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unionfs must pass VOP_VPUT_PAIR directly to the underlying FS so that it can have a chance to manage any special locking considerations that may be necessary. The unionfs implementation is based heavily on the corresponding nullfs implementation. Also note some outstanding issues with the unionfs locking scheme, as a first step in fixing those issues in a future change. Discussed with: kib Tested by: pho Differential Revision: https://reviews.freebsd.org/D33008 |
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union_subr.c | ||
union_vfsops.c | ||
union_vnops.c | ||
union.h |