blob: 88b99532b256b20cd4aae772131b39bea93dbffd [file] [log] [blame]
/**
* f2fs_format_utils.c
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Dual licensed under the GPL or LGPL version 2 licenses.
*/
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "f2fs_fs.h"
#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h>
#endif
#ifdef HAVE_LINUX_FALLOC_H
#include <linux/falloc.h>
#endif
int f2fs_trim_device()
{
unsigned long long range[2];
struct stat stat_buf;
if (!config.trim)
return 0;
range[0] = 0;
range[1] = config.total_sectors * DEFAULT_SECTOR_SIZE;
if (fstat(config.fd, &stat_buf) < 0 ) {
MSG(1, "\tError: Failed to get the device stat!!!\n");
return -1;
}
#if defined(WITH_BLKDISCARD) && defined(BLKDISCARD)
MSG(0, "Info: Discarding device\n");
if (S_ISREG(stat_buf.st_mode)) {
#ifdef FALLOC_FL_PUNCH_HOLE
if (fallocate(config.fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
range[0], range[1]) < 0) {
MSG(0, "Info: fallocate(PUNCH_HOLE|KEEP_SIZE) is failed\n");
}
#endif
return 0;
} else if (S_ISBLK(stat_buf.st_mode)) {
if (ioctl(config.fd, BLKDISCARD, &range) < 0) {
MSG(0, "Info: This device doesn't support TRIM\n");
} else {
MSG(0, "Info: Discarded %lu sectors\n",
config.total_sectors);
}
} else
return -1;
#endif
return 0;
}