diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-04-16 22:22:46 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-05-14 21:09:22 +0200 |
| commit | a4d7f16806e98cee752006d3a8c10067a7c2aa6b (patch) | |
| tree | b7acd9998abaa6f25edc2f40fd5ce0cd996a3934 /fs | |
| parent | NFSv4: Eliminate nfs4_path_walk() (diff) | |
| download | linux-a4d7f16806e98cee752006d3a8c10067a7c2aa6b.tar.xz linux-a4d7f16806e98cee752006d3a8c10067a7c2aa6b.zip | |
NFS: Reduce the stack footprint of nfs_follow_mountpoint()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/namespace.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 7888cf36022d..db6aa3673cf3 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -105,8 +105,8 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) struct vfsmount *mnt; struct nfs_server *server = NFS_SERVER(dentry->d_inode); struct dentry *parent; - struct nfs_fh fh; - struct nfs_fattr fattr; + struct nfs_fh *fh = NULL; + struct nfs_fattr *fattr = NULL; int err; dprintk("--> nfs_follow_mountpoint()\n"); @@ -115,6 +115,12 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) if (IS_ROOT(dentry)) goto out_err; + err = -ENOMEM; + fh = nfs_alloc_fhandle(); + fattr = nfs_alloc_fattr(); + if (fh == NULL || fattr == NULL) + goto out_err; + dprintk("%s: enter\n", __func__); dput(nd->path.dentry); nd->path.dentry = dget(dentry); @@ -123,16 +129,16 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) parent = dget_parent(nd->path.dentry); err = server->nfs_client->rpc_ops->lookup(parent->d_inode, &nd->path.dentry->d_name, - &fh, &fattr); + fh, fattr); dput(parent); if (err != 0) goto out_err; - if (fattr.valid & NFS_ATTR_FATTR_V4_REFERRAL) + if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) mnt = nfs_do_refmount(nd->path.mnt, nd->path.dentry); else - mnt = nfs_do_submount(nd->path.mnt, nd->path.dentry, &fh, - &fattr); + mnt = nfs_do_submount(nd->path.mnt, nd->path.dentry, fh, + fattr); err = PTR_ERR(mnt); if (IS_ERR(mnt)) goto out_err; @@ -151,6 +157,8 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) nd->path.dentry = dget(mnt->mnt_root); schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout); out: + nfs_free_fattr(fattr); + nfs_free_fhandle(fh); dprintk("%s: done, returned %d\n", __func__, err); dprintk("<-- nfs_follow_mountpoint() = %d\n", err); |