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3c42c9ed84
mirror_zfs/include/sys
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Matthew Ahrens 3c42c9ed84
Clean up OS-specific ARC and kmem code 
OS-specific code (e.g. under `module/os/linux`) does not need to share
its code structure with any other operating systems.  In particular, the
ARC and kmem code need not be similar to the code in illumos, because we
won't be syncing this OS-specific code between operating systems.  For
example, if/when illumos support is added to the common repo, we would
add a file `module/os/illumos/zfs/arc_os.c` for the illumos versions of
this code.

Therefore, we can simplify the code in the OS-specific ARC and kmem
routines.

These changes do not impact system behavior, they are purely code
cleanup.  The changes are:

Arenas are not used on Linux or FreeBSD (they are always `NULL`), so
`heap_arena`, `zio_arena`, and `zio_alloc_arena` can be removed, along
with code that uses them.

In `arc_available_memory()`:
 * `desfree` is unused, remove it
 * rename `freemem` to avoid conflict with pre-existing `#define`
 * remove checks related to arenas
 * use units of bytes, rather than converting from bytes to pages and
   then back to bytes

`SPL_KMEM_CACHE_REAP` is unused, remove it.

`skc_reap` is unused, remove it.

The `count` argument to `spl_kmem_cache_reap_now()` is unused, remove
it.

`vmem_size()` and associated type and macros are unused, remove them.

In `arc_memory_throttle()`, use a less confusing variable name to store
the result of `arc_free_memory()`.

Reviewed-by: George Wilson <gwilson@delphix.com>
Reviewed-by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #10499
2020-06-29 09:01:07 -07:00
..
crypto Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
fm Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
fs Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
lua Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
sysevent Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
abd_impl.h Removing ZERO_PAGE abd_alloc_zero_scatter 2020-06-10 17:54:11 -07:00
abd.h Add abd_cache_reap_now for abd_chunk_cache users 2020-06-17 21:44:13 -07:00
aggsum.h Reduce number of atomic_add() calls in aggsum 2020-02-06 13:21:06 -08:00
arc_impl.h Clean up OS-specific ARC and kmem code 2020-06-29 09:01:07 -07:00
arc.h Improve compatibility with C++ consumers 2020-06-06 12:54:04 -07:00
avl_impl.h
avl.h Restore avl_update() calls and related functions 2020-06-03 09:49:32 -07:00
bitops.h Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
blkptr.h
bplist.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bpobj.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bptree.h
bqueue.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
btree.h Fix typos 2020-06-09 21:24:09 -07:00
dataset_kstats.h port async unlinked drain from illumos-nexenta 2019-02-12 10:41:15 -08:00
dbuf.h Few microoptimizations to dbuf layer 2020-02-05 11:08:44 -08:00
ddt.h Fix gcc10.1 truncation error 2020-06-13 11:02:00 -07:00
dmu_impl.h Prevent race condition in dnode_dest (#10101) 2020-03-12 10:25:56 -07:00
dmu_objset.h File incorrectly zeroed when receiving incremental stream that toggles -L 2020-06-09 10:41:01 -07:00
dmu_recv.h remove unneeded member drc_err of dmu_recv_cookie_t 2020-05-14 12:10:29 -07:00
dmu_redact.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
dmu_send.h Add 'zfs send --saved' flag 2020-01-10 10:16:58 -08:00
dmu_traverse.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
dmu_tx.h Linux 4.19-rc3+ compat: Remove refcount_t compat 2018-09-26 10:29:26 -07:00
dmu_zfetch.h Replace zf_rwlock with a mutex 2019-07-25 11:57:58 -07:00
dmu.h File incorrectly zeroed when receiving incremental stream that toggles -L 2020-06-09 10:41:01 -07:00
dnode.h Prevent race condition in dnode_dest (#10101) 2020-03-12 10:25:56 -07:00
dsl_bookmark.h zcp: add zfs.sync.bookmark 2020-02-11 13:19:17 -08:00
dsl_crypt.h dmu_objset_from_ds must be called with dp_config_rwlock held 2020-03-12 10:55:02 -07:00
dsl_dataset.h Improve compatibility with C++ consumers 2020-06-06 12:54:04 -07:00
dsl_deadlist.h Add fast path for zfs_ioc_space_snaps() handling of empty_bpobj 2019-08-20 11:34:52 -07:00
dsl_deleg.h Remove code for zfs remap 2019-06-24 16:44:01 -07:00
dsl_destroy.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
dsl_dir.h Add 'zfs wait' command 2020-04-01 10:02:06 -07:00
dsl_pool.h Eliminate Linux specific inode usage from common code 2019-12-11 11:53:57 -08:00
dsl_prop.h Support inheriting properties in channel programs 2020-01-22 17:03:17 -08:00
dsl_scan.h Remove limit on number of async zio_frees of non-dedup blocks 2020-02-14 08:39:46 -08:00
dsl_synctask.h OpenZFS 9425 - channel programs can be interrupted 2019-06-22 16:51:46 -07:00
dsl_userhold.h
edonr.h
efi_partition.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
frame.h
hkdf.h
Makefile.am Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
metaslab_impl.h Use a struct to organize metaslab-group-allocator fields 2020-04-22 10:26:56 -07:00
metaslab.h Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
mmp.h Add zfs_multihost_interval tunable handler for FreeBSD 2020-06-23 13:32:42 -07:00
mntent.h Add FreeBSD required defines to mntent.h 2019-11-30 15:49:09 -08:00
mod.h Wrap Linux module macros 2019-11-01 10:41:03 -07:00
multilist.h Avoid extra taskq_dispatch() calls by DMU 2019-06-25 12:03:38 -07:00
note.h Update build system and packaging 2018-05-29 16:00:33 -07:00
nvpair_impl.h OpenZFS 9580 - Add a hash-table on top of nvlist to speed-up operations 2018-07-30 11:30:03 -07:00
nvpair.h Add new fnvlist_lookup_* functions 2018-10-03 15:30:55 -07:00
objlist.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
pathname.h Disable unused pathname::pn_path* (unneeded in Linux) 2019-07-15 13:57:56 -07:00
qat.h QAT related bug fixes 2019-09-12 13:33:44 -07:00
range_tree.h Improve compatibility with C++ consumers 2020-06-06 12:54:04 -07:00
refcount.h Prevent race in blkptr_verify against device removal 2019-08-13 21:24:43 -06:00
rrwlock.h OpenZFS restructuring - zfs_ioctl 2019-09-27 10:46:28 -07:00
sa_impl.h Linux 4.19-rc3+ compat: Remove refcount_t compat 2018-09-26 10:29:26 -07:00
sa.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
skein.h
spa_boot.h
spa_checkpoint.h Serialize ZTHR operations to eliminate races 2019-01-13 10:09:46 -08:00
spa_checksum.h
spa_impl.h Add separate field for indicating that spa is in middle of split 2020-04-09 09:59:31 -07:00
spa_log_spacemap.h Log Spacemap Project 2019-07-16 10:11:49 -07:00
spa.h Trim L2ARC 2020-06-09 10:15:08 -07:00
space_map.h Log Spacemap Project 2019-07-16 10:11:49 -07:00
space_reftree.h Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
sysevent.h
txg_impl.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
txg.h OpenZFS 9425 - channel programs can be interrupted 2019-06-22 16:51:46 -07:00
u8_textprep_data.h
u8_textprep.h
uberblock_impl.h MMP interval and fail_intervals in uberblock 2019-03-21 12:47:57 -07:00
uberblock.h
uio_impl.h deadlock between mm_sem and tx assign in zfs_write() and page fault 2018-10-16 11:11:24 -07:00
unique.h
uuid.h
vdev_disk.h Make struct vdev_disk_t be platform private 2020-06-16 11:43:33 -07:00
vdev_file.h Add zfs_file_* interface, remove vnodes 2019-11-21 09:32:57 -08:00
vdev_impl.h Trim L2ARC 2020-06-09 10:15:08 -07:00
vdev_indirect_births.h OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_indirect_mapping.h OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_initialize.h Add TRIM support 2019-03-29 09:13:20 -07:00
vdev_raidz_impl.h Add prototypes 2020-06-18 12:21:32 -07:00
vdev_raidz.h Linux 5.0 compat: SIMD compatibility 2019-07-12 09:31:20 -07:00
vdev_removal.h panic in removal_remap test on 4K devices 2019-06-13 13:12:39 -07:00
vdev_trim.h Trim L2ARC 2020-06-09 10:15:08 -07:00
vdev.h Improve compatibility with C++ consumers 2020-06-06 12:54:04 -07:00
xvattr.h Linux 4.18 compat: inode timespec -> timespec64 2018-06-19 21:51:18 -07:00
zap_impl.h
zap_leaf.h Fix ENOSPC in "Handle zap_add() failures in ..." 2018-04-18 14:19:50 -07:00
zap.h fat zap should prefetch when iterating 2019-06-12 13:13:09 -07:00
zcp_global.h
zcp_iter.h
zcp_prop.h
zcp_set.h Support setting user properties in a channel program 2020-02-14 13:41:42 -08:00
zcp.h async zvol minor node creation interferes with receive 2020-02-03 09:33:14 -08:00
zfeature.h
zfs_acl.h Return an error code from zfs_acl_chmod_setattr 2019-11-01 10:19:11 -07:00
zfs_context.h Clean up OS-specific ARC and kmem code 2020-06-29 09:01:07 -07:00
zfs_debug.h Remove sdt.h 2019-10-25 13:38:37 -07:00
zfs_delay.h Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs_file.h Re-share zfsdev_getminor and zfs_onexit_fd_hold 2020-02-28 14:50:32 -08:00
zfs_fuid.h Replace sprintf()->snprintf() and strcpy()->strlcpy() 2020-06-07 11:42:12 -07:00
zfs_ioctl_impl.h Restore support for in-kernel ZFS ioctls 2020-06-08 13:57:22 -07:00
zfs_ioctl.h drr_begin: can't forward declare untagged struct 2020-06-16 11:57:04 -07:00
zfs_onexit.h Remove deduplicated send/receive code 2020-04-23 10:06:57 -07:00
zfs_project.h Minor diff reduction with ZoF in include/sys 2019-11-27 11:11:03 -08:00
zfs_quota.h File incorrectly zeroed when receiving incremental stream that toggles -L 2020-06-09 10:41:01 -07:00
zfs_ratelimit.h
zfs_rlock.h Prefix struct rangelock 2019-11-01 10:37:33 -07:00
zfs_sa.h
zfs_stat.h
zfs_sysfs.h Fix in-kernel sysfs entries 2018-09-06 21:44:52 -07:00
zfs_znode.h Fix typos 2020-06-09 21:24:09 -07:00
zil_impl.h make zil max block size tunable 2019-06-10 11:48:42 -07:00
zil.h Add prototypes 2020-06-18 12:21:32 -07:00
zio_checksum.h
zio_compress.h lz4_decompress_abd declared but not defined 2019-06-13 13:14:34 -07:00
zio_crypt.h Fix typos 2020-06-09 21:24:09 -07:00
zio_impl.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
zio_priority.h Add TRIM support 2019-03-29 09:13:20 -07:00
zio.h Improve compatibility with C++ consumers 2020-06-06 12:54:04 -07:00
zrlock.h
zthr.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
zvol_impl.h Connect dataset_kstats for FreeBSD 2020-06-05 17:17:02 -07:00
zvol.h async zvol minor node creation interferes with receive 2020-02-03 09:33:14 -08:00