From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44459) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bK2zX-0002ef-RP for qemu-devel@nongnu.org; Mon, 04 Jul 2016 08:28:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bK2zU-0005nK-OL for qemu-devel@nongnu.org; Mon, 04 Jul 2016 08:28:47 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:33677 helo=relay.sw.ru) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bK2zU-0005kX-5b for qemu-devel@nongnu.org; Mon, 04 Jul 2016 08:28:44 -0400 From: "Denis V. Lunev" Date: Mon, 4 Jul 2016 15:28:12 +0300 Message-Id: <1467635306-31875-2-git-send-email-den@openvz.org> In-Reply-To: <1467635306-31875-1-git-send-email-den@openvz.org> References: <1467635306-31875-1-git-send-email-den@openvz.org> Subject: [Qemu-devel] [PATCH v5 01/15] block: switch blk_write_compressed() to byte-based interface List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org, qemu-devel@nongnu.org Cc: den@openvz.org, Pavel Butsykin , Jeff Cody , Markus Armbruster , Eric Blake , John Snow , Stefan Hajnoczi , Kevin Wolf From: Pavel Butsykin This is a preparatory patch, which continues the general trend of the transition to the byte-based interfaces. Signed-off-by: Pavel Butsykin Reviewed-by: Stefan Hajnoczi Signed-off-by: Denis V. Lunev CC: Jeff Cody CC: Markus Armbruster CC: Eric Blake CC: John Snow CC: Stefan Hajnoczi CC: Kevin Wolf --- block/block-backend.c | 8 ++++---- block/io.c | 11 +++++++---- include/block/block.h | 4 ++-- include/sysemu/block-backend.h | 4 ++-- qemu-img.c | 6 ++++-- qemu-io-cmds.c | 2 +- 6 files changed, 20 insertions(+), 15 deletions(-) diff --git a/block/block-backend.c b/block/block-backend.c index 34500e6..3c1fc50 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1477,15 +1477,15 @@ int coroutine_fn blk_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, flags | BDRV_REQ_ZERO_WRITE); } -int blk_write_compressed(BlockBackend *blk, int64_t sector_num, - const uint8_t *buf, int nb_sectors) +int blk_pwrite_compressed(BlockBackend *blk, int64_t offset, const void *buf, + int count) { - int ret = blk_check_request(blk, sector_num, nb_sectors); + int ret = blk_check_byte_request(blk, offset, count); if (ret < 0) { return ret; } - return bdrv_write_compressed(blk_bs(blk), sector_num, buf, nb_sectors); + return bdrv_pwrite_compressed(blk_bs(blk), offset, buf, count); } int blk_truncate(BlockBackend *blk, int64_t offset) diff --git a/block/io.c b/block/io.c index 7cf3645..22f20b1 100644 --- a/block/io.c +++ b/block/io.c @@ -1824,8 +1824,8 @@ int bdrv_is_allocated_above(BlockDriverState *top, return 0; } -int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, - const uint8_t *buf, int nb_sectors) +int bdrv_pwrite_compressed(BlockDriverState *bs, int64_t offset, + const void *buf, int bytes) { BlockDriver *drv = bs->drv; int ret; @@ -1836,14 +1836,17 @@ int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, if (!drv->bdrv_write_compressed) { return -ENOTSUP; } - ret = bdrv_check_request(bs, sector_num, nb_sectors); + ret = bdrv_check_byte_request(bs, offset, bytes); if (ret < 0) { return ret; } assert(QLIST_EMPTY(&bs->dirty_bitmaps)); + assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0); + assert((bytes & (BDRV_SECTOR_SIZE - 1)) == 0); - return drv->bdrv_write_compressed(bs, sector_num, buf, nb_sectors); + return drv->bdrv_write_compressed(bs, offset >> BDRV_SECTOR_BITS, buf, + bytes >> BDRV_SECTOR_BITS); } typedef struct BdrvVmstateCo { diff --git a/include/block/block.h b/include/block/block.h index 733a8ec..60cd7d1 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -401,8 +401,8 @@ const char *bdrv_get_node_name(const BlockDriverState *bs); const char *bdrv_get_device_name(const BlockDriverState *bs); const char *bdrv_get_device_or_node_name(const BlockDriverState *bs); int bdrv_get_flags(BlockDriverState *bs); -int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, - const uint8_t *buf, int nb_sectors); +int bdrv_pwrite_compressed(BlockDriverState *bs, int64_t offset, + const void *buf, int bytes); int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs); void bdrv_round_sectors_to_clusters(BlockDriverState *bs, diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index c04af8e..57df069 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -203,8 +203,8 @@ void *blk_aio_get(const AIOCBInfo *aiocb_info, BlockBackend *blk, BlockCompletionFunc *cb, void *opaque); int coroutine_fn blk_co_pwrite_zeroes(BlockBackend *blk, int64_t offset, int count, BdrvRequestFlags flags); -int blk_write_compressed(BlockBackend *blk, int64_t sector_num, - const uint8_t *buf, int nb_sectors); +int blk_pwrite_compressed(BlockBackend *blk, int64_t offset, const void *buf, + int count); int blk_truncate(BlockBackend *blk, int64_t offset); int blk_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors); int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf, diff --git a/qemu-img.c b/qemu-img.c index 0ad6051..5b2b8df 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -1579,7 +1579,9 @@ static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, break; } - ret = blk_write_compressed(s->target, sector_num, buf, n); + ret = blk_pwrite_compressed(s->target, + sector_num << BDRV_SECTOR_BITS, + buf, n << BDRV_SECTOR_BITS); if (ret < 0) { return ret; } @@ -1716,7 +1718,7 @@ static int convert_do_copy(ImgConvertState *s) if (s->compressed) { /* signal EOF to align */ - ret = blk_write_compressed(s->target, 0, NULL, 0); + ret = blk_pwrite_compressed(s->target, 0, NULL, 0); if (ret < 0) { goto fail; } diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index 09e879f..2ae3b14 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -504,7 +504,7 @@ static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset, return -ERANGE; } - ret = blk_write_compressed(blk, offset >> 9, (uint8_t *)buf, count >> 9); + ret = blk_pwrite_compressed(blk, offset, buf, count); if (ret < 0) { return ret; } -- 2.1.4