8040 NFSv4 client: 3-way deadlock between nfs4_bio(), nfs4_do_delegreturn(), and nfs4_flush_pages()
Review Request #591 — Created June 19, 2017 and submitted — Latest diff uploaded
This fixes a 3-way deadlock in NFSv4 client.
I tested the fix using steps at https://www.illumos.org/issues/8040#note-2 and I confirmed the deadlock is no longer reproducible. This fix is in production for about 3 years now without any regression found.
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