The patch titled
s390: remove struct page entries for DCSS memory segments
has been added to the -mm tree. Its filename is
s390-remove-struct-page-entries-for-dcss-memory-segments.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: s390: remove struct page entries for DCSS memory segments
From: Carsten Otte <cotte@xxxxxxxxxx>
Remove struct page entries for DCSS segments that are being loaded. They
can still be accessed correctly, thanks to the struct page-less XIP work of
previous patches.
Signed-off-by: Carsten Otte <cotte@xxxxxxxxxx>
Cc: Nick Piggin <npiggin@xxxxxxx>
Cc: Jared Hulbert <jaredeh@xxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/s390/mm/vmem.c | 18 +-----------------
1 file changed, 1 insertion(+), 17 deletions(-)
diff -puN arch/s390/mm/vmem.c~s390-remove-struct-page-entries-for-dcss-memory-segments arch/s390/mm/vmem.c
--- a/arch/s390/mm/vmem.c~s390-remove-struct-page-entries-for-dcss-memory-segments
+++ a/arch/s390/mm/vmem.c
@@ -343,8 +343,6 @@ out:
int add_shared_memory(unsigned long start, unsigned long size)
{
struct memory_segment *seg;
- struct page *page;
- unsigned long pfn, num_pfn, end_pfn;
int ret;
mutex_lock(&vmem_mutex);
@@ -359,24 +357,10 @@ int add_shared_memory(unsigned long star
if (ret)
goto out_free;
- ret = vmem_add_mem(start, size, 0);
+ ret = vmem_add_range(start, size, 0);
if (ret)
goto out_remove;
- pfn = PFN_DOWN(start);
- num_pfn = PFN_DOWN(size);
- end_pfn = pfn + num_pfn;
-
- page = pfn_to_page(pfn);
- memset(page, 0, num_pfn * sizeof(struct page));
-
- for (; pfn < end_pfn; pfn++) {
- page = pfn_to_page(pfn);
- init_page_count(page);
- reset_page_mapcount(page);
- SetPageReserved(page);
- INIT_LIST_HEAD(&page->lru);
- }
goto out;
out_remove:
_
Patches currently in -mm which might be from cotte@xxxxxxxxxx are
git-kvm.patch
git-s390.patch
mm-introduce-vm_mixedmap.patch
mm-introduce-pte_special-pte-bit.patch
mm-add-vm_insert_mixed.patch
return-pfn-from-direct_access-for-xip.patch
xip-support-non-struct-page-backed-memory.patch
s390-implement-pte-special-bit.patch
s390-remove-struct-page-entries-for-dcss-memory-segments.patch
remove-duplicated-unlikely-in-is_err.patch
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