1BLK_ADD_TRACE_BIO_RE(9) Block Devices BLK_ADD_TRACE_BIO_RE(9)
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6 blk_add_trace_bio_remap - Add a trace for a bio-remap operation
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9 void blk_add_trace_bio_remap(void * ignore, struct request_queue * q,
10 struct bio * bio, dev_t dev,
11 sector_t from);
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14 ignore
15 trace callback data parameter (not used)
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17 q
18 queue the io is for
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20 bio
21 the source bio
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23 dev
24 target device
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26 from
27 source sector
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30 Device mapper or raid target sometimes need to split a bio because it
31 spans a stripe (or similar). Add a trace for that action.
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34Kernel Hackers Manual 3.10 June 2019 BLK_ADD_TRACE_BIO_RE(9)