The patch titled
mm/remap_pfn_range: restore missing flush
has been added to the -mm tree. Its filename is
mm-remap_pfn_range-restore-missing-flush.patch
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------------------------------------------------------
Subject: mm/remap_pfn_range: restore missing flush
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Restore the cache flush and BUG_ON removed in the conversion to using
apply_to_page_range().
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN mm/memory.c~mm-remap_pfn_range-restore-missing-flush mm/memory.c
--- a/mm/memory.c~mm-remap_pfn_range-restore-missing-flush
+++ a/mm/memory.c
@@ -1485,6 +1485,8 @@ static int remap_area_pte_fn(pte_t *ptep
struct remap_data *rmd = data;
pte_t pte = pte_mkspecial(pfn_pte(rmd->pfn++, rmd->prot));
+ BUG_ON(!pte_none(*ptep));
+
set_pte_at(rmd->mm, addr, ptep, pte);
return 0;
@@ -1536,6 +1538,8 @@ int remap_pfn_range(struct vm_area_struc
BUG_ON(addr >= end);
+ flush_cache_range(vma, addr, end);
+
rmd.mm = mm;
rmd.pfn = pfn;
rmd.prot = prot;
_
Patches currently in -mm which might be from jeremy@xxxxxxxx are
linux-next.patch
mm-implement-remap_pfn_range-with-apply_to_page_range.patch
mm-apply_to_range-call-pte-function-with-lazy-updates.patch
mm-remap_pfn_range-restore-missing-flush.patch
drivers-xen-xenbus-xenbus_clientc-cleanup-kerneldoc.patch
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