Daniel Verkamp b4b48218cf devices: virtio-blk: disarm timer on flush request ... The block device has a flush timer that is started when a write request is received. This is intended to flush any outstanding writes to the disk image if the guest does not issue its own explicit flush request before the timeout. However, the existing implementation did not actually disarm the tirm if the guest submitted a flush, so the flush timer would always fire 60 seconds after the most recent write, even if all previous writes had already been flushed by guest request. Eliminate the extra flush by disarming the flush timer when a VIRTIO_BLK_T_FLUSH request is processed. BUG=None TEST=strace crosvm block device while writing and syncing TEST=dd if=/dev/random of=/dev/vdb conv=fsync bs=4096 count=1 Change-Id: I2cc754c84b4f3f85468381133b40f59c460dd309 Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4316953 Reviewed-by: Takaya Saeki <takayas@chromium.org> Commit-Queue: Daniel Verkamp <dverkamp@chromium.org> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>		2023-04-06 18:10:15 +00:00
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Cargo.toml