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NFSD: Optimize nfsd4_encode_operation()

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write_bytes_to_xdr_buf() is a generic way to place a variable-length
data item in an already-reserved spot in the encoding buffer.
However, it is costly, and here, it is unnecessary because the
data item is fixed in size, the buffer destination address is
always word-aligned, and the destination location is already in
@p.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2022-07-22 16:08:38 -04:00
parent 3a5940bfa1
commit 095a764b7a
1 changed files with 1 additions and 2 deletions
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3
fs/nfsd/nfs4xdr.c
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@ -5373,8 +5373,7 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
so->so_replay.rp_buf, len);
}
status:
/* Note that op->status is already in network byte order: */
write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4);
*p = op->status;
}
/*