From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> To: qemu-devel@nongnu.org, qemu-block@nongnu.org Cc: jsnow@redhat.com, mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com Subject: [Qemu-devel] [PATCH 2/2] blockjob: use blk_new_pinned in block_job_create Date: Fri, 19 Apr 2019 20:48:32 +0300 [thread overview] Message-ID: <20190419174832.146377-3-vsementsov@virtuozzo.com> (raw) In-Reply-To: <20190419174832.146377-1-vsementsov@virtuozzo.com> child_role job already has .stay_at_node=true, so on bdrv_replace_node operation these child are unchanged. Make block job blk behave in same manner, to avoid inconsistent intermediate graph states and workarounds like in mirror. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- block/mirror.c | 6 +----- blockjob.c | 2 +- 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/block/mirror.c b/block/mirror.c index ff15cfb197..c2cb6bccff 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -713,12 +713,8 @@ static int mirror_exit_common(Job *job) &error_abort); bdrv_replace_node(mirror_top_bs, backing_bs(mirror_top_bs), &error_abort); - /* We just changed the BDS the job BB refers to (with either or both of the - * bdrv_replace_node() calls), so switch the BB back so the cleanup does - * the right thing. We don't need any permissions any more now. */ - blk_remove_bs(bjob->blk); + /* We don't need any permissions any more now. */ blk_set_perm(bjob->blk, 0, BLK_PERM_ALL, &error_abort); - blk_insert_bs(bjob->blk, mirror_top_bs, &error_abort); bs_opaque->job = NULL; diff --git a/blockjob.c b/blockjob.c index 730101d282..47466bdfcf 100644 --- a/blockjob.c +++ b/blockjob.c @@ -396,7 +396,7 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver, job_id = bdrv_get_device_name(bs); } - blk = blk_new(perm, shared_perm); + blk = blk_new_pinned(perm, shared_perm); ret = blk_insert_bs(blk, bs, errp); if (ret < 0) { blk_unref(blk); -- 2.18.0
WARNING: multiple messages have this Message-ID (diff)
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> To: qemu-devel@nongnu.org, qemu-block@nongnu.org Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, jsnow@redhat.com, mreitz@redhat.com Subject: [Qemu-devel] [PATCH 2/2] blockjob: use blk_new_pinned in block_job_create Date: Fri, 19 Apr 2019 20:48:32 +0300 [thread overview] Message-ID: <20190419174832.146377-3-vsementsov@virtuozzo.com> (raw) Message-ID: <20190419174832.Jd_SF9BCOFVJxXb8mzpRQ6c6yt-0jnBdCrnLnz8xksg@z> (raw) In-Reply-To: <20190419174832.146377-1-vsementsov@virtuozzo.com> child_role job already has .stay_at_node=true, so on bdrv_replace_node operation these child are unchanged. Make block job blk behave in same manner, to avoid inconsistent intermediate graph states and workarounds like in mirror. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- block/mirror.c | 6 +----- blockjob.c | 2 +- 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/block/mirror.c b/block/mirror.c index ff15cfb197..c2cb6bccff 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -713,12 +713,8 @@ static int mirror_exit_common(Job *job) &error_abort); bdrv_replace_node(mirror_top_bs, backing_bs(mirror_top_bs), &error_abort); - /* We just changed the BDS the job BB refers to (with either or both of the - * bdrv_replace_node() calls), so switch the BB back so the cleanup does - * the right thing. We don't need any permissions any more now. */ - blk_remove_bs(bjob->blk); + /* We don't need any permissions any more now. */ blk_set_perm(bjob->blk, 0, BLK_PERM_ALL, &error_abort); - blk_insert_bs(bjob->blk, mirror_top_bs, &error_abort); bs_opaque->job = NULL; diff --git a/blockjob.c b/blockjob.c index 730101d282..47466bdfcf 100644 --- a/blockjob.c +++ b/blockjob.c @@ -396,7 +396,7 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver, job_id = bdrv_get_device_name(bs); } - blk = blk_new(perm, shared_perm); + blk = blk_new_pinned(perm, shared_perm); ret = blk_insert_bs(blk, bs, errp); if (ret < 0) { blk_unref(blk); -- 2.18.0
next prev parent reply other threads:[~2019-04-19 17:48 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-04-19 17:48 [Qemu-devel] [PATCH 0/2] introduce pinned blk Vladimir Sementsov-Ogievskiy 2019-04-19 17:48 ` Vladimir Sementsov-Ogievskiy 2019-04-19 17:48 ` [Qemu-devel] [PATCH 1/2] block: " Vladimir Sementsov-Ogievskiy 2019-04-19 17:48 ` Vladimir Sementsov-Ogievskiy 2019-04-19 17:48 ` Vladimir Sementsov-Ogievskiy [this message] 2019-04-19 17:48 ` [Qemu-devel] [PATCH 2/2] blockjob: use blk_new_pinned in block_job_create Vladimir Sementsov-Ogievskiy
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