From: Matthew Wilcox <matthew.r.wilcox@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@linux.intel.com>,
linux-mm@kvack.org, linux-nvdimm@lists.01.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
x86@kernel.org
Subject: [PATCH v5 11/14] ext4: Support for PUD-sized transparent huge pages
Date: Thu, 10 Mar 2016 18:55:28 -0500 [thread overview]
Message-ID: <1457654131-4562-12-git-send-email-matthew.r.wilcox@intel.com> (raw)
In-Reply-To: <1457654131-4562-1-git-send-email-matthew.r.wilcox@intel.com>
From: Matthew Wilcox <willy@linux.intel.com>
ext4 needs to reserve enough space in the journal to allocate a PUD-sized
page.
Signed-off-by: Matthew Wilcox <willy@linux.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 a2f975e..b966b17 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;
}
--
2.7.0
--
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next prev parent reply other threads:[~2016-03-10 23:55 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 23:55 [PATCH v5 00/14] Support for transparent PUD pages for DAX files Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 01/14] mmdebug: Always evaluate the arguments to VM_BUG_ON_* Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 02/14] mm: Convert an open-coded VM_BUG_ON_VMA Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 03/14] mm,fs,dax: Change ->pmd_fault to ->huge_fault Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 04/14] mm: Add support for PUD-sized transparent hugepages Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 05/14] mincore: Add support for PUDs Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 06/14] procfs: Add support for PUDs to smaps, clear_refs and pagemap Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 07/14] x86: Unify native_*_get_and_clear !SMP case Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 08/14] x86: Fix whitespace issues Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 09/14] x86: Add support for PUD-sized transparent hugepages Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 10/14] dax: Support for transparent PUD pages Matthew Wilcox
2016-03-10 23:55 ` Matthew Wilcox [this message]
2016-03-10 23:55 ` [PATCH v5 12/14] dax: Use vmf->gfp_mask Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 13/14] dax: Remove unnecessary rechecking of i_size Matthew Wilcox
2016-03-10 23:55 ` [PATCH v5 14/14] dax: Use vmf->pgoff in fault handlers Matthew Wilcox
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