| commit | d965432234db94ee8e185f8fd8e3181bed7459fd | |
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | |
| Sat, 16 Jan 2016 00:54:43 +0000 (15 16:54 -0800) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Sat, 16 Jan 2016 01:56:32 +0000 (15 17:56 -0800) | ||
| tree | b24228d9bd6ef31b1b710327933c3ce334b85a63 | treesnapshot (tar.gz zip) |
| parent | 49071d436b51b58aeaf7abcd1877f38ca0146e31 | commitdiff |
thp: increase split_huge_page() success rate
During freeze_page(), we remove the page from rmap. It munlocks the
page if it was mlocked. clear_page_mlock() uses thelru cache, which
temporary pins the page.
Let's drain the lru cache before checking page's count vs. mapcount.
The change makes mlocked page split on first attempt, if it was not
pinned by somebody else.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
During freeze_page(), we remove the page from rmap. It munlocks the
page if it was mlocked. clear_page_mlock() uses thelru cache, which
temporary pins the page.
Let's drain the lru cache before checking page's count vs. mapcount.
The change makes mlocked page split on first attempt, if it was not
pinned by somebody else.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| mm/huge_memory.c | diffblobblamehistory |