diff options
Diffstat (limited to 'Documentation/vm/pagemap.txt')
| -rw-r--r-- | Documentation/vm/pagemap.txt | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/vm/pagemap.txt b/Documentation/vm/pagemap.txt index 7587493c67f1..5948e455c4d2 100644 --- a/Documentation/vm/pagemap.txt +++ b/Documentation/vm/pagemap.txt @@ -15,7 +15,8 @@ There are three components to pagemap: * Bits 0-54 page frame number (PFN) if present * 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 55 pte is soft-dirty (see Documentation/vm/soft-dirty.txt) + * Bits 56-60 zero * Bit 61 page is file-page or shared-anon * Bit 62 page swapped * Bit 63 page present @@ -147,5 +148,5 @@ once. Other notes: Reading from any of the files will return -EINVAL if you are not starting -the read on an 8-byte boundary (e.g., if you seeked an odd number of bytes +the read on an 8-byte boundary (e.g., if you sought an odd number of bytes into the file), or if the size of the read is not a multiple of 8 bytes. |