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mirror_zfs/module/zfs
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Matthew Macy af20b97078 zfetch: Don't issue new streams when old have not completed 
The current dmu_zfetch code implicitly assumes that I/Os complete
within min_sec_reap seconds. With async dmu and a readonly workload
(and thus no exponential backoff in operations from the "write
throttle") such as L2ARC rebuild it is possible to saturate the drives
with I/O requests. These are then effectively compounded with prefetch
requests.

This change reference counts streams and prevents them from being
recycled after their min_sec_reap timeout if they still have
outstanding I/Os.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #10900
2020-09-27 17:08:38 -07:00
..
abd.c
Add gang ABD child to parent gang ABD
2020-07-24 21:09:20 -07:00
aggsum.c
Reduce number of atomic_add() calls in aggsum
2020-02-06 13:21:06 -08:00
arc.c
Restore clearing of L2CACHE flag in arc_read_done()
2020-09-22 16:08:05 -07:00
blkptr.c
Add zstd support to zfs
2020-08-20 10:30:06 -07:00
bplist.c
Fast Clone Deletion
2019-07-26 10:54:14 -07:00
bpobj.c
Rename refcount.h to zfs_refcount.h
2020-07-29 16:35:33 -07:00
bptree.c
Rename refcount.h to zfs_refcount.h
2020-07-29 16:35:33 -07:00
bqueue.c
Implement Redacted Send/Receive
2019-06-19 09:48:12 -07:00
btree.c
Fix typo in btree.c
2020-08-17 15:25:37 -07:00
dataset_kstats.c
Fix panic on DilOS with kstat per dataset statistics
2019-09-03 12:12:31 -07:00
dbuf_stats.c
Mark functions as static
2020-06-18 12:20:38 -07:00
dbuf.c
zfetch: Don't issue new streams when old have not completed
2020-09-27 17:08:38 -07:00
ddt_zap.c
Refactor dnode dirty context from dbuf_dirty
2020-02-26 16:09:17 -08:00
ddt.c
Remove dead code
2020-06-18 12:21:18 -07:00
dmu_diff.c
Mark write_record static
2019-12-03 09:51:44 -08:00
dmu_object.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
dmu_objset.c
Add zstd support to zfs
2020-08-20 10:30:06 -07:00
dmu_recv.c
Add zstd support to zfs
2020-08-20 10:30:06 -07:00
dmu_redact.c
dmu_redact_snap: fix possible memleak
2020-09-15 15:55:45 -07:00
dmu_send.c
Don't set numobjs to UINT64_MAX or near it
2020-09-22 16:16:07 -07:00
dmu_traverse.c
Make module tunables cross platform
2019-09-05 14:49:49 -07:00
dmu_tx.c
Refactor dnode dirty context from dbuf_dirty
2020-02-26 16:09:17 -08:00
dmu_zfetch.c
zfetch: Don't issue new streams when old have not completed
2020-09-27 17:08:38 -07:00
dmu.c
Export dmu_offset_next() symbol
2020-08-25 08:34:41 -07:00
dnode_sync.c
dnode_sync is careless with range tree
2020-08-26 21:48:29 -07:00
dnode.c
Add DB_RF_NOPREFETCH to dbuf_read()s in dnode.c
2020-09-25 13:49:22 -07:00
dsl_bookmark.c
Fix typos
2020-06-09 21:24:09 -07:00
dsl_crypt.c
Prune dead branch reported by Coverity
2020-09-25 13:11:53 -07:00
dsl_dataset.c
Add zstd support to zfs
2020-08-20 10:30:06 -07:00
dsl_deadlist.c
Fix i/o error handling of livelists and zap iteration
2020-08-05 10:22:09 -07:00
dsl_deleg.c
Reduce loaded range tree memory usage
2019-10-09 10:36:03 -07:00
dsl_destroy.c
Fix i/o error handling of livelists and zap iteration
2020-08-05 10:22:09 -07:00
dsl_dir.c
Add 'zfs rename -u' to rename without remounting
2020-09-01 16:14:16 -07:00
dsl_pool.c
Mark functions as static
2020-06-18 12:20:38 -07:00
dsl_prop.c
Replace sprintf()->snprintf() and strcpy()->strlcpy()
2020-06-07 11:42:12 -07:00
dsl_scan.c
Sequential scrub and resilver updated comments
2020-09-04 10:51:51 -07:00
dsl_synctask.c
nowait synctask must succeed
2020-09-04 10:29:39 -07:00
dsl_userhold.c
Replace sprintf()->snprintf() and strcpy()->strlcpy()
2020-06-07 11:42:12 -07:00
edonr_zfs.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
fm.c
Avoid posting duplicate zpool events
2020-09-04 10:34:28 -07:00
gzip.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
hkdf.c
Encryption patch follow-up
2017-10-11 16:54:48 -04:00
lz4.c
Prefix zfs internal endian checks with _ZFS
2020-07-28 13:02:49 -07:00
lzjb.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
Makefile.in
Move spa_stats.c to common code
2020-08-30 14:12:46 -07:00
metaslab.c
Sequential scrub and resilver updated comments
2020-09-04 10:51:51 -07:00
mmp.c
Initialize mmp_last_write when the mmp thread starts
2020-09-09 10:12:54 -07:00
multilist.c
Make use of ZFS_DEBUG consistent within kmod sources
2020-07-25 20:07:44 -07:00
objlist.c
Implement Redacted Send/Receive
2019-06-19 09:48:12 -07:00
pathname.c
Disable unused pathname::pn_path* (unneeded in Linux)
2019-07-15 13:57:56 -07:00
range_tree.c
Sequential scrub and resilver updated comments
2020-09-04 10:51:51 -07:00
refcount.c
Rename refcount.h to zfs_refcount.h
2020-07-29 16:35:33 -07:00
rrwlock.c
Rename refcount.h to zfs_refcount.h
2020-07-29 16:35:33 -07:00
sa.c
Remove duplicate dnode.h include
2020-08-26 21:41:09 -07:00
sha256.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
skein_zfs.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
spa_boot.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
spa_checkpoint.c
Refactor dnode dirty context from dbuf_dirty
2020-02-26 16:09:17 -08:00
spa_config.c
vdev_ashift should only be set once
2020-09-18 12:13:47 -07:00
spa_errlog.c
Fix typos in module/zfs/
2019-09-02 17:56:41 -07:00
spa_history.c
nowait synctask must succeed
2020-09-04 10:29:39 -07:00
spa_log_spacemap.c
Make module tunables cross platform
2019-09-05 14:49:49 -07:00
spa_misc.c
FreeBSD: Add support for procfs_list
2020-09-23 16:43:51 -07:00
spa_stats.c
FreeBSD: Add support for procfs_list
2020-09-23 16:43:51 -07:00
spa.c
vdev_ashift should only be set once
2020-09-18 12:13:47 -07:00
space_map.c
Rename refcount.h to zfs_refcount.h
2020-07-29 16:35:33 -07:00
space_reftree.c
Reduce loaded range tree memory usage
2019-10-09 10:36:03 -07:00
THIRDPARTYLICENSE.cityhash
OpenZFS 8484 - Implement aggregate sum and use for arc counters
2018-06-06 09:35:59 -07:00
THIRDPARTYLICENSE.cityhash.descrip
OpenZFS 8484 - Implement aggregate sum and use for arc counters
2018-06-06 09:35:59 -07:00
txg.c
Replace cv_{timed}wait_sig with cv_{timed}wait_idle where appropriate
2020-09-03 20:04:09 -07:00
uberblock.c
MMP interval and fail_intervals in uberblock
2019-03-21 12:47:57 -07:00
unique.c
Reduce loaded range tree memory usage
2019-10-09 10:36:03 -07:00
vdev_cache.c
Replace ASSERTV macro with compiler annotation
2019-12-05 12:37:00 -08:00
vdev_indirect_births.c
Fixes: #8934 Large kmem_alloc
2019-07-10 15:54:49 -07:00
vdev_indirect_mapping.c
Replace ASSERTV macro with compiler annotation
2019-12-05 12:37:00 -08:00
vdev_indirect.c
Avoid posting duplicate zpool events
2020-09-04 10:34:28 -07:00
vdev_initialize.c
nowait synctask must succeed
2020-09-04 10:29:39 -07:00
vdev_label.c
zfs label bootenv should store data as nvlist
2020-09-15 15:42:27 -07:00
vdev_mirror.c
vdev_ashift should only be set once
2020-09-18 12:13:47 -07:00
vdev_missing.c
Import vdev ashift optimization from FreeBSD
2020-08-21 12:53:17 -07:00
vdev_queue.c
Add device rebuild feature
2020-07-03 11:05:50 -07:00
vdev_raidz_math_aarch64_neon_common.h
FreeBSD: fix the build with Clang 11
2020-08-17 15:40:17 -07:00
vdev_raidz_math_aarch64_neon.c
Linux 5.0 compat: SIMD compatibility
2019-07-12 09:31:20 -07:00
vdev_raidz_math_aarch64_neonx2.c
Linux 5.0 compat: SIMD compatibility
2019-07-12 09:31:20 -07:00
vdev_raidz_math_avx2.c
FreeBSD: fix the build with Clang 11
2020-08-17 15:40:17 -07:00
vdev_raidz_math_avx512bw.c
Refactor ccompile.h to not include system headers
2020-07-25 20:09:50 -07:00
vdev_raidz_math_avx512f.c
FreeBSD: fix the build with Clang 11
2020-08-17 15:40:17 -07:00
vdev_raidz_math_impl.h
Fix const-correctness in raidz math
2020-02-03 10:52:41 -08:00
vdev_raidz_math_powerpc_altivec_common.h
FreeBSD: fix the build with Clang 11
2020-08-17 15:40:17 -07:00
vdev_raidz_math_powerpc_altivec.c
Prefix zfs internal endian checks with _ZFS
2020-07-28 13:02:49 -07:00
vdev_raidz_math_scalar.c
Linux 5.3: Fix switch() fall though compiler errors
2019-08-21 09:29:23 -07:00
vdev_raidz_math_sse2.c
FreeBSD: fix the build with Clang 11
2020-08-17 15:40:17 -07:00
vdev_raidz_math_ssse3.c
Refactor ccompile.h to not include system headers
2020-07-25 20:09:50 -07:00
vdev_raidz_math.c
FreeBSD: disable neon usage
2020-08-26 09:54:37 -07:00
vdev_raidz.c
Avoid posting duplicate zpool events
2020-09-04 10:34:28 -07:00
vdev_rebuild.c
nowait synctask must succeed
2020-09-04 10:29:39 -07:00
vdev_removal.c
nowait synctask must succeed
2020-09-04 10:29:39 -07:00
vdev_root.c
Import vdev ashift optimization from FreeBSD
2020-08-21 12:53:17 -07:00
vdev_trim.c
nowait synctask must succeed
2020-09-04 10:29:39 -07:00
vdev.c
vdev_ashift should only be set once
2020-09-18 12:13:47 -07:00
zap_leaf.c
Refactor dnode dirty context from dbuf_dirty
2020-02-26 16:09:17 -08:00
zap_micro.c
Rename refcount.h to zfs_refcount.h
2020-07-29 16:35:33 -07:00
zap.c
Rename refcount.h to zfs_refcount.h
2020-07-29 16:35:33 -07:00
zcp_get.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
zcp_global.c
OpenZFS 8600 - ZFS channel programs - snapshot
2018-02-08 15:29:24 -08:00
zcp_iter.c
Fix typos in module/zfs/
2019-09-02 17:56:41 -07:00
zcp_set.c
Support setting user properties in a channel program
2020-02-14 13:41:42 -08:00
zcp_synctask.c
filesystem_limit/snapshot_limit is incorrectly enforced against root
2020-07-11 17:18:02 -07:00
zcp.c
filesystem_limit/snapshot_limit is incorrectly enforced against root
2020-07-11 17:18:02 -07:00
zfeature.c
Replace ASSERTV macro with compiler annotation
2019-12-05 12:37:00 -08:00
zfs_byteswap.c
Mark functions as static
2020-06-18 12:20:38 -07:00
zfs_fm.c
Avoid posting duplicate zpool events
2020-09-04 10:34:28 -07:00
zfs_fuid.c
FreeBSD: Fix UNIX permissions checking
2020-08-18 09:57:07 -07:00
zfs_ioctl.c
zfs label bootenv should store data as nvlist
2020-09-15 15:42:27 -07:00
zfs_log.c
zfs_log_write: simplify data copying code for WR_COPIED records
2020-09-25 13:06:34 -07:00
zfs_onexit.c
Remove deduplicated send/receive code
2020-04-23 10:06:57 -07:00
zfs_quota.c
File incorrectly zeroed when receiving incremental stream that toggles -L
2020-06-09 10:41:01 -07:00
zfs_ratelimit.c
Change checksum & IO delay ratelimit values
2018-03-04 17:34:51 -08:00
zfs_replay.c
Simplify FreeBSD's locking requirements in zfs_replay.c
2020-01-22 17:55:56 -08:00
zfs_rlock.c
Add a "try" operation for range locks
2020-07-06 11:53:31 -07:00
zfs_sa.c
Add convenience wrappers for common uio usage
2020-06-14 10:09:55 -07:00
zil.c
Mark functions as static
2020-06-18 12:20:38 -07:00
zio_checksum.c
Mark functions as static
2020-06-18 12:20:38 -07:00
zio_compress.c
Avoid symbol collision with in-kernel zstdlib
2020-08-24 12:20:41 -07:00
zio_inject.c
Replace ASSERTV macro with compiler annotation
2019-12-05 12:37:00 -08:00
zio.c
Avoid posting duplicate zpool events
2020-09-04 10:34:28 -07:00
zle.c
Add include files for prototypes
2020-06-18 12:21:25 -07:00
zrlock.c
Remove dead code
2020-06-18 12:21:18 -07:00
zthr.c
Retain thread name when resuming a zthr
2020-09-03 20:09:52 -07:00
zvol.c
Fix typos
2020-06-09 21:24:09 -07:00