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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.15.135; envelope-from=vsementsov@virtuozzo.com; helo=EUR01-DB5-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/10 08:04:42 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -37 X-Spam_score: -3.8 X-Spam_bar: --- X-Spam_report: (-3.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fam@euphon.net, kwolf@redhat.com, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @virtuozzo.com) Content-Type: text/plain; charset="utf-8" In order to reuse bdrv_common_block_status_above in bdrv_is_allocated_above, let's support include_base parameter. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Alberto Garcia --- block/coroutines.h | 2 ++ block/io.c | 14 ++++++++++---- 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/block/coroutines.h b/block/coroutines.h index f69179f5ef..1cb3128b94 100644 --- a/block/coroutines.h +++ b/block/coroutines.h @@ -41,6 +41,7 @@ bdrv_pwritev(BdrvChild *child, int64_t offset, unsigned i= nt bytes, int coroutine_fn bdrv_co_common_block_status_above(BlockDriverState *bs, BlockDriverState *base, + bool include_base, bool want_zero, int64_t offset, int64_t bytes, @@ -50,6 +51,7 @@ bdrv_co_common_block_status_above(BlockDriverState *bs, int generated_co_wrapper bdrv_common_block_status_above(BlockDriverState *bs, BlockDriverState *base, + bool include_base, bool want_zero, int64_t offset, int64_t bytes, diff --git a/block/io.c b/block/io.c index f2a89d9417..c3ef387f7e 100644 --- a/block/io.c +++ b/block/io.c @@ -2357,6 +2357,7 @@ early_out: int coroutine_fn bdrv_co_common_block_status_above(BlockDriverState *bs, BlockDriverState *base, + bool include_base, bool want_zero, int64_t offset, int64_t bytes, @@ -2368,8 +2369,8 @@ bdrv_co_common_block_status_above(BlockDriverState *b= s, int ret =3D 0; bool first =3D true; =20 - assert(bs !=3D base); - for (p =3D bs; p !=3D base; p =3D backing_bs(p)) { + assert(include_base || bs !=3D base); + for (p =3D bs; include_base || p !=3D base; p =3D backing_bs(p)) { ret =3D bdrv_co_block_status(p, want_zero, offset, bytes, pnum, ma= p, file); if (ret < 0) { @@ -2408,6 +2409,11 @@ bdrv_co_common_block_status_above(BlockDriverState *= bs, =20 /* [offset, pnum] unallocated on this layer, which could be only * the first part of [offset, bytes]. */ + + if (p =3D=3D base) { + break; + } + assert(*pnum <=3D bytes); bytes =3D *pnum; first =3D false; @@ -2420,7 +2426,7 @@ int bdrv_block_status_above(BlockDriverState *bs, Blo= ckDriverState *base, int64_t offset, int64_t bytes, int64_t *pnum, int64_t *map, BlockDriverState **file) { - return bdrv_common_block_status_above(bs, base, true, offset, bytes, + return bdrv_common_block_status_above(bs, base, false, true, offset, b= ytes, pnum, map, file); } =20 @@ -2437,7 +2443,7 @@ int coroutine_fn bdrv_is_allocated(BlockDriverState *= bs, int64_t offset, int ret; int64_t dummy; =20 - ret =3D bdrv_common_block_status_above(bs, backing_bs(bs), false, offs= et, + ret =3D bdrv_common_block_status_above(bs, bs, true, false, offset, bytes, pnum ? pnum : &dummy, NULL, NULL); if (ret < 0) { --=20 2.21.0