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authorYang Shi <yang.shi@linux.alibaba.com>2020-06-03 16:03:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-03 20:09:49 -0700
commit67e4eb076840c7d199ebae0a8825c89a5b07d162 (patch)
tree2cc80a3f7a0a59b7d27eb50a53d5139722077b46 /lib/pci_iomap.c
parent885902531586d5a20a74099c1357bfdc982befe3 (diff)
downloadlinux-67e4eb076840c7d199ebae0a8825c89a5b07d162.tar.bz2
mm: thp: don't need to drain lru cache when splitting and mlocking THP
Since commit 8f182270dfec ("mm/swap.c: flush lru pvecs on compound page arrival") THP would not stay in pagevec anymore. So the optimization made by commit d965432234db ("thp: increase split_huge_page() success rate") doesn't make sense anymore, which tries to unpin munlocked THPs from pagevec by draining pagevec. Draining lru cache before isolating THP in mlock path is also unnecessary. b676b293fb48 ("mm, thp: fix mapped pages avoiding unevictable list on mlock") added it and 9a73f61bdb8a ("thp, mlock: do not mlock PTE-mapped file huge pages") accidentally carried it over after the above optimization went in. Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Link: http://lkml.kernel.org/r/1585946493-7531-1-git-send-email-yang.shi@linux.alibaba.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/pci_iomap.c')
0 files changed, 0 insertions, 0 deletions