Re: [patch] block: make struct block_device cacheline_aligned

[Jeff Moyer <jmoyer@redhat.com>]

Jeff Moyer <jmoyer@redhat.com> writes:

> Hi,
>
> When testing against a pcie ssd or a ramdisk, making the block device
> structure cacheline_aligned provided a significant increase in
> performance:

Self-NACK on this one.  This results in a ton of warnings:

include/linux/fs.h:727: warning: ???__section__??? attribute does not
apply to types
In file included from include/linux/debugfs.h:18,
                 from kernel/trace/trace_probe.h:28,
                 from kernel/trace/trace_kprobe.c:23:
include/linux/fs.h:727: warning: ???__section__??? attribute does not
apply to types

And that leaves me with the task of figuring out if/why this actually
helps.

Cheers,
Jeff
>