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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>
(cherry picked from commit 547c4e50929ec6c091d9c16a7b280e829b12b463)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Stefano Garzarella 2024-08-08 10:05:45 +02:00 committed by Michael Tokarev
parent 75e6a93d18
commit 88238cd43a
2 changed files with 6 additions and 2 deletions
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6
block/blkio.c
View File

@ -896,8 +896,10 @@ static int blkio_file_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

@ -2118,6 +2118,8 @@ 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())