Commit Graph

6969 Commits

Author SHA1 Message Date
Rich Ercolani
50353dbd05
Let zfs diff be more permissive
In the current world, `zfs diff` will die on certain kinds of errors
that come up on ordinary, not-mangled filesystems - like EINVAL,
which can come from a file with multiple hardlinks having the one
whose name is referenced deleted.

Since it should always be safe to continue, let's relax about all
error codes - still print something for most, but don't immediately
abort when we encounter them.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes #12072
2021-06-04 15:00:39 -06:00
jharmening
8dddb25d2c
FreeBSD: incorporate changes to the VFS_QUOTACTL(9) KPI
VFS_QUOTACTL(9) has been updated to allow each filesystem to indicate
whether it has changed the busy state of the mount.  The filesystem
may still assume that its .vfs_quotactl entrypoint is always called
with the mount busied, but only needs to unbusy the mount (and clear
*mp_busy) if it does something that actually requires the mount to be
unbusied.  It no longer needs to blindly copy-paste the UFS protocol
for calling vfs_unbusy(9) for the Q_QUOTAOFF and Q_QUOTAON commands.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Jason Harmening <jason.harmening@gmail.com>
Closes #12052
2021-06-04 14:11:08 -06:00
Ryan Moeller
1f8e5b6cb8
Fix error check in nvlist_print_json_string
Move check for errors from mbrtowc() into the loop.  The error values
are not actually negative, so we don't break out of the loop when they
are encountered.

Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #12175
Closes #12176
2021-06-04 13:53:44 -06:00
наб
f84fe3fc87 Lint most manpages
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12129
2021-06-04 12:48:31 -07:00
наб
4a98300feb mancheck: accept lints, accept lint overrides
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12129
2021-06-04 12:48:26 -07:00
Brian Behlendorf
7837845822
Linux: Set spl_kmem_cache_slab_limit when page size !4K
For small objects the kernel's slab implementation is very fast and
space efficient. However, as the allocation size increases to
require multiple pages performance suffers. The SPL kmem cache
allocator was designed to better handle these large allocation
sizes. Therefore, on Linux the kmem_cache_* compatibility wrappers
prefer to use the kernel's slab allocator for small objects and
the custom SPL kmem cache allocator for larger objects.

This logic was effectively disabled for all architectures using
a non-4K page size which caused all kmem caches to only use the
SPL implementation. Functionally this is fine, but the SPL code
which calculates the target number of objects per-slab does not
take in to account that __vmalloc() always returns page-aligned
memory. This can result in a massive amount of wasted space when
allocating tiny objects on a platform using large pages (64k).

To resolve this issue we set the spl_kmem_cache_slab_limit cutoff
to 16K for all architectures. 

This particular change does not attempt to update the logic used
to calculate the optimal number of pages per slab. This remains
an issue which should be addressed in a future change.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #12152
Closes #11429
Closes #11574
Closes #12150
2021-06-03 14:37:45 -06:00
наб
739cfb965b libzfs: convert to -fvisibility=hidden
Also mark all printf-like funxions in libzfs_impl.h as printf-like
and add --no-show-locs to storeabi, in hopes diffs will make more sense
in future

This removes these symbols from libzfs:
  D nfs_only
  T SHA256Init
  T SHA2Final
  T SHA2Init
  T SHA2Update
  T SHA384Init
  T SHA512Init
  D share_all_proto
  D smb_only
  T zfs_is_shared_proto
  W zpool_mount_datasets
  W zpool_unmount_datasets

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12048
2021-06-03 13:17:55 -07:00
наб
e00aae4be2 libefi: efi_get_devname: don't allocate procfs path
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12048
2021-06-03 13:17:49 -07:00
наб
eefaa55f64 libzfs: don't distribute libzfs_impl.h
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12048
2021-06-03 13:17:35 -07:00
наб
94f942c658
libspl: staticify buf and pagesize, rename aok to libspl_assert_ok
Exporting names this short can easily cause nasty collisions with user code.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12050
2021-06-03 11:04:13 -06:00
Colm
f97142c748
A couple of small style cleanups
In `zpool_load_compat()`:

  * initialize `l_features[]` with a loop rather than a static
    initializer.

  * don't redefine system constants; use private names instead

Rationale here:

When an array is initialized using a static {foo}, only the specified
members are initialized to the provided values, the rest are
initialized to zero. While B_FALSE is of course zero, it feels
unsafe to rely on this being true forever, so I'm inclined to sacrifice
a few microseconds of runtime here and initialize using a loop.

When looking for the correct combination of system constants to use
(in open() and mmap()), I prefer to use private constants rather than
redefining system ones; due to the small chance that the system
ones might be referenced later in the file. So rather than defining
O_PATH and MAP_POPULATE, I use distinct constant names.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Colm Buckley <colm@tuatha.org>
Closes #12156
2021-06-03 09:13:42 -06:00
наб
f645d4416f zfs-module-parameters.5: remove nonexistent parameters
zfs_arc_overflow_shift was never a parameter:
ca0bf58d65 ("Illumos 5497 - lock
contention on arcs_mtx") is the only result in
git log -Soverflow_shift, and it wasn't exposed then, nor is it now

zfs_read_chunk_size was renamed to zfs_vnops_read_chunk_size in
e53d678d4a ("Share zfs_fsync, zfs_read,
zfs_write, et al between Linux and FreeBSD")

zio_decompress_fail_fraction was never a parameter: it was added in
c3bd3fb4ac ("OpenZFS 9403 - assertion
failed in arc_buf_destroy()") as a developer aid for setting in zdb, but
it's a dangerous test tunable and has no place in public documentation,
(not to mention that it obviously doesn't work):
> Although this did uncover a few low priority issues, this
  unfortuantely also causes ztest to ASSERT in many locations where the
  code is working correctly since it is designed to fail on IO errors.
  Developers can manually set this variable with the '-o' option to find
  and debug issues.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12157
2021-06-02 12:53:22 -07:00
наб
ace760a0b4 spl-module-parameters.5: remove spl_kmem_cache_{expire,obj_per_slab_min}
Both were removed in 4fbdb10c7b ("remove
kmem_cache module parameter KMC_EXPIRE_AGE")

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12157
2021-06-02 12:52:32 -07:00
Rich Ercolani
6c7c7201d9
Quick fixes for two ZTS failures
On FreeBSD 14, these two tests started erroring out like the
objects they're attempting to examine don't exist.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes #12165
2021-06-01 15:34:19 -06:00
Rich Ercolani
8bd41ebd54
Added another missed case to arc_summary3
It turns out that sometimes, evidently only when run inside the
ZTS handler, arc_summary3 | head > /dev/null will die with ENOTCONN,
and ruin the test run.

Added handling for that.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes #12160
2021-06-01 15:20:50 -06:00
Ryan Moeller
e1af0d0d73
libzfs_core: Fix some style violations
Made function names start on a new line. Added a blank line between
functions. This helps when grepping for functions.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #12137
2021-06-01 15:13:26 -06:00
grembo
65d9212aee
FreeBSD boot code reminder after zpool upgrade
There used to be a warning after upgrading a zpool in FreeBSD, so users
won't forget to update the boot loader that pool is booted from.

This change brings this warning back, but only if the bootfs property
is set on the pool, which should be sufficient for the vast majority of
FreeBSD installations. People running something custom are most likely
aware of what to do after an upgrade in their specific environment.

Functionality is implemented in an OS specific helper function.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Co-authored-by: Michael Gmelin <grembo@FreeBSD.org>
Signed-off-by: Michael Gmelin <grembo@FreeBSD.org>
Closes #12099
Closes #12104
2021-06-01 15:03:49 -06:00
Rich Ercolani
3f81aba766
Remove iov_iter_advance() for iter_write
The additional iter advance is incorrect, as copy_from_iter() has
already done the right thing.  This will result in the following
warning being printed to the console as of the 5.12 kernel.

    Attempted to advance past end of bvec iter

This change should have been included with #11378 when a
similar change was made on the read side.

Suggested-by: @siebenmann
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Issue #11378
Closes #12041
Closes #12155
2021-06-01 11:58:08 -07:00
наб
f7d7ee0583 Turn checkbashisms into a make target
make_gitrev.sh actually breaks checkbashisms' parser,
which /insists/ that the end-of-line " is actually a string start

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12101
2021-06-01 11:38:54 -07:00
наб
c3ef9f7528 Turn shellcheck into a normal make target. Fix new files it caught
This checks every file it checked (and a few more),
but explicitly instead of "if it works it works" best-effort
(which wasn't that good anyway)

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #10512
Closes #12101
2021-06-01 11:38:49 -07:00
наб
d3858ab788 udev/rules.d: .gitignore: glob all rules
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12101
2021-06-01 11:38:45 -07:00
наб
8d5f211fc8 i-t: don't suggest zpool-import with altroot to /root
This *will fail* when remounted by the real root

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12148
2021-05-29 21:33:53 -07:00
наб
7b5bf4758b i-t: let rootdelay= set $ZFS_INITRD_PRE_MOUNTROOT_SLEEP
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Ref: https://github.com/openzfs/zfs/issues/11420#issuecomment-850338673
Closes #11663
Closes #12148
2021-05-29 21:32:48 -07:00
наб
d484a7255b
zstream: force-install zstreamdump link
Accidentally introduced by commit dd00925e8d.

Force-install the zstreamdump link, this is a supported configuration
and the install should not fail if it needs to overwrite an existing
file.

Also cd to work around some funny platforms as noted in AC_PROG_LN_S doc

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12143
2021-05-29 20:37:05 -07:00
наб
102c91b4f8 Widen mancheck to all of man and test-runner
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:37 -07:00
наб
4910903c07 test-runner.1: modernise
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:32 -07:00
наб
d44449025c zfs-events.5: modernise
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:26 -07:00
наб
c3fb6653b5 vdev_id.conf.5: modernise
Also yeet pci_slot since it doesn't seem to exist?

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:21 -07:00
наб
56454b0391 man: use Nm/Cm/Fl consistently
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:19 -07:00
наб
1f3cbcfcc5 zed.8: modernise
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:14 -07:00
наб
3bcbb6af16 cstyle.1: modernise
Also remove note about the OS/Net consolidation, now the illumos gate

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:07 -07:00
наб
76b8f7cf53 vdev_id.8: modernise, note scsi topology
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:01 -07:00
наб
5aace42ce7 zhack.1: modernise
The spacing on zhack    feature stat    pool is a bit iffy(?)

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:22:00 -07:00
наб
2c9c5bc859 zpool_influxdb.8: modernise
Also rip out the section about potentially including in the OpenZFS
distribution and simplify -e description

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:59 -07:00
наб
3d00fbf9a0 zinject.8: modernise
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:58 -07:00
наб
3365d2cf71 raidz_test.1: modernise
Also re-add articles left out by the slav who wrote this

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:56 -07:00
наб
defa5a0ae5 zpoolprops.8: fix spacing in ashift
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:55 -07:00
наб
2b42a1e57e fsck.zfs.8: modernise
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:54 -07:00
наб
639871363a arcstat.1: modernise
Also slim down the description a tad

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:53 -07:00
наб
8134178f3b ztest.1: modernise
I fixed a few typos, but avoided changing anything beyond that;
the sould of the document should be preserved

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:52 -07:00
наб
b1821d06c3 zgenhostid.8: use single-line indent macro for single-line examples
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12125
2021-05-29 20:21:46 -07:00
наб
757df52928 libzfs: add zfs_get_underlying_type. Stop including libzfs_impl.h in cmd
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12116
2021-05-29 14:26:38 -07:00
наб
e618e4a4ff include: move SPA_MINBLOCKSHIFT and zio_encrypt to sys/fs/zfs.h
These are used by userspace, so should live in a public header

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12116
2021-05-29 14:26:32 -07:00
наб
f00f469052 libzfs: format safety
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12116
2021-05-29 14:26:25 -07:00
наб
c4e5a07fd0 libzfs: expose zfs_mount_delegation_check
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12116
2021-05-29 14:25:48 -07:00
Manoj Joseph
45516b4a0a
long options for ztest
This change introduces long options for ztest. It builds the usage
message as well as the long_options array from a single table. It also
adds #defines for the default values.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Manoj Joseph <manoj.joseph@delphix.com>
Closes #12117
2021-05-28 16:06:07 -06:00
Paul Dagnelie
5d59178e98
Don't direct to freenode in issue template
While Libera doesn't yet have a webchat client, we should at least
direct them to the right network. Once a webchat client is available,
we can direct them to it.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #12127
2021-05-28 15:08:41 -06:00
Armin Wehrfritz
6465e590dc
RPM: Explicitly set the required min/max kernel version for the DKMS package
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Armin Wehrfritz <dkxls23@gmail.com>
Closes #12124
2021-05-27 23:06:45 -07:00
Rich Ercolani
d66b817f0a
Minor fix to configure on s390x
configure on s390x has a key check fail with an error about
a variable being used uninitialized. So let's initialize it.

Reviewed-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes #12126
2021-05-27 22:39:53 -07:00
Alexander Motin
86706441a8
Introduce write-mostly sums
wmsum counters are a reduced version of aggsum counters, optimized for
write-mostly scenarios.  They do not provide optimized read functions,
but instead allow much cheaper add function.  The primary usage is
infrequently read statistic counters, not requiring exact precision.

The Linux implementation is directly mapped into percpu_counter KPI.
The FreeBSD implementation is directly mapped into counter(9) KPI.
In user-space due to lack of better implementation mapped to aggsum.

Unfortunately neither Linux percpu_counter nor FreeBSD counter(9)
provide sufficient functionality to completelly replace aggsum, so
it still remains to be used for several hot counters.

Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #12114
2021-05-27 14:27:29 -06:00