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mm: hugetlb: proc: add hugetlb-related fields to /proc/PID/smaps
Currently /proc/PID/smaps provides no usage info for vma(VM_HUGETLB), which is inconvenient when we want to know per-task or per-vma base hugetlb usage. To solve this, this patch adds new fields for hugetlb usage like below: Size: 20480 kB Rss: 0 kB Pss: 0 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 0 kB Anonymous: 0 kB AnonHugePages: 0 kB Shared_Hugetlb: 18432 kB Private_Hugetlb: 2048 kB Swap: 0 kB KernelPageSize: 2048 kB MMUPageSize: 2048 kB Locked: 0 kB VmFlags: rd wr mr mw me de ht [hughd@google.com: fix Private_Hugetlb alignment ] Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Joern Engel <joern@logfs.org> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Naoya Horiguchi
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Linus Torvalds
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Nov 6, 2015
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