Brian Behlendorf ef5b2e1048 Avoid blocking in arc_reclaim_thread() ...

As described in the comment above arc_reclaim_thread() it's critical
that the reclaim thread be careful about blocking.  Just like it must
never wait on a hash lock, it must never wait on a task which can in
turn wait on the CV in arc_get_data_buf().  This will deadlock, see
issue #3822 for full backtraces showing the problem.

To resolve this issue arc_kmem_reap_now() has been updated to use the
asynchronous arc prune function.  This means that arc_prune_async()
may now be called while there are still outstanding arc_prune_tasks.
However, this isn't a problem because arc_prune_async() already
keeps a reference count preventing multiple outstanding tasks per
registered consumer.  Functionally, this behavior is the same as
the counterpart illumos function dnlc_reduce_cache().

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Issue #3808
Issue #3834
Issue #3822

2015-09-25 12:45:47 -07:00

..

arc.c

Avoid blocking in arc_reclaim_thread()

2015-09-25 12:45:47 -07:00

blkptr.c

Illumos 4757, 4913

2014-08-01 14:28:05 -07:00

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

Dbuf hash table should be sized as is the arc hash table

2015-09-02 09:33:02 -07:00

ddt_zap.c

Change KM_PUSHPAGE -> KM_SLEEP

2015-01-16 14:41:26 -08:00

ddt.c

Handle zap_lookup() failure in ddt_object_load()

2015-08-19 14:32:50 -07:00

dmu_diff.c

Illumos 5369 - arc flags should be an enum

2015-06-11 10:27:25 -07:00

dmu_object.c

Illumos 3693 - restore_object uses at least two transactions to restore an object

2014-10-21 15:26:50 -07:00

dmu_objset.c

Align thread priority with Linux defaults

2015-07-28 13:36:47 -07:00

dmu_send.c

Illumos 5946, 5945

2015-07-06 09:31:30 -07:00

dmu_traverse.c

Prevent reclaim in the traverse prefetch thread

2015-09-04 08:43:28 -07:00

dmu_tx.c

Illumos 5911 - ZFS "hangs" while deleting file

2015-07-06 09:31:42 -07:00

dmu_zfetch.c

Change KM_PUSHPAGE -> KM_SLEEP

2015-01-16 14:41:26 -08:00

dmu.c

zvol processing should use struct bio

2015-09-04 15:30:24 -04:00

dnode_sync.c

Illumos 5911 - ZFS "hangs" while deleting file

2015-07-06 09:31:42 -07:00

dnode.c

Illumos 5911 - ZFS "hangs" while deleting file

2015-07-06 09:31:42 -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

Allow recovery from corrupted snapshot maps

2015-08-28 11:56:32 -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

Align thread priority with Linux defaults

2015-07-28 13:36:47 -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 5347 - idle pool may run itself out of space

2015-07-14 10:35:21 -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

zfsdev_getminor() should check for invalid file handles

2015-06-22 17:02:13 -07:00

gzip.c

cstyle: Resolve C style issues

2013-12-18 16:46:35 -08:00

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

Support parallel build trees (VPATH builds)

2015-07-17 13:42:51 -07:00

metaslab.c

Disable LBA weighting on files and SSDs

2015-09-01 15:22:07 -07:00

multilist.c

Illumos 5497 - lock contention on arcs_mtx

2015-06-11 10:27:25 -07:00

range_tree.c

Illumos 5163 - arc should reap range_seg_cache

2015-06-25 08:58:16 -07:00

refcount.c

Change KM_PUSHPAGE -> KM_SLEEP

2015-01-16 14:41:26 -08:00

rrwlock.c

Illumos 5008 - lock contention (rrw_exit) while running a read only load

2015-07-06 09:34:13 -07:00

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

Add linux sha2 support

2010-08-31 13:41:59 -07:00

spa_boot.c

Add linux kernel module support

2010-08-31 13:41:58 -07:00

spa_config.c

Linux 4.2 compat: vfs_rename()

2015-08-19 16:04:33 -07:00

spa_errlog.c

Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t

2014-08-06 14:48:41 -07:00

spa_history.c

Illumos 5027 - zfs large block support

2015-05-11 12:23:16 -07:00

spa_misc.c

Add spa_slop_shift module option

2015-09-02 09:30:18 -07:00

spa_stats.c

Illumos 5369 - arc flags should be an enum

2015-06-11 10:27:25 -07:00

spa.c

Align thread priority with Linux defaults

2015-07-28 13:36:47 -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

Align thread priority with Linux defaults

2015-07-28 13:36:47 -07:00

uberblock.c

Illumos 5347 - idle pool may run itself out of space

2015-07-14 10:35:21 -07:00

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

Linux 4.3 compat: bio_end_io_t / BIO_UPTODATE

2015-09-25 12:44:54 -07:00

vdev_file.c

Disable LBA weighting on files and SSDs

2015-09-01 15:22:07 -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

Fix small typo

2015-08-30 10:10:16 -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

Illumos #3598

2013-10-31 14:58:04 -07:00

vdev.c

Disable LBA weighting on files and SSDs

2015-09-01 15:22:07 -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

Add parenthesis to the ternary operator

2015-08-19 11:28:41 -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

Add linux kernel module support

2010-08-31 13:41:58 -07:00

zfs_ctldir.c

Allow NFS activity to defer snapshot unmounts

2015-09-25 12:45:38 -07:00

zfs_debug.c

Add dbgmsg kstat

2015-09-04 16:08:14 -07:00

zfs_dir.c

Revert "Revert "Revert "Fix unlink/xattr deadlock"""

2014-08-11 16:12:36 -07:00

zfs_fm.c

Change KM_PUSHPAGE -> KM_SLEEP

2015-01-16 14:41:26 -08:00

zfs_fuid.c

Illumos #3522

2013-10-30 14:51:27 -07:00

zfs_ioctl.c

Add dbgmsg kstat

2015-09-04 16:08:14 -07:00

zfs_log.c

Illumos 5027 - zfs large block support

2015-05-11 12:23:16 -07:00

zfs_onexit.c

zfsdev_getminor() should check for invalid file handles

2015-06-22 17:02:13 -07:00

zfs_replay.c

Linux AIO Support

2014-09-05 15:11:43 -07:00

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

Support accessing .zfs/snapshot via NFS

2015-09-04 13:23:53 -07:00

zfs_vnops.c

Fix invalid fileid for snapshot root dentry

2015-09-04 13:23:06 -07:00

zfs_znode.c

Linux 3.18 compat: Snapshot auto-mounting

2015-08-31 13:54:39 -07:00

zil.c

Align thread priority with Linux defaults

2015-07-28 13:36:47 -07:00

zio_checksum.c

Illumos 4757, 4913

2014-08-01 14:28:05 -07:00

zio_compress.c

Illumos 5661 - ZFS: "compression = on" should use lz4 if feature is enabled

2015-07-10 12:11:45 -07:00

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

Update core ZFS code from build 121 to build 141.

2010-05-28 13:45:14 -07:00

zpl_ctldir.c

Linux 3.18 compat: Snapshot auto-mounting

2015-08-31 13:54:39 -07:00

zpl_export.c

zfsctl: No need to sync ctldir inodes

2015-08-31 13:54:39 -07:00

zpl_file.c

Linux 4.1 compat: loop device on ZFS

2015-08-24 10:17:06 -07:00

zpl_inode.c

Linux 3.18 compat: Snapshot auto-mounting

2015-08-31 13:54:39 -07:00

zpl_super.c

Disable zpl_nr_cached_objects() callback

2015-09-25 12:45:42 -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

Linux 4.3 compat: bio_end_io_t / BIO_UPTODATE

2015-09-25 12:44:54 -07:00