kernel: Update patch series

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

kernel/0008-mincore-Add-named-constant-for-reported-present-bit.patch

+From 181ab3a738d454c0aa6f983e25ca076638d43179 Mon Sep 17 00:00:00 2001
+From: Pavel Emelyanov <xemul@parallels.com>
+Date: Fri, 25 Nov 2011 17:58:28 +0400
+Subject: [PATCH 1/2] mincore: Add named constant for reported present bit
+
+Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
+Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
+---
+ include/linux/mman.h |    2 ++
+ mm/huge_memory.c     |    2 +-
+ mm/mincore.c         |   10 +++++-----
+ 3 files changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/include/linux/mman.h b/include/linux/mman.h
+index 8b74e9b..e4fda1e 100644
+--- a/include/linux/mman.h
++++ b/include/linux/mman.h
+@@ -10,6 +10,8 @@
+ #define OVERCOMMIT_ALWAYS		1
+ #define OVERCOMMIT_NEVER		2
+ 
++#define MINCORE_RESIDENT	0x1
++
+ #ifdef __KERNEL__
+ #include <linux/mm.h>
+ #include <linux/percpu_counter.h>
+diff --git a/mm/huge_memory.c b/mm/huge_memory.c
+index 4298aba..a0acb3e 100644
+--- a/mm/huge_memory.c
++++ b/mm/huge_memory.c
+@@ -1045,7 +1045,7 @@ int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
+ 			 * All logical pages in the range are present
+ 			 * if backed by a huge page.
+ 			 */
+-			memset(vec, 1, (end - addr) >> PAGE_SHIFT);
++			memset(vec, MINCORE_RESIDENT, (end - addr) >> PAGE_SHIFT);
+ 		}
+ 	} else
+ 		spin_unlock(&vma->vm_mm->page_table_lock);
+diff --git a/mm/mincore.c b/mm/mincore.c
+index 636a8687..b719cdd 100644
+--- a/mm/mincore.c
++++ b/mm/mincore.c
+@@ -38,7 +38,7 @@ static void mincore_hugetlb_page_range(struct vm_area_struct *vma,
+ 				       addr & huge_page_mask(h));
+ 		present = ptep && !huge_pte_none(huge_ptep_get(ptep));
+ 		while (1) {
+-			*vec = present;
++			*vec = (present ? MINCORE_RESIDENT : 0);
+ 			vec++;
+ 			addr += PAGE_SIZE;
+ 			if (addr == end)
+@@ -83,7 +83,7 @@ static unsigned char mincore_page(struct address_space *mapping, pgoff_t pgoff)
+ 		page_cache_release(page);
+ 	}
+ 
+-	return present;
++	return present ? MINCORE_RESIDENT : 0;
+ }
+ 
+ static void mincore_unmapped_range(struct vm_area_struct *vma,
+@@ -122,7 +122,7 @@ static void mincore_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
+ 		if (pte_none(pte))
+ 			mincore_unmapped_range(vma, addr, next, vec);
+ 		else if (pte_present(pte))
+-			*vec = 1;
++			*vec = MINCORE_RESIDENT;
+ 		else if (pte_file(pte)) {
+ 			pgoff = pte_to_pgoff(pte);
+ 			*vec = mincore_page(vma->vm_file->f_mapping, pgoff);
+@@ -131,14 +131,14 @@ static void mincore_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
+ 
+ 			if (is_migration_entry(entry)) {
+ 				/* migration entries are always uptodate */
+-				*vec = 1;
++				*vec = MINCORE_RESIDENT;
+ 			} else {
+ #ifdef CONFIG_SWAP
+ 				pgoff = entry.val;
+ 				*vec = mincore_page(&swapper_space, pgoff);
+ #else
+ 				WARN_ON(1);
+-				*vec = 1;
++				*vec = MINCORE_RESIDENT;
+ #endif
+ 			}
+ 		}
+-- 
+1.7.7.3
+

kernel/0009-mincore-Report-whether-page-is-anon-or-not.patch

+From 1d2879854a34a16bcfadeb7c71c05290d59eeb36 Mon Sep 17 00:00:00 2001
+From: Pavel Emelyanov <xemul@parallels.com>
+Date: Fri, 25 Nov 2011 18:01:12 +0400
+Subject: [PATCH 2/2] mincore: Report whether page is anon or not
+
+This is required not to dump pages from private file mappings, that are
+not mapped or not yet cow-ed.
+
+The thing is that mincode reports bit 1 for pages that are in memory, regardless
+of whether they are mapped or not. But in case we have mapped a file of 2 pages and
+read a single page mincore will report 1 for both - the 1st one being mapped and
+the 2nd one being in page cache due to readahead.
+
+With this fix both pages will be !PageAnon and we can skip them (see further patches
+for crtools).
+
+Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
+Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
+---
+ include/linux/mman.h |    1 +
+ mm/mincore.c         |   15 +++++++++++++--
+ 2 files changed, 14 insertions(+), 2 deletions(-)
+
+diff --git a/include/linux/mman.h b/include/linux/mman.h
+index e4fda1e..9d1de16 100644
+--- a/include/linux/mman.h
++++ b/include/linux/mman.h
+@@ -11,6 +11,7 @@
+ #define OVERCOMMIT_NEVER		2
+ 
+ #define MINCORE_RESIDENT	0x1
++#define MINCORE_ANON		0x2
+ 
+ #ifdef __KERNEL__
+ #include <linux/mm.h>
+diff --git a/mm/mincore.c b/mm/mincore.c
+index b719cdd..f825327 100644
+--- a/mm/mincore.c
++++ b/mm/mincore.c
+@@ -38,7 +38,7 @@ static void mincore_hugetlb_page_range(struct vm_area_struct *vma,
+ 				       addr & huge_page_mask(h));
+ 		present = ptep && !huge_pte_none(huge_ptep_get(ptep));
+ 		while (1) {
+-			*vec = (present ? MINCORE_RESIDENT : 0);
++			*vec = (present ? MINCORE_RESIDENT : 0) | MINCORE_ANON;
+ 			vec++;
+ 			addr += PAGE_SIZE;
+ 			if (addr == end)
+@@ -86,6 +86,17 @@ static unsigned char mincore_page(struct address_space *mapping, pgoff_t pgoff)
+ 	return present ? MINCORE_RESIDENT : 0;
+ }
+ 
++static unsigned char mincore_pte(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
++{
++	struct page *pg;
++
++	pg = vm_normal_page(vma, addr, pte);
++	if (pg == NULL)
++		return 0;
++	else
++		return PageAnon(pg) ? MINCORE_ANON : 0;
++}
++
+ static void mincore_unmapped_range(struct vm_area_struct *vma,
+ 				unsigned long addr, unsigned long end,
+ 				unsigned char *vec)
+@@ -122,7 +133,7 @@ static void mincore_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
+ 		if (pte_none(pte))
+ 			mincore_unmapped_range(vma, addr, next, vec);
+ 		else if (pte_present(pte))
+-			*vec = MINCORE_RESIDENT;
++			*vec = MINCORE_RESIDENT | mincore_pte(vma, addr, pte);
+ 		else if (pte_file(pte)) {
+ 			pgoff = pte_to_pgoff(pte);
+ 			*vec = mincore_page(vma->vm_file->f_mapping, pgoff);
+-- 
+1.7.7.3
+

kernel/series

+0001-fs-proc-Make-proc_get_link-to-use-dentry-instead-of-.patch
+0002-fs-proc-Introduce-the-proc-pid-map_files-directory-v.patch
+0003-procfs-introduce-the-proc-pid-map_files-directory-ch.patch
+0004-fs-proc-Add-start_data-end_data-start_brk-members-to.patch
+0005-fs-proc-Introduce-the-Children-line-in-proc-pid-stat.patch
+0006-clone-Introduce-the-CLONE_CHILD_USEPID-functionality.patch
+0007-prctl-Add-PR_-codes-to-restore-vDSO-and-tune-up-mm_s.patch
+0008-mincore-Add-named-constant-for-reported-present-bit.patch
+0009-mincore-Report-whether-page-is-anon-or-not.patch