From: Scott Mayhew <smayhew@redhat.com>
To: anna.schumaker@netapp.com, trond.myklebust@hammerspace.com
Cc: dhowells@redhat.com, viro@zeniv.linux.org.uk,
linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: [PATCH v6 07/27] nfs: lift setting mount_info from nfs_xdev_mount()
Date: Tue, 10 Dec 2019 07:30:55 -0500 [thread overview]
Message-ID: <20191210123115.1655-8-smayhew@redhat.com> (raw)
In-Reply-To: <20191210123115.1655-1-smayhew@redhat.com>
From: Al Viro <viro@zeniv.linux.org.uk>
Do it in nfs_do_submount() instead. As a side benefit, nfs_clone_data
doesn't need ->fh and ->fattr anymore.
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/nfs/internal.h | 3 +--
fs/nfs/namespace.c | 35 +++++++++++++++++++++--------------
fs/nfs/super.c | 25 ++++---------------------
3 files changed, 26 insertions(+), 37 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 8f4900bd04f7..b193dd626c0a 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -34,8 +34,6 @@ static inline int nfs_attr_use_mounted_on_fileid(struct nfs_fattr *fattr)
struct nfs_clone_mount {
const struct super_block *sb;
const struct dentry *dentry;
- struct nfs_fh *fh;
- struct nfs_fattr *fattr;
char *hostname;
char *mnt_path;
struct sockaddr *addr;
@@ -405,6 +403,7 @@ struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
const char *, struct nfs_mount_info *);
void nfs_kill_super(struct super_block *);
void nfs_fill_super(struct super_block *, struct nfs_mount_info *);
+void nfs_clone_super(struct super_block *, struct nfs_mount_info *);
extern struct rpc_stat nfs_rpcstat;
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 5e0e9d29f5c5..a76aeb0c2923 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -19,6 +19,7 @@
#include <linux/vfs.h>
#include <linux/sunrpc/gss_api.h>
#include "internal.h"
+#include "nfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
@@ -213,16 +214,6 @@ void nfs_release_automount_timer(void)
cancel_delayed_work(&nfs_automount_task);
}
-/*
- * Clone a mountpoint of the appropriate type
- */
-static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
- const char *devname,
- struct nfs_clone_mount *mountdata)
-{
- return vfs_submount(mountdata->dentry, &nfs_xdev_fs_type, devname, mountdata);
-}
-
/**
* nfs_do_submount - set up mountpoint when crossing a filesystem boundary
* @dentry: parent directory
@@ -234,13 +225,20 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
struct nfs_fattr *fattr, rpc_authflavor_t authflavor)
{
+ struct super_block *sb = dentry->d_sb;
struct nfs_clone_mount mountdata = {
- .sb = dentry->d_sb,
+ .sb = sb,
.dentry = dentry,
- .fh = fh,
- .fattr = fattr,
.authflavor = authflavor,
};
+ struct nfs_mount_info mount_info = {
+ .fill_super = nfs_clone_super,
+ .set_security = nfs_clone_sb_security,
+ .cloned = &mountdata,
+ .mntfh = fh,
+ };
+ struct nfs_subversion *nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod;
+ struct nfs_server *server;
struct vfsmount *mnt;
char *page = (char *) __get_free_page(GFP_USER);
char *devname;
@@ -248,12 +246,21 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
if (page == NULL)
return ERR_PTR(-ENOMEM);
+ server = nfs_mod->rpc_ops->clone_server(NFS_SB(sb), fh,
+ fattr, authflavor);
+ if (IS_ERR(server))
+ return ERR_CAST(server);
+
+ mount_info.server = server;
+
devname = nfs_devname(dentry, page, PAGE_SIZE);
if (IS_ERR(devname))
mnt = ERR_CAST(devname);
else
- mnt = nfs_do_clone_mount(NFS_SB(dentry->d_sb), devname, &mountdata);
+ mnt = vfs_submount(dentry, &nfs_xdev_fs_type, devname, &mount_info);
+ if (mount_info.server)
+ nfs_free_server(mount_info.server);
free_page((unsigned long)page);
return mnt;
}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 379c7b26051d..97dc544eb220 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2395,7 +2395,7 @@ EXPORT_SYMBOL_GPL(nfs_fill_super);
/*
* Finish setting up a cloned NFS2/3/4 superblock
*/
-static void nfs_clone_super(struct super_block *sb,
+void nfs_clone_super(struct super_block *sb,
struct nfs_mount_info *mount_info)
{
const struct super_block *old_sb = mount_info->cloned->sb;
@@ -2796,27 +2796,10 @@ static struct dentry *
nfs_xdev_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
- struct nfs_clone_mount *data = raw_data;
- struct nfs_mount_info mount_info = {
- .fill_super = nfs_clone_super,
- .set_security = nfs_clone_sb_security,
- .cloned = data,
- };
- struct dentry *mntroot = ERR_PTR(-ENOMEM);
- struct nfs_subversion *nfs_mod = NFS_SB(data->sb)->nfs_client->cl_nfs_mod;
-
- dprintk("--> nfs_xdev_mount()\n");
+ struct nfs_mount_info *info = raw_data;
+ struct nfs_subversion *nfs_mod = NFS_SB(info->cloned->sb)->nfs_client->cl_nfs_mod;
- mount_info.mntfh = mount_info.cloned->fh;
-
- /* create a new volume representation */
- mount_info.server = nfs_mod->rpc_ops->clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
-
- mntroot = nfs_fs_mount_common(flags, dev_name, &mount_info, nfs_mod);
-
- dprintk("<-- nfs_xdev_mount() = %ld\n",
- IS_ERR(mntroot) ? PTR_ERR(mntroot) : 0L);
- return mntroot;
+ return nfs_fs_mount_common(flags, dev_name, info, nfs_mod);
}
#if IS_ENABLED(CONFIG_NFS_V4)
--
2.17.2
next prev parent reply other threads:[~2019-12-10 12:33 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 12:30 [PATCH v6 00/27] nfs: Mount API conversion Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 01/27] saner calling conventions for nfs_fs_mount_common() Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 02/27] nfs: stash server into struct nfs_mount_info Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 03/27] nfs: lift setting mount_info from nfs4_remote{,_referral}_mount Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 04/27] nfs: fold nfs4_remote_fs_type and nfs4_remote_referral_fs_type Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 05/27] nfs: don't bother setting/restoring export_path around do_nfs_root_mount() Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 06/27] nfs4: fold nfs_do_root_mount/nfs_follow_remote_path Scott Mayhew
2019-12-10 12:30 ` Scott Mayhew [this message]
2019-12-10 12:30 ` [PATCH v6 08/27] nfs: stash nfs_subversion reference into nfs_mount_info Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 09/27] nfs: don't bother passing nfs_subversion to ->try_mount() and nfs_fs_mount_common() Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 10/27] nfs: merge xdev and remote file_system_type Scott Mayhew
2019-12-10 12:30 ` [PATCH v6 11/27] nfs: unexport nfs_fs_mount_common() Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 12/27] nfs: don't pass nfs_subversion to ->create_server() Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 13/27] nfs: get rid of mount_info ->fill_super() Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 14/27] nfs_clone_sb_security(): simplify the check for server bogosity Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 15/27] nfs: get rid of ->set_security() Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 16/27] NFS: Move mount parameterisation bits into their own file Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 17/27] NFS: Constify mount argument match tables Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 18/27] NFS: Rename struct nfs_parsed_mount_data to struct nfs_fs_context Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 19/27] NFS: Split nfs_parse_mount_options() Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 20/27] NFS: Deindent nfs_fs_context_parse_option() Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 21/27] NFS: Add a small buffer in nfs_fs_context to avoid string dup Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 22/27] NFS: Do some tidying of the parsing code Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 23/27] NFS: rename nfs_fs_context pointer arg in a few functions Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 24/27] NFS: Convert mount option parsing to use functionality from fs_parser.h Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 25/27] NFS: Add fs_context support Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 26/27] NFS: Additional refactoring for fs_context conversion Scott Mayhew
2019-12-10 12:31 ` [PATCH v6 27/27] NFS: Attach supplementary error information to fs_context Scott Mayhew
2019-12-10 21:16 ` [PATCH v6 00/27] nfs: Mount API conversion Schumaker, Anna
2019-12-11 13:21 ` Scott Mayhew
2019-12-13 21:39 ` Scott Mayhew
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