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Date: Mon, 14 Nov 2011 15:25:35 +0900
From: Kazuya Mio <k-mio@...jp.nec.com>
To: ext4 <linux-ext4@...r.kernel.org>
CC: Theodore Tso <tytso@....edu>, Andreas Dilger <adilger@...ger.ca>
Subject: [PATCH v3 11/11] e4defrag: Remove unnecessary code
Remove unused header include, duplicate code, and so on.
Signed-off-by: Kazuya Mio <k-mio@...jp.nec.com>
---
misc/e4defrag.c | 53 ++++++++++++-----------------------------------------
1 file changed, 12 insertions(+), 41 deletions(-)
diff --git a/misc/e4defrag.c b/misc/e4defrag.c
index 0b4873d..c07a79b 100644
--- a/misc/e4defrag.c
+++ b/misc/e4defrag.c
@@ -20,25 +20,17 @@
#endif
#include "config.h"
-#include <ctype.h>
-#include <dirent.h>
-#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <ftw.h>
-#include <limits.h>
#include <mntent.h>
#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
#include <unistd.h>
#include <linux/fs.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/statfs.h>
-#include <sys/syscall.h>
-#include <sys/vfs.h>
#include "e2p/e2p.h"
#include "ext2fs/ext2_types.h"
@@ -335,15 +327,14 @@ static int is_ext4(const char *file)
strncpy(lost_found_dir, mnt->mnt_dir, PATH_MAX);
}
- endmntent(fp);
- if (strcmp(mnt_type, FS_EXT4) == 0) {
- FREE(mnt_type);
- return 0;
- } else {
- FREE(mnt_type);
+ ret = strcmp(mnt_type, FS_EXT4);
+ if (ret != 0)
PRINT_ERR_MSG(NGMSG_EXT4);
- return -1;
- }
+
+ endmntent(fp);
+ FREE(mnt_type);
+
+ return (ret == 0) ? 0 : -1;
}
/*
@@ -381,9 +372,6 @@ static int page_in_core(int fd, struct move_extent defrag_data,
void *page = NULL;
loff_t offset, end_offset, length;
- if (vec == NULL || *vec != NULL)
- return -1;
-
pagesize = sysconf(_SC_PAGESIZE);
if (pagesize < 0)
return -1;
@@ -505,7 +493,6 @@ static int file_frag_count(int fd)
* ioctl just get file fragment count.
*/
memset(&fiemap_buf, 0, sizeof(struct fiemap));
- fiemap_buf.fm_start = 0;
fiemap_buf.fm_length = FIEMAP_MAX_OFFSET;
fiemap_buf.fm_flags |= FIEMAP_FLAG_SYNC;
@@ -883,7 +870,7 @@ static int call_defrag(int fd, int donor_fd, const char *file,
/* Free pages */
ret = defrag_fadvise(fd, move_data, vec, page_num);
- if (vec) {
+ if (vec != NULL) {
free(vec);
vec = NULL;
}
@@ -1030,14 +1017,6 @@ static int file_defrag(const char *file, const struct stat64 *buf,
if (file_check(fd, file, blk_count) < 0)
goto out;
- if (fsync(fd) < 0) {
- if (mode_flag & DETAIL) {
- PRINT_FILE_NAME(file);
- PRINT_ERR_MSG_WITH_ERRNO("Failed to sync(fsync)");
- }
- goto out;
- }
-
orig_score = e2p_get_fragscore(fd, threshold, EXTENT_MAX_BLKS, &err);
if (err != 0) {
errno = err;
@@ -1216,9 +1195,6 @@ int main(int argc, char *argv[])
struct stat64 buf;
/* Parse arguments */
- if (argc == 1)
- goto out;
-
while ((opt = getopt(argc, argv, "Fv")) != EOF) {
switch (opt) {
case 'F':
@@ -1285,7 +1261,6 @@ int main(int argc, char *argv[])
continue;
}
arg_type = DIRNAME;
- strncpy(dir_name, argv[i], strnlen(argv[i], PATH_MAX));
} else if (S_ISREG(buf.st_mode)) {
/* Regular file */
arg_type = FILENAME;
@@ -1314,17 +1289,16 @@ int main(int argc, char *argv[])
switch (arg_type) {
case DIRNAME: {
- int mount_dir_len = 0;
- mount_dir_len = strnlen(lost_found_dir, PATH_MAX);
+ int mount_dir_len = strnlen(lost_found_dir, PATH_MAX);
strncat(lost_found_dir, "/lost+found",
PATH_MAX - strnlen(lost_found_dir, PATH_MAX));
- /* Not the case("e4defrag mount_piont_dir") */
+ /* Not the case("e4defrag mount_point_dir") */
if (dir_name[mount_dir_len] != '\0') {
/*
- * "e4defrag mount_piont_dir/lost+found"
- * or "e4defrag mount_piont_dir/lost+found/"
+ * "e4defrag mount_point_dir/lost+found"
+ * or "e4defrag mount_point_dir/lost+found/"
*/
if (strncmp(lost_found_dir, dir_name,
strnlen(lost_found_dir,
@@ -1337,9 +1311,6 @@ int main(int argc, char *argv[])
PRINT_FILE_NAME(argv[i]);
continue;
}
-
- /* "e4defrag mount_piont_dir/else_dir" */
- memset(lost_found_dir, 0, PATH_MAX + 1);
}
printf("ext4 defragmentation for directory(%s)\n",
--
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