NFS: Fix directory delegation verifier checks

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Doing this check in nfs_check_verifier() resulted in many, many more
lookups on the wire when running Christoph's delegation benchmarking
script. After some experimentation, I found that we can treat directory
delegations exactly the same as having a delegated verifier when we
reach nfs4_lookup_revalidate() for the best performance.

Reported-by: Christoph Hellwig <hch@lst.de>
Fixes: 156b094829 ("NFS: Request a directory delegation on ACCESS, CREATE, and UNLINK")
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

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Anna Schumaker 2025-12-19 15:13:44 -05:00 • committed by Trond Myklebust

parent 5a74af51c3

commit 6f9bda2337

1 changed files with 2 additions and 19 deletions

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fs/nfs/dir.c

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