Re: [PATCH v2 15/26] block: Add bio_copy_data()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello,

On Mon, Sep 10, 2012 at 05:22:26PM -0700, Kent Overstreet wrote:
> +void bio_copy_data(struct bio *dst, struct bio *src)
> +{
...
> +		src_p = kmap_atomic(src_bv->bv_page);
> +		dst_p = kmap_atomic(dst_bv->bv_page);
> +
> +		memcpy(dst_p + dst_bv->bv_offset,
> +		       src_p + src_bv->bv_offset,
> +		       bytes);
> +
> +		kunmap_atomic(dst_p);
> +		kunmap_atomic(src_p);

Wrap these in preempt_disable/enable() to allow the function to be
called from any context?

Thanks.

-- 
tejun

--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel


[Index of Archives]     [DM Crypt]     [Fedora Desktop]     [ATA RAID]     [Fedora Marketing]     [Fedora Packaging]     [Fedora SELinux]     [Yosemite Discussion]     [KDE Users]     [Fedora Docs]

  Powered by Linux