Alexander Motin 523e1295fe Introduce limit on size of L2ARC headers ... Since L2ARC buffers are not evicted on memory pressure, too large amount of headers on system with irrationally large L2ARC can render it slow or even unusable. This change limits L2ARC writes and rebuild if unevictable L2ARC-only headers reach dangerous level. While there, call arc_adapt() on L2ARC rebuild, so that it could properly grow arc_c, reflecting potentially significant ARC size increase and avoiding slow growth with hopeless eviction attempts later when "overflow" is detected. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reported-by: Richard Elling <Richard.Elling@RichardElling.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Closes #10765		2020-08-25 14:33:36 -07:00
..
avl	Make use of ZFS_DEBUG consistent within kmod sources	2020-07-25 20:07:44 -07:00
icp	Prefix zfs internal endian checks with _ZFS	2020-07-28 13:02:49 -07:00
lua	Mark lua setjmp/longjmp for powerpc weak	2020-08-25 10:32:49 -07:00
nvpair	Prefix zfs internal endian checks with _ZFS	2020-07-28 13:02:49 -07:00
os	Fix inability to destroy snapshot used over NFS	2020-08-24 17:33:02 -07:00
spl	Cleanup linux module kbuild files	2020-06-10 09:24:15 -07:00
unicode	Prefix zfs internal endian checks with _ZFS	2020-07-28 13:02:49 -07:00
zcommon	Make formatting of dedup values string consistent	2020-08-22 10:58:07 -07:00
zfs	Introduce limit on size of L2ARC headers	2020-08-25 14:33:36 -07:00
zstd	Avoid symbol collision with in-kernel zstdlib	2020-08-24 12:20:41 -07:00
.gitignore	Cleanup linux module kbuild files	2020-06-10 09:24:15 -07:00
Kbuild.in	Add zstd support to zfs	2020-08-20 10:30:06 -07:00
Makefile.bsd	FreeBSD: 11.x arc_stats compatibility	2020-08-20 10:55:02 -07:00
Makefile.in	Add zstd support to zfs	2020-08-20 10:30:06 -07:00