| Message ID | 20240808080545.40744-1-sgarzare@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | block/blkio: use FUA flag on write zeroes only if supported | expand |
On Thu, Aug 08, 2024 at 10:05:45AM GMT, Stefano Garzarella wrote: > 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> > --- > meson.build | 2 ++ > block/blkio.c | 6 ++++-- > 2 files changed, 6 insertions(+), 2 deletions(-) Reviewed-by: Eric Blake <eblake@redhat.com>
On 8/8/24 10:05, Stefano Garzarella wrote: > 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> > --- > meson.build | 2 ++ > block/blkio.c | 6 ++++-- > 2 files changed, 6 insertions(+), 2 deletions(-) Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
On Thu, Aug 08, 2024 at 10:05:45AM +0200, Stefano Garzarella wrote: > 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> > --- > meson.build | 2 ++ > block/blkio.c | 6 ++++-- > 2 files changed, 6 insertions(+), 2 deletions(-) Thanks, applied to my block tree: https://gitlab.com/stefanha/qemu/commits/block Stefan
diff --git a/meson.build b/meson.build index c2a050b844..81ecd4bae7 100644 --- a/meson.build +++ b/meson.build @@ -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()) diff --git a/block/blkio.c b/block/blkio.c index 3d9a2e764c..e0e765af63 100644 --- a/block/blkio.c +++ b/block/blkio.c @@ -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);
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> --- meson.build | 2 ++ block/blkio.c | 6 ++++-- 2 files changed, 6 insertions(+), 2 deletions(-)