dm-flakey.c (0898782247ae533d1f4e47a06bc5d4870931b284) dm-flakey.c (2e2d6f7e44a2b9f96ca8af445ae0150a6cefde41)
1/*
2 * Copyright (C) 2003 Sistina Software (UK) Limited.
3 * Copyright (C) 2004, 2010-2011 Red Hat, Inc. All rights reserved.
4 *
5 * This file is released under the GPL.
6 */
7
8#include <linux/device-mapper.h>

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275 return fc->start + dm_target_offset(ti, bi_sector);
276}
277
278static void flakey_map_bio(struct dm_target *ti, struct bio *bio)
279{
280 struct flakey_c *fc = ti->private;
281
282 bio_set_dev(bio, fc->dev->bdev);
1/*
2 * Copyright (C) 2003 Sistina Software (UK) Limited.
3 * Copyright (C) 2004, 2010-2011 Red Hat, Inc. All rights reserved.
4 *
5 * This file is released under the GPL.
6 */
7
8#include <linux/device-mapper.h>

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275 return fc->start + dm_target_offset(ti, bi_sector);
276}
277
278static void flakey_map_bio(struct dm_target *ti, struct bio *bio)
279{
280 struct flakey_c *fc = ti->private;
281
282 bio_set_dev(bio, fc->dev->bdev);
283 if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET)
283 if (bio_sectors(bio) || op_is_zone_mgmt(bio_op(bio)))
284 bio->bi_iter.bi_sector =
285 flakey_map_sector(ti, bio->bi_iter.bi_sector);
286}
287
288static void corrupt_bio_data(struct bio *bio, struct flakey_c *fc)
289{
290 unsigned int corrupt_bio_byte = fc->corrupt_bio_byte - 1;
291

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317
318static int flakey_map(struct dm_target *ti, struct bio *bio)
319{
320 struct flakey_c *fc = ti->private;
321 unsigned elapsed;
322 struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
323 pb->bio_submitted = false;
324
284 bio->bi_iter.bi_sector =
285 flakey_map_sector(ti, bio->bi_iter.bi_sector);
286}
287
288static void corrupt_bio_data(struct bio *bio, struct flakey_c *fc)
289{
290 unsigned int corrupt_bio_byte = fc->corrupt_bio_byte - 1;
291

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317
318static int flakey_map(struct dm_target *ti, struct bio *bio)
319{
320 struct flakey_c *fc = ti->private;
321 unsigned elapsed;
322 struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
323 pb->bio_submitted = false;
324
325 /* Do not fail reset zone */
326 if (bio_op(bio) == REQ_OP_ZONE_RESET)
325 if (op_is_zone_mgmt(bio_op(bio)))
327 goto map_bio;
328
329 /* Are we alive ? */
330 elapsed = (jiffies - fc->start_time) / HZ;
331 if (elapsed % (fc->up_interval + fc->down_interval) >= fc->up_interval) {
332 /*
333 * Flag this bio as submitted while down.
334 */

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379}
380
381static int flakey_end_io(struct dm_target *ti, struct bio *bio,
382 blk_status_t *error)
383{
384 struct flakey_c *fc = ti->private;
385 struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
386
326 goto map_bio;
327
328 /* Are we alive ? */
329 elapsed = (jiffies - fc->start_time) / HZ;
330 if (elapsed % (fc->up_interval + fc->down_interval) >= fc->up_interval) {
331 /*
332 * Flag this bio as submitted while down.
333 */

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378}
379
380static int flakey_end_io(struct dm_target *ti, struct bio *bio,
381 blk_status_t *error)
382{
383 struct flakey_c *fc = ti->private;
384 struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
385
387 if (bio_op(bio) == REQ_OP_ZONE_RESET)
386 if (op_is_zone_mgmt(bio_op(bio)))
388 return DM_ENDIO_DONE;
389
390 if (!*error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
391 if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
392 all_corrupt_bio_flags_match(bio, fc)) {
393 /*
394 * Corrupt successful matching READs while in down state.
395 */

--- 131 unchanged lines hidden --- 		387 return DM_ENDIO_DONE;
388
389 if (!*error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
390 if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
391 all_corrupt_bio_flags_match(bio, fc)) {
392 /*
393 * Corrupt successful matching READs while in down state.
394 */

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