mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-01-23 02:14:37 +00:00
2e26b36d44
During investigations, it’s much easier to read logs when regions are printed in the start - end format rather than `start/size`. In addition, all page counters and memory sizes are now printed in hexadecimal, as they are hard to read in decimal form. Signed-off-by: Andrei Vagin <avagin@gmail.com>
105 lines
1.8 KiB
C
105 lines
1.8 KiB
C
#include <sys/uio.h>
|
|
#include <fcntl.h>
|
|
#include <linux/falloc.h>
|
|
#include <unistd.h>
|
|
|
|
#include "int.h"
|
|
#include "crtools.h"
|
|
#include "pagemap.h"
|
|
#include "restorer.h"
|
|
|
|
static int cr_dedup_one_pagemap(unsigned long img_id, int flags);
|
|
|
|
int cr_dedup(void)
|
|
{
|
|
int close_ret, ret = 0;
|
|
unsigned long img_id;
|
|
DIR *dirp;
|
|
struct dirent *ent;
|
|
|
|
dirp = opendir(CR_PARENT_LINK);
|
|
if (dirp == NULL) {
|
|
pr_perror("Can't enter previous snapshot folder");
|
|
ret = -1;
|
|
goto err;
|
|
}
|
|
|
|
while (1) {
|
|
errno = 0;
|
|
ent = readdir(dirp);
|
|
if (ent == NULL) {
|
|
if (errno) {
|
|
pr_perror("Failed readdir");
|
|
ret = -1;
|
|
goto err;
|
|
}
|
|
break;
|
|
}
|
|
|
|
ret = sscanf(ent->d_name, "pagemap-%lu.img", &img_id);
|
|
if (ret == 1) {
|
|
pr_info("pid=%lu\n", img_id);
|
|
ret = cr_dedup_one_pagemap(img_id, PR_TASK);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
|
|
ret = sscanf(ent->d_name, "pagemap-shmem-%lu.img", &img_id);
|
|
if (ret == 1) {
|
|
pr_info("shmid=%lu\n", img_id);
|
|
ret = cr_dedup_one_pagemap(img_id, PR_SHMEM);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
err:
|
|
if (dirp) {
|
|
close_ret = closedir(dirp);
|
|
if (close_ret == -1)
|
|
return close_ret;
|
|
}
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
pr_info("Deduplicated\n");
|
|
return 0;
|
|
}
|
|
|
|
static int cr_dedup_one_pagemap(unsigned long img_id, int flags)
|
|
{
|
|
int ret;
|
|
struct page_read pr;
|
|
struct page_read *prp;
|
|
|
|
flags |= PR_MOD;
|
|
ret = open_page_read(img_id, &pr, flags);
|
|
if (ret <= 0)
|
|
return -1;
|
|
|
|
prp = pr.parent;
|
|
if (!prp)
|
|
goto exit;
|
|
|
|
while (1) {
|
|
ret = pr.advance(&pr);
|
|
if (ret <= 0)
|
|
goto exit;
|
|
|
|
pr_debug("dedup iovec %" PRIx64 " - %" PRIx64 "\n",
|
|
pr.pe->vaddr, pr.pe->vaddr + pagemap_len(pr.pe));
|
|
if (!pagemap_in_parent(pr.pe)) {
|
|
ret = dedup_one_iovec(prp, pr.pe->vaddr, pagemap_len(pr.pe));
|
|
if (ret)
|
|
goto exit;
|
|
}
|
|
}
|
|
exit:
|
|
pr.close(&pr);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|