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91b2f6ab1c
mirror_zfs/module/zfs
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Brian Behlendorf 91b2f6ab1c Fix ARC behavior on 32-bit systems 
With the addition of the ABD changes consumption of the virtual
address space has been greatly reduced.  This exposed an issue on
CONFIG_HIGHMEM systems where free memory was being calculated
incorrectly.  Functionally this didn't cause any major problems
prior to ABD because a lack of available virtual address space
was used as an indicator of low memory.

This patch makes the following changes to address the issue and
in the process realigns the code further with OpenZFS.  There
are no substantive changes in behavior for 64-bit systems.

* Added CONFIG_HIGHMEM case to the arc_all_memory() and
  arc_free_memory() functions to only consider low memory pages
  on CONFIG_HIGHMEM systems.

* The arc_free_memory() function was updated to return bytes
  instead of pages to be consistent with the other helper
  functions.  In user space we make up some reasonable values
  since currently only testing is performed in this context.

* Adds three new values to the arcstats kstat to provide visibility
  in to the ARC's assessment of the memory situation:
  memory_all_bytes, memory_free_bytes, and memory_available_bytes.

* Added kmem_reap() call to arc_available_memory() for 32-bit
  builds to realign code with OpenZFS.

* Reduced size of test file in /async_destroy_001_pos.ksh to
  speed up test case.  Multiple txgs are still required.

* Move vdevs used by zpool_clear_001_pos and zpool_upgrade_002_pos
  to TEST_BASE_DIR location to speed up test cases.

Reviewed-by: David Quigley <david.quigley@intel.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #5352
Closes #6734
2017-10-16 10:57:55 -07:00
..
abd.c minor improvement to abd_free_pages() 2017-05-02 10:06:18 -07:00
arc.c Fix ARC behavior on 32-bit systems 2017-10-16 10:57:55 -07:00
blkptr.c OpenZFS 8067 - zdb should be able to dump literal embedded block pointer 2017-07-07 11:28:01 -07:00
bplist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
bpobj.c Don't dirty bpobj if it has no entries 2017-05-26 11:42:10 -07:00
bptree.c OpenZFS 7082 - bptree_iterate() passes wrong args to zfs_dbgmsg() 2017-01-17 14:49:24 -08:00
bqueue.c Call cv_signal() with mutex held 2017-06-26 14:36:49 -07:00
dbuf_stats.c Improved dnode allocation and dmu_hold_impl() (#6611) 2017-09-13 15:46:15 -07:00
dbuf.c Scale the dbuf cache with arc_c 2017-10-16 10:57:54 -07:00
ddt_zap.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
ddt.c Cache ddt_get_dedup_dspace() value if there was no ddt changes 2016-12-02 16:59:35 -07:00
dmu_diff.c OpenZFS 6950 - ARC should cache compressed data 2016-09-13 09:58:33 -07:00
dmu_object.c Improved dnode allocation and dmu_hold_impl() (#6611) 2017-09-13 15:46:15 -07:00
dmu_objset.c OpenZFS 8199 - multi-threaded dmu_object_alloc() 2017-06-09 09:43:26 -07:00
dmu_send.c receive_freeobjects() skips freeing some objects 2017-10-16 10:57:55 -07:00
dmu_traverse.c Add TASKQID_INVALID 2016-11-02 12:14:45 -07:00
dmu_tx.c Export symbol dmu_tx_mark_netfree() 2017-09-20 10:25:54 -07:00
dmu_zfetch.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
dmu.c Fix range locking in ZIL commit codepath 2017-08-21 16:46:54 -07:00
dnode_sync.c OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
dnode.c Improved dnode allocation and dmu_hold_impl() (#6611) 2017-09-13 15:46:15 -07:00
dsl_bookmark.c OpenZFS 8377 - Panic in bookmark deletion 2017-06-30 11:11:01 -07:00
dsl_dataset.c OpenZFS 7600 - zfs rollback should pass target snapshot to kernel 2017-07-04 15:29:52 -07:00
dsl_deadlist.c OpenZFS 5428 - provide fts(), reallocarray(), and strtonum() 2017-07-08 20:35:35 -07:00
dsl_deleg.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
dsl_destroy.c OpenZFS 7254 - ztest failed assertion in ztest_dataset_dirobj_verify: dirobjs + 1 == usedobjs 2017-01-27 11:43:42 -08:00
dsl_dir.c Reduce stack usage of dsl_dir_tempreserve_impl 2017-06-12 11:41:03 -07:00
dsl_pool.c Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
dsl_prop.c Fix dsl_props_set_sync_impl to work with nested nvlist 2016-12-20 18:46:59 -08:00
dsl_scan.c OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
dsl_synctask.c Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_userhold.c OpenZFS 5428 - provide fts(), reallocarray(), and strtonum() 2017-07-08 20:35:35 -07:00
edonr_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
fm.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
gzip.c GZIP compression offloading with QAT accelerator 2017-03-22 17:58:47 -07:00
lz4.c Fix LZ4_uncompress_unknownOutputSize caused panic 2017-05-19 13:45:46 -07:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
metaslab.c OpenZFS 8023 - Panic destroying a metaslab deferred range tree 2017-04-09 16:12:35 -07:00
mmp.c Add callback for zfs_multihost_interval 2017-07-25 13:22:20 -04:00
multilist.c OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
pathname.c Add pn_alloc()/pn_free() functions 2016-04-21 09:49:25 -07:00
policy.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
qat_compress.c Change U16 to U32 due to atomic_inc_32_nv 2017-04-25 17:41:58 -07:00
qat_compress.h GZIP compression offloading with QAT accelerator 2017-03-22 17:58:47 -07:00
range_tree.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
refcount.c Linux 4.11 compat: avoid refcount_t name conflict 2017-02-28 16:10:18 -08:00
rrwlock.c Fix spelling 2017-01-03 11:31:18 -06:00
sa.c OpenZFS 8061 - sa_find_idx_tab can be declared more type-safely 2017-04-14 11:11:28 -07:00
sha256.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
skein_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
spa_boot.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
spa_config.c Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
spa_errlog.c OpenZFS 5428 - provide fts(), reallocarray(), and strtonum() 2017-07-08 20:35:35 -07:00
spa_history.c OpenZFS 8508 - Mounting a zpool on 32-bit platforms panics 2017-07-26 09:44:21 -07:00
spa_misc.c Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
spa_stats.c Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
spa.c Report MMP_STATE_NO_HOSTID immediately 2017-07-25 13:22:28 -04:00
space_map.c OpenZFS 8023 - Panic destroying a metaslab deferred range tree 2017-04-09 16:12:35 -07:00
space_reftree.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
trace.c OpenZFS 6531 - Provide mechanism to artificially limit disk performance 2016-05-26 10:11:51 -07:00
txg.c OpenZFS 8063 - verify that we do not attempt to access inactive txg 2017-05-10 13:52:22 -04:00
uberblock.c Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
unique.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
vdev_cache.c Fix wrong offset args in vdev_cache_write 2017-03-28 11:06:22 -07:00
vdev_disk.c Linux 4.14 compat: IO acct, global_page_state, etc (#6655) 2017-09-19 14:24:34 -07:00
vdev_file.c Skip spurious resilver IO on raidz vdev 2017-05-12 17:28:03 -07:00
vdev_label.c Use linear abd in vdev_copy_uberblocks() 2017-10-16 10:57:55 -07:00
vdev_mirror.c Skip spurious resilver IO on raidz vdev 2017-05-12 17:28:03 -07:00
vdev_missing.c Skip spurious resilver IO on raidz vdev 2017-05-12 17:28:03 -07:00
vdev_queue.c Cap maximum aggregate IO size 2017-06-27 10:09:16 -07:00
vdev_raidz_math_aarch64_neon_common.h ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_aarch64_neon.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_aarch64_neonx2.c ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx512bw.c ABD: Adapt avx512bw raidz assembly 2016-12-15 17:31:33 -08:00
vdev_raidz_math_avx512f.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
vdev_raidz_math_impl.h codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_scalar.c ABD Vectorized raidz 2016-11-29 14:34:33 -08:00
vdev_raidz_math_sse2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_ssse3.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz.c Skip spurious resilver IO on raidz vdev 2017-05-12 17:28:03 -07:00
vdev_root.c Skip spurious resilver IO on raidz vdev 2017-05-12 17:28:03 -07:00
vdev.c OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
zap_leaf.c OpenZFS 1300 - filename normalization doesn't work for removes 2017-02-02 14:13:41 -08:00
zap_micro.c Fix dnode allocation race 2017-08-08 10:17:33 -07:00
zap.c Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
zfeature_common.c OpenZFS 2932 - support crash dumps to raidz, etc. pools 2017-04-10 10:24:17 -07:00
zfeature.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zfs_acl.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_byteswap.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
zfs_ctldir.c Linux 4.9 compat: fix zfs_ctldir xattr handling 2017-06-05 11:26:25 -07:00
zfs_debug.c Add line info and SET_ERROR() to ZFS debug log 2017-07-25 23:09:48 -07:00
zfs_dir.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_fm.c OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
zfs_fuid.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_ioctl.c Fix 'zpool clear' on suspended pools 2017-07-25 12:20:52 -07:00
zfs_log.c OpenZFS 7578 - Fix/improve some aspects of ZIL writing 2017-06-09 09:15:37 -07:00
zfs_onexit.c zfsdev_getminor() should check for invalid file handles 2015-06-22 17:02:13 -07:00
zfs_replay.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_rlock.c Fix spelling 2017-01-03 11:31:18 -06:00
zfs_sa.c Modifying XATTRs doesnt change the ctime 2017-09-13 16:05:18 -07:00
zfs_vfsops.c Fix remounting snapshots read-write 2017-08-21 16:46:52 -07:00
zfs_vnops.c Remove unnecessary equality check 2017-10-16 10:57:55 -07:00
zfs_znode.c Fix dnode allocation race 2017-08-08 10:17:33 -07:00
zil.c OpenZFS 7578 - Fix/improve some aspects of ZIL writing 2017-06-09 09:15:37 -07:00
zio_checksum.c Remove dependency on linear ABD 2017-03-29 12:24:51 -07:00
zio_compress.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zio_inject.c Inject zinject(8) a percentage amount of dev errs 2017-06-16 17:21:11 -07:00
zio.c zio_dva_throttle_done() should allow zinjected ZIO 2017-08-21 16:41:22 -07:00
zle.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
zpl_ctldir.c Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
zpl_export.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
zpl_file.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zpl_inode.c Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
zpl_super.c Restructure mount option handling 2017-03-10 09:51:41 -08:00
zpl_xattr.c Modifying XATTRs doesnt change the ctime 2017-09-13 16:05:18 -07:00
zrlock.c OpenZFS 3746 - ZRLs are racy 2017-01-23 10:35:58 -08:00
zvol.c Linux 4.14 compat: IO acct, global_page_state, etc (#6655) 2017-09-19 14:24:34 -07:00