tree 096757e6b1a3828e67daa3264a7d73e51e5c432c
parent 65ff757df04a541ae6a34c51267e54244627efef
author Kevin Wolf <kwolf@redhat.com> 1698422012 +0200
committer Kevin Wolf <kwolf@redhat.com> 1699462578 +0100

block: Take graph lock for most of .bdrv_open

Most implementations of .bdrv_open first open their file child (which is
an operation that internally takes the write lock and therefore we
shouldn't hold the graph lock while calling it), and afterwards many
operations that require holding the graph lock, e.g. for accessing
bs->file.

This changes block drivers that follow this pattern to take the graph
lock after opening the child node.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-24-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>