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bh=fu1fJvLMjQVman1pVaxRT/tGA4ZJ0E7xnvhdnOGg5nM=; b=OvxTeh92PQMQzaz63+67MWfKlnCHewum037iJEs2MasroUpJRZ5mLJvcn2uMFVL0iRsYTE nb/K5QeKNS4ngeUWRnKRzNMN8HEG0ivB4g9NPc8ffjwUfl4vKg8ZZlYMmIBYhZdXhFHfjB fzCbSTAywjH7I9z4qjEeonoZAGTZ6qs= X-MC-Unique: YfJMixDfMO24UwQATGkm3A-1 From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PULL 12/24] block: BDRVReopenState: drop replace_backing_bs field Date: Wed, 30 Jun 2021 18:01:54 +0200 Message-Id: <20210630160206.276439-13-kwolf@redhat.com> In-Reply-To: <20210630160206.276439-1-kwolf@redhat.com> References: <20210630160206.276439-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.435, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no 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: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Vladimir Sementsov-Ogievskiy It's used only in bdrv_reopen_commit(). "backing" is covered by the loop through all children except for case when we removed backing child during reopen. Make it more obvious and drop extra boolean field: qdict_del will not fail if there is no such entry. Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20210610120537.196183-8-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf --- include/block/block.h | 1 - block.c | 10 ++++------ 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/include/block/block.h b/include/block/block.h index 8e707a83b7..d28022e761 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -208,7 +208,6 @@ typedef struct BDRVReopenState { int flags; BlockdevDetectZeroesOptions detect_zeroes; bool backing_missing; - bool replace_backing_bs; /* new_backing_bs is ignored if this is fals= e */ BlockDriverState *old_backing_bs; /* keep pointer for permissions upda= te */ QDict *options; QDict *explicit_options; diff --git a/block.c b/block.c index 0a73335380..ca11078cd2 100644 --- a/block.c +++ b/block.c @@ -4296,7 +4296,6 @@ static int bdrv_reopen_parse_backing(BDRVReopenState = *reopen_state, return -EINVAL; } =20 - reopen_state->replace_backing_bs =3D true; reopen_state->old_backing_bs =3D bs->backing ? bs->backing->bs : NULL; return bdrv_set_backing_noperm(bs, new_backing_bs, set_backings_tran, = errp); } @@ -4550,17 +4549,16 @@ static void bdrv_reopen_commit(BDRVReopenState *reo= pen_state) bs->open_flags =3D reopen_state->flags; bs->detect_zeroes =3D reopen_state->detect_zeroes; =20 - if (reopen_state->replace_backing_bs) { - qdict_del(bs->explicit_options, "backing"); - qdict_del(bs->options, "backing"); - } - /* Remove child references from bs->options and bs->explicit_options. * Child options were already removed in bdrv_reopen_queue_child() */ QLIST_FOREACH(child, &bs->children, next) { qdict_del(bs->explicit_options, child->name); qdict_del(bs->options, child->name); } + /* backing is probably removed, so it's not handled by previous loop */ + qdict_del(bs->explicit_options, "backing"); + qdict_del(bs->options, "backing"); + bdrv_refresh_limits(bs, NULL, NULL); } =20 --=20 2.31.1