Thanks all for the very prompt responses. On 2022-Jan-28 22:32:02 -0700, Warner Losh <i...@bsdimp.com> wrote: >I think that ufs relies on two ordering primitives, both marked with >BIO_ORDERED today. >That's what most of the drivers key off of. We always set BIO_ORDERED on >all the BIO_FLUSH >events as far as I Can tell.
Thanks for that warning. I don't think geom_gate understands either B_BARRIER or BIO_ORDERED. I shall have a closer look. >to it. b*barrierwrite() sets this, and that's used in the ffs_alloc code. In my case, I'm interested in ZFS, rather than UFS and it doesn't seem to set B_BARRIER or BIO_ORDERED or indirectly. -- Peter Jeremy
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