Two small patches: the first one improves read randomness to avoid excessive device read cache hit for a device with very few written zones. With this patch applied, on a 14TB SMR disk with only 100 zones written, random read performance result change from several thousands IOPS down to a more disk-like 100 IOPS or so. The second patch cleans up zbd related declarations. Damien Le Moal (2): zbd: Improve read randomness zbd: Remove inexitent function declaration zbd.c | 10 +++++++++- zbd.h | 12 ------------ 2 files changed, 9 insertions(+), 13 deletions(-) -- 2.17.1