From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42382) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dHkwY-00067B-Rn for qemu-devel@nongnu.org; Mon, 05 Jun 2017 01:52:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dHkwY-0007mj-2S for qemu-devel@nongnu.org; Mon, 05 Jun 2017 01:52:46 -0400 From: Ashijeet Acharya Date: Mon, 5 Jun 2017 11:23:21 +0530 Message-Id: <1496642007-8309-3-git-send-email-ashijeetacharya@gmail.com> In-Reply-To: <1496642007-8309-1-git-send-email-ashijeetacharya@gmail.com> References: <1496642007-8309-1-git-send-email-ashijeetacharya@gmail.com> Subject: [Qemu-devel] [PATCH v5 2/8] vmdk: Rename get_whole_cluster() to vmdk_perform_cow() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: famz@redhat.com Cc: kwolf@redhat.com, jsnow@redhat.com, mreitz@redhat.com, stefanha@gmail.com, qemu-devel@nongnu.org, qemu-block@nongnu.org, Ashijeet Acharya Rename the existing function get_whole_cluster() to vmdk_perform_cow() as its sole purpose is to perform COW for the first and the last allocated clusters if needed. Signed-off-by: Ashijeet Acharya Reviewed-by: Fam Zheng --- block/vmdk.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/block/vmdk.c b/block/vmdk.c index 22be887..73ae786 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1028,8 +1028,8 @@ static void vmdk_refresh_limits(BlockDriverState *bs, Error **errp) } } -/** - * get_whole_cluster +/* + * vmdk_perform_cow * * Copy backing file's cluster that covers @sector_num, otherwise write zero, * to the cluster at @cluster_sector_num. @@ -1037,13 +1037,18 @@ static void vmdk_refresh_limits(BlockDriverState *bs, Error **errp) * If @skip_start_sector < @skip_end_sector, the relative range * [@skip_start_sector, @skip_end_sector) is not copied or written, and leave * it for call to write user data in the request. + * + * Returns: + * VMDK_OK: on success + * + * VMDK_ERROR: in error cases */ -static int get_whole_cluster(BlockDriverState *bs, - VmdkExtent *extent, - uint64_t cluster_offset, - uint64_t offset, - uint64_t skip_start_bytes, - uint64_t skip_end_bytes) +static int vmdk_perform_cow(BlockDriverState *bs, + VmdkExtent *extent, + uint64_t cluster_offset, + uint64_t offset, + uint64_t skip_start_bytes, + uint64_t skip_end_bytes) { int ret = VMDK_OK; int64_t cluster_bytes; @@ -1244,7 +1249,7 @@ static int get_cluster_offset(BlockDriverState *bs, * This problem may occur because of insufficient space on host disk * or inappropriate VM shutdown. */ - ret = get_whole_cluster(bs, extent, cluster_sector * BDRV_SECTOR_SIZE, + ret = vmdk_perform_cow(bs, extent, cluster_sector * BDRV_SECTOR_SIZE, offset, skip_start_bytes, skip_end_bytes); if (ret) { return ret; -- 2.6.2