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zvol: Fix blk-mq sync

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The zvol blk-mq codepaths would erroneously send FLUSH and TRIM
commands down the read codepath, rather than write.  This fixes
the issue, and updates the zvol_misc_fua test to verify that
sync writes are actually happening.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #17761
Closes #17765
This commit is contained in:
Tony Hutter
2025-09-29 16:29:20 -07:00
parent ea5d37a1b9
commit 6a02c09942
3 changed files with 61 additions and 20 deletions
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include/os/linux/kernel/linux/blkdev_compat.h
-18
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@@ -514,24 +514,6 @@ blk_generic_alloc_queue(make_request_fn make_request, int node_id)
}
#endif /* !HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS */
/*
* All the io_*() helper functions below can operate on a bio, or a rq, but
* not both. The older submit_bio() codepath will pass a bio, and the
* newer blk-mq codepath will pass a rq.
*/
static inline int
io_data_dir(struct bio *bio, struct request *rq)
{
if (rq != NULL) {
if (op_is_write(req_op(rq))) {
return (WRITE);
} else {
return (READ);
}
}
return (bio_data_dir(bio));
}
static inline int
io_is_flush(struct bio *bio, struct request *rq)
{