> diff --git a/Documentation/vm/pagemap.txt b/Documentation/vm/pagemap.txt
> index 4600cbe..7587493 100644
> --- a/Documentation/vm/pagemap.txt
> +++ b/Documentation/vm/pagemap.txt
> @@ -16,7 +16,7 @@ There are three components to pagemap:
> * Bits 0-4 swap type if swapped
> * Bits 5-54 swap offset if swapped
> * Bits 55-60 page shift (page size = 1<<page shift)
> - * Bit 61 reserved for future use
> + * Bit 61 page is file-page or shared-anon
> * Bit 62 page swapped
> * Bit 63 page present
hmm..
Here says, file or shmem.
> diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
> index 2d60492..bc3df31 100644
> --- a/fs/proc/task_mmu.c
> +++ b/fs/proc/task_mmu.c
> @@ -700,6 +700,7 @@ struct pagemapread {
>
> #define PM_PRESENT PM_STATUS(4LL)
> #define PM_SWAP PM_STATUS(2LL)
> +#define PM_FILE PM_STATUS(1LL)
> #define PM_NOT_PRESENT PM_PSHIFT(PAGE_SHIFT)
> #define PM_END_OF_BUFFER 1
But, this macro says it's file. it seems a bit misleading. ;-)
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