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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2015-09-08 14:58:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-08 15:35:28 -0700
commite1b9996b85ba3ff143ded04523cd015762d20f03 (patch)
treef08ab6192de6b46877b848f4a3d080cb13365621 /fs/ext2
parentce75799b83aaf3fd592e21531a9532bed157c6b5 (diff)
thp: vma_adjust_trans_huge(): adjust file-backed VMA too
This series of patches adds support for using PMD page table entries to map DAX files. We expect NV-DIMMs to start showing up that are many gigabytes in size and the memory consumption of 4kB PTEs will be astronomical. The patch series leverages much of the Transparant Huge Pages infrastructure, going so far as to borrow one of Kirill's patches from his THP page cache series. This patch (of 10): Since we're going to have huge pages in page cache, we need to call adjust file-backed VMA, which potentially can contain huge pages. For now we call it for all VMAs. Probably later we will need to introduce a flag to indicate that the VMA has huge pages. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Acked-by: Hillf Danton <dhillf@gmail.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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