mark_files_ro && sb_end_write

[Oleg Nesterov]

On 10/26, Oleg Nesterov wrote:
>
> As for the changing fs/namespace.c to use percpu_rwsem, I am not sure
> it is that simple and even worthwhile but I won't argue, I do not
> pretend I understand this code.

BTW, speaking about these counters...

Is mark_files_ro()->mnt_drop_write_file() properly balanced?
__mnt_drop_write() looks fine, but sb_end_write?

Oleg.

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