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f604673836
mirror_zfs/module/zfs
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Brian Behlendorf f604673836 Make arc_prune() asynchronous 
As described in the comment above arc_adapt_thread() it is critical
that the arc_adapt_thread() function never sleep while holding a hash
lock.  This behavior was possible in the Linux implementation because
the arc_prune() logic was implemented to be synchronous.  Under
illumos the analogous dnlc_reduce_cache() function is asynchronous.

To address this the arc_do_user_prune() function is has been reworked
in to two new functions as follows:

* arc_prune_async() is an asynchronous implementation which dispatches
the prune callback to be run by the system taskq.  This makes it
suitable to use in the context of the arc_adapt_thread().

* arc_prune() is a synchronous implementation which depends on the
arc_prune_async() implementation but blocks until the outstanding
callbacks complete.  This is used in arc_kmem_reap_now() where it
is safe, and expected, that memory will be freed.

This patch additionally adds the zfs_arc_meta_strategy module option
while allows the meta reclaim strategy to be configured.  It defaults
to a balanced strategy which has been proved to work well under Linux
but the illumos meta-only strategy can be enabled.

Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2015-06-11 10:27:25 -07:00
..
arc.c Make arc_prune() asynchronous 2015-06-11 10:27:25 -07:00
blkptr.c
bplist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
bpobj.c Illumos 5810 - zdb should print details of bpobj 2015-05-11 15:10:24 -07:00
bptree.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
dbuf_stats.c Illumos 5497 - lock contention on arcs_mtx 2015-06-11 10:27:25 -07:00
dbuf.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
ddt_zap.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
ddt.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dmu_diff.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
dmu_object.c
dmu_objset.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
dmu_send.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
dmu_traverse.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
dmu_tx.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
dmu_zfetch.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dmu.c Illumos 5820 - verify failed in zio_done(): BP_EQUAL(bp, io_bp_orig) 2015-05-04 10:49:49 -07:00
dnode_sync.c Illumos 5350 - clean up code in dnode_sync() 2015-05-11 15:09:51 -07:00
dnode.c Illumos 5422 - preserve AVL invariants in dn_dbufs 2015-05-11 15:09:29 -07:00
dsl_bookmark.c Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_dataset.c Illumos 5393 - spurious failures from dsl_dataset_hold_obj() 2015-05-13 08:56:04 -07:00
dsl_deadlist.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
dsl_deleg.c Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_destroy.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
dsl_dir.c Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_pool.c Illumos 5497 - lock contention on arcs_mtx 2015-06-11 10:27:25 -07:00
dsl_prop.c Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_scan.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -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 Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
fm.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
gzip.c
lz4.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in Illumos 5497 - lock contention on arcs_mtx 2015-06-11 10:27:25 -07:00
metaslab.c Use taskq_wait_outstanding() function 2015-06-11 10:27:25 -07:00
multilist.c Illumos 5497 - lock contention on arcs_mtx 2015-06-11 10:27:25 -07:00
range_tree.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
refcount.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
rrwlock.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
sa.c Illumos 5562 - ZFS sa_handle's violate kmem invariants, debug kernels panic on boot 2015-05-11 15:10:57 -07:00
sha256.c
spa_boot.c
spa_config.c Use vmem_alloc() in spa_config_write() 2015-04-07 15:10:19 -07:00
spa_errlog.c
spa_history.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
spa_misc.c Illumos 5818 - zfs {ref}compressratio is incorrect with 4k sector size 2015-06-10 16:24:01 -07:00
spa_stats.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
spa.c Illumos 5818 - zfs {ref}compressratio is incorrect with 4k sector size 2015-06-10 16:24:01 -07:00
space_map.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
space_reftree.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
trace.c Illumos 5497 - lock contention on arcs_mtx 2015-06-11 10:27:25 -07:00
txg.c Use taskq_wait_outstanding() function 2015-06-11 10:27:25 -07:00
uberblock.c
unique.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_cache.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_disk.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
vdev_file.c Illumos #5244 - zio pipeline callers should explicitly invoke next stage 2015-04-30 15:07:47 -07:00
vdev_label.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_mirror.c Illumos #5244 - zio pipeline callers should explicitly invoke next stage 2015-04-30 15:07:47 -07:00
vdev_missing.c Illumos #5244 - zio pipeline callers should explicitly invoke next stage 2015-04-30 15:07:47 -07:00
vdev_queue.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
vdev_raidz.c Illumos #5244 - zio pipeline callers should explicitly invoke next stage 2015-04-30 15:07:47 -07:00
vdev_root.c
vdev.c Remove unused variable in vdev_add_child() 2015-06-11 10:22:38 -07:00
zap_leaf.c Illumos 5314 - Remove "dbuf phys" db->db_data pointer aliases in ZFS 2015-04-28 16:25:20 -07:00
zap_micro.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
zap.c Illumos 3654,3656 2015-05-04 09:41:09 -07:00
zfeature_common.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
zfeature.c Use cached feature info in spa_add_feature_stats() 2015-03-05 14:11:10 -08:00
zfs_acl.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_byteswap.c
zfs_ctldir.c
zfs_debug.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_dir.c
zfs_fm.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_fuid.c
zfs_ioctl.c Relax restriction on zfs_ioc_next_obj() iteration 2015-05-14 11:16:08 -07:00
zfs_log.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
zfs_onexit.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_replay.c
zfs_rlock.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_sa.c Illumos 5056 - ZFS deadlock on db_mtx and dn_holds 2015-04-28 16:25:34 -07:00
zfs_vfsops.c Use taskq_wait_outstanding() function 2015-06-11 10:27:25 -07:00
zfs_vnops.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
zfs_znode.c Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
zil.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
zio_checksum.c
zio_compress.c
zio_inject.c Illumos 5497 - lock contention on arcs_mtx 2015-06-11 10:27:25 -07:00
zio.c Illumos 5369 - arc flags should be an enum 2015-06-11 10:27:25 -07:00
zle.c
zpl_ctldir.c Mark additional functions as PF_FSTRANS 2015-04-17 09:35:24 -07:00
zpl_export.c Return -ESTALE to force lookup for missing NFS file handles 2015-05-14 11:16:52 -07:00
zpl_file.c Mark all ZPL and ioctl functions as PF_FSTRANS 2015-04-03 11:38:59 -07:00
zpl_inode.c Safely handle security / ACL failures 2015-05-11 14:35:14 -07:00
zpl_super.c Extend PF_FSTRANS critical regions 2015-04-24 09:54:22 -07:00
zpl_xattr.c Mark additional functions as PF_FSTRANS 2015-04-17 09:35:24 -07:00
zrlock.c Illumos 5812 - assertion failed in zrl_tryenter(): zr_owner==NULL 2015-04-30 14:43:40 -07:00
zvol.c Set the maximum ZVOL transfer size correctly 2015-03-25 11:58:42 -07:00