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Diffstat (limited to 'Documentation/admin-guide/mm/pagemap.rst')
| -rw-r--r-- | Documentation/admin-guide/mm/pagemap.rst | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/admin-guide/mm/pagemap.rst b/Documentation/admin-guide/mm/pagemap.rst index e60e9211fd9b..c57e61b5d8aa 100644 --- a/Documentation/admin-guide/mm/pagemap.rst +++ b/Documentation/admin-guide/mm/pagemap.rst @@ -115,7 +115,8 @@ Short descriptions to the page flags A free memory block managed by the buddy system allocator. The buddy system organizes free memory in blocks of various orders. An order N block has 2^N physically contiguous pages, with the BUDDY flag - set for and _only_ for the first page. + set for all pages. + Before 4.6 only the first page of the block had the flag set. 15 - COMPOUND_HEAD A compound page with order N consists of 2^N physically contiguous pages. A compound page with order 2 takes the form of "HTTT", where H donates its |