freebsd-nq/module
Matthew Ahrens 2d4bbd14fc
The abd child/parent relationship does not need to be tracked
ABD's currently track their parent/child relationship.  This applies to
`abd_get_offset()` and `abd_borrow_buf()`.  However, nothing depends on
knowing this relationship, it's only used for consistency checks to
verify that we are not destroying an ABD that's still in use.  When we
are creating/destroying ABD's frequently, the performance impact of
maintaining these data structures (in particular the atomic
increment/decrement operations) can be measurable.

This commit removes this verification code on production builds, but
keeps it when ZFS_DEBUG is set.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #11535
2021-01-30 10:04:42 -08:00
..
avl cppcheck: remove redundant ASSERTs 2021-01-26 16:12:10 -08:00
icp Extending FreeBSD UIO Struct 2021-01-20 21:27:30 -08:00
lua cppcheck: integrete cppcheck 2021-01-26 16:12:26 -08:00
nvpair Links in Source Files 2020-09-02 09:42:12 -07:00
os fix abd_nr_pages_off for gang abd 2021-01-28 09:28:20 -08:00
spl Cleanup linux module kbuild files 2020-06-10 09:24:15 -07:00
unicode Throw const on some strings 2020-10-02 17:44:10 -07:00
zcommon Linux 5.10 compat: use iov_iter in uio structure 2020-12-18 08:48:26 -08:00
zfs The abd child/parent relationship does not need to be tracked 2021-01-30 10:04:42 -08:00
zstd Optimize locking checks in mempool allocator 2020-11-02 12:10:07 -08:00
.gitignore Cleanup linux module kbuild files 2020-06-10 09:24:15 -07:00
Kbuild.in Add zstd support to zfs 2020-08-20 10:30:06 -07:00
Makefile.bsd FreeBSD: decouple ZFS_DEBUG from kernel debug settings 2020-11-24 09:16:46 -08:00
Makefile.in cppcheck: integrete cppcheck 2021-01-26 16:12:26 -08:00