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authorTrond Myklebust <Trond.Myklebust@netapp.com>2010-04-16 16:22:48 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-05-14 15:09:23 -0400
commit4f727296d2428b60138793a0a1207a4085eacf99 (patch)
tree52c69d21dd90164fed413925ed194866d7a11136 /fs/nfs
parent8bac9db9cf85f2518cb523bb1d69c481975c1f9a (diff)
NFSv4: Reduce the stack footprint of nfs4_remote_referral_get_sb
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/super.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index fa3111eea29..dd589dee1ee 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2880,17 +2880,21 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
struct super_block *s;
struct nfs_server *server;
struct dentry *mntroot;
- struct nfs_fh mntfh;
+ struct nfs_fh *mntfh;
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
struct nfs_sb_mountdata sb_mntdata = {
.mntflags = flags,
};
- int error;
+ int error = -ENOMEM;
dprintk("--> nfs4_referral_get_sb()\n");
+ mntfh = nfs_alloc_fhandle();
+ if (mntfh == NULL)
+ goto out_err_nofh;
+
/* create a new volume representation */
- server = nfs4_create_referral_server(data, &mntfh);
+ server = nfs4_create_referral_server(data, mntfh);
if (IS_ERR(server)) {
error = PTR_ERR(server);
goto out_err_noserver;
@@ -2922,7 +2926,7 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
nfs_fscache_get_super_cookie(s, NULL, data);
}
- mntroot = nfs4_get_root(s, &mntfh);
+ mntroot = nfs4_get_root(s, mntfh);
if (IS_ERR(mntroot)) {
error = PTR_ERR(mntroot);
goto error_splat_super;
@@ -2939,12 +2943,15 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
security_sb_clone_mnt_opts(data->sb, s);
+ nfs_free_fhandle(mntfh);
dprintk("<-- nfs4_referral_get_sb() = 0\n");
return 0;
out_err_nosb:
nfs_free_server(server);
out_err_noserver:
+ nfs_free_fhandle(mntfh);
+out_err_nofh:
dprintk("<-- nfs4_referral_get_sb() = %d [error]\n", error);
return error;
@@ -2953,6 +2960,7 @@ error_splat_super:
bdi_unregister(&server->backing_dev_info);
error_splat_bdi:
deactivate_locked_super(s);
+ nfs_free_fhandle(mntfh);
dprintk("<-- nfs4_referral_get_sb() = %d [splat]\n", error);
return error;
}