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Message-Id: <20191210123115.1655-11-smayhew@redhat.com>
Date: Tue, 10 Dec 2019 07:30:58 -0500
From: Scott Mayhew <smayhew@...hat.com>
To: anna.schumaker@...app.com, trond.myklebust@...merspace.com
Cc: dhowells@...hat.com, viro@...iv.linux.org.uk,
linux-nfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: [PATCH v6 10/27] nfs: merge xdev and remote file_system_type
From: Al Viro <viro@...iv.linux.org.uk>
they are identical now...
Reviewed-by: David Howells <dhowells@...hat.com>
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
fs/nfs/internal.h | 2 +-
fs/nfs/namespace.c | 2 +-
fs/nfs/nfs4super.c | 22 +---------------------
fs/nfs/super.c | 14 ++++++++------
4 files changed, 11 insertions(+), 29 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 4a0ba66bc3aa..e338558b7908 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -388,7 +388,7 @@ extern int nfs_wait_atomic_killable(atomic_t *p, unsigned int mode);
/* super.c */
extern const struct super_operations nfs_sops;
extern struct file_system_type nfs_fs_type;
-extern struct file_system_type nfs_xdev_fs_type;
+extern struct file_system_type nfs_prepared_fs_type;
#if IS_ENABLED(CONFIG_NFS_V4)
extern struct file_system_type nfs4_referral_fs_type;
#endif
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index a00936dd153b..e5f4f2d760af 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -257,7 +257,7 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
if (IS_ERR(devname))
mnt = ERR_CAST(devname);
else
- mnt = vfs_submount(dentry, &nfs_xdev_fs_type, devname, &mount_info);
+ mnt = vfs_submount(dentry, &nfs_prepared_fs_type, devname, &mount_info);
if (mount_info.server)
nfs_free_server(mount_info.server);
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index 2b34d8e124cd..1358d8078737 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -18,19 +18,9 @@
static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc);
static void nfs4_evict_inode(struct inode *inode);
-static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
-static struct file_system_type nfs4_remote_fs_type = {
- .owner = THIS_MODULE,
- .name = "nfs4",
- .mount = nfs4_remote_mount,
- .kill_sb = nfs_kill_super,
- .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
-};
-
struct file_system_type nfs4_referral_fs_type = {
.owner = THIS_MODULE,
.name = "nfs4",
@@ -91,16 +81,6 @@ static void nfs4_evict_inode(struct inode *inode)
nfs_clear_inode(inode);
}
-/*
- * Get the superblock for the NFS4 root partition
- */
-static struct dentry *
-nfs4_remote_mount(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *info)
-{
- return nfs_fs_mount_common(flags, dev_name, info);
-}
-
struct nfs_referral_count {
struct list_head list;
const struct task_struct *task;
@@ -194,7 +174,7 @@ static struct dentry *do_nfs4_mount(struct nfs_server *server, int flags,
else
snprintf(root_devname, len, "%s:/", hostname);
info->server = server;
- root_mnt = vfs_kern_mount(&nfs4_remote_fs_type, flags, root_devname, info);
+ root_mnt = vfs_kern_mount(&nfs_prepared_fs_type, flags, root_devname, info);
if (info->server)
nfs_free_server(info->server);
info->server = NULL;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index cb0ead628842..60845dc864e7 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -293,7 +293,7 @@ static match_table_t nfs_vers_tokens = {
{ Opt_vers_err, NULL }
};
-static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type,
+static struct dentry *nfs_prepared_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
struct file_system_type nfs_fs_type = {
@@ -306,13 +306,14 @@ struct file_system_type nfs_fs_type = {
MODULE_ALIAS_FS("nfs");
EXPORT_SYMBOL_GPL(nfs_fs_type);
-struct file_system_type nfs_xdev_fs_type = {
+struct file_system_type nfs_prepared_fs_type = {
.owner = THIS_MODULE,
.name = "nfs",
- .mount = nfs_xdev_mount,
+ .mount = nfs_prepared_mount,
.kill_sb = nfs_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
};
+EXPORT_SYMBOL_GPL(nfs_prepared_fs_type);
const struct super_operations nfs_sops = {
.alloc_inode = nfs_alloc_inode,
@@ -2791,11 +2792,12 @@ void nfs_kill_super(struct super_block *s)
EXPORT_SYMBOL_GPL(nfs_kill_super);
/*
- * Clone an NFS2/3/4 server record on xdev traversal (FSID-change)
+ * Internal use only: mount_info is already set up by caller.
+ * Used for mountpoint crossings and for nfs4 root.
*/
static struct dentry *
-nfs_xdev_mount(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *raw_data)
+nfs_prepared_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *raw_data)
{
return nfs_fs_mount_common(flags, dev_name, raw_data);
}
--
2.17.2
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