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vfs: new helper - vfs_ustat()

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... and bury user_get_super()/statfs_by_dentry() - they are
purely internal now.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-01-02 22:28:36 -05:00
parent c972b4bc83
commit cf31e70d6c
5 changed files with 17 additions and 26 deletions
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9
fs/compat.c
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@ -342,16 +342,9 @@ asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct c
*/
asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u)
{
struct super_block *sb;
struct compat_ustat tmp;
struct kstatfs sbuf;
int err;
sb = user_get_super(new_decode_dev(dev));
if (!sb)
return -EINVAL;
err = statfs_by_dentry(sb->s_root, &sbuf);
drop_super(sb);
int err = vfs_ustat(new_decode_dev(dev), &sbuf);
if (err)
return err;