On Wed, Dec 21 2016, Jeff Layton wrote:
>
> +/*
> + * We borrow the top bit in the i_version to use as a flag to tell us whether
> + * it has been queried since we last bumped it. If it has, then we must bump
> + * it and set the flag. Note that this means that we have to handle wrapping
> + * m
On Thu, 2016-12-22 at 10:38 +0200, Amir Goldstein wrote:
> On Wed, Dec 21, 2016 at 7:03 PM, Jeff Layton wrote:
> >
> > The spinlock is only used to serialize callers that want to increment
> > the counter. We can achieve the same thing with an atomic64_t and
> > get the i_lock out of this codepat
On Wed, Dec 21, 2016 at 7:03 PM, Jeff Layton wrote:
> The spinlock is only used to serialize callers that want to increment
> the counter. We can achieve the same thing with an atomic64_t and
> get the i_lock out of this codepath.
>
Cool work! See some nits and suggestions below.
> +/*
> + * We
The spinlock is only used to serialize callers that want to increment
the counter. We can achieve the same thing with an atomic64_t and
get the i_lock out of this codepath.
Drop the I_VERS_BUMP flag, and instead, borrow the most significant bit
in the counter to use as the flag. With this change,
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