From 1d94395d19ccfd501c5ce7ed2b300a1ac72cf0c0 Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Fri, 29 Jun 2018 06:11:49 +0200 Subject: [PATCH 175/268] block-backend: Add blk_co_copy_range RH-Author: Fam Zheng Message-id: <20180629061153.12687-10-famz@redhat.com> Patchwork-id: 81161 O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH v2 09/13] block-backend: Add blk_co_copy_range Bugzilla: 1482537 RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Max Reitz RH-Acked-by: Kevin Wolf It's a BlockBackend wrapper of the BDS interface. Signed-off-by: Fam Zheng Reviewed-by: Stefan Hajnoczi Message-id: 20180601092648.24614-10-famz@redhat.com Signed-off-by: Stefan Hajnoczi (cherry picked from commit b5679fa49c9a70efa7bf01f6efad1a65e2349a0b) Signed-off-by: Fam Zheng Signed-off-by: Miroslav Rezanina --- block/block-backend.c | 18 ++++++++++++++++++ include/sysemu/block-backend.h | 4 ++++ 2 files changed, 22 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index 681b240..5562ec4 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -2217,3 +2217,21 @@ void blk_unregister_buf(BlockBackend *blk, void *host) { bdrv_unregister_buf(blk_bs(blk), host); } + +int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in, + BlockBackend *blk_out, int64_t off_out, + int bytes, BdrvRequestFlags flags) +{ + int r; + r = blk_check_byte_request(blk_in, off_in, bytes); + if (r) { + return r; + } + r = blk_check_byte_request(blk_out, off_out, bytes); + if (r) { + return r; + } + return bdrv_co_copy_range(blk_in->root, off_in, + blk_out->root, off_out, + bytes, flags); +} diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 92ab624..8d03d49 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -232,4 +232,8 @@ void blk_set_force_allow_inactivate(BlockBackend *blk); void blk_register_buf(BlockBackend *blk, void *host, size_t size); void blk_unregister_buf(BlockBackend *blk, void *host); +int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in, + BlockBackend *blk_out, int64_t off_out, + int bytes, BdrvRequestFlags flags); + #endif -- 1.8.3.1