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Steven Hartland 95fd54a1c5 Illumos #3740 
3740 Poor ZFS send / receive performance due to snapshot
     hold / release processing
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Christopher Siden <christopher.siden@delphix.com>

References:
  https://www.illumos.org/issues/3740
  illumos/illumos-gate@a7a845e4bf

Ported-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1775

Porting notes:

1. 13fe019870 introduced a merge conflict
   in dsl_dataset_user_release_tmp where some variables were moved
   outside of the preprocessor directive.

2. dea9dfefdd747534b3846845629d2200f0616dad made the previous merge
   conflict worse by switching KM_SLEEP to KM_PUSHPAGE. This is notable
   because this commit refactors the code, adding a new KM_SLEEP
   allocation. It is not clear to me whether this should be converted
   to KM_PUSHPAGE.

3. We had a merge conflict in libzfs_sendrecv.c because of copyright
   notices.

4. Several small C99 compatibility fixed were made.
2013-11-04 11:17:48 -08:00
..
fm 3246 ZFS I/O deadman thread 2013-05-01 17:05:52 -07:00
fs Illumos #3588 2013-10-31 10:16:11 -07:00
arc.h Add visibility in to cached dbufs 2013-10-25 13:59:40 -07:00
avl_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
avl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
bplist.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
bpobj.h Illumos #3104: eliminate empty bpobjs 2013-01-08 10:35:43 -08:00
bptree.h Illumos #2619 and #2747 2013-01-08 10:35:35 -08:00
dbuf.h Add visibility in to cached dbufs 2013-10-25 13:59:40 -07:00
ddt.h Illumos #3742 2013-11-04 10:55:25 -08:00
dmu_impl.h Illumos #2703: add mechanism to report ZFS send progress 2012-09-19 13:39:06 -07:00
dmu_objset.h Illumos #3464 2013-09-04 16:01:24 -07:00
dmu_send.h Illumos #3464 2013-09-04 16:01:24 -07:00
dmu_traverse.h Illumos #3498 panic in arc_read() 2013-07-02 13:34:31 -07:00
dmu_tx.h Illumos #3464 2013-09-04 16:01:24 -07:00
dmu_zfetch.h Add missing ZFS tunables 2011-05-04 10:02:37 -07:00
dmu.h Illumos #3741 2013-11-04 10:55:25 -08:00
dnode.h Illumos #3742 2013-11-04 10:55:25 -08:00
dsl_dataset.h Illumos #3740 2013-11-04 11:17:48 -08:00
dsl_deadlist.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
dsl_deleg.h Illumos #2882, #2883, #2900 2013-09-04 15:49:00 -07:00
dsl_destroy.h Illumos #3464 2013-09-04 16:01:24 -07:00
dsl_dir.h Illumos #3464 2013-09-04 16:01:24 -07:00
dsl_pool.h Illumos #3742 2013-11-04 10:55:25 -08:00
dsl_prop.h Illumos #3464 2013-09-04 16:01:24 -07:00
dsl_scan.h Illumos #3642, #3643 2013-11-01 08:55:12 -07:00
dsl_synctask.h Illumos #3464 2013-09-04 16:01:24 -07:00
dsl_userhold.h Illumos #3740 2013-11-04 11:17:48 -08:00
efi_partition.h Move partition scanning from userspace to module. 2012-07-17 09:17:31 -07:00
Makefile.am Illumos #3464 2013-09-04 16:01:24 -07:00
metaslab_impl.h Illumos #3552, #3564 2013-06-19 16:22:39 -07:00
metaslab.h Illumos #3464 2013-09-04 16:01:24 -07:00
nvpair_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
nvpair.h Illumos #3464 2013-09-04 16:01:24 -07:00
refcount.h Illumos #3464 2013-09-04 16:01:24 -07:00
rrwlock.h Illumos #3464 2013-09-04 16:01:24 -07:00
sa_impl.h Illumos #3742 2013-11-04 10:55:25 -08:00
sa.h Add sa_spill_rele() interface 2012-03-07 16:28:00 -08:00
spa_boot.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
spa_impl.h Illumos #3742 2013-11-04 10:55:25 -08:00
spa.h Illumos #3537 2013-10-31 09:16:03 -07:00
space_map.h Illumos #3742 2013-11-04 10:55:25 -08:00
txg_impl.h Illumos #3582, #3584 2013-11-04 10:55:25 -08:00
txg.h Illumos #3582, #3584 2013-11-04 10:55:25 -08:00
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 Support custom build directories and move includes 2010-09-08 12:38:56 -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 Linux 2.6.x compat, blkdev_compat.h 2011-02-23 12:29:38 -08:00
vdev_file.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
vdev_impl.h Illumos #3742 2013-11-04 10:55:25 -08:00
vdev.h 3246 ZFS I/O deadman thread 2013-05-01 17:05:52 -07:00
xvattr.h Add xvattr support 2011-03-02 11:43:50 -08:00
zap_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zap_leaf.h Illumos #3742 2013-11-04 10:55:25 -08:00
zap.h Illumos #3742 2013-11-04 10:55:25 -08:00
zfeature.h Illumos #3464 2013-09-04 16:01:24 -07:00
zfs_acl.h Illumos #3742 2013-11-04 10:55:25 -08:00
zfs_context.h Illumos #3582, #3584 2013-11-04 10:55:25 -08:00
zfs_ctldir.h Linux 3.7 compat, schedule_delayed_work() 2012-12-12 10:47:05 -08:00
zfs_debug.h Add missing code to zfs_debug.{c,h} 2013-10-29 15:06:18 -07:00
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 #3744 2013-11-04 10:55:25 -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 Implement SA based xattrs 2011-11-28 15:45:51 -08:00
zfs_stat.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_vfsops.h Posix ACL Support 2013-10-29 14:54:26 -07:00
zfs_vnops.h Linux 3.11 compat: fops->iterate() 2013-08-15 16:19:07 -07:00
zfs_znode.h Illumos #3742 2013-11-04 10:55:25 -08:00
zil_impl.h Illumos #3086: unnecessarily setting DS_FLAG_INCONSISTENT on async 2013-01-08 10:35:43 -08:00
zil.h Illumos #3742 2013-11-04 10:55:25 -08:00
zio_checksum.h Constify structures containing function pointers 2013-03-04 08:49:32 -08:00
zio_compress.h Illumos #3742 2013-11-04 10:55:25 -08:00
zio_impl.h Illumos #3329, #3330, #3331, #3335 2013-05-06 12:39:34 -07:00
zio.h Add visibility in to arc_read 2013-10-25 13:57:25 -07:00
zpl.h Posix ACL Support 2013-10-29 14:54:26 -07:00
zrlock.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zvol.h Illumos #3464 2013-09-04 16:01:24 -07:00