tree e34b78dcb1dbdad2cdf7618ab3ac03670d838128
parent c4d5bf99b7fccf8849316b9f5100525b1beb8237
author Stefan Hajnoczi <stefanha@redhat.com> 1678223066 -0500
committer Kevin Wolf <kwolf@redhat.com> 1682421321 +0200

block: make BlockBackend->disable_request_queuing atomic

This field is accessed by multiple threads without a lock. Use explicit
qatomic_read()/qatomic_set() calls. There is no need for acquire/release
because blk_set_disable_request_queuing() doesn't provide any
guarantees (it helps that it's used at BlockBackend creation time and
not when there is I/O in flight).

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Message-Id: <20230307210427.269214-3-stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>