Brian Behlendorf 57f5a2008e Fix txg_quiesce thread deadlock ...

A deadlock was accidentally introduced by commit e95853a which
can occur when the system is under memory pressure.  What happens
is that while the txg_quiesce thread is holding the tx->tx_cpu
locks it enters memory reclaim.  In the context of this memory
reclaim it then issues synchronous I/O to a ZVOL swap device.
Because the txg_quiesce thread is holding the tx->tx_cpu locks
a new txg cannot be opened to handle the I/O.  Deadlock.

The fix is straight forward.  Move the memory allocation outside
the critical region where the tx->tx_cpu locks are held.  And for
good measure change the offending allocation to KM_PUSHPAGE to
ensure it never attempts to issue I/O during reclaim.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1274

2013-04-26 14:42:36 -07:00

..

arc.c

Constify structures containing function pointers

2013-03-04 08:49:32 -08:00

bplist.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

bpobj.c

Illumos #3104: eliminate empty bpobjs

2013-01-08 10:35:43 -08:00

bptree.c

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

dbuf.c

Illumos #3145, #3212

2013-01-08 10:35:44 -08:00

ddt_zap.c

Add ddt_object_count() error handling

2012-10-29 08:57:45 -07:00

ddt.c

Add zio_ddt_free()+ddt_phys_decref() error handling

2013-03-19 13:01:01 -07:00

dmu_diff.c

Update to onnv_147

2010-08-26 14:24:34 -07:00

dmu_object.c

Add linux kernel module support

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

dmu_objset.c

Switch KM_SLEEP to KM_PUSHPAGE

2013-02-06 11:19:58 -08:00

dmu_send.c

Cast 'zfs bad bloc' to ULL for x86

2013-02-04 16:39:08 -08:00

dmu_traverse.c

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

dmu_tx.c

Illumos #3422, #3425

2013-04-12 09:01:36 -07:00

dmu_zfetch.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

dmu.c

Illumos #3086: unnecessarily setting DS_FLAG_INCONSISTENT on async

2013-01-08 10:35:43 -08:00

dnode_sync.c

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

dnode.c

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

dsl_dataset.c

Use dsl_dataset_snap_lookup()

2013-01-25 15:07:40 -08:00

dsl_deadlist.c

Illumos #3104: eliminate empty bpobjs

2013-01-08 10:35:43 -08:00

dsl_deleg.c

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

dsl_dir.c

Switch KM_SLEEP to KM_PUSHPAGE

2013-02-06 11:19:58 -08:00

dsl_pool.c

Fix txg_quiesce thread deadlock

2013-04-26 14:42:36 -07:00

dsl_prop.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-09-17 11:22:23 -07:00

dsl_scan.c

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

dsl_synctask.c

Add linux kernel module support

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

fm.c

Condition variable usage, zevent_cv

2012-10-15 16:01:54 -07:00

gzip.c

Fix zmod.h usage in userspace

2010-08-31 08:38:46 -07:00

lz4.c

Linux 3.9 compat: Undefine GCC_VERSION

2013-03-06 15:48:48 -08:00

lzjb.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

Makefile.in

Illumos #3035 LZ4 compression support in ZFS and GRUB

2013-01-29 09:28:20 -08:00

metaslab.c

Add metaslab_debug option

2013-03-18 16:47:43 -07:00

refcount.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

rrwlock.c

Enable rrwlock.c compilation

2010-12-07 16:05:25 -08:00

sa.c

Constify structures containing function pointers

2013-03-04 08:49:32 -08:00

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

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

spa_errlog.c

Add linux kernel module support

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

spa_history.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

spa_misc.c

Illumos #3090 and #3102

2013-01-08 10:35:42 -08:00

spa.c

Make spa.c assertions catch unsupported pre-feature flag pool versions

2013-02-12 10:27:44 -08:00

space_map.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

txg.c

Fix txg_quiesce thread deadlock

2013-04-26 14:42:36 -07:00

uberblock.c

Update core ZFS code from build 121 to build 141.

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

unique.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

vdev_cache.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-08-27 12:01:37 -07:00

vdev_disk.c

build: resolve orthographic and other grammatical errors

2013-04-02 10:44:52 -07:00

vdev_file.c

Illumos #1948: zpool list should show more detailed pool info

2012-09-19 13:39:05 -07:00

vdev_label.c

Illumos #3090 and #3102

2013-01-08 10:35:42 -08:00

vdev_mirror.c

Illumos #1948: zpool list should show more detailed pool info

2012-09-19 13:39:05 -07:00

vdev_missing.c

Illumos #1948: zpool list should show more detailed pool info

2012-09-19 13:39:05 -07:00

vdev_queue.c

Limit zfs_vdev_aggregation_limit to SPA_MAXBLOCKSIZE

2012-10-15 09:28:43 -07:00

vdev_raidz.c

Illumos #1948: zpool list should show more detailed pool info

2012-09-19 13:39:05 -07:00

vdev_root.c

Illumos #1948: zpool list should show more detailed pool info

2012-09-19 13:39:05 -07:00

vdev.c

Allow setting a lower ashift with -o ashift

2013-04-12 10:50:46 -07:00

zap_leaf.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-09-05 08:44:58 -07:00

zap_micro.c

Illumos #2619 and #2747

2013-01-08 10:35:35 -08:00

zap.c

fzap_cursor_move_to_key() should drop l_rwlock

2013-01-23 16:31:16 -08:00

zfeature_common.c

Illumos #3035 LZ4 compression support in ZFS and GRUB

2013-01-29 09:28:20 -08:00

zfeature.c

Illumos #3104: eliminate empty bpobjs

2013-01-08 10:35:43 -08:00

zfs_acl.c

Avoid gcc -Werror=maybe-uninitialized warnings

2013-01-28 09:10:29 -08:00

zfs_byteswap.c

Add linux kernel module support

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

zfs_ctldir.c

Use dsl_dataset_snap_lookup()

2013-01-25 15:07:40 -08:00

zfs_debug.c

Use spl_debug_* helpers

2012-02-09 16:37:48 -08:00

zfs_dir.c

Trivial spelling fix

2013-04-19 15:43:16 -07:00

zfs_fm.c

Illumos #2671: zpool import should not fail if vdev ashift has increased

2012-11-15 11:05:59 -08:00

zfs_fuid.c

Drop HAVE_XVATTR macros

2011-03-02 11:44:34 -08:00

zfs_ioctl.c

Add snapdev=[hidden|visible] dataset property

2013-03-05 12:37:54 -08:00

zfs_log.c

Revert "Remove TSD zfs_fsyncer_key"

2012-12-20 09:56:28 -08:00

zfs_onexit.c

Add linux kernel device support

2010-08-31 13:41:50 -07:00

zfs_replay.c

Constify structures containing function pointers

2013-03-04 08:49:32 -08:00

zfs_rlock.c

Switch KM_SLEEP to KM_PUSHPAGE

2012-12-10 09:44:45 -08:00

zfs_sa.c

Revert "Use SA_HDL_PRIVATE for SA xattrs"

2012-08-25 09:25:56 -07:00

zfs_vfsops.c

Use sb->s_d_op default dentry operations

2013-01-18 15:04:23 -08:00

zfs_vnops.c

Revert "Remove TSD zfs_fsyncer_key"

2012-12-20 09:56:28 -08:00

zfs_znode.c

Fix 'zfs rollback' on mounted file systems

2013-01-17 09:51:20 -08:00

zil.c

Constify structures containing function pointers

2013-03-04 08:49:32 -08:00

zio_checksum.c

Update core ZFS code from build 121 to build 141.

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

zio_compress.c

Illumos #3035 LZ4 compression support in ZFS and GRUB

2013-01-29 09:28:20 -08:00

zio_inject.c

Add missing ZFS tunables

2011-05-04 10:02:37 -07:00

zio.c

Add zio_ddt_free()+ddt_phys_decref() error handling

2013-03-19 13:01:01 -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

Add d_clear_d_op() compatibility

2013-01-23 16:33:29 -08:00

zpl_export.c

Implement .commit_metadata hook for NFS export

2012-10-03 10:49:45 -07:00

zpl_file.c

Remove .readdir from zpl_file_operations table

2013-04-19 15:36:47 -07:00

zpl_inode.c

Add explicit MAXNAMELEN check

2013-02-12 10:27:39 -08:00

zpl_super.c

Update SAs when an inode is dirtied

2012-12-14 12:18:54 -08:00

zpl_xattr.c

Correctly return ERANGE in getxattr(2)

2013-04-24 12:35:04 -07:00

zrlock.c

Export ZFS symbols needed by Lustre.

2010-09-17 16:24:15 -07:00

zvol.c

Add snapdev=[hidden|visible] dataset property

2013-03-05 12:37:54 -08:00