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(parent: 1ba7593) | patch
vfs: allow v_holdcnt to transition 0->1 without the interlock
authormjg <mjg@FreeBSD.org>
Sun, 19 Jan 2020 17:47:04 +0000 (17:47 +0000)
committermjg <mjg@FreeBSD.org>
Sun, 19 Jan 2020 17:47:04 +0000 (17:47 +0000)
commit44fb75786324f762ac29483567a094299145d87e
tree523f73817194a77dbfa307464ab538c1c2ddf1c9tree | snapshot
parent1ba7593a6944187716a651d34f12f282d7b1819ccommit | diff
vfs: allow v_holdcnt to transition 0->1 without the interlock

Since r356672 ("vfs: rework vnode list management") there is nothing to do
apart from altering freevnodes count, but this much can be safely done based
on the result of atomic_fetchadd.

Reviewed by: kib
Tested by: pho
Differential Revision: https://reviews.freebsd.org/D23186
sys/kern/vfs_subr.c diff | blob | blame | history
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