NFSv4: Simplify some cache consistency post-op GETATTRs
Certain asynchronous operations such as write() do not expect
(or care) that other metadata such as the file owner, mode, acls, ...
change. All they want to do is update and/or check the change attribute,
ctime, and mtime.
By skipping the file owner and group update, we also avoid having to do a
potential idmapper upcall for these asynchronous RPC calls.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index aa433d0..101f5f4 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1439,7 +1439,7 @@
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
calldata->arg.fmode = 0;
- calldata->arg.bitmask = server->attr_bitmask;
+ calldata->arg.bitmask = server->cache_consistency_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
@@ -1600,6 +1600,9 @@
server->caps |= NFS_CAP_HARDLINKS;
if (res.has_symlinks != 0)
server->caps |= NFS_CAP_SYMLINKS;
+ memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
+ server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
+ server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
server->acl_bitmask = res.acl_bitmask;
}
return status;
@@ -2079,7 +2082,7 @@
struct nfs_removeargs *args = msg->rpc_argp;
struct nfs_removeres *res = msg->rpc_resp;
- args->bitmask = server->attr_bitmask;
+ args->bitmask = server->cache_consistency_bitmask;
res->server = server;
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
}
@@ -2323,7 +2326,7 @@
.pages = &page,
.pgbase = 0,
.count = count,
- .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
+ .bitmask = NFS_SERVER(dentry->d_inode)->cache_consistency_bitmask,
};
struct nfs4_readdir_res res;
struct rpc_message msg = {
@@ -2552,7 +2555,7 @@
{
struct nfs_server *server = NFS_SERVER(data->inode);
- data->args.bitmask = server->attr_bitmask;
+ data->args.bitmask = server->cache_consistency_bitmask;
data->res.server = server;
data->timestamp = jiffies;
@@ -2575,7 +2578,7 @@
{
struct nfs_server *server = NFS_SERVER(data->inode);
- data->args.bitmask = server->attr_bitmask;
+ data->args.bitmask = server->cache_consistency_bitmask;
data->res.server = server;
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
}