Re: [patch] fs: scale vfsmount refcount (was Re: rcu-walk and dcache scaling tree update and status)

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On 2010-12-14, at 05:40, Nick Piggin wrote:
> +static inline void add_mnt_count(struct vfsmount *mnt, int n)
> +static inline void set_mnt_count(struct vfsmount *mnt, int n)
> +static inline void inc_mnt_count(struct vfsmount *mnt)
> +static inline void dec_mnt_count(struct vfsmount *mnt)
> +unsigned int count_mnt_count(struct vfsmount *mnt)

Minor nit - it is easier to find these related functions via tag
completion if they are of the form "mnt_count_{add,set,inc,dec}"
and it would also be more consistent and easier to understand if
you rename count_mnt_count() to mnt_count_sum() or mnt_count_read().

This also follows the kernel naming convention much more closely
(e.g. atomic_{inc,dec,add,sub,set,read}(), mutex_{init,lock,unlock}(),
etc), which is normally of the form {type}_{action}.

Yes, I see the other {inc,dec,count}_mnt_writers() functions
exist, but I'd prefer not to add more bad function names to
the kernel.  Maybe a separate patch to clean up those names is
in order...

Cheers, Andreas





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