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fef8953ae4
By passing a non-null flag we allow fixup_user_fault to retry, which enables userfaultfd. As during these retries we might drop the mmap_sem we need to check if that happened and redo the complete chain of actions. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: "Jason J. Herne" <jjherne@linux.vnet.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: Eric B Munson <emunson@akamai.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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