On Fri, Sep 18, 2009 at 01:06:02PM -0700, akpm@xxxxxxxxxxxxxxxxxxxx wrote:
> From: Miklos Szeredi <mszeredi@xxxxxxx>
>
> The patch
>
> "vfs: fix d_path() for unreachable paths"
>
> generally changed d_path() to report unreachable paths with a special
> prefix. This has an effect on /proc/${PID}/maps as well for memory maps
> set up with shmem_file_setup() or hugetlb_file_setup(). These functions
> set up unlinked files under a kernel-private vfsmount. Since this
> vfsmount is unreachable from userspace, these maps will be reported with
> the "(unreachable)" prefix.
>
> This is undesirable, because it changes the kernel ABI and might break
> applications for no good reason.
I'd rather see 17, 19 and 20 collapsed...
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