change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/lightnvm/pblk-sysfs.c
..
..
@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0
1
2
 /*
2
3
  * Copyright (C) 2016 CNEX Labs
3
4
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
..
..
@@ -36,7 +37,7 @@
36
37
 			active = 0;
37
38
 			up(&rlun->wr_sem);
38
39
 		}
39
-		sz += snprintf(page + sz, PAGE_SIZE - sz,
40
+		sz += scnprintf(page + sz, PAGE_SIZE - sz,
40
41
 				"pblk: pos:%d, ch:%d, lun:%d - %d\n",
41
42
 					i,
42
43
 					rlun->bppa.a.ch,
..
..
@@ -119,7 +120,7 @@
119
120
 		struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf;
120
121
 		struct nvm_addrf_12 *gppaf = (struct nvm_addrf_12 *)&geo->addrf;
121
122
 
122
-		sz = snprintf(page, PAGE_SIZE,
123
+		sz = scnprintf(page, PAGE_SIZE,
123
124
 			"g:(b:%d)blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
124
125
 			pblk->addrf_len,
125
126
 			ppaf->blk_offset, ppaf->blk_len,
..
..
@@ -129,7 +130,7 @@
129
130
 			ppaf->pln_offset, ppaf->pln_len,
130
131
 			ppaf->sec_offset, ppaf->sec_len);
131
132
 
132
-		sz += snprintf(page + sz, PAGE_SIZE - sz,
133
+		sz += scnprintf(page + sz, PAGE_SIZE - sz,
133
134
 			"d:blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
134
135
 			gppaf->blk_offset, gppaf->blk_len,
135
136
 			gppaf->pg_offset, gppaf->pg_len,
..
..
@@ -141,7 +142,7 @@
141
142
 		struct nvm_addrf *ppaf = &pblk->addrf;
142
143
 		struct nvm_addrf *gppaf = &geo->addrf;
143
144
 
144
-		sz = snprintf(page, PAGE_SIZE,
145
+		sz = scnprintf(page, PAGE_SIZE,
145
146
 			"pblk:(s:%d)ch:%d/%d,lun:%d/%d,chk:%d/%d/sec:%d/%d\n",
146
147
 			pblk->addrf_len,
147
148
 			ppaf->ch_offset, ppaf->ch_len,
..
..
@@ -149,7 +150,7 @@
149
150
 			ppaf->chk_offset, ppaf->chk_len,
150
151
 			ppaf->sec_offset, ppaf->sec_len);
151
152
 
152
-		sz += snprintf(page + sz, PAGE_SIZE - sz,
153
+		sz += scnprintf(page + sz, PAGE_SIZE - sz,
153
154
 			"device:ch:%d/%d,lun:%d/%d,chk:%d/%d,sec:%d/%d\n",
154
155
 			gppaf->ch_offset, gppaf->ch_len,
155
156
 			gppaf->lun_offset, gppaf->lun_len,
..
..
@@ -277,11 +278,11 @@
277
278
 		pblk_err(pblk, "corrupted free line list:%d/%d\n",
278
279
 						nr_free_lines, free_line_cnt);
279
280
 
280
-	sz = snprintf(page, PAGE_SIZE - sz,
281
+	sz = scnprintf(page, PAGE_SIZE - sz,
281
282
 		"line: nluns:%d, nblks:%d, nsecs:%d\n",
282
283
 		geo->all_luns, lm->blk_per_line, lm->sec_per_line);
283
284
 
284
-	sz += snprintf(page + sz, PAGE_SIZE - sz,
285
+	sz += scnprintf(page + sz, PAGE_SIZE - sz,
285
286
 		"lines:d:%d,l:%d-f:%d,m:%d/%d,c:%d,b:%d,co:%d(d:%d,l:%d)t:%d\n",
286
287
 					cur_data, cur_log,
287
288
 					nr_free_lines,
..
..
@@ -291,12 +292,12 @@
291
292
 					d_line_cnt, l_line_cnt,
292
293
 					l_mg->nr_lines);
293
294
 
294
-	sz += snprintf(page + sz, PAGE_SIZE - sz,
295
+	sz += scnprintf(page + sz, PAGE_SIZE - sz,
295
296
 		"GC: full:%d, high:%d, mid:%d, low:%d, empty:%d, werr: %d, queue:%d\n",
296
297
 			gc_full, gc_high, gc_mid, gc_low, gc_empty, gc_werr,
297
298
 			atomic_read(&pblk->gc.read_inflight_gc));
298
299
 
299
-	sz += snprintf(page + sz, PAGE_SIZE - sz,
300
+	sz += scnprintf(page + sz, PAGE_SIZE - sz,
300
301
 		"data (%d) cur:%d, left:%d, vsc:%d, s:%d, map:%d/%d (%d)\n",
301
302
 			cur_data, cur_sec, msecs, vsc, sec_in_line,
302
303
 			map_weight, lm->sec_per_line,
..
..
@@ -312,19 +313,19 @@
312
313
 	struct pblk_line_meta *lm = &pblk->lm;
313
314
 	ssize_t sz = 0;
314
315
 
315
-	sz = snprintf(page, PAGE_SIZE - sz,
316
+	sz = scnprintf(page, PAGE_SIZE - sz,
316
317
 				"smeta - len:%d, secs:%d\n",
317
318
 					lm->smeta_len, lm->smeta_sec);
318
-	sz += snprintf(page + sz, PAGE_SIZE - sz,
319
+	sz += scnprintf(page + sz, PAGE_SIZE - sz,
319
320
 				"emeta - len:%d, sec:%d, bb_start:%d\n",
320
321
 					lm->emeta_len[0], lm->emeta_sec[0],
321
322
 					lm->emeta_bb);
322
-	sz += snprintf(page + sz, PAGE_SIZE - sz,
323
+	sz += scnprintf(page + sz, PAGE_SIZE - sz,
323
324
 				"bitmap lengths: sec:%d, blk:%d, lun:%d\n",
324
325
 					lm->sec_bitmap_len,
325
326
 					lm->blk_bitmap_len,
326
327
 					lm->lun_bitmap_len);
327
-	sz += snprintf(page + sz, PAGE_SIZE - sz,
328
+	sz += scnprintf(page + sz, PAGE_SIZE - sz,
328
329
 				"blk_line:%d, sec_line:%d, sec_blk:%d\n",
329
330
 					lm->blk_per_line,
330
331
 					lm->sec_per_line,
..
..
@@ -343,12 +344,12 @@
343
344
 {
344
345
 	int sz;
345
346
 
346
-	sz = snprintf(page, PAGE_SIZE,
347
+	sz = scnprintf(page, PAGE_SIZE,
347
348
 			"user:%lld gc:%lld pad:%lld WA:",
348
349
 			user, gc, pad);
349
350
 
350
351
 	if (!user) {
351
-		sz += snprintf(page + sz, PAGE_SIZE - sz, "NaN\n");
352
+		sz += scnprintf(page + sz, PAGE_SIZE - sz, "NaN\n");
352
353
 	} else {
353
354
 		u64 wa_int;
354
355
 		u32 wa_frac;
..
..
@@ -357,7 +358,7 @@
357
358
 		wa_int = div64_u64(wa_int, user);
358
359
 		wa_int = div_u64_rem(wa_int, 100000, &wa_frac);
359
360
 
360
-		sz += snprintf(page + sz, PAGE_SIZE - sz, "%llu.%05u\n",
361
+		sz += scnprintf(page + sz, PAGE_SIZE - sz, "%llu.%05u\n",
361
362
 							wa_int, wa_frac);
362
363
 	}
363
364
 
..
..
@@ -400,9 +401,9 @@
400
401
 	total = atomic64_read(&pblk->nr_flush) - pblk->nr_flush_rst;
401
402
 	if (!total) {
402
403
 		for (i = 0; i < (buckets + 1); i++)
403
-			sz += snprintf(page + sz, PAGE_SIZE - sz,
404
+			sz += scnprintf(page + sz, PAGE_SIZE - sz,
404
405
 				"%d:0 ", i);
405
-		sz += snprintf(page + sz, PAGE_SIZE - sz, "\n");
406
+		sz += scnprintf(page + sz, PAGE_SIZE - sz, "\n");
406
407
 
407
408
 		return sz;
408
409
 	}
..
..
@@ -410,7 +411,7 @@
410
411
 	for (i = 0; i < buckets; i++)
411
412
 		total_buckets += atomic64_read(&pblk->pad_dist[i]);
412
413
 
413
-	sz += snprintf(page + sz, PAGE_SIZE - sz, "0:%lld%% ",
414
+	sz += scnprintf(page + sz, PAGE_SIZE - sz, "0:%lld%% ",
414
415
 		bucket_percentage(total - total_buckets, total));
415
416
 
416
417
 	for (i = 0; i < buckets; i++) {
..
..
@@ -418,10 +419,10 @@
418
419
 
419
420
 		p = bucket_percentage(atomic64_read(&pblk->pad_dist[i]),
420
421
 					  total);
421
-		sz += snprintf(page + sz, PAGE_SIZE - sz, "%d:%lld%% ",
422
+		sz += scnprintf(page + sz, PAGE_SIZE - sz, "%d:%lld%% ",
422
423
 				i + 1, p);
423
424
 	}
424
-	sz += snprintf(page + sz, PAGE_SIZE - sz, "\n");
425
+	sz += scnprintf(page + sz, PAGE_SIZE - sz, "\n");
425
426
 
426
427
 	return sz;
427
428
 }
..
..
@@ -478,6 +479,13 @@
478
479
 	if (kstrtouint(page, 0, &sec_per_write))
479
480
 		return -EINVAL;
480
481
 
482
+	if (!pblk_is_oob_meta_supported(pblk)) {
483
+		/* For packed metadata case it is
484
+		 * not allowed to change sec_per_write.
485
+		 */
486
+		return -EINVAL;
487
+	}
488
+
481
489
 	if (sec_per_write < pblk->min_write_pgs
482
490
 				|| sec_per_write > pblk->max_write_pgs
483
491
 				|| sec_per_write % pblk->min_write_pgs != 0)