filemap: prepare find and delete operations for huge pages

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For now, we would have HPAGE_PMD_NR entries in radix tree for every huge
page.  That's suboptimal and it will be changed to use Matthew's
multi-order entries later.

'add' operation is not changed, because we don't need it to implement
hugetmpfs: shmem uses its own implementation.

Link: http://lkml.kernel.org/r/1466021202-61880-25-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Kirill A. Shutemov 2016-07-26 15:26:04 -07:00 • committed by Linus Torvalds

parent c78c66d1dd

commit 83929372f6

1 changed files with 122 additions and 56 deletions

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mm/filemap.c

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