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Matthew Ahrens 7f60329a26 Illumos 5987 - zfs prefetch code needs work 
5987 zfs prefetch code needs work
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Approved by: Gordon Ross <gordon.ross@nexenta.com>

References:
  https://www.illumos.org/issues/5987 zfs prefetch code needs work
  illumos/illumos-gate@cf6106c 5987 zfs prefetch code needs work

Porting notes:
- [module/zfs/dbuf.c]
  - 5f6d0b6 Handle block pointers with a corrupt logical size
- [module/zfs/dmu_zfetch.c]
  - c65aa5b Fix gcc missing parenthesis warnings
  - 428870f Update core ZFS code from build 121 to build 141.
  - 79c76d5 Change KM_PUSHPAGE -> KM_SLEEP
  - b8d06fc Switch KM_SLEEP to KM_PUSHPAGE
  - Account for ISO C90 - mixed declarations and code - warnings
  - Module parameters (new/changed):
    - Replaced zfetch_block_cap with zfetch_max_distance
      (Max bytes to prefetch per stream (default 8MB; 8 * 1024 * 1024))
    - Preserved zfs_prefetch_disable as 'int' for consistency with
      existing Linux module options.
- [include/sys/trace_arc.h]
  - Added new tracepoints
    - DEFINE_ARC_BUF_HDR_EVENT(zfs_arc__sync__wait__for__async);
    - DEFINE_ARC_BUF_HDR_EVENT(zfs_arc__demand__hit__predictive__prefetch);
- [man/man5/zfs-module-parameters.5]
  - Updated man page

Ported-by: kernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2016-01-12 09:02:33 -08:00
..
fm
Revert "Illumos 3749 - zfs event processing should work on R/O root filesystems"
2016-01-11 14:10:30 -08:00
fs
Illumos 4929 - want prevsnap property
2016-01-11 11:58:26 -08:00
arc_impl.h
Illumos 6214 - zpools going south
2015-09-11 11:14:38 -07:00
arc.h
Illumos 5987 - zfs prefetch code needs work
2016-01-12 09:02:33 -08:00
avl_impl.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
avl.h
Illumos 4745 - fix AVL code misspellings
2015-07-10 11:58:37 -07:00
blkptr.h
Illumos 4757, 4913
2014-08-01 14:28:05 -07:00
bplist.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
bpobj.h
Illumos 5810 - zdb should print details of bpobj
2015-05-11 15:10:24 -07:00
bptree.h
Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t
2014-08-06 14:48:41 -07:00
bqueue.h
Illumos 5960, 5925
2016-01-08 15:08:19 -08:00
dbuf.h
Illumos 5960, 5925
2016-01-08 15:08:19 -08:00
ddt.h
Add ddt, ddt_entry, and l2arc_hdr caches
2014-01-07 10:33:11 -08:00
dmu_impl.h
Illumos 4757, 4913
2014-08-01 14:28:05 -07:00
dmu_objset.h
Illumos 6267 - dn_bonus evicted too early
2015-10-13 14:12:02 -07:00
dmu_send.h
Illumos 5765 - add support for estimating send stream size with lzc_send_space when source is a bookmark
2015-05-13 09:03:59 -07:00
dmu_traverse.h
Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t
2014-08-06 14:48:41 -07:00
dmu_tx.h
dmu_tx kstat cleanup
2014-03-04 12:22:24 -08:00
dmu_zfetch.h
Illumos 5987 - zfs prefetch code needs work
2016-01-12 09:02:33 -08:00
dmu.h
Illumos 5987 - zfs prefetch code needs work
2016-01-12 09:02:33 -08:00
dnode.h
Illumos 5056 - ZFS deadlock on db_mtx and dn_holds
2015-04-28 16:25:34 -07:00
dsl_bookmark.h
Illumos 4368, 4369.
2014-07-29 10:55:29 -07:00
dsl_dataset.h
Illumos 5960, 5925
2016-01-08 15:08:19 -08:00
dsl_deadlist.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
dsl_deleg.h
Illumos 4368, 4369.
2014-07-29 10:55:29 -07:00
dsl_destroy.h
Illumos #3888
2013-11-04 11:18:14 -08:00
dsl_dir.h
Illumos 5056 - ZFS deadlock on db_mtx and dn_holds
2015-04-28 16:25:34 -07:00
dsl_pool.h
Illumos 5981 - Deadlock in dmu_objset_find_dp
2015-07-06 09:31:35 -07:00
dsl_prop.h
Illumos #3464
2013-09-04 16:01:24 -07:00
dsl_scan.h
Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t
2014-08-06 14:48:41 -07:00
dsl_synctask.h
Illumos 4951 - ZFS administrative commands should use reserved space
2015-05-04 09:41:10 -07:00
dsl_userhold.h
Illumos #3740
2013-11-04 11:17:48 -08:00
efi_partition.h
Ext4's typical GPT partition type not recognized
2015-12-04 09:27:00 -08:00
Makefile.am
Illumos 5960, 5925
2016-01-08 15:08:19 -08:00
metaslab_impl.h
Illumos 4976-4984 - metaslab improvements
2014-08-18 08:40:49 -07:00
metaslab.h
Illumos 5213 - panic in metaslab_init due to space_map_open returning ENXIO
2014-11-14 15:37:45 -08:00
mntent.h
Honor xattr=sa dataset property
2015-09-19 14:04:14 -07:00
multilist.h
Illumos 5497 - lock contention on arcs_mtx
2015-06-11 10:27:25 -07:00
nvpair_impl.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
nvpair.h
Replace __va_list with va_list
2014-08-13 10:35:00 -07:00
range_tree.h
Illumos #4374
2014-07-30 09:20:35 -07:00
refcount.h
Illumos #3464
2013-09-04 16:01:24 -07:00
rrwlock.h
Illumos 5008 - lock contention (rrw_exit) while running a read only load
2015-07-06 09:34:13 -07:00
sa_impl.h
Illumos 5056 - ZFS deadlock on db_mtx and dn_holds
2015-04-28 16:25:34 -07:00
sa.h
Prevent SA length overflow
2015-12-30 13:20:12 -08:00
sdt.h
Swap DTRACE_PROBE* with Linux tracepoints
2014-11-17 11:13:55 -08:00
spa_boot.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
spa_impl.h
Revert "Illumos 3749 - zfs event processing should work on R/O root filesystems"
2016-01-11 14:10:30 -08:00
spa.h
Illumos 5746 - more checksumming in zfs send
2015-12-30 14:24:14 -08:00
space_map.h
Illumos 5164-5165 - space map fixes
2014-10-23 15:30:32 -07:00
space_reftree.h
Illumos #4101, #4102, #4103, #4105, #4106
2014-07-22 09:39:16 -07:00
trace_acl.h
Fix build failure with Linux 4.1 and FTRACE
2015-07-29 07:35:06 -07:00
trace_arc.h
Illumos 5987 - zfs prefetch code needs work
2016-01-12 09:02:33 -08:00
trace_dbgmsg.h
Only trigger SET_ERROR tracepoint event on error
2015-12-02 17:16:41 -08:00
trace_dbuf.h
Fix build failure with Linux 4.1 and FTRACE
2015-07-29 07:35:06 -07:00
trace_dmu.h
Fix build failure with Linux 4.1 and FTRACE
2015-07-29 07:35:06 -07:00
trace_dnode.h
Fix build failure with Linux 4.1 and FTRACE
2015-07-29 07:35:06 -07:00
trace_multilist.h
Fix build failure with Linux 4.1 and FTRACE
2015-08-18 16:47:21 -07:00
trace_txg.h
Fix build failure with Linux 4.1 and FTRACE
2015-07-29 07:35:06 -07:00
trace_zil.h
Fix build failure with Linux 4.1 and FTRACE
2015-07-29 07:35:06 -07:00
trace_zrlock.h
Fix build failure with Linux 4.1 and FTRACE
2015-07-29 07:35:06 -07:00
trace.h
Remove duplicate typedefs from trace.h
2015-01-06 16:53:24 -08:00
txg_impl.h
Illumos #4045 write throttle & i/o scheduler performance work
2013-12-06 09:32:43 -08:00
txg.h
Illumos 4753 - increase number of outstanding async writes when sync task is waiting
2014-09-23 13:50:55 -07:00
u8_textprep_data.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
u8_textprep.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
uberblock_impl.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
uberblock.h
Illumos 5347 - idle pool may run itself out of space
2015-07-14 10:35:21 -07:00
uio_impl.h
Add basic uio support
2011-02-10 09:21:43 -08:00
unique.h
Illumos #3742
2013-11-04 10:55:25 -08:00
uuid.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
vdev_disk.h
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
vdev_file.h
Update all default taskq settings
2015-06-25 08:58:16 -07:00
vdev_impl.h
Disable LBA weighting on files and SSDs
2015-09-01 15:22:07 -07:00
vdev.h
Illumos 5269 - zpool import slow
2015-06-09 13:48:02 -07:00
xvattr.h
Add xvattr support
2011-03-02 11:43:50 -08:00
zap_impl.h
Illumos 5027 - zfs large block support
2015-05-11 12:23:16 -07:00
zap_leaf.h
Illumos 5056 - ZFS deadlock on db_mtx and dn_holds
2015-04-28 16:25:34 -07:00
zap.h
Add zap_prefetch() interface
2015-12-04 09:39:20 -08:00
zfeature.h
Illumos 4370, 4371
2014-07-28 14:29:58 -07:00
zfs_acl.h
Illumos #3742
2013-11-04 10:55:25 -08:00
zfs_context.h
Illumos 4891 - want zdb option to dump all metadata
2016-01-11 11:36:54 -08:00
zfs_ctldir.h
Use spa as key besides objsetid for snapentry
2015-12-08 16:38:56 -08:00
zfs_debug.h
Add dbgmsg kstat
2015-09-04 16:08:14 -07:00
zfs_delay.h
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zfs_dir.h
Prototype/structure update for Linux
2011-02-10 09:27:21 -08:00
zfs_fuid.h
Prototype/structure update for Linux
2011-02-10 09:27:21 -08:00
zfs_ioctl.h
Illumos 5746 - more checksumming in zfs send
2015-12-30 14:24:14 -08:00
zfs_onexit.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
zfs_rlock.h
Illumos #3742
2013-11-04 10:55:25 -08:00
zfs_sa.h
Illumos 5027 - zfs large block support
2015-05-11 12:23:16 -07:00
zfs_stat.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
zfs_vfsops.h
Honor xattr=sa dataset property
2015-09-19 14:04:14 -07:00
zfs_vnops.h
Add zfs_iput_async() interface
2014-08-11 16:11:43 -07:00
zfs_znode.h
Illumos 5008 - lock contention (rrw_exit) while running a read only load
2015-07-06 09:34:13 -07:00
zil_impl.h
Illumos 5027 - zfs large block support
2015-05-11 12:23:16 -07:00
zil.h
Illumos 5269 - zpool import slow
2015-06-09 13:48:02 -07:00
zio_checksum.h
Illumos 5960, 5925
2016-01-08 15:08:19 -08:00
zio_compress.h
Illumos #3742
2013-11-04 10:55:25 -08:00
zio_impl.h
Illumos #3836
2013-11-05 12:14:56 -08:00
zio_priority.h
Illumos 5960, 5925
2016-01-08 15:08:19 -08:00
zio.h
Illumos 5960, 5925
2016-01-08 15:08:19 -08:00
zpl.h
Add temporary mount options
2015-09-03 14:14:55 -07:00
zrlock.h
Support custom build directories and move includes
2010-09-08 12:38:56 -07:00
zvol.h
Check large block feature flag on volumes
2015-08-28 09:25:03 -07:00