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block/blkio: use FUA flag on write zeroes only if supported

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libblkio supports BLKIO_REQ_FUA with write zeros requests only since
version 1.4.0, so let's inform the block layer that the blkio driver
supports it only in this case. Otherwise we can have runtime errors
as reported in https://issues.redhat.com/browse/RHEL-32878

Fixes: fd66dbd424 ("blkio: add libblkio block driver")
Cc: qemu-stable@nongnu.org
Buglink: https://issues.redhat.com/browse/RHEL-32878
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240808080545.40744-1-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefano Garzarella 2024-08-08 10:05:45 +02:00 committed by Stefan Hajnoczi
parent 0f397dcfec
commit 547c4e5092
2 changed files with 6 additions and 2 deletions
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6
block/blkio.c
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@ -899,8 +899,10 @@ static int blkio_open(BlockDriverState *bs, QDict *options, int flags,
}
bs->supported_write_flags = BDRV_REQ_FUA | BDRV_REQ_REGISTERED_BUF;
bs->supported_zero_flags = BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP |
BDRV_REQ_NO_FALLBACK;
bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK;
#ifdef CONFIG_BLKIO_WRITE_ZEROS_FUA
bs->supported_zero_flags |= BDRV_REQ_FUA;
#endif
qemu_mutex_init(&s->blkio_lock);
qemu_co_mutex_init(&s->bounce_lock);

2
meson.build
View File

@ -2305,6 +2305,8 @@ config_host_data.set('CONFIG_BLKIO', blkio.found())
if blkio.found()
config_host_data.set('CONFIG_BLKIO_VHOST_VDPA_FD',
blkio.version().version_compare('>=1.3.0'))
config_host_data.set('CONFIG_BLKIO_WRITE_ZEROS_FUA',
blkio.version().version_compare('>=1.4.0'))
endif
config_host_data.set('CONFIG_CURL', curl.found())
config_host_data.set('CONFIG_CURSES', curses.found())