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Differential D12704

Fix a racy VI_DOOMED check in MNT_VNODE_FOREACH_ALL()
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Authored by markj on Oct 17 2017, 5:51 PM.
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kib
mckusick
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rS324704: Fix a racy VI_DOOMED check in MNT_VNODE_FOREACH_ALL().
Summary

MNT_VNODE_FOREACH_ALL() is supposed to avoid returning doomed vnodes,
but the VI_DOOMED check it uses is done without the vnode interlock
held.

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Buildable 12090
Build 12392: arc lint + arc unit

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sys/
kern/
40 lines

Diff 34071

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sys/kern/vfs_subr.c

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