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kexec: remove never used member destination in kimage

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struct kimage has a member destination which is used to store the real
destination address of each page when load segment from user space buffer
to kernel.  But we never retrieve the value stored in kimage->destination,
so this member variable in kimage and its assignment operation are
redundent code.

I guess for_each_kimage_entry just does the work that kimage->destination
is expected to do.

So in this patch just make a cleanup to remove it.

Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Baoquan He 2015-02-17 13:45:44 -08:00 committed by Linus Torvalds
parent 1df0135588
commit 73d7e3eac0
2 changed files with 0 additions and 6 deletions
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2
include/linux/kexec.h
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@ -122,8 +122,6 @@ struct kimage {
kimage_entry_t *entry; kimage_entry_t *entry;
kimage_entry_t *last_entry; kimage_entry_t *last_entry;
unsigned long destination;
unsigned long start; unsigned long start;
struct page *control_code_page; struct page *control_code_page;
struct page *swap_page; struct page *swap_page;

4
kernel/kexec.c
View File

@ -856,8 +856,6 @@ static int kimage_set_destination(struct kimage *image,
destination &= PAGE_MASK; destination &= PAGE_MASK;
result = kimage_add_entry(image, destination | IND_DESTINATION); result = kimage_add_entry(image, destination | IND_DESTINATION);
if (result == 0)
image->destination = destination;
return result; return result;
} }
@ -869,8 +867,6 @@ static int kimage_add_page(struct kimage *image, unsigned long page)
page &= PAGE_MASK; page &= PAGE_MASK;
result = kimage_add_entry(image, page | IND_SOURCE); result = kimage_add_entry(image, page | IND_SOURCE);
if (result == 0)
image->destination += PAGE_SIZE;
return result; return result;
} }