zfs/module/zcommon
Brian Behlendorf 61f3638a34 Add prefetch property
ZFS prefetch is currently governed by the zfs_prefetch_disable
tunable. However, this is a module-wide settings - if a specific
dataset benefits from prefetch, while others have issue with it,
an optimal solution does not exists.

This commit introduce the "prefetch" tri-state property, which enable
granular control (at dataset/volume level) for prefetching.

This patch does not remove the zfs_prefetch_disable, which remains
a system-wide switch for enable/disable prefetch. However, to avoid
duplication, it would be preferable to deprecate and then remove
the module tunable.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Gionatan Danti <g.danti@assyoma.it>
Co-authored-by: Gionatan Danti <g.danti@assyoma.it>
Closes #15237 
Closes #15436
2024-04-30 10:01:15 -07:00
..
cityhash.c Compile cityhash code into libzfs 2020-03-27 09:11:22 -07:00
zfeature_common.c Create zap for root vdev 2023-04-20 10:07:56 -07:00
zfs_comutil.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
zfs_deleg.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
zfs_fletcher.c Miscellaneous FreBSD compilation bugfixes 2023-04-06 10:35:02 -07:00
zfs_fletcher_aarch64_neon.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_avx512.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_intel.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_sse.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_superscalar.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_superscalar4.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_namecheck.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfs_prop.c Add prefetch property 2024-04-30 10:01:15 -07:00
zpool_prop.c Add slow disk diagnosis to ZED 2024-04-29 13:50:05 -07:00
zprop_common.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00