block: Add should_fail_bio() for bpf error injection

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The classic error injection mechanism, should_fail_request() does not
support use cases where more information is required (from the entire
struct bio, for example).

To that end, this patch introduces should_fail_bio(), which calls
should_fail_request() under the hood but provides a convenient
place for kprobes to hook into if they require the entire struct bio.
This patch also replaces some existing calls to should_fail_request()
with should_fail_bio() with no degradation in performance.

Signed-off-by: Howard McLauchlan <hmclauchlan@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Howard McLauchlan 2018-02-06 14:05:39 -08:00 • committed by Jens Axboe

parent 5235553d82

commit 30abb3a67f

1 changed files with 10 additions and 1 deletions

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block/blk-core.c

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