On Sun, Oct 25, 2020 at 04:44:38AM +, Matthew Wilcox wrote:
>
> On my laptop, I have about 31MB allocated to buffer_heads.
>
> buffer_head 182728 299910104 391 : tunables000 :
> slabdata 7690 7690 0
>
> Reducing the size of the buffer_head by 8 bytes
On Sun, Oct 25, 2020 at 11:56:52AM -0400, Theodore Y. Ts'o wrote:
> On Sun, Oct 25, 2020 at 04:44:38AM +, Matthew Wilcox wrote:
> > @@ -3068,6 +3069,12 @@ static int submit_bh_wbc(int op, int op_flags,
> > struct buffer_head *bh,
> > }
> >
> > submit_bio(bio);
> > +}
> > +
> >
On Sun, Oct 25, 2020 at 04:44:38AM +, Matthew Wilcox wrote:
> @@ -3068,6 +3069,12 @@ static int submit_bh_wbc(int op, int op_flags, struct
> buffer_head *bh,
> }
>
> submit_bio(bio);
> +}
> +
> +static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
> +
On my laptop, I have about 31MB allocated to buffer_heads.
buffer_head 182728 299910104 391 : tunables000 :
slabdata 7690 7690 0
Reducing the size of the buffer_head by 8 bytes gets us to 96 bytes,
which means we get 42 per page instead of 39 and saves me
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