Konstantin Belousov d5b078163e null_bypass(): prevent loosing the only reference to the lower vnode ... The upper vnode reference to the lower vnode is the only reference that keeps our pointer to the lower vnode alive. If lower vnode is relocked during the VOP call, upper vnode might become unlocked and reclaimed, which invalidates our reference. Add a transient vhold around VOP call. Reported and tested by: pho Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D31310		2021-07-27 19:58:47 +03:00
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null_subr.c	vfs: add v_irflag accessors	2021-01-03 06:50:06 +00:00
null_vfsops.c	Allow stacked filesystems to be recursively unmounted	2021-07-24 12:52:00 -07:00
null_vnops.c	null_bypass(): prevent loosing the only reference to the lower vnode	2021-07-27 19:58:47 +03:00
null.h	Allow stacked filesystems to be recursively unmounted	2021-07-24 12:52:00 -07:00