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/Linux-v5.15/Documentation/admin-guide/mm/
Duserfaultfd.rst14 For example userfaults allows a proper and more optimal implementation
30 resolve the userfaults it receives via 1) or to manage the virtual
33 The real advantage of userfaults if compared to regular virtual memory
34 management of mremap/mprotect is that the userfaults in all their
44 manager process could handle the userfaults of a multitude of
94 userfaults on the range registered. Not all ioctls will necessarily be
107 There are three basic ways to resolve userfaults:
120 By default, these wake up userfaults blocked on the range in question.
201 just fine in combination with userfaults. Userfaults trigger async
203 aren't waiting for userfaults (i.e. network bound) can keep running in
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/Linux-v5.15/tools/testing/selftests/vm/
Duserfaultfd.c1162 unsigned long userfaults; in userfaultfd_sig_test() local
1209 if (pthread_join(uffd_mon, (void **)&userfaults)) in userfaultfd_sig_test()
1213 if (userfaults) in userfaultfd_sig_test()
1214 err("Signal test failed, userfaults: %ld", userfaults); in userfaultfd_sig_test()
1216 return userfaults != 0; in userfaultfd_sig_test()