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Message-Id: <1452282592-27290-9-git-send-email-matthew.r.wilcox@intel.com>
Date: Fri, 8 Jan 2016 14:49:52 -0500
From: Matthew Wilcox <matthew.r.wilcox@...el.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Matthew Wilcox <willy@...ux.intel.com>, linux-mm@...ck.org,
linux-nvdimm@...ts.01.org, linux-fsdevel@...r.kernel.org,
linux-kernel@...r.kernel.org, x86@...nel.org
Subject: [PATCH v3 8/8] ext4: Support for PUD-sized transparent huge pages
From: Matthew Wilcox <willy@...ux.intel.com>
ext4 needs to reserve enough space in the journal to allocate a PUD-sized
page.
Signed-off-by: Matthew Wilcox <willy@...ux.intel.com>
---
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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