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
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acl.h
atomic.h
byteorder.h
callb.h
callo.h
cmn_err.h
condvar.h	Disambiguate condvar API contract	2020-06-18 10:17:50 -07:00
console.h	Mark functions as static	2020-06-18 12:20:38 -07:00
cred.h
ctype.h
debug.h	Remove stale ASSERTV comment	2019-12-06 09:33:27 -08:00
disp.h
dkio.h
errno.h
fcntl.h
file.h
inttypes.h
isa_defs.h	Correctly handle the x32 ABI	2020-05-28 10:28:20 -07:00
kmem_cache.h	Clean up OS-specific ARC and kmem code	2020-06-29 09:01:07 -07:00
kmem.h	Move GFP flags kernel compatibility code	2020-06-08 16:33:46 -07:00
kstat.h	Linux 5.6 compat: struct proc_ops	2020-02-07 11:03:53 -08:00
list.h
Makefile.am	Drop unnecessary srcdir paths	2020-06-24 18:20:18 -07:00
mod_os.h
mutex.h
param.h
proc.h	Fix zfs send progress reporting	2020-04-20 10:12:48 -07:00
processor.h
procfs_list.h
random.h
rwlock.h
shrinker.h	Style fixes	2020-06-27 17:38:55 -07:00
sid.h
signal.h
simd.h
stat.h
strings.h
sunddi.h
sysmacros.h	Move linux qsort def to platform header	2019-12-03 09:49:40 -08:00
systeminfo.h
taskq.h	Improve performance of zio_taskq_member	2020-03-03 10:29:38 -08:00
thread.h
time.h	Linux 5.6 compat: time_t	2020-02-27 09:31:02 -08:00
timer.h
trace_spl.h
trace_taskq.h
trace.h	Add prototypes	2020-06-18 12:21:32 -07:00
tsd.h
types32.h
types.h
uio.h	Add convenience wrappers for common uio usage	2020-06-14 10:09:55 -07:00
user.h
vfs.h
vmem.h	Clean up OS-specific ARC and kmem code	2020-06-29 09:01:07 -07:00
vmsystm.h
vnode.h	Add zfs_file_* interface, remove vnodes	2019-11-21 09:32:57 -08:00
wait.h
zmod.h
zone.h