[PATCH] thp: fix another corner case of munlock() vs. THPs

2017-03-02 Thread Kirill A. Shutemov
The following test case triggers BUG() in munlock_vma_pages_range(): int main(int argc, char *argv[]) { int fd; system("mount -t tmpfs -o huge=always none /mnt"); fd = open("/mnt/test", O_CREAT | O_RDWR); ftruncate(fd

[PATCH] thp: fix another corner case of munlock() vs. THPs

2017-03-02 Thread Kirill A. Shutemov
The following test case triggers BUG() in munlock_vma_pages_range(): int main(int argc, char *argv[]) { int fd; system("mount -t tmpfs -o huge=always none /mnt"); fd = open("/mnt/test", O_CREAT | O_RDWR); ftruncate(fd