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nfsd: Ensure sampling of the write verifier is atomic with the write

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When doing an unstable write, we need to ensure that we sample the
write verifier before releasing the lock, and allowing a commit to
the same file to proceed.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust
2020-01-06 13:40:37 -05:00
committed by J. Bruce Fields
parent 524ff1af22
commit 19e0663ff9
7 changed files with 19 additions and 15 deletions
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2
fs/nfsd/nfsproc.c
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@@ -226,7 +226,7 @@ nfsd_proc_write(struct svc_rqst *rqstp)
return nfserr_io;
nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh),
argp->offset, rqstp->rq_vec, nvecs,
&cnt, NFS_DATA_SYNC);
&cnt, NFS_DATA_SYNC, NULL);
return nfsd_return_attrs(nfserr, resp);
}