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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7ddd8faf43
I was stress testing some backports and with high load, after some time, the latest version of the selftest showed some false positive in connection with the uffdio_copy_retry. This seems to fix it while still exercising -EEXIST in the background transfer once in a while. The fork child will quit after the last UFFDIO_COPY is run, so a repeated UFFDIO_COPY may not return -EEXIST. This change restricts the -EEXIST stress to the background transfer where the memory can't go away from under it. Also updated uffdio_zeropage, so the interface is consistent. Link: http://lkml.kernel.org/r/20171004171541.1495-2-aarcange@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Pavel Emelyanov <xemul@virtuozzo.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| .gitignore | ||
| compaction_test.c | ||
| config | ||
| hugepage-mmap.c | ||
| hugepage-shm.c | ||
| Makefile | ||
| map_hugetlb.c | ||
| mlock2-tests.c | ||
| mlock2.h | ||
| mlock-random-test.c | ||
| on-fault-limit.c | ||
| run_vmtests | ||
| thuge-gen.c | ||
| transhuge-stress.c | ||
| userfaultfd.c | ||
| virtual_address_range.c | ||