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author | Klemens Nanni <kn@cvs.openbsd.org> | 2022-02-10 10:15:36 +0000 |
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committer | Klemens Nanni <kn@cvs.openbsd.org> | 2022-02-10 10:15:36 +0000 |
commit | d5bce34037bf75f0bf44183231876cc74dc6787d (patch) | |
tree | f6f7d29ba1d17b614149b0951199bcd931c9ad74 /sys/netinet/ip_gre.c | |
parent | bb180ea8a9f82c56b5ef1d42ac28a4165decbe92 (diff) |
Assert vm map locks
Introduce vm_map_assert_{wrlock,rdlock,anylock,unlocked}() in rwlock(9)
fashion and back up function comments about locking assumptions with proper
assertions.
Also add new comments/assertions based on code analysis and sync with
NetBSD as much as possible.
vm_map_lock() and vm_map_lock_read() are used for exclusive and shared
access respectively; currently no code path is purely protected by
vm_map_lock_read() alone, i.e. functions called with a read lock held by the
callee are also called with a write lock elsewhere.
Thus only vm_map_assert_{wrlock,anylock}() are used as of now.
This should help with unlocking UVM related syscalls
Tested as part of a larger diff through
- amd64 package bulk build by naddy
- amd64, arm64, powerpc64 base builds and regress by bluhm
- amd64 and sparc64 base builds and regress by me
Input mpi
Feedback OK kettenis
Diffstat (limited to 'sys/netinet/ip_gre.c')
0 files changed, 0 insertions, 0 deletions