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use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages

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After all that's what they are intended for.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Beulich
2010-10-26 14:22:27 -07:00
committed by Linus Torvalds
parent b647277681
commit 3ecb01df32
5 changed files with 13 additions and 13 deletions
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6
kernel/power/swap.c
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@@ -251,7 +251,7 @@ static int write_page(void *buf, sector_t offset, struct bio **bio_chain)
if (bio_chain) {
src = (void *)__get_free_page(__GFP_WAIT | __GFP_HIGH);
if (src) {
memcpy(src, buf, PAGE_SIZE);
copy_page(src, buf);
} else {
WARN_ON_ONCE(1);
bio_chain = NULL; /* Go synchronous */
@@ -325,7 +325,7 @@ static int swap_write_page(struct swap_map_handle *handle, void *buf,
error = write_page(handle->cur, handle->cur_swap, NULL);
if (error)
goto out;
memset(handle->cur, 0, PAGE_SIZE);
clear_page(handle->cur);
handle->cur_swap = offset;
handle->k = 0;
}
@@ -910,7 +910,7 @@ int swsusp_check(void)
hib_resume_bdev = open_by_devnum(swsusp_resume_device, FMODE_READ);
if (!IS_ERR(hib_resume_bdev)) {
set_blocksize(hib_resume_bdev, PAGE_SIZE);
memset(swsusp_header, 0, PAGE_SIZE);
clear_page(swsusp_header);
error = hib_bio_read_page(swsusp_resume_block,
swsusp_header, NULL);
if (error)