Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Revert "NFSD: Force all NFSv4.2 COPY requests to be synchronous"
In the past several kernel releases, we've made NFSv4.2 async copy
reliable:
- The Linux NFS client and server now both implement and use the
NFSv4.2 OFFLOAD_STATUS operation
- The Linux NFS server keeps copy stateids around longer
- The Linux NFS client and server now both implement referring call
lists
And resilient against DoS:
- The Linux NFS server limits the number of concurrent async copy
operations
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
-7
-7
fs/nfsd/nfs4proc.c
-7
fs/nfsd/nfs4proc.c
···
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struct nfsd42_write_res *result;
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__be32 status;
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-
/*
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* Currently, async COPY is not reliable. Force all COPY
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* requests to be synchronous to avoid client application
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* hangs waiting for COPY completion.
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*/
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nfsd4_copy_set_sync(copy, true);
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-
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result = ©->cp_res;
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nfsd_copy_write_verifier((__be32 *)&result->wr_verifier.data, nn);
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