NFS: Reduce stack footprint of nfs4_proc_create()
Move the O_EXCL open handling into _nfs4_do_open() where it belongs. Doing
so also allows us to reuse the struct fattr from the opendata.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index d0cb6e1..45f6470 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -70,6 +70,9 @@
static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
+ struct nfs_fattr *fattr, struct iattr *sattr,
+ struct nfs4_state *state);
/* Prevent leaks of NFSv4 errors into userland */
static int nfs4_map_errors(int err)
@@ -1659,15 +1662,24 @@
if (status != 0)
goto err_opendata_put;
- if (opendata->o_arg.open_flags & O_EXCL)
- nfs4_exclusive_attrset(opendata, sattr);
-
state = nfs4_opendata_to_nfs4_state(opendata);
status = PTR_ERR(state);
if (IS_ERR(state))
goto err_opendata_put;
if (server->caps & NFS_CAP_POSIX_LOCK)
set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
+
+ if (opendata->o_arg.open_flags & O_EXCL) {
+ nfs4_exclusive_attrset(opendata, sattr);
+
+ nfs_fattr_init(opendata->o_res.f_attr);
+ status = nfs4_do_setattr(state->inode, cred,
+ opendata->o_res.f_attr, sattr,
+ state);
+ if (status == 0)
+ nfs_setattr_update_inode(state->inode, sattr);
+ nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
+ }
nfs4_opendata_put(opendata);
nfs4_put_state_owner(sp);
*res = state;
@@ -2565,13 +2577,6 @@
}
d_add(dentry, igrab(state->inode));
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- if (flags & O_EXCL) {
- struct nfs_fattr fattr;
- status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state);
- if (status == 0)
- nfs_setattr_update_inode(state->inode, sattr);
- nfs_post_op_update_inode(state->inode, &fattr);
- }
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
status = nfs4_intent_set_file(nd, &path, state, fmode);
else