[WIP] Illumos 5746 more checksumming in zfs send

[kernelOfTruth]

Reviewed by: Christopher Siden [email protected]
Reviewed by: George Wilson [email protected]
Reviewed by: Bayard Bell [email protected]
Approved by: Albert Lee [email protected]

References:
illumos/illumos-gate@98110f0
https://www.illumos.org/issues/5746

Porting notes:
Some of those changes were somewhat hard to track due to:
2024041 Remove superfluous statement

044baf0 Use taskq for dump_bytes()

88904bb Illumos 5162 - zfs recv should use loaned arc buffer to avoid copy

kmem_alloc calls were changed to vmem_alloc
in accordance with 77aef6f (Use vmem_alloc() for nvlists) and the kmem-rework

account for ISO C90 warnings (-Werror=declaration-after-statement)
account for error: format '%llx' expects argument of type 'long long unsigned int', but argument X has type 'uint64_t' [-Werror=format=]

arc_buf_t *abuf;
dmu_buf_t *bonus;
zio_cksum_t cksum_orig;
zio_cksum_t *cksump;

Fix whitespace

change
(void) fprintf(stderr, "ERROR; failed to allocate %u bytes\n",
(unsigned)size);
to
(void) fprintf(stderr, "ERROR; failed to allocate %zu bytes\n",
size);

and to account for long unsigned int & match upstream

This commit still has to be adapted in accordance with 044baf0 (Use taskq for dump_bytes()) (?)

Ported-by: kernelOfTruth [email protected]

[kernelOfTruth]

Yes, yes Mr. Buildbot, Sir,

I'll add the 4.2 kernel support ASAP - or better rebase :/ :smirk_cat:

[kernelOfTruth]

Closing in favor of #3611