summaryrefslogtreecommitdiffhomepage
path: root/test/syscalls/linux/concurrency.cc
diff options
context:
space:
mode:
authorJamie Liu <jamieliu@google.com>2018-12-17 11:37:38 -0800
committerShentubot <shentubot@google.com>2018-12-17 11:38:59 -0800
commit2421006426445a1827422c2dbdd6fc6a47087147 (patch)
tree49aa2bc113c208fc117aff8a036866a7260090e5 /test/syscalls/linux/concurrency.cc
parent54694086dfb02a6f8453f043a44ffd10bb5a7070 (diff)
Implement mlock(), kind of.
Currently mlock() and friends do nothing whatsoever. However, mlocking is directly application-visible in a number of ways; for example, madvise(MADV_DONTNEED) and msync(MS_INVALIDATE) both fail on mlocked regions. We handle this inconsistently: MADV_DONTNEED is too important to not work, but MS_INVALIDATE is rejected. Change MM to track mlocked regions in a manner consistent with Linux. It still will not actually pin pages into host physical memory, but: - mlock() will now cause sentry memory management to precommit mlocked pages. - MADV_DONTNEED and MS_INVALIDATE will interact with mlocked pages as described above. PiperOrigin-RevId: 225861605 Change-Id: Iee187204979ac9a4d15d0e037c152c0902c8d0ee
Diffstat (limited to 'test/syscalls/linux/concurrency.cc')
0 files changed, 0 insertions, 0 deletions