{"id":1307025,"url":"http://patchwork.ozlabs.org/api/patches/1307025/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/616a16649a459538624d5197f988d90fc68d1281.1591801197.git.berto@igalia.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<616a16649a459538624d5197f988d90fc68d1281.1591801197.git.berto@igalia.com>","list_archive_url":null,"date":"2020-06-10T15:03:04","name":"[v8,26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"1f79305df147cf122cf326aa09377899fcf65296","submitter":{"id":65704,"url":"http://patchwork.ozlabs.org/api/people/65704/?format=json","name":"Alberto Garcia","email":"berto@igalia.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/616a16649a459538624d5197f988d90fc68d1281.1591801197.git.berto@igalia.com/mbox/","series":[{"id":182563,"url":"http://patchwork.ozlabs.org/api/series/182563/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=182563","date":"2020-06-10T15:02:49","name":"Add subcluster allocation to qcow2","version":8,"mbox":"http://patchwork.ozlabs.org/series/182563/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/1307025/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/1307025/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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envelope-from=berto@igalia.com;\n helo=fanzine.igalia.com","X-detected-operating-system":"by eggs.gnu.org: First seen = 2020/06/10 11:03:39","X-ACL-Warn":"Detected OS = Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy]","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001,\n 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":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Cc":"Kevin Wolf ,\n Vladimir Sementsov-Ogievskiy ,\n Alberto Garcia , qemu-block@nongnu.org,\n Derek Su , Max Reitz ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n "},"content":"Compressed clusters always have the bitmap part of the extended L2\nentry set to 0.\n\nSigned-off-by: Alberto Garcia \nReviewed-by: Max Reitz \n---\n block/qcow2-cluster.c | 3 +++\n 1 file changed, 3 insertions(+)","diff":"diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c\nindex 2276cee6d6..deff838fe8 100644\n--- a/block/qcow2-cluster.c\n+++ b/block/qcow2-cluster.c\n@@ -861,6 +861,9 @@ int qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,\n BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE_COMPRESSED);\n qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_slice);\n set_l2_entry(s, l2_slice, l2_index, cluster_offset);\n+ if (has_subclusters(s)) {\n+ set_l2_bitmap(s, l2_slice, l2_index, 0);\n+ }\n qcow2_cache_put(s->l2_table_cache, (void **) &l2_slice);\n \n *host_offset = cluster_offset & s->cluster_offset_mask;\n","prefixes":["v8","26/34"]}