Tom Caputi a8b2e30685 Support re-prioritizing asynchronous prefetches ...

When sequential scrubs were merged, all calls to arc_read()
(including prefetch IOs) were given ZIO_PRIORITY_ASYNC_READ.
Unfortunately, this behaves badly with an existing issue where
prefetch IOs cannot be re-prioritized after the issue. The
result is that synchronous reads end up in the same vdev_queue
as the scrub IOs and can have (in some workloads) multiple
seconds of latency.

This patch incorporates 2 changes. The first ensures that all
scrub IOs are given ZIO_PRIORITY_SCRUB to allow the vdev_queue
code to differentiate between these I/Os and user prefetches.
Second, this patch introduces zio_change_priority() to provide
the missing capability to upgrade a zio's priority.

Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #6921 
Closes #6926

2017-12-21 09:13:06 -08:00

..

abd.c

Update for cppcheck v1.80

2017-11-18 14:08:00 -08:00

arc.c

Support re-prioritizing asynchronous prefetches

2017-12-21 09:13:06 -08:00

blkptr.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

bplist.c

Change KM_PUSHPAGE -> KM_SLEEP

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

bpobj.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

bptree.c

Native Encryption for ZFS on Linux

2017-08-14 10:36:48 -07:00

bqueue.c

Call cv_signal() with mutex held

2017-06-26 14:36:49 -07:00

dbuf_stats.c

Improved dnode allocation and dmu_hold_impl()

2017-09-05 16:15:04 -07:00

dbuf.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

ddt_zap.c

Change KM_PUSHPAGE -> KM_SLEEP

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

ddt.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

dmu_diff.c

OpenZFS 6950 - ARC should cache compressed data

2016-09-13 09:58:33 -07:00

dmu_object.c

Improved dnode allocation and dmu_hold_impl()

2017-09-05 16:15:04 -07:00

dmu_objset.c

Long hold the dataset during upgrade

2017-11-10 13:37:10 -08:00

dmu_send.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dmu_traverse.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

dmu_tx.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dmu_zfetch.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dmu.c

OpenZFS 8585 - improve batching done in zil_commit()

2017-12-05 09:39:16 -08:00

dnode_sync.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dnode.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dsl_bookmark.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dsl_crypt.c

Fix encryption root hierarchy issue

2017-11-08 15:25:30 -08:00

dsl_dataset.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dsl_deadlist.c

OpenZFS 5428 - provide fts(), reallocarray(), and strtonum()

2017-07-08 20:35:35 -07:00

dsl_deleg.c

Performance optimization of AVL tree comparator functions

2016-08-31 14:35:34 -07:00

dsl_destroy.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

dsl_dir.c

Native Encryption for ZFS on Linux

2017-08-14 10:36:48 -07:00

dsl_pool.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

dsl_prop.c

Native Encryption for ZFS on Linux

2017-08-14 10:36:48 -07:00

dsl_scan.c

Support re-prioritizing asynchronous prefetches

2017-12-21 09:13:06 -08:00

dsl_synctask.c

Illumos 4951 - ZFS administrative commands should use reserved space

2015-05-04 09:41:10 -07:00

dsl_userhold.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

edonr_zfs.c

DLPX-44812 integrate EP-220 large memory scalability

2016-11-29 14:34:27 -08:00

fm.c

Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT

2017-11-28 17:33:48 -06:00

gzip.c

GZIP compression offloading with QAT accelerator

2017-03-22 17:58:47 -07:00

hkdf.c

Encryption patch follow-up

2017-10-11 16:54:48 -04:00

lz4.c

Fix LZ4_uncompress_unknownOutputSize caused panic

2017-05-19 13:45:46 -07:00

lzjb.c

Change KM_PUSHPAGE -> KM_SLEEP

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

Makefile.in

Suppress incorrect objtool warnings

2017-12-07 10:28:50 -08:00

metaslab.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

mmp.c

Reimplement vdev_random_leaf and rename it

2017-09-22 14:29:26 -07:00

multilist.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

pathname.c

Add pn_alloc()/pn_free() functions

2016-04-21 09:49:25 -07:00

policy.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

qat_compress.c

Bug fix in qat_compress.c when compressed size is < 4KB

2017-11-07 14:51:30 -08:00

qat_compress.h

GZIP compression offloading with QAT accelerator

2017-03-22 17:58:47 -07:00

range_tree.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

refcount.c

Linux 4.11 compat: avoid refcount_t name conflict

2017-02-28 16:10:18 -08:00

rrwlock.c

Fix spelling

2017-01-03 11:31:18 -06:00

sa.c

Fix coverity defects: CID 147474

2017-10-10 16:41:47 -07:00

sha256.c

DLPX-44812 integrate EP-220 large memory scalability

2016-11-29 14:34:27 -08:00

skein_zfs.c

DLPX-44812 integrate EP-220 large memory scalability

2016-11-29 14:34:27 -08:00

spa_boot.c

Add linux kernel module support

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

spa_config.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

spa_errlog.c

Native Encryption for ZFS on Linux

2017-08-14 10:36:48 -07:00

spa_history.c

Emit history events for 'zpool create'

2017-10-23 09:45:59 -07:00

spa_misc.c

Unbreak the scan status ABI

2017-11-30 09:40:13 -08:00

spa_stats.c

Update the default for zfs_txg_history

2017-09-29 15:58:52 -07:00

spa.c

Fix multihost stale cache file import

2017-12-18 10:28:27 -08:00

space_map.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

space_reftree.c

OpenZFS 6328 - Fix cstyle errors in zfs codebase

2017-01-12 09:42:11 -08:00

trace.c

OpenZFS 6531 - Provide mechanism to artificially limit disk performance

2016-05-26 10:11:51 -07:00

txg.c

OpenZFS 8585 - improve batching done in zil_commit()

2017-12-05 09:39:16 -08:00

uberblock.c

Multi-modifier protection (MMP)

2017-07-13 13:54:00 -04:00

unique.c

Performance optimization of AVL tree comparator functions

2016-08-31 14:35:34 -07:00

vdev_cache.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

vdev_disk.c

Fix printk() calls missing log level

2017-09-25 10:38:27 -07:00

vdev_file.c

Skip spurious resilver IO on raidz vdev

2017-05-12 17:28:03 -07:00

vdev_label.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

vdev_mirror.c

Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT

2017-11-28 17:33:48 -06:00

vdev_missing.c

Skip spurious resilver IO on raidz vdev

2017-05-12 17:28:03 -07:00

vdev_queue.c

Support re-prioritizing asynchronous prefetches

2017-12-21 09:13:06 -08:00

vdev_raidz_math_aarch64_neon_common.h

ABD raidz NEON support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_aarch64_neon.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz_math_aarch64_neonx2.c

ABD raidz NEON support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_avx2.c

ABD raidz avx512f support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_avx512bw.c

ABD: Adapt avx512bw raidz assembly

2016-12-15 17:31:33 -08:00

vdev_raidz_math_avx512f.c

Use cstyle -cpP in make cstyle check

2016-12-12 10:46:26 -08:00

vdev_raidz_math_impl.h

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz_math_scalar.c

ABD Vectorized raidz

2016-11-29 14:34:33 -08:00

vdev_raidz_math_sse2.c

ABD raidz avx512f support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_ssse3.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz_math.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz.c

Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT

2017-11-28 17:33:48 -06:00

vdev_root.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

vdev.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

zap_leaf.c

Use SET_ERROR for constant non-zero return codes

2017-08-02 21:16:12 -07:00

zap_micro.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

zap.c

Sequential scrub and resilvers

2017-11-15 17:27:01 -08:00

zfeature.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

zfs_acl.c

Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT

2017-11-28 17:33:48 -06:00

zfs_byteswap.c

Add linux kernel module support

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

zfs_ctldir.c

Use SET_ERROR for constant non-zero return codes

2017-08-02 21:16:12 -07:00

zfs_debug.c

Add line info and SET_ERROR() to ZFS debug log

2017-07-25 23:09:48 -07:00

zfs_dir.c

Fix NFS sticky bit permission denied error

2017-12-04 11:55:57 -08:00

zfs_fm.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

zfs_fuid.c

Rename zfs_sb_t -> zfsvfs_t

2017-03-10 09:51:33 -08:00

zfs_ioctl.c

Long hold the dataset during upgrade

2017-11-10 13:37:10 -08:00

zfs_log.c

OpenZFS 7578 - Fix/improve some aspects of ZIL writing

2017-06-09 09:15:37 -07:00

zfs_onexit.c

zfsdev_getminor() should check for invalid file handles

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

zfs_ratelimit.c

Add libtpool (thread pools)

2017-08-09 15:31:08 -07:00

zfs_replay.c

OpenZFS 8081 - Compiler warnings in zdb

2017-10-27 12:46:35 -07:00

zfs_rlock.c

Fix spelling

2017-01-03 11:31:18 -06:00

zfs_sa.c

Modifying XATTRs doesnt change the ctime

2017-09-13 12:20:07 -07:00

zfs_vfsops.c

Fix 'zfs get {user|group}objused@' functionality

2017-11-29 11:59:22 -08:00

zfs_vnops.c

OpenZFS 8585 - improve batching done in zil_commit()

2017-12-05 09:39:16 -08:00

zfs_znode.c

misc: fix meaningless values

2017-09-19 12:19:08 -07:00

zil.c

OpenZFS 8603 - rename zilog's "zl_writer_lock" to "zl_issuer_lock"

2017-12-06 11:38:10 -08:00

zio_checksum.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

zio_compress.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

zio_crypt.c

Fix for #6714

2017-10-11 16:59:42 -04:00

zio_inject.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

zio.c

Support re-prioritizing asynchronous prefetches

2017-12-21 09:13:06 -08:00

zle.c

Update core ZFS code from build 121 to build 141.

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

zpl_ctldir.c

Linux 4.12 compat: CURRENT_TIME removed

2017-05-10 09:30:48 -07:00

zpl_export.c

Use cstyle -cpP in make cstyle check

2016-12-12 10:46:26 -08:00

zpl_file.c

misc: fix meaningless values

2017-09-19 12:19:08 -07:00

zpl_inode.c

Linux 4.12 compat: CURRENT_TIME removed

2017-05-10 09:30:48 -07:00

zpl_super.c

Restructure mount option handling

2017-03-10 09:51:41 -08:00

zpl_xattr.c

Update for cppcheck v1.80

2017-11-18 14:08:00 -08:00

zrlock.c

Undo c89 workarounds to match with upstream

2017-11-04 13:25:13 -07:00

zvol.c

OpenZFS 8585 - improve batching done in zil_commit()

2017-12-05 09:39:16 -08:00