Subject: [merged] vmcore-allow-user-process-to-remap-elf-note-segment-buffer.patch removed from -mm tree
To: d.hatayama@xxxxxxxxxxxxxx,kosaki.motohiro@xxxxxxxxxxxxxx,kumagai-atsushi@xxxxxxxxxxxxxxxxx,lisa.mitchell@xxxxxx,vgoyal@xxxxxxxxxx,zhangyanfei@xxxxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 08 Jul 2013 12:25:26 -0700
The patch titled
Subject: vmcore: allow user process to remap ELF note segment buffer
has been removed from the -mm tree. Its filename was
vmcore-allow-user-process-to-remap-elf-note-segment-buffer.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: HATAYAMA Daisuke <d.hatayama@xxxxxxxxxxxxxx>
Subject: vmcore: allow user process to remap ELF note segment buffer
Now ELF note segment has been copied in the buffer on vmalloc memory. To
allow user process to remap the ELF note segment buffer with
remap_vmalloc_page, the corresponding VM area object has to have
VM_USERMAP flag set.
[akpm@xxxxxxxxxxxxxxxxxxxx: use the conventional comment layout]
Signed-off-by: HATAYAMA Daisuke <d.hatayama@xxxxxxxxxxxxxx>
Acked-by: Vivek Goyal <vgoyal@xxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Atsushi Kumagai <kumagai-atsushi@xxxxxxxxxxxxxxxxx>
Cc: Lisa Mitchell <lisa.mitchell@xxxxxx>
Cc: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/vmcore.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff -puN fs/proc/vmcore.c~vmcore-allow-user-process-to-remap-elf-note-segment-buffer fs/proc/vmcore.c
--- a/fs/proc/vmcore.c~vmcore-allow-user-process-to-remap-elf-note-segment-buffer
+++ a/fs/proc/vmcore.c
@@ -369,6 +369,7 @@ static int __init merge_note_headers_elf
Elf64_Ehdr *ehdr_ptr;
Elf64_Phdr phdr;
u64 phdr_sz = 0, note_off;
+ struct vm_struct *vm;
ehdr_ptr = (Elf64_Ehdr *)elfptr;
@@ -385,6 +386,14 @@ static int __init merge_note_headers_elf
if (!*notes_buf)
return -ENOMEM;
+ /*
+ * Allow users to remap ELF note segment buffer on vmalloc memory using
+ * remap_vmalloc_range.()
+ */
+ vm = find_vm_area(*notes_buf);
+ BUG_ON(!vm);
+ vm->flags |= VM_USERMAP;
+
rc = copy_notes_elf64(ehdr_ptr, *notes_buf);
if (rc < 0)
return rc;
@@ -548,6 +557,7 @@ static int __init merge_note_headers_elf
Elf32_Ehdr *ehdr_ptr;
Elf32_Phdr phdr;
u64 phdr_sz = 0, note_off;
+ struct vm_struct *vm;
ehdr_ptr = (Elf32_Ehdr *)elfptr;
@@ -564,6 +574,14 @@ static int __init merge_note_headers_elf
if (!*notes_buf)
return -ENOMEM;
+ /*
+ * Allow users to remap ELF note segment buffer on vmalloc memory using
+ * remap_vmalloc_range()
+ */
+ vm = find_vm_area(*notes_buf);
+ BUG_ON(!vm);
+ vm->flags |= VM_USERMAP;
+
rc = copy_notes_elf32(ehdr_ptr, *notes_buf);
if (rc < 0)
return rc;
_
Patches currently in -mm which might be from d.hatayama@xxxxxxxxxxxxxx are
origin.patch
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