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PWX-21175: handle kernel crash in fastpath #229

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merged 10 commits into from
Sep 14, 2021
Merged

PWX-21175: handle kernel crash in fastpath #229

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c193b79
compile fix - disable fastpath code during compile time
Aug 31, 2021
edb4834
PWX-21175: handle kernel crash in fastpath
Sep 5, 2021
5cb4c1c
cleanup
Sep 5, 2021
df3bb97
fix compilation in 3.10
Sep 6, 2021
4e547c7
Merge branch 'ln/master' into ln/PWX-21175
Sep 6, 2021
cfbc347
initialize bio size for discards
Sep 6, 2021
ab29747
avoid freezing for deadlock
Sep 7, 2021
869d9bf
use global workqueue
Sep 12, 2021
2b7acba
fix compilation
Sep 13, 2021
a5940ac
Merge branch 'master' into ln/PWX-21175
Sep 14, 2021
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initialize bio size for discards 
Signed-off-by: Lakshmi Narasimhan Sundararajan <lns@portworx.com>
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Lakshmi Narasimhan Sundararajan committed Sep 6, 2021
commit cfbc34754282ae8fb0cb3ef8832ec3a304a5f630
14 changes: 9 additions & 5 deletions pxd_bio_blkmq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -279,12 +279,16 @@ static int prep_root_bio(struct fp_root_context *fproot) {
BIO_SET_OP_ATTRS(bio, BIO_OP(rq->bio), op_flags);
bio->bi_private = fproot;

if (!specialops && (blk_rq_bytes(rq) != 0)) {
rq_for_each_segment(bv, rq, rq_iter) {
unsigned len =
bio_add_page(bio, BVEC(bv).bv_page, BVEC(bv).bv_len,
if (specialops) {
BIO_SIZE(bio) = blk_rq_bytes(rq);
} else {
if (blk_rq_bytes(rq) != 0) {
rq_for_each_segment(bv, rq, rq_iter) {
unsigned len =
bio_add_page(bio, BVEC(bv).bv_page, BVEC(bv).bv_len,
BVEC(bv).bv_offset);
BUG_ON(len != BVEC(bv).bv_len);
BUG_ON(len != BVEC(bv).bv_len);
}
}
}

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