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vfs: spread struct mount - do_add_mount and graft_tree

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-11-25 00:30:56 -05:00
parent 6776db3d32
commit 95bc5f25c1
1 changed files with 11 additions and 11 deletions
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22
fs/namespace.c
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@ -1666,19 +1666,19 @@ static void unlock_mount(struct path *path)
mutex_unlock(&path->dentry->d_inode->i_mutex); mutex_unlock(&path->dentry->d_inode->i_mutex);
} }
static int graft_tree(struct vfsmount *mnt, struct path *path) static int graft_tree(struct mount *mnt, struct path *path)
{ {
if (mnt->mnt_sb->s_flags & MS_NOUSER) if (mnt->mnt.mnt_sb->s_flags & MS_NOUSER)
return -EINVAL; return -EINVAL;
if (S_ISDIR(path->dentry->d_inode->i_mode) != if (S_ISDIR(path->dentry->d_inode->i_mode) !=
S_ISDIR(mnt->mnt_root->d_inode->i_mode)) S_ISDIR(mnt->mnt.mnt_root->d_inode->i_mode))
return -ENOTDIR; return -ENOTDIR;
if (d_unlinked(path->dentry)) if (d_unlinked(path->dentry))
return -ENOENT; return -ENOENT;
return attach_recursive_mnt(real_mount(mnt), path, NULL); return attach_recursive_mnt(mnt, path, NULL);
} }
/* /*
@ -1776,7 +1776,7 @@ static int do_loopback(struct path *path, char *old_name,
if (!mnt) if (!mnt)
goto out2; goto out2;
err = graft_tree(&mnt->mnt, path); err = graft_tree(mnt, path);
if (err) { if (err) {
br_write_lock(vfsmount_lock); br_write_lock(vfsmount_lock);
umount_tree(mnt, 0, &umount_list); umount_tree(mnt, 0, &umount_list);
@ -1972,7 +1972,7 @@ do_kern_mount(const char *fstype, int flags, const char *name, void *data)
/* /*
* add a mount into a namespace's mount tree * add a mount into a namespace's mount tree
*/ */
static int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flags) static int do_add_mount(struct mount *newmnt, struct path *path, int mnt_flags)
{ {
int err; int err;
@ -1988,15 +1988,15 @@ static int do_add_mount(struct vfsmount *newmnt, struct path *path, int mnt_flag
/* Refuse the same filesystem on the same mount point */ /* Refuse the same filesystem on the same mount point */
err = -EBUSY; err = -EBUSY;
if (path->mnt->mnt_sb == newmnt->mnt_sb && if (path->mnt->mnt_sb == newmnt->mnt.mnt_sb &&
path->mnt->mnt_root == path->dentry) path->mnt->mnt_root == path->dentry)
goto unlock; goto unlock;
err = -EINVAL; err = -EINVAL;
if (S_ISLNK(newmnt->mnt_root->d_inode->i_mode)) if (S_ISLNK(newmnt->mnt.mnt_root->d_inode->i_mode))
goto unlock; goto unlock;
newmnt->mnt_flags = mnt_flags; newmnt->mnt.mnt_flags = mnt_flags;
err = graft_tree(newmnt, path); err = graft_tree(newmnt, path);
unlock: unlock:
@ -2025,7 +2025,7 @@ static int do_new_mount(struct path *path, char *type, int flags,
if (IS_ERR(mnt)) if (IS_ERR(mnt))
return PTR_ERR(mnt); return PTR_ERR(mnt);
err = do_add_mount(mnt, path, mnt_flags); err = do_add_mount(real_mount(mnt), path, mnt_flags);
if (err) if (err)
mntput(mnt); mntput(mnt);
return err; return err;
@ -2046,7 +2046,7 @@ int finish_automount(struct vfsmount *m, struct path *path)
goto fail; goto fail;
} }
err = do_add_mount(m, path, path->mnt->mnt_flags | MNT_SHRINKABLE); err = do_add_mount(mnt, path, path->mnt->mnt_flags | MNT_SHRINKABLE);
if (!err) if (!err)
return 0; return 0;
fail: fail: