The patch titled
Subject: ext4: support for PUD-sized transparent huge pages
has been added to the -mm tree. Its filename is
ext4-support-for-pud-sized-transparent-huge-pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ext4-support-for-pud-sized-transparent-huge-pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ext4-support-for-pud-sized-transparent-huge-pages.patch
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------------------------------------------------------
From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Subject: ext4: support for PUD-sized transparent huge pages
ext4 needs to reserve enough space in the journal to allocate a PUD-sized
page.
Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ext4/file.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN fs/ext4/file.c~ext4-support-for-pud-sized-transparent-huge-pages fs/ext4/file.c
--- a/fs/ext4/file.c~ext4-support-for-pud-sized-transparent-huge-pages
+++ a/fs/ext4/file.c
@@ -205,6 +205,10 @@ static int ext4_dax_fault(struct vm_area
nblocks = ext4_chunk_trans_blocks(inode,
PMD_SIZE / PAGE_SIZE);
break;
+ case FAULT_FLAG_SIZE_PUD:
+ nblocks = ext4_chunk_trans_blocks(inode,
+ PUD_SIZE / PAGE_SIZE);
+ break;
default:
return VM_FAULT_FALLBACK;
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxxxx are
mmdebug-always-evaluate-the-arguments-to-vm_bug_on_.patch
mm-convert-an-open-coded-vm_bug_on_vma.patch
mmfsdax-change-pmd_fault-to-huge_fault.patch
mm-add-support-for-pud-sized-transparent-hugepages.patch
mincore-add-support-for-puds.patch
procfs-add-support-for-puds-to-smaps-clear_refs-and-pagemap.patch
x86-unify-native__get_and_clear-smp-case.patch
x86-fix-whitespace-issues.patch
x86-add-support-for-pud-sized-transparent-hugepages.patch
dax-support-for-transparent-pud-pages.patch
ext4-support-for-pud-sized-transparent-huge-pages.patch
dax-use-vmf-gfp_mask.patch
dax-remove-unnecessary-rechecking-of-i_size.patch
dax-use-vmf-pgoff-in-fault-handlers.patch
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