Mateusz Guzik cc3593fbd9 vfs: rework vnode list management ... The current notion of an active vnode is eliminated. Vnodes transition between 0<->1 hold counts all the time and the associated traversal between different lists induces significant scalability problems in certain workloads. Introduce a global list containing all allocated vnodes. They get unlinked only when UMA reclaims memory and are only requeued when hold count reaches 0. Sample result from an incremental make -s -j 104 bzImage on tmpfs: stock: 118.55s user 3649.73s system 7479% cpu 50.382 total patched: 122.38s user 1780.45s system 6242% cpu 30.480 total Reviewed by: jeff Tested by: pho (in a larger patch, previous version) Differential Revision: https://reviews.freebsd.org/D22997		2020-01-13 02:37:25 +00:00
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union_subr.c	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
union_vfsops.c	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
union_vnops.c	vfs: rework vnode list management	2020-01-13 02:37:25 +00:00
union.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00