s = NULL;
goto out;
}
+#ifdef CONFIG_SMP
+ s->s_files = alloc_percpu(struct list_head);
+ if (!s->s_files) {
+ security_sb_free(s);
+ kfree(s);
+ s = NULL;
+ goto out;
+ } else {
+ int i;
+
+ for_each_possible_cpu(i)
+ INIT_LIST_HEAD(per_cpu_ptr(s->s_files, i));
+ }
+#else
INIT_LIST_HEAD(&s->s_files);
+#endif
INIT_LIST_HEAD(&s->s_instances);
INIT_HLIST_HEAD(&s->s_anon);
INIT_LIST_HEAD(&s->s_inodes);
*/
static inline void destroy_super(struct super_block *s)
{
+#ifdef CONFIG_SMP
+ free_percpu(s->s_files);
+#endif
security_sb_free(s);
kfree(s->s_subtype);
kfree(s->s_options);
get_fs_excl();
sb->s_flags &= ~MS_ACTIVE;
- /* bad name - it should be evict_inodes() */
- invalidate_inodes(sb);
+ fsnotify_unmount_inodes(&sb->s_inodes);
+
+ evict_inodes(sb);
if (sop->put_super)
sop->put_super(sb);
- /* Forget any remaining inodes */
- if (invalidate_inodes(sb)) {
+ if (!list_empty(&sb->s_inodes)) {
printk("VFS: Busy inodes after unmount of %s. "
"Self-destruct in 5 seconds. Have a nice day...\n",
sb->s_id);
return set_anon_super(sb, NULL);
}
-int get_sb_ns(struct file_system_type *fs_type, int flags, void *data,
- int (*fill_super)(struct super_block *, void *, int),
- struct vfsmount *mnt)
+struct dentry *mount_ns(struct file_system_type *fs_type, int flags,
+ void *data, int (*fill_super)(struct super_block *, void *, int))
{
struct super_block *sb;
sb = sget(fs_type, ns_test_super, ns_set_super, data);
if (IS_ERR(sb))
- return PTR_ERR(sb);
+ return ERR_CAST(sb);
if (!sb->s_root) {
int err;
err = fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
if (err) {
deactivate_locked_super(sb);
- return err;
+ return ERR_PTR(err);
}
sb->s_flags |= MS_ACTIVE;
}
- simple_set_mnt(mnt, sb);
- return 0;
+ return dget(sb->s_root);
}
-EXPORT_SYMBOL(get_sb_ns);
+EXPORT_SYMBOL(mount_ns);
#ifdef CONFIG_BLOCK
static int set_bdev_super(struct super_block *s, void *data)
return (void *)s->s_bdev == data;
}
-int get_sb_bdev(struct file_system_type *fs_type,
+struct dentry *mount_bdev(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data,
- int (*fill_super)(struct super_block *, void *, int),
- struct vfsmount *mnt)
+ int (*fill_super)(struct super_block *, void *, int))
{
struct block_device *bdev;
struct super_block *s;
bdev = open_bdev_exclusive(dev_name, mode, fs_type);
if (IS_ERR(bdev))
- return PTR_ERR(bdev);
+ return ERR_CAST(bdev);
/*
* once the super is inserted into the list by sget, s_umount
bdev->bd_super = s;
}
- simple_set_mnt(mnt, s);
- return 0;
+ return dget(s->s_root);
error_s:
error = PTR_ERR(s);
error_bdev:
close_bdev_exclusive(bdev, mode);
error:
- return error;
+ return ERR_PTR(error);
+}
+EXPORT_SYMBOL(mount_bdev);
+
+int get_sb_bdev(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data,
+ int (*fill_super)(struct super_block *, void *, int),
+ struct vfsmount *mnt)
+{
+ struct dentry *root;
+
+ root = mount_bdev(fs_type, flags, dev_name, data, fill_super);
+ if (IS_ERR(root))
+ return PTR_ERR(root);
+ mnt->mnt_root = root;
+ mnt->mnt_sb = root->d_sb;
+ return 0;
}
EXPORT_SYMBOL(get_sb_bdev);
EXPORT_SYMBOL(kill_block_super);
#endif
-int get_sb_nodev(struct file_system_type *fs_type,
+struct dentry *mount_nodev(struct file_system_type *fs_type,
int flags, void *data,
- int (*fill_super)(struct super_block *, void *, int),
- struct vfsmount *mnt)
+ int (*fill_super)(struct super_block *, void *, int))
{
int error;
struct super_block *s = sget(fs_type, NULL, set_anon_super, NULL);
if (IS_ERR(s))
- return PTR_ERR(s);
+ return ERR_CAST(s);
s->s_flags = flags;
error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
deactivate_locked_super(s);
- return error;
+ return ERR_PTR(error);
}
s->s_flags |= MS_ACTIVE;
- simple_set_mnt(mnt, s);
- return 0;
+ return dget(s->s_root);
}
+EXPORT_SYMBOL(mount_nodev);
+int get_sb_nodev(struct file_system_type *fs_type,
+ int flags, void *data,
+ int (*fill_super)(struct super_block *, void *, int),
+ struct vfsmount *mnt)
+{
+ struct dentry *root;
+
+ root = mount_nodev(fs_type, flags, data, fill_super);
+ if (IS_ERR(root))
+ return PTR_ERR(root);
+ mnt->mnt_root = root;
+ mnt->mnt_sb = root->d_sb;
+ return 0;
+}
EXPORT_SYMBOL(get_sb_nodev);
static int compare_single(struct super_block *s, void *p)
return 1;
}
-int get_sb_single(struct file_system_type *fs_type,
+struct dentry *mount_single(struct file_system_type *fs_type,
int flags, void *data,
- int (*fill_super)(struct super_block *, void *, int),
- struct vfsmount *mnt)
+ int (*fill_super)(struct super_block *, void *, int))
{
struct super_block *s;
int error;
s = sget(fs_type, compare_single, set_anon_super, NULL);
if (IS_ERR(s))
- return PTR_ERR(s);
+ return ERR_CAST(s);
if (!s->s_root) {
s->s_flags = flags;
error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
deactivate_locked_super(s);
- return error;
+ return ERR_PTR(error);
}
s->s_flags |= MS_ACTIVE;
} else {
do_remount_sb(s, flags, data, 0);
}
- simple_set_mnt(mnt, s);
+ return dget(s->s_root);
+}
+EXPORT_SYMBOL(mount_single);
+
+int get_sb_single(struct file_system_type *fs_type,
+ int flags, void *data,
+ int (*fill_super)(struct super_block *, void *, int),
+ struct vfsmount *mnt)
+{
+ struct dentry *root;
+ root = mount_single(fs_type, flags, data, fill_super);
+ if (IS_ERR(root))
+ return PTR_ERR(root);
+ mnt->mnt_root = root;
+ mnt->mnt_sb = root->d_sb;
return 0;
}
vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void *data)
{
struct vfsmount *mnt;
+ struct dentry *root;
char *secdata = NULL;
int error;
goto out_free_secdata;
}
- error = type->get_sb(type, flags, name, data, mnt);
- if (error < 0)
- goto out_free_secdata;
+ if (type->mount) {
+ root = type->mount(type, flags, name, data);
+ if (IS_ERR(root)) {
+ error = PTR_ERR(root);
+ goto out_free_secdata;
+ }
+ mnt->mnt_root = root;
+ mnt->mnt_sb = root->d_sb;
+ } else {
+ error = type->get_sb(type, flags, name, data, mnt);
+ if (error < 0)
+ goto out_free_secdata;
+ }
BUG_ON(!mnt->mnt_sb);
WARN_ON(!mnt->mnt_sb->s_bdi);
mnt->mnt_sb->s_flags |= MS_BORN;
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff