nfsd: Replace use of rwsem with errseq_t

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The nfsd_file nf_rwsem is currently being used to separate file write
and commit instances to ensure that we catch errors and apply them to
the correct write/commit.
We can improve scalability at the expense of a little accuracy (some
extra false positives) by replacing the nf_rwsem with more careful
use of the errseq_t mechanism to track errors across the different
operations.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
[ cel: rebased on zero-verifier fix ]

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Trond Myklebust 2021-12-18 20:38:01 -05:00 • committed by Chuck Lever

parent f11ad7aa65

commit 555dbf1a9a

4 changed files with 24 additions and 34 deletions

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1

fs/nfsd/filecache.c

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1

fs/nfsd/filecache.h

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16

fs/nfsd/nfs4proc.c

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40

fs/nfsd/vfs.c

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