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NFSv4.1: Use the more efficient open_noattr call for open-by-filehandle 

When we're doing open-by-filehandle in NFSv4.1, we shouldn't need to
do the cache consistency revalidation on the directory. It is
therefore more efficient to just use open_noattr, which returns the
file attributes, but not the directory attributes.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2013-04-23 14:31:19 -04:00
parent fd068b200f
commit 8188df1733
1 changed files with 6 additions and 2 deletions
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8
fs/nfs/nfs4proc.c
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@ -1549,9 +1549,13 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
} }
/* Update client id. */ /* Update client id. */
data->o_arg.clientid = clp->cl_clientid; data->o_arg.clientid = clp->cl_clientid;
if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { switch (data->o_arg.claim) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; case NFS4_OPEN_CLAIM_PREVIOUS:
case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
case NFS4_OPEN_CLAIM_FH:
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
} }
data->timestamp = jiffies; data->timestamp = jiffies;