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convenience helper get_tree_nodev()

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counterpart of mount_nodev().  Switch hugetlb and pseudo to it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-06-01 20:48:55 -04:00
parent 023d066a0d
commit 2ac295d4f0
4 changed files with 13 additions and 2 deletions
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2
fs/hugetlbfs/inode.c
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@ -1299,7 +1299,7 @@ static int hugetlbfs_get_tree(struct fs_context *fc)
int err = hugetlbfs_validate(fc); int err = hugetlbfs_validate(fc);
if (err) if (err)
return err; return err;
return vfs_get_super(fc, vfs_get_independent_super, hugetlbfs_fill_super); return get_tree_nodev(fc, hugetlbfs_fill_super);
} }
static void hugetlbfs_fs_context_free(struct fs_context *fc) static void hugetlbfs_fs_context_free(struct fs_context *fc)

2
fs/libfs.c
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@ -270,7 +270,7 @@ static int pseudo_fs_fill_super(struct super_block *s, struct fs_context *fc)
static int pseudo_fs_get_tree(struct fs_context *fc) static int pseudo_fs_get_tree(struct fs_context *fc)
{ {
return vfs_get_super(fc, vfs_get_independent_super, pseudo_fs_fill_super); return get_tree_nodev(fc, pseudo_fs_fill_super);
} }
static void pseudo_fs_free(struct fs_context *fc) static void pseudo_fs_free(struct fs_context *fc)

8
fs/super.c
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@ -1198,6 +1198,14 @@ int vfs_get_super(struct fs_context *fc,
} }
EXPORT_SYMBOL(vfs_get_super); EXPORT_SYMBOL(vfs_get_super);
int get_tree_nodev(struct fs_context *fc,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc))
{
return vfs_get_super(fc, vfs_get_independent_super, fill_super);
}
EXPORT_SYMBOL(get_tree_nodev);
#ifdef CONFIG_BLOCK #ifdef CONFIG_BLOCK
static int set_bdev_super(struct super_block *s, void *data) static int set_bdev_super(struct super_block *s, void *data)
{ {

3
include/linux/fs_context.h
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@ -151,6 +151,9 @@ extern int vfs_get_super(struct fs_context *fc,
enum vfs_get_super_keying keying, enum vfs_get_super_keying keying,
int (*fill_super)(struct super_block *sb, int (*fill_super)(struct super_block *sb,
struct fs_context *fc)); struct fs_context *fc));
extern int get_tree_nodev(struct fs_context *fc,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc));
extern const struct file_operations fscontext_fops; extern const struct file_operations fscontext_fops;