |
1587 | ||
23c51bed CY |
1588 | if (err || PageError(rpage)) |
1589 | goto clear_uptodate; | |
1590 | ||
1591 | if (!verity || fsverity_verify_page(rpage)) { | |
1592 | SetPageUptodate(rpage); | |
1593 | goto unlock; | |
4c8ff709 | 1594 | } |
23c51bed CY |
1595 | clear_uptodate: |
1596 | ClearPageUptodate(rpage); | |
1597 | ClearPageError(rpage); | |
1598 | unlock: | |
4c8ff709 CY |
1599 | unlock_page(rpage); |
1600 | } | |
1601 | } | |
31083031 CY |
1602 | |
1603 | int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) | |
1604 | { | |
1605 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
1606 | char slab_name[32]; | |
1607 | ||
1608 | sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), MINOR(dev)); | |
1609 | ||
1610 | sbi->page_array_slab_size = sizeof(struct page *) << | |
1611 | F2FS_OPTION(sbi).compress_log_size; | |
1612 | ||
1613 | sbi->page_array_slab = f2fs_kmem_cache_create(slab_name, | |
1614 | sbi->page_array_slab_size); | |
1615 | if (!sbi->page_array_slab) | |
1616 | return -ENOMEM; | |
1617 | return 0; | |
1618 | } | |
1619 | ||
1620 | void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) | |
1621 | { | |
1622 | kmem_cache_destroy(sbi->page_array_slab); | |
1623 | } | |
c68d6c88 CY |
1624 | |
1625 | static int __init f2fs_init_cic_cache(void) | |
1626 | { | |
1627 | cic_entry_slab = f2fs_kmem_cache_create("f2fs_cic_entry", | |
1628 | sizeof(struct compress_io_ctx)); | |
1629 | if (!cic_entry_slab) | |
1630 | return -ENOMEM; | |
1631 | return 0; | |
1632 | } | |
1633 | ||
1634 | static void f2fs_destroy_cic_cache(void) | |
1635 | { | |
1636 | kmem_cache_destroy(cic_entry_slab); | |
1637 | } | |
1638 | ||
1639 | static int __init f2fs_init_dic_cache(void) | |
1640 | { | |
1641 | dic_entry_slab = f2fs_kmem_cache_create("f2fs_dic_entry", | |
1642 | sizeof(struct decompress_io_ctx)); | |
1643 | if (!dic_entry_slab) | |
1644 | return -ENOMEM; | |
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | static void f2fs_destroy_dic_cache(void) | |
1649 | { | |
1650 | kmem_cache_destroy(dic_entry_slab); | |
1651 | } | |
1652 | ||
1653 | int __init f2fs_init_compress_cache(void) | |
1654 | { | |
1655 | int err; | |
1656 | ||
1657 | err = f2fs_init_cic_cache(); | |
1658 | if (err) | |
1659 | goto out; | |
1660 | err = f2fs_init_dic_cache(); | |
1661 | if (err) | |
1662 | goto free_cic; | |
1663 | return 0; | |
1664 | free_cic: | |
1665 | f2fs_destroy_cic_cache(); | |
1666 | out: | |
1667 | return -ENOMEM; | |
1668 | } | |
1669 | ||
1670 | void f2fs_destroy_compress_cache(void) | |
1671 | { | |
1672 | f2fs_destroy_dic_cache(); | |
1673 | f2fs_destroy_cic_cache(); | |
1674 | } |