From patchwork Wed Feb 6 12:32:23 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [RFC, V2, 4/7] block: Add bdrv_dedup_control to start and stop deduplication. Date: Wed, 06 Feb 2013 02:32:23 -0000 From: =?utf-8?q?Beno=C3=AEt_Canet?= X-Patchwork-Id: 218710 Message-Id: <1360153946-9617-5-git-send-email-benoit@irqsave.net> To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= , stefanha@redhat.com --- block.c | 16 ++++++++++++++++ include/block/block.h | 1 + 2 files changed, 17 insertions(+) diff --git a/block.c b/block.c index e9d7764..3f0bccc 100644 --- a/block.c +++ b/block.c @@ -4306,6 +4306,22 @@ bool bdrv_has_dedup(BlockDriverState *bs) return bdi.has_dedup; } +/* Start or stop deduplication given the value of enable */ +int bdrv_dedup_control(BlockDriverState *bs, const bool enable) +{ + BlockDriver *drv = bs->drv; + + if (!bdrv_has_dedup(bs)) { + return -EINVAL; + } + + if (drv && drv->bdrv_dedup_control) { + drv->bdrv_dedup_control(bs, enable); + } + + return 0; +} + /* needed for generic scsi interface */ int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) diff --git a/include/block/block.h b/include/block/block.h index 55549ae..e06c571 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -307,6 +307,7 @@ int bdrv_is_inserted(BlockDriverState *bs); int bdrv_media_changed(BlockDriverState *bs); void bdrv_lock_medium(BlockDriverState *bs, bool locked); bool bdrv_has_dedup(BlockDriverState *bs); +int bdrv_dedup_control(BlockDriverState *bs, const bool enable); void bdrv_eject(BlockDriverState *bs, bool eject_flag); const char *bdrv_get_format_name(BlockDriverState *bs); BlockDriverState *bdrv_find(const char *name);