Alexander Motin 5f42d1dbf2 System-wide speculative prefetch limit. ... With some pathological access patterns it is possible to make ZFS accumulate almost unlimited amount of speculative prefetch ZIOs. Combined with linear ABD allocations in RAIDZ code, it appears to be possible to exhaust system KVA, triggering kernel panic. Address this by introducing a system-wide counter of active prefetch requests and blocking prefetch distance doubling per stream hits if the number of active requests is higher that ~6% of ARC size. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #14516		2023-03-01 15:27:40 -08:00
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avl	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
icp	icp: Prevent compilers from optimizing away memset() in gcm_clear_ctx()	2023-02-28 17:28:50 -08:00
lua	x86 asm: Replace .align with .balign	2023-01-24 09:04:39 -08:00
nvpair	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
os	Linux: zfs_fillpage() should handle partial pages from end of file	2023-03-01 13:19:47 -08:00
unicode	Illumos #15286: do_composition() needs sign awareness	2023-01-05 11:16:21 -08:00
zcommon	Configure zed's diagnosis engine with vdev properties	2023-01-23 13:14:25 -08:00
zfs	System-wide speculative prefetch limit.	2023-03-01 15:27:40 -08:00
zstd	Resolve WS-2021-0184 vulnerability in zstd	2023-02-02 15:12:51 -08:00
.gitignore	FreeBSD: Ignore symlink to i386 includes	2022-08-02 16:34:23 -07:00
Kbuild.in	Unify Assembler files between Linux and Windows	2023-01-17 11:09:19 -08:00
Makefile.bsd	Makefile.bsd: cleanup and sync with FreeBSD	2023-02-28 17:33:59 -08:00
Makefile.in	autoconf: use include directives instead of recursing down lib	2022-05-10 10:18:11 -07:00