[LU-7863] ZFS dmu_prefetch API change.

• Type: Task
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.9.0
• Labels: zfs
• Environment: Centos 7.2, ZFS 0.6.5-158, lustre-2.58.50-3.10.0_327
• Assignee: Nathaniel Clark
• Reporter: John Malmberg (Inactive)

Description

The API for the ZFS dmu_prefetch routine has changed. The new routine has both more parameters and the parameters in a different order.

Current work around is to append a hack to the ZFS include/sys/dmu.h used for building lustre.

      cat <<DELIM >> include/sys/dmu.h
#ifndef dmu_prefetch
#pragma GCC diagnostic push
#pragma GCC diagnostic warning "-Wunused-function"
#pragma GCC diagnostic ignored "-Wunused-function"
static inline void dmu_prefetch_old(objset_t *os, uint64_t object,
    uint64_t offset, uint64_t len) {
  dmu_prefetch(os, object, 0, offset, len, 0); }
#define dmu_prefetch dmu_prefetch_old
#pragma GCC diagnostic pop
#define dmu_prefetch dmu_prefetch_old
#endif
DELIM

Issue Links

• is duplicated by: LU-8423 error: too few arguments to function 'dmu_prefetch' dmu_prefetch(dev->od_os, *oid, 0, 0);