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nbd: add missed aio_context_acquire in nbd_export_new

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blk_invalidate_cache() can call qcow2_invalidate_cache which performs
IO inside.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1453273940-15382-3-git-send-email-den@openvz.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Denis V. Lunev 2016-01-20 10:12:20 +03:00 committed by Paolo Bonzini
parent fae947b096
commit e5f3e12e84
1 changed files with 2 additions and 0 deletions
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2
nbd/server.c
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@ -671,7 +671,9 @@ NBDExport *nbd_export_new(BlockBackend *blk, off_t dev_offset, off_t size,
* that BDRV_O_INCOMING is cleared and the image is ready for write
* access since the export could be available before migration handover.
*/
aio_context_acquire(exp->ctx);
blk_invalidate_cache(blk, NULL);
aio_context_release(exp->ctx);
return exp;
fail: