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bh=lXizbPfIrIGc6IgigvTm3SgSyrjrrLEJTlKfj6LSoF4=; b=Ic+YctlLBBOqQLPgMiQSbEYpHP1+vNma0JkZCTOl+nuKrGBxIwMpHd3rCXK9x309jJ9eVd 2ewTYSUdSRIZpmvYgAJBO8UlEEJZjUVs51pGKzXNs7DVpnOe7jyns/84jaMKQR7Y9J0M8C qRlRGgioYqyd1Y9WgTykCXUfLSZavVQ= X-MC-Unique: 4Ob2kNUZPwezetl79daUyA-1 From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Subject: [PATCH v2 5/8] block: add a few more notes on locking Date: Mon, 19 Apr 2021 10:55:38 +0200 Message-Id: <20210419085541.22310-6-eesposit@redhat.com> In-Reply-To: <20210419085541.22310-1-eesposit@redhat.com> References: <20210419085541.22310-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eesposit@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; 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charset="utf-8" Reviewed-by: Stefan Hajnoczi Signed-off-by: Paolo Bonzini Signed-off-by: Emanuele Giuseppe Esposito --- include/block/block_int.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/block/block_int.h b/include/block/block_int.h index a1aad5ad2d..67a0777e12 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -154,7 +154,9 @@ struct BlockDriver { */ bool supports_backing; =20 - /* For handling image reopen for split or non-split files */ + /* For handling image reopen for split or non-split files. Called + * with no I/O pending. + */ int (*bdrv_reopen_prepare)(BDRVReopenState *reopen_state, BlockReopenQueue *queue, Error **errp); void (*bdrv_reopen_commit)(BDRVReopenState *reopen_state); @@ -168,6 +170,7 @@ struct BlockDriver { /* Protocol drivers should implement this instead of bdrv_open */ int (*bdrv_file_open)(BlockDriverState *bs, QDict *options, int flags, Error **errp); + /* Called from main thread. */ void (*bdrv_close)(BlockDriverState *bs); =20 =20 --=20 2.30.2