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/Linux-v6.6/Documentation/admin-guide/mm/
Duserfaultfd.rst12 For example userfaults allows a proper and more optimal implementation
31 resolve the userfaults it receives via 1) or to manage the virtual
34 The real advantage of userfaults if compared to regular virtual memory
35 management of mremap/mprotect is that the userfaults in all their
44 manager process could handle the userfaults of a multitude of
127 userfaults on the range registered. Not all ioctls will necessarily be
140 There are three basic ways to resolve userfaults:
153 By default, these wake up userfaults blocked on the range in question.
274 just fine in combination with userfaults. Userfaults trigger async
276 aren't waiting for userfaults (i.e. network bound) can keep running in
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/Linux-v6.6/tools/testing/selftests/mm/
Duffd-unit-tests.c766 unsigned long userfaults; in uffd_sigbus_test_common() local
800 if (pthread_join(uffd_mon, (void **)&userfaults)) in uffd_sigbus_test_common()
803 if (userfaults) in uffd_sigbus_test_common()
804 uffd_test_fail("Signal test failed, userfaults: %ld", userfaults); in uffd_sigbus_test_common()