Commit 72d219e2 authored by Fam Zheng's avatar Fam Zheng Committed by Stefan Hajnoczi
Browse files

raw: Implement copy offloading 



Just pass down to ->file.

Signed-off-by: default avatarFam Zheng <famz@redhat.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180601092648.24614-4-famz@redhat.com
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
parent 38445538

block/raw-format.c

+32 −0
Original line number Diff line number Diff line
@@ -497,6 +497,36 @@ static int raw_probe_geometry(BlockDriverState *bs, HDGeometry *geo) 
    return bdrv_probe_geometry(bs->file->bs, geo);

}



static int coroutine_fn raw_co_copy_range_from(BlockDriverState *bs,

                                               BdrvChild *src, uint64_t src_offset,

                                               BdrvChild *dst, uint64_t dst_offset,

                                               uint64_t bytes, BdrvRequestFlags flags)

{

    int ret;



    ret = raw_adjust_offset(bs, &src_offset, bytes, false);

    if (ret) {

        return ret;

    }

    return bdrv_co_copy_range_from(bs->file, src_offset, dst, dst_offset,

                                   bytes, flags);

}



static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs,

                                             BdrvChild *src, uint64_t src_offset,

                                             BdrvChild *dst, uint64_t dst_offset,

                                             uint64_t bytes, BdrvRequestFlags flags)

{

    int ret;



    ret = raw_adjust_offset(bs, &dst_offset, bytes, true);

    if (ret) {

        return ret;

    }

    return bdrv_co_copy_range_to(src, src_offset, bs->file, dst_offset, bytes,

                                 flags);

}



BlockDriver bdrv_raw = {

    .format_name          = "raw",

    .instance_size        = sizeof(BDRVRawState),
@@ -513,6 +543,8 @@ BlockDriver bdrv_raw = { 
    .bdrv_co_pwrite_zeroes = &raw_co_pwrite_zeroes,

    .bdrv_co_pdiscard     = &raw_co_pdiscard,

    .bdrv_co_block_status = &raw_co_block_status,

    .bdrv_co_copy_range_from = &raw_co_copy_range_from,

    .bdrv_co_copy_range_to  = &raw_co_copy_range_to,

    .bdrv_truncate        = &raw_truncate,

    .bdrv_getlength       = &raw_getlength,

    .has_variable_length  = true,