[PATCH v3 8/8] ext4: Support for PUD-sized transparent huge pages
From: Matthew Wilcox <hidden>
Date: 2016-01-08 19:49:52
Also in:
linux-fsdevel, lkml, nvdimm
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
From: Matthew Wilcox <redacted> ext4 needs to reserve enough space in the journal to allocate a PUD-sized page. Signed-off-by: Matthew Wilcox <redacted> --- fs/ext4/file.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 665fc4b..cec5fa7 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c@@ -211,6 +211,10 @@ static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 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; }
--
2.6.4
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