The patch titled
Subject: dax: use vmf->gfp_mask
has been added to the -mm tree. Its filename is
dax-use-vmf-gfp_mask.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/dax-use-vmf-gfp_mask.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/dax-use-vmf-gfp_mask.patch
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------------------------------------------------------
From: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
Subject: dax: use vmf->gfp_mask
Very little exciting in here. This is all based on the PUD support code
that was just sent, mostly addressing things that came up during review of
the PUD code but weren't really justifiable as being mixed into the adding
of PUD support.
This patch (of 6):
We were assuming that it was OK to do a GFP_KERNEL allocation in page
fault context. That appears to be largely true, but filesystems are
permitted to override that in their setting of mapping->gfp_flags, which
the VM then massages into vmf->gfp_flags. No practical difference for
now, but there may come a day when we would have surprised a filesystem.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/dax.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN fs/dax.c~dax-use-vmf-gfp_mask fs/dax.c
--- a/fs/dax.c~dax-use-vmf-gfp_mask
+++ a/fs/dax.c
@@ -312,7 +312,7 @@ static int dax_load_hole(struct address_
struct inode *inode = mapping->host;
if (!page)
page = find_or_create_page(mapping, vmf->pgoff,
- GFP_KERNEL | __GFP_ZERO);
+ vmf->gfp_mask | __GFP_ZERO);
if (!page)
return VM_FAULT_OOM;
/* Recheck i_size under page lock to avoid truncate race */
_
Patches currently in -mm which might be from matthew.r.wilcox@xxxxxxxxx are
mm-fix-memory-leak-in-copy_huge_pmd.patch
mm-use-linear_page_index-in-do_fault.patch
dax-use-vmf-gfp_mask.patch
dax-remove-unnecessary-rechecking-of-i_size.patch
dax-use-vmf-pgoff-in-fault-handlers.patch
dax-use-page_cache_size-where-appropriate.patch
dax-factor-dax_insert_pmd_mapping-out-of-dax_pmd_fault.patch
dax-factor-dax_insert_pud_mapping-out-of-dax_pud_fault.patch
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