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ffs: fix newly introduced LOR between mntfs vnode lock and topology lock

Description

ffs: fix newly introduced LOR between mntfs vnode lock and topology lock

The mntfs vnode lock should be before topology, as established in
ffs_mountfs(). Extend the locked region in ffs_unmount().

Reported and reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33013

Details

Provenance
kibAuthored on Nov 16 2021, 5:31 PM
Differential Revision
D33013: ffs: fix newly introduced LOR between mntfs vnode lock and topology lock
Parents
R10:16bea05ac327: ktls: Split encrypt vs decrypt OCF counters.
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