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/Linux-v5.10/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
92 userfaults on the range registered. Not all ioctls will necessarily be
103 The primary ioctl to resolve userfaults is ``UFFDIO_COPY``. That
105 up the blocked userfaults
175 just fine in combination with userfaults. Userfaults trigger async
177 aren't waiting for userfaults (i.e. network bound) can keep running in
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/Linux-v5.10/tools/testing/selftests/vm/
Duserfaultfd.c1151 unsigned long userfaults; in userfaultfd_sig_test() local
1217 if (pthread_join(uffd_mon, (void **)&userfaults)) in userfaultfd_sig_test()
1221 if (userfaults) in userfaultfd_sig_test()
1223 userfaults); in userfaultfd_sig_test()
1225 return userfaults != 0; in userfaultfd_sig_test()