* [LTP] [PATCH] lib/mem: removed read_file() and write_file()
@ 2013-04-23 3:29 Zhouping Liu
2013-04-23 6:49 ` Wanlong Gao
0 siblings, 1 reply; 3+ messages in thread
From: Zhouping Liu @ 2013-04-23 3:29 UTC (permalink / raw)
To: LTP List
SAFE_FILE_SCANF() and SAFE_FILE_PRINTF() can completely displace
read_file() and write_file(), so removed them.
Signed-off-by: Zhouping Liu <zliu@redhat.com>
---
testcases/kernel/mem/cpuset/cpuset01.c | 3 +-
.../kernel/mem/hugetlb/hugeshmget/hugeshmget03.c | 11 +--
testcases/kernel/mem/include/mem.h | 3 +-
testcases/kernel/mem/lib/mem.c | 87 +++++++---------------
testcases/kernel/mem/oom/oom03.c | 11 ++-
testcases/kernel/mem/oom/oom05.c | 6 +-
6 files changed, 38 insertions(+), 83 deletions(-)
diff --git a/testcases/kernel/mem/cpuset/cpuset01.c b/testcases/kernel/mem/cpuset/cpuset01.c
index 99fbb9c..abba489 100644
--- a/testcases/kernel/mem/cpuset/cpuset01.c
+++ b/testcases/kernel/mem/cpuset/cpuset01.c
@@ -100,8 +100,7 @@ static void testcpuset(void)
write_cpuset_files(CPATH_NEW, "cpus", buf);
read_cpuset_files(CPATH, "mems", mems);
write_cpuset_files(CPATH_NEW, "mems", mems);
- snprintf(buf, BUFSIZ, "%d", getpid());
- write_file(CPATH_NEW "/tasks", buf);
+ SAFE_FILE_PRINTF(cleanup, CPATH_NEW "/tasks", "%d", getpid());
switch (child = fork()) {
case -1:
diff --git a/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c b/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
index 3898618..8cf5cc6 100644
--- a/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
+++ b/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
@@ -113,7 +113,6 @@ int main(int ac, char **av)
void setup(void)
{
long hpage_size;
- char buf[BUFSIZ];
tst_require_root(NULL);
tst_sig(NOFORK, DEF_HANDLER, cleanup);
@@ -125,10 +124,8 @@ void setup(void)
shm_size = hpage_size;
- read_file(PATH_SHMMNI, buf);
- orig_shmmni = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
- snprintf(buf, BUFSIZ, "%ld", hugepages / 2);
- write_file(PATH_SHMMNI, buf);
+ SAFE_FILE_SCANF(NULL, PATH_SHMMNI, "%ld", &orig_shmmni);
+ SAFE_FILE_PRINTF(NULL, PATH_SHMMNI, "%ld", hugepages / 2);
/*
* Use a while loop to create the maximum number of memory segments.
@@ -156,15 +153,13 @@ void setup(void)
void cleanup(void)
{
int i;
- char buf[BUFSIZ];
TEST_CLEANUP;
for (i = 0; i < num_shms; i++)
rm_shm(shm_id_arr[i]);
- snprintf(buf, BUFSIZ, "%ld", orig_shmmni);
- write_file(PATH_SHMMNI, buf);
+ SAFE_FILE_PRINTF(NULL, PATH_SHMMNI, "%ld", orig_shmmni);
set_sys_tune("nr_hugepages", orig_hugepages, 0);
tst_rmdir();
diff --git a/testcases/kernel/mem/include/mem.h b/testcases/kernel/mem/include/mem.h
index 9e96b31..551c73e 100644
--- a/testcases/kernel/mem/include/mem.h
+++ b/testcases/kernel/mem/include/mem.h
@@ -67,6 +67,7 @@ void ksm_usage(void);
#define CPATH_NEW CPATH "/1"
#define MEMCG_PATH "/dev/cgroup"
#define MEMCG_PATH_NEW MEMCG_PATH "/1"
+#define MEMCG_LIMIT MEMCG_PATH_NEW "/memory.limit_in_bytes"
#define MEMCG_SW_LIMIT MEMCG_PATH_NEW "/memory.memsw.limit_in_bytes"
#if HAVE_SYS_EVENTFD_H
#define PATH_OOMCTRL MEMCG_PATH_NEW "/memory.oom_control"
@@ -85,8 +86,6 @@ int path_exist(const char *path, ...);
long read_meminfo(char *item);
void set_sys_tune(char *sys_file, long tune, int check);
long get_sys_tune(char *sys_file);
-void write_file(char *filename, char *buf);
-void read_file(char *filename, char *retbuf);
void cleanup(void);
void setup(void);
diff --git a/testcases/kernel/mem/lib/mem.c b/testcases/kernel/mem/lib/mem.c
index da98552..bc86021 100644
--- a/testcases/kernel/mem/lib/mem.c
+++ b/testcases/kernel/mem/lib/mem.c
@@ -157,13 +157,11 @@ void testoom(int mempolicy, int lite)
static void check(char *path, long int value)
{
- FILE *fp;
- char buf[BUFSIZ], fullpath[BUFSIZ];
+ char fullpath[BUFSIZ];
long actual_val;
snprintf(fullpath, BUFSIZ, "%s%s", PATH_KSM, path);
- read_file(fullpath, buf);
- actual_val = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
+ SAFE_FILE_SCANF(cleanup, fullpath, "%ld", &actual_val);
tst_resm(TINFO, "%s is %ld.", path, actual_val);
if (actual_val != value)
@@ -172,7 +170,6 @@ static void check(char *path, long int value)
static void wait_ksmd_done(void)
{
- char buf[BUFSIZ];
long pages_shared, pages_sharing, pages_volatile, pages_unshared;
long old_pages_shared = 0, old_pages_sharing = 0;
long old_pages_volatile = 0, old_pages_unshared = 0;
@@ -182,17 +179,17 @@ static void wait_ksmd_done(void)
sleep(10);
count++;
- read_file(PATH_KSM "pages_shared", buf);
- pages_shared = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
+ SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_shared",
+ "%ld", &pages_shared);
- read_file(PATH_KSM "pages_sharing", buf);
- pages_sharing = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
+ SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_sharing",
+ "%ld", &pages_sharing);
- read_file(PATH_KSM "pages_volatile", buf);
- pages_volatile = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
+ SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_volatile",
+ "%ld", &pages_volatile);
- read_file(PATH_KSM "pages_unshared", buf);
- pages_unshared = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
+ SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_unshared",
+ "%ld", &pages_unshared);
if (pages_shared != old_pages_shared ||
pages_sharing != old_pages_sharing ||
@@ -254,13 +251,9 @@ static void verify(char **memory, char value, int proc,
void write_memcg(void)
{
- char buf[BUFSIZ], mem[BUFSIZ];
-
- snprintf(mem, BUFSIZ, "%ld", TESTMEM);
- write_file(MEMCG_PATH_NEW "/memory.limit_in_bytes", mem);
+ SAFE_FILE_PRINTF(NULL, MEMCG_LIMIT, "%ld", TESTMEM);
- snprintf(buf, BUFSIZ, "%d", getpid());
- write_file(MEMCG_PATH_NEW "/tasks", buf);
+ SAFE_FILE_PRINTF(NULL, MEMCG_PATH_NEW "/tasks", "%d", getpid());
}
static struct ksm_merge_data {
@@ -377,7 +370,6 @@ static void resume_ksm_children(int *child, int num)
void create_same_memory(int size, int num, int unit)
{
- char buf[BUFSIZ];
int i, j, status, *child;
unsigned long ps, pages;
struct ksm_merge_data **ksm_data;
@@ -437,10 +429,10 @@ void create_same_memory(int size, int num, int unit)
stop_ksm_children(child, num);
tst_resm(TINFO, "KSM merging...");
- write_file(PATH_KSM "run", "1");
- snprintf(buf, BUFSIZ, "%ld", size * pages * num);
- write_file(PATH_KSM "pages_to_scan", buf);
- write_file(PATH_KSM "sleep_millisecs", "0");
+ SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "1");
+ SAFE_FILE_PRINTF(cleanup, PATH_KSM "pages_to_scan", "%ld",
+ size * pages *num);
+ SAFE_FILE_PRINTF(cleanup, PATH_KSM "sleep_millisecs", "0");
resume_ksm_children(child, num);
group_check(1, 2, size * num * pages - 2, 0, 0, 0, size * pages * num);
@@ -460,13 +452,13 @@ void create_same_memory(int size, int num, int unit)
stop_ksm_children(child, num);
tst_resm(TINFO, "KSM unmerging...");
- write_file(PATH_KSM "run", "2");
+ SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "2");
resume_ksm_children(child, num);
group_check(2, 0, 0, 0, 0, 0, size * pages * num);
tst_resm(TINFO, "stop KSM.");
- write_file(PATH_KSM "run", "0");
+ SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "0");
group_check(0, 0, 0, 0, 0, 0, size * pages * num);
while (waitpid(-1, &status, WUNTRACED | WCONTINUED) > 0)
@@ -624,7 +616,6 @@ void test_transparent_hugepage(int nr_children, int nr_thps,
{
unsigned long hugepagesize, memfree;
int i, *pids, ret, status;
- char path[BUFSIZ];
if (mempolicy)
set_global_mempolicy(mempolicy);
@@ -803,8 +794,7 @@ void write_cpusets(long nd)
gather_node_cpus(cpus, nd);
write_cpuset_files(CPATH_NEW, "cpus", cpus);
- snprintf(buf, BUFSIZ, "%d", getpid());
- write_file(CPATH_NEW "/tasks", buf);
+ SAFE_FILE_PRINTF(NULL, CPATH_NEW "/tasks", "%d", getpid());
}
void umount_mem(char *path, char *path_new)
@@ -932,13 +922,12 @@ long read_meminfo(char *item)
void set_sys_tune(char *sys_file, long tune, int check)
{
long val;
- char buf[BUFSIZ], path[BUFSIZ];
+ char path[BUFSIZ];
tst_resm(TINFO, "set %s to %ld", sys_file, tune);
snprintf(path, BUFSIZ, "%s%s", PATH_SYSVM, sys_file);
- snprintf(buf, BUFSIZ, "%ld", tune);
- write_file(path, buf);
+ SAFE_FILE_PRINTF(NULL, path, "%ld", tune);
if (check) {
val = get_sys_tune(sys_file);
@@ -950,44 +939,20 @@ void set_sys_tune(char *sys_file, long tune, int check)
long get_sys_tune(char *sys_file)
{
- char buf[BUFSIZ], path[BUFSIZ];
+ char path[BUFSIZ];
+ long tune;
snprintf(path, BUFSIZ, "%s%s", PATH_SYSVM, sys_file);
- read_file(path, buf);
- return SAFE_STRTOL(cleanup, buf, LONG_MIN, LONG_MAX);
-}
-
-void write_file(char *filename, char *buf)
-{
- int fd;
+ SAFE_FILE_SCANF(NULL, path, "%ld", &tune);
- fd = open(filename, O_WRONLY);
- if (fd == -1)
- tst_brkm(TBROK | TERRNO, cleanup, "open %s", filename);
- if (write(fd, buf, strlen(buf)) != strlen(buf))
- tst_brkm(TBROK | TERRNO, cleanup, "write %s", filename);
- close(fd);
-}
-
-void read_file(char *filename, char *retbuf)
-{
- int fd;
-
- fd = open(filename, O_RDONLY);
- if (fd == -1)
- tst_brkm(TBROK | TERRNO, cleanup, "open %s", filename);
- if (read(fd, retbuf, BUFSIZ) < 0)
- tst_brkm(TBROK | TERRNO, cleanup, "read %s", filename);
- close(fd);
+ return tune;
}
void update_shm_size(size_t * shm_size)
{
- char buf[BUFSIZ];
size_t shmmax;
- read_file(PATH_SHMMAX, buf);
- shmmax = SAFE_STRTOUL(cleanup, buf, 0, ULONG_MAX);
+ SAFE_FILE_SCANF(cleanup, PATH_SHMMAX, "%ld", shmmax);
if (*shm_size > shmmax) {
tst_resm(TINFO, "Set shm_size to shmmax: %ld", shmmax);
*shm_size = shmmax;
diff --git a/testcases/kernel/mem/oom/oom03.c b/testcases/kernel/mem/oom/oom03.c
index 124e95f..8faa3cd 100644
--- a/testcases/kernel/mem/oom/oom03.c
+++ b/testcases/kernel/mem/oom/oom03.c
@@ -48,7 +48,6 @@ int main(int argc, char *argv[])
{
char *msg;
int lc;
- char buf[BUFSIZ], mem[BUFSIZ];
msg = parse_opts(argc, argv, NULL, NULL);
if (msg != NULL)
@@ -63,11 +62,10 @@ int main(int argc, char *argv[])
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
- snprintf(buf, BUFSIZ, "%d", getpid());
- write_file(MEMCG_PATH_NEW "/tasks", buf);
+ SAFE_FILE_PRINTF(cleanup, MEMCG_PATH_NEW "/tasks",
+ "%d", getpid());
+ SAFE_FILE_PRINTF(cleanup, MEMCG_LIMIT, "%ld", TESTMEM);
- snprintf(mem, BUFSIZ, "%ld", TESTMEM);
- write_file(MEMCG_PATH_NEW "/memory.limit_in_bytes", mem);
testoom(0, 0);
if (access(MEMCG_SW_LIMIT, F_OK) == -1) {
@@ -77,7 +75,8 @@ int main(int argc, char *argv[])
else
tst_brkm(TBROK | TERRNO, cleanup, "access");
} else {
- write_file(MEMCG_SW_LIMIT, mem);
+ SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT,
+ "%ld", TESTMEM);
testoom(0, 1);
}
diff --git a/testcases/kernel/mem/oom/oom05.c b/testcases/kernel/mem/oom/oom05.c
index cd45f08..15feba5 100644
--- a/testcases/kernel/mem/oom/oom05.c
+++ b/testcases/kernel/mem/oom/oom05.c
@@ -51,7 +51,6 @@ int main(int argc, char *argv[])
char *msg;
int lc;
int swap_acc_on = 1;
- char mem[BUFSIZ];
msg = parse_opts(argc, argv, NULL, NULL);
if (msg != NULL)
@@ -93,13 +92,12 @@ int main(int argc, char *argv[])
if (swap_acc_on) {
tst_resm(TINFO, "OOM on CPUSET & MEMCG with "
"special memswap limitation:");
- snprintf(mem, BUFSIZ, "%ld", TESTMEM);
- write_file(MEMCG_SW_LIMIT, mem);
+ SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT, "%ld", TESTMEM);
testoom(0, 0);
tst_resm(TINFO, "OOM on CPUSET & MEMCG with "
"disabled memswap limitation:");
- write_file(MEMCG_SW_LIMIT, "-1");
+ SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT, "-1");
testoom(0, 0);
}
}
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [LTP] [PATCH] lib/mem: removed read_file() and write_file()
2013-04-23 3:29 [LTP] [PATCH] lib/mem: removed read_file() and write_file() Zhouping Liu
@ 2013-04-23 6:49 ` Wanlong Gao
2013-04-23 7:11 ` Zhouping Liu
0 siblings, 1 reply; 3+ messages in thread
From: Wanlong Gao @ 2013-04-23 6:49 UTC (permalink / raw)
To: Zhouping Liu; +Cc: LTP List
On 04/23/2013 11:29 AM, Zhouping Liu wrote:
> SAFE_FILE_SCANF() and SAFE_FILE_PRINTF() can completely displace
> read_file() and write_file(), so removed them.
>
> Signed-off-by: Zhouping Liu <zliu@redhat.com>
> ---
> testcases/kernel/mem/cpuset/cpuset01.c | 3 +-
> .../kernel/mem/hugetlb/hugeshmget/hugeshmget03.c | 11 +--
> testcases/kernel/mem/include/mem.h | 3 +-
> testcases/kernel/mem/lib/mem.c | 87 +++++++---------------
> testcases/kernel/mem/oom/oom03.c | 11 ++-
> testcases/kernel/mem/oom/oom05.c | 6 +-
> 6 files changed, 38 insertions(+), 83 deletions(-)
>
> diff --git a/testcases/kernel/mem/cpuset/cpuset01.c b/testcases/kernel/mem/cpuset/cpuset01.c
> index 99fbb9c..abba489 100644
> --- a/testcases/kernel/mem/cpuset/cpuset01.c
> +++ b/testcases/kernel/mem/cpuset/cpuset01.c
> @@ -100,8 +100,7 @@ static void testcpuset(void)
> write_cpuset_files(CPATH_NEW, "cpus", buf);
> read_cpuset_files(CPATH, "mems", mems);
> write_cpuset_files(CPATH_NEW, "mems", mems);
> - snprintf(buf, BUFSIZ, "%d", getpid());
> - write_file(CPATH_NEW "/tasks", buf);
> + SAFE_FILE_PRINTF(cleanup, CPATH_NEW "/tasks", "%d", getpid());
>
> switch (child = fork()) {
> case -1:
> diff --git a/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c b/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
> index 3898618..8cf5cc6 100644
> --- a/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
> +++ b/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
> @@ -113,7 +113,6 @@ int main(int ac, char **av)
> void setup(void)
> {
> long hpage_size;
> - char buf[BUFSIZ];
>
> tst_require_root(NULL);
> tst_sig(NOFORK, DEF_HANDLER, cleanup);
> @@ -125,10 +124,8 @@ void setup(void)
>
> shm_size = hpage_size;
>
> - read_file(PATH_SHMMNI, buf);
> - orig_shmmni = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> - snprintf(buf, BUFSIZ, "%ld", hugepages / 2);
> - write_file(PATH_SHMMNI, buf);
> + SAFE_FILE_SCANF(NULL, PATH_SHMMNI, "%ld", &orig_shmmni);
> + SAFE_FILE_PRINTF(NULL, PATH_SHMMNI, "%ld", hugepages / 2);
>
> /*
> * Use a while loop to create the maximum number of memory segments.
> @@ -156,15 +153,13 @@ void setup(void)
> void cleanup(void)
> {
> int i;
> - char buf[BUFSIZ];
>
> TEST_CLEANUP;
>
> for (i = 0; i < num_shms; i++)
> rm_shm(shm_id_arr[i]);
>
> - snprintf(buf, BUFSIZ, "%ld", orig_shmmni);
> - write_file(PATH_SHMMNI, buf);
> + SAFE_FILE_PRINTF(NULL, PATH_SHMMNI, "%ld", orig_shmmni);
> set_sys_tune("nr_hugepages", orig_hugepages, 0);
>
> tst_rmdir();
> diff --git a/testcases/kernel/mem/include/mem.h b/testcases/kernel/mem/include/mem.h
> index 9e96b31..551c73e 100644
> --- a/testcases/kernel/mem/include/mem.h
> +++ b/testcases/kernel/mem/include/mem.h
> @@ -67,6 +67,7 @@ void ksm_usage(void);
> #define CPATH_NEW CPATH "/1"
> #define MEMCG_PATH "/dev/cgroup"
> #define MEMCG_PATH_NEW MEMCG_PATH "/1"
> +#define MEMCG_LIMIT MEMCG_PATH_NEW "/memory.limit_in_bytes"
> #define MEMCG_SW_LIMIT MEMCG_PATH_NEW "/memory.memsw.limit_in_bytes"
> #if HAVE_SYS_EVENTFD_H
> #define PATH_OOMCTRL MEMCG_PATH_NEW "/memory.oom_control"
> @@ -85,8 +86,6 @@ int path_exist(const char *path, ...);
> long read_meminfo(char *item);
> void set_sys_tune(char *sys_file, long tune, int check);
> long get_sys_tune(char *sys_file);
> -void write_file(char *filename, char *buf);
> -void read_file(char *filename, char *retbuf);
> void cleanup(void);
> void setup(void);
>
> diff --git a/testcases/kernel/mem/lib/mem.c b/testcases/kernel/mem/lib/mem.c
> index da98552..bc86021 100644
> --- a/testcases/kernel/mem/lib/mem.c
> +++ b/testcases/kernel/mem/lib/mem.c
> @@ -157,13 +157,11 @@ void testoom(int mempolicy, int lite)
>
> static void check(char *path, long int value)
> {
> - FILE *fp;
> - char buf[BUFSIZ], fullpath[BUFSIZ];
> + char fullpath[BUFSIZ];
> long actual_val;
>
> snprintf(fullpath, BUFSIZ, "%s%s", PATH_KSM, path);
Can this be snprintf(fullpath, BUFSIZ, PATH_KSM "%s", path);?
> - read_file(fullpath, buf);
> - actual_val = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> + SAFE_FILE_SCANF(cleanup, fullpath, "%ld", &actual_val);
>
> tst_resm(TINFO, "%s is %ld.", path, actual_val);
> if (actual_val != value)
> @@ -172,7 +170,6 @@ static void check(char *path, long int value)
>
> static void wait_ksmd_done(void)
> {
> - char buf[BUFSIZ];
> long pages_shared, pages_sharing, pages_volatile, pages_unshared;
> long old_pages_shared = 0, old_pages_sharing = 0;
> long old_pages_volatile = 0, old_pages_unshared = 0;
> @@ -182,17 +179,17 @@ static void wait_ksmd_done(void)
> sleep(10);
> count++;
>
> - read_file(PATH_KSM "pages_shared", buf);
> - pages_shared = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_shared",
> + "%ld", &pages_shared);
>
> - read_file(PATH_KSM "pages_sharing", buf);
> - pages_sharing = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_sharing",
> + "%ld", &pages_sharing);
>
> - read_file(PATH_KSM "pages_volatile", buf);
> - pages_volatile = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_volatile",
> + "%ld", &pages_volatile);
>
> - read_file(PATH_KSM "pages_unshared", buf);
> - pages_unshared = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_unshared",
> + "%ld", &pages_unshared);
>
> if (pages_shared != old_pages_shared ||
> pages_sharing != old_pages_sharing ||
> @@ -254,13 +251,9 @@ static void verify(char **memory, char value, int proc,
>
> void write_memcg(void)
> {
> - char buf[BUFSIZ], mem[BUFSIZ];
> -
> - snprintf(mem, BUFSIZ, "%ld", TESTMEM);
> - write_file(MEMCG_PATH_NEW "/memory.limit_in_bytes", mem);
> + SAFE_FILE_PRINTF(NULL, MEMCG_LIMIT, "%ld", TESTMEM);
>
> - snprintf(buf, BUFSIZ, "%d", getpid());
> - write_file(MEMCG_PATH_NEW "/tasks", buf);
> + SAFE_FILE_PRINTF(NULL, MEMCG_PATH_NEW "/tasks", "%d", getpid());
> }
>
> static struct ksm_merge_data {
> @@ -377,7 +370,6 @@ static void resume_ksm_children(int *child, int num)
>
> void create_same_memory(int size, int num, int unit)
> {
> - char buf[BUFSIZ];
> int i, j, status, *child;
> unsigned long ps, pages;
> struct ksm_merge_data **ksm_data;
> @@ -437,10 +429,10 @@ void create_same_memory(int size, int num, int unit)
> stop_ksm_children(child, num);
>
> tst_resm(TINFO, "KSM merging...");
> - write_file(PATH_KSM "run", "1");
> - snprintf(buf, BUFSIZ, "%ld", size * pages * num);
> - write_file(PATH_KSM "pages_to_scan", buf);
> - write_file(PATH_KSM "sleep_millisecs", "0");
> + SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "1");
> + SAFE_FILE_PRINTF(cleanup, PATH_KSM "pages_to_scan", "%ld",
> + size * pages *num);
> + SAFE_FILE_PRINTF(cleanup, PATH_KSM "sleep_millisecs", "0");
>
> resume_ksm_children(child, num);
> group_check(1, 2, size * num * pages - 2, 0, 0, 0, size * pages * num);
> @@ -460,13 +452,13 @@ void create_same_memory(int size, int num, int unit)
> stop_ksm_children(child, num);
>
> tst_resm(TINFO, "KSM unmerging...");
> - write_file(PATH_KSM "run", "2");
> + SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "2");
>
> resume_ksm_children(child, num);
> group_check(2, 0, 0, 0, 0, 0, size * pages * num);
>
> tst_resm(TINFO, "stop KSM.");
> - write_file(PATH_KSM "run", "0");
> + SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "0");
> group_check(0, 0, 0, 0, 0, 0, size * pages * num);
>
> while (waitpid(-1, &status, WUNTRACED | WCONTINUED) > 0)
> @@ -624,7 +616,6 @@ void test_transparent_hugepage(int nr_children, int nr_thps,
> {
> unsigned long hugepagesize, memfree;
> int i, *pids, ret, status;
> - char path[BUFSIZ];
>
> if (mempolicy)
> set_global_mempolicy(mempolicy);
> @@ -803,8 +794,7 @@ void write_cpusets(long nd)
> gather_node_cpus(cpus, nd);
> write_cpuset_files(CPATH_NEW, "cpus", cpus);
>
> - snprintf(buf, BUFSIZ, "%d", getpid());
> - write_file(CPATH_NEW "/tasks", buf);
> + SAFE_FILE_PRINTF(NULL, CPATH_NEW "/tasks", "%d", getpid());
> }
>
> void umount_mem(char *path, char *path_new)
> @@ -932,13 +922,12 @@ long read_meminfo(char *item)
> void set_sys_tune(char *sys_file, long tune, int check)
> {
> long val;
> - char buf[BUFSIZ], path[BUFSIZ];
> + char path[BUFSIZ];
>
> tst_resm(TINFO, "set %s to %ld", sys_file, tune);
>
> snprintf(path, BUFSIZ, "%s%s", PATH_SYSVM, sys_file);
ditto?
> - snprintf(buf, BUFSIZ, "%ld", tune);
> - write_file(path, buf);
> + SAFE_FILE_PRINTF(NULL, path, "%ld", tune);
>
> if (check) {
> val = get_sys_tune(sys_file);
> @@ -950,44 +939,20 @@ void set_sys_tune(char *sys_file, long tune, int check)
>
> long get_sys_tune(char *sys_file)
> {
> - char buf[BUFSIZ], path[BUFSIZ];
> + char path[BUFSIZ];
> + long tune;
>
> snprintf(path, BUFSIZ, "%s%s", PATH_SYSVM, sys_file);
ditto?
> - read_file(path, buf);
> - return SAFE_STRTOL(cleanup, buf, LONG_MIN, LONG_MAX);
> -}
> -
> -void write_file(char *filename, char *buf)
> -{
> - int fd;
> + SAFE_FILE_SCANF(NULL, path, "%ld", &tune);
>
> - fd = open(filename, O_WRONLY);
> - if (fd == -1)
> - tst_brkm(TBROK | TERRNO, cleanup, "open %s", filename);
> - if (write(fd, buf, strlen(buf)) != strlen(buf))
> - tst_brkm(TBROK | TERRNO, cleanup, "write %s", filename);
> - close(fd);
> -}
> -
> -void read_file(char *filename, char *retbuf)
> -{
> - int fd;
> -
> - fd = open(filename, O_RDONLY);
> - if (fd == -1)
> - tst_brkm(TBROK | TERRNO, cleanup, "open %s", filename);
> - if (read(fd, retbuf, BUFSIZ) < 0)
> - tst_brkm(TBROK | TERRNO, cleanup, "read %s", filename);
> - close(fd);
> + return tune;
> }
>
> void update_shm_size(size_t * shm_size)
> {
> - char buf[BUFSIZ];
> size_t shmmax;
>
> - read_file(PATH_SHMMAX, buf);
> - shmmax = SAFE_STRTOUL(cleanup, buf, 0, ULONG_MAX);
> + SAFE_FILE_SCANF(cleanup, PATH_SHMMAX, "%ld", shmmax);
&shmmax?
Thanks,
Wanlong Gao
> if (*shm_size > shmmax) {
> tst_resm(TINFO, "Set shm_size to shmmax: %ld", shmmax);
> *shm_size = shmmax;
> diff --git a/testcases/kernel/mem/oom/oom03.c b/testcases/kernel/mem/oom/oom03.c
> index 124e95f..8faa3cd 100644
> --- a/testcases/kernel/mem/oom/oom03.c
> +++ b/testcases/kernel/mem/oom/oom03.c
> @@ -48,7 +48,6 @@ int main(int argc, char *argv[])
> {
> char *msg;
> int lc;
> - char buf[BUFSIZ], mem[BUFSIZ];
>
> msg = parse_opts(argc, argv, NULL, NULL);
> if (msg != NULL)
> @@ -63,11 +62,10 @@ int main(int argc, char *argv[])
> for (lc = 0; TEST_LOOPING(lc); lc++) {
> tst_count = 0;
>
> - snprintf(buf, BUFSIZ, "%d", getpid());
> - write_file(MEMCG_PATH_NEW "/tasks", buf);
> + SAFE_FILE_PRINTF(cleanup, MEMCG_PATH_NEW "/tasks",
> + "%d", getpid());
> + SAFE_FILE_PRINTF(cleanup, MEMCG_LIMIT, "%ld", TESTMEM);
>
> - snprintf(mem, BUFSIZ, "%ld", TESTMEM);
> - write_file(MEMCG_PATH_NEW "/memory.limit_in_bytes", mem);
> testoom(0, 0);
>
> if (access(MEMCG_SW_LIMIT, F_OK) == -1) {
> @@ -77,7 +75,8 @@ int main(int argc, char *argv[])
> else
> tst_brkm(TBROK | TERRNO, cleanup, "access");
> } else {
> - write_file(MEMCG_SW_LIMIT, mem);
> + SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT,
> + "%ld", TESTMEM);
> testoom(0, 1);
> }
>
> diff --git a/testcases/kernel/mem/oom/oom05.c b/testcases/kernel/mem/oom/oom05.c
> index cd45f08..15feba5 100644
> --- a/testcases/kernel/mem/oom/oom05.c
> +++ b/testcases/kernel/mem/oom/oom05.c
> @@ -51,7 +51,6 @@ int main(int argc, char *argv[])
> char *msg;
> int lc;
> int swap_acc_on = 1;
> - char mem[BUFSIZ];
>
> msg = parse_opts(argc, argv, NULL, NULL);
> if (msg != NULL)
> @@ -93,13 +92,12 @@ int main(int argc, char *argv[])
> if (swap_acc_on) {
> tst_resm(TINFO, "OOM on CPUSET & MEMCG with "
> "special memswap limitation:");
> - snprintf(mem, BUFSIZ, "%ld", TESTMEM);
> - write_file(MEMCG_SW_LIMIT, mem);
> + SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT, "%ld", TESTMEM);
> testoom(0, 0);
>
> tst_resm(TINFO, "OOM on CPUSET & MEMCG with "
> "disabled memswap limitation:");
> - write_file(MEMCG_SW_LIMIT, "-1");
> + SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT, "-1");
> testoom(0, 0);
> }
> }
>
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [LTP] [PATCH] lib/mem: removed read_file() and write_file()
2013-04-23 6:49 ` Wanlong Gao
@ 2013-04-23 7:11 ` Zhouping Liu
0 siblings, 0 replies; 3+ messages in thread
From: Zhouping Liu @ 2013-04-23 7:11 UTC (permalink / raw)
To: gaowanlong; +Cc: LTP List
----- Original Message -----
> From: "Wanlong Gao" <gaowanlong@cn.fujitsu.com>
> To: "Zhouping Liu" <zliu@redhat.com>
> Cc: "LTP List" <ltp-list@lists.sourceforge.net>
> Sent: Tuesday, April 23, 2013 2:49:09 PM
> Subject: Re: [LTP] [PATCH] lib/mem: removed read_file() and write_file()
>
> On 04/23/2013 11:29 AM, Zhouping Liu wrote:
> > SAFE_FILE_SCANF() and SAFE_FILE_PRINTF() can completely displace
> > read_file() and write_file(), so removed them.
> >
> > Signed-off-by: Zhouping Liu <zliu@redhat.com>
> > ---
> > testcases/kernel/mem/cpuset/cpuset01.c | 3 +-
> > .../kernel/mem/hugetlb/hugeshmget/hugeshmget03.c | 11 +--
> > testcases/kernel/mem/include/mem.h | 3 +-
> > testcases/kernel/mem/lib/mem.c | 87
> > +++++++---------------
> > testcases/kernel/mem/oom/oom03.c | 11 ++-
> > testcases/kernel/mem/oom/oom05.c | 6 +-
> > 6 files changed, 38 insertions(+), 83 deletions(-)
> >
> > diff --git a/testcases/kernel/mem/cpuset/cpuset01.c
> > b/testcases/kernel/mem/cpuset/cpuset01.c
> > index 99fbb9c..abba489 100644
> > --- a/testcases/kernel/mem/cpuset/cpuset01.c
> > +++ b/testcases/kernel/mem/cpuset/cpuset01.c
> > @@ -100,8 +100,7 @@ static void testcpuset(void)
> > write_cpuset_files(CPATH_NEW, "cpus", buf);
> > read_cpuset_files(CPATH, "mems", mems);
> > write_cpuset_files(CPATH_NEW, "mems", mems);
> > - snprintf(buf, BUFSIZ, "%d", getpid());
> > - write_file(CPATH_NEW "/tasks", buf);
> > + SAFE_FILE_PRINTF(cleanup, CPATH_NEW "/tasks", "%d", getpid());
> >
> > switch (child = fork()) {
> > case -1:
> > diff --git a/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
> > b/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
> > index 3898618..8cf5cc6 100644
> > --- a/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
> > +++ b/testcases/kernel/mem/hugetlb/hugeshmget/hugeshmget03.c
> > @@ -113,7 +113,6 @@ int main(int ac, char **av)
> > void setup(void)
> > {
> > long hpage_size;
> > - char buf[BUFSIZ];
> >
> > tst_require_root(NULL);
> > tst_sig(NOFORK, DEF_HANDLER, cleanup);
> > @@ -125,10 +124,8 @@ void setup(void)
> >
> > shm_size = hpage_size;
> >
> > - read_file(PATH_SHMMNI, buf);
> > - orig_shmmni = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> > - snprintf(buf, BUFSIZ, "%ld", hugepages / 2);
> > - write_file(PATH_SHMMNI, buf);
> > + SAFE_FILE_SCANF(NULL, PATH_SHMMNI, "%ld", &orig_shmmni);
> > + SAFE_FILE_PRINTF(NULL, PATH_SHMMNI, "%ld", hugepages / 2);
> >
> > /*
> > * Use a while loop to create the maximum number of memory segments.
> > @@ -156,15 +153,13 @@ void setup(void)
> > void cleanup(void)
> > {
> > int i;
> > - char buf[BUFSIZ];
> >
> > TEST_CLEANUP;
> >
> > for (i = 0; i < num_shms; i++)
> > rm_shm(shm_id_arr[i]);
> >
> > - snprintf(buf, BUFSIZ, "%ld", orig_shmmni);
> > - write_file(PATH_SHMMNI, buf);
> > + SAFE_FILE_PRINTF(NULL, PATH_SHMMNI, "%ld", orig_shmmni);
> > set_sys_tune("nr_hugepages", orig_hugepages, 0);
> >
> > tst_rmdir();
> > diff --git a/testcases/kernel/mem/include/mem.h
> > b/testcases/kernel/mem/include/mem.h
> > index 9e96b31..551c73e 100644
> > --- a/testcases/kernel/mem/include/mem.h
> > +++ b/testcases/kernel/mem/include/mem.h
> > @@ -67,6 +67,7 @@ void ksm_usage(void);
> > #define CPATH_NEW CPATH "/1"
> > #define MEMCG_PATH "/dev/cgroup"
> > #define MEMCG_PATH_NEW MEMCG_PATH "/1"
> > +#define MEMCG_LIMIT MEMCG_PATH_NEW "/memory.limit_in_bytes"
> > #define MEMCG_SW_LIMIT MEMCG_PATH_NEW "/memory.memsw.limit_in_bytes"
> > #if HAVE_SYS_EVENTFD_H
> > #define PATH_OOMCTRL MEMCG_PATH_NEW "/memory.oom_control"
> > @@ -85,8 +86,6 @@ int path_exist(const char *path, ...);
> > long read_meminfo(char *item);
> > void set_sys_tune(char *sys_file, long tune, int check);
> > long get_sys_tune(char *sys_file);
> > -void write_file(char *filename, char *buf);
> > -void read_file(char *filename, char *retbuf);
> > void cleanup(void);
> > void setup(void);
> >
> > diff --git a/testcases/kernel/mem/lib/mem.c
> > b/testcases/kernel/mem/lib/mem.c
> > index da98552..bc86021 100644
> > --- a/testcases/kernel/mem/lib/mem.c
> > +++ b/testcases/kernel/mem/lib/mem.c
> > @@ -157,13 +157,11 @@ void testoom(int mempolicy, int lite)
> >
> > static void check(char *path, long int value)
> > {
> > - FILE *fp;
> > - char buf[BUFSIZ], fullpath[BUFSIZ];
> > + char fullpath[BUFSIZ];
> > long actual_val;
> >
> > snprintf(fullpath, BUFSIZ, "%s%s", PATH_KSM, path);
>
> Can this be snprintf(fullpath, BUFSIZ, PATH_KSM "%s", path);?
Yes, it can be changed as the above, updated it on v2.
>
>
> > - read_file(fullpath, buf);
> > - actual_val = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> > + SAFE_FILE_SCANF(cleanup, fullpath, "%ld", &actual_val);
> >
> > tst_resm(TINFO, "%s is %ld.", path, actual_val);
> > if (actual_val != value)
> > @@ -172,7 +170,6 @@ static void check(char *path, long int value)
> >
> > static void wait_ksmd_done(void)
> > {
> > - char buf[BUFSIZ];
> > long pages_shared, pages_sharing, pages_volatile, pages_unshared;
> > long old_pages_shared = 0, old_pages_sharing = 0;
> > long old_pages_volatile = 0, old_pages_unshared = 0;
> > @@ -182,17 +179,17 @@ static void wait_ksmd_done(void)
> > sleep(10);
> > count++;
> >
> > - read_file(PATH_KSM "pages_shared", buf);
> > - pages_shared = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> > + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_shared",
> > + "%ld", &pages_shared);
> >
> > - read_file(PATH_KSM "pages_sharing", buf);
> > - pages_sharing = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> > + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_sharing",
> > + "%ld", &pages_sharing);
> >
> > - read_file(PATH_KSM "pages_volatile", buf);
> > - pages_volatile = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> > + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_volatile",
> > + "%ld", &pages_volatile);
> >
> > - read_file(PATH_KSM "pages_unshared", buf);
> > - pages_unshared = SAFE_STRTOL(cleanup, buf, 0, LONG_MAX);
> > + SAFE_FILE_SCANF(cleanup, PATH_KSM "pages_unshared",
> > + "%ld", &pages_unshared);
> >
> > if (pages_shared != old_pages_shared ||
> > pages_sharing != old_pages_sharing ||
> > @@ -254,13 +251,9 @@ static void verify(char **memory, char value, int
> > proc,
> >
> > void write_memcg(void)
> > {
> > - char buf[BUFSIZ], mem[BUFSIZ];
> > -
> > - snprintf(mem, BUFSIZ, "%ld", TESTMEM);
> > - write_file(MEMCG_PATH_NEW "/memory.limit_in_bytes", mem);
> > + SAFE_FILE_PRINTF(NULL, MEMCG_LIMIT, "%ld", TESTMEM);
> >
> > - snprintf(buf, BUFSIZ, "%d", getpid());
> > - write_file(MEMCG_PATH_NEW "/tasks", buf);
> > + SAFE_FILE_PRINTF(NULL, MEMCG_PATH_NEW "/tasks", "%d", getpid());
> > }
> >
> > static struct ksm_merge_data {
> > @@ -377,7 +370,6 @@ static void resume_ksm_children(int *child, int num)
> >
> > void create_same_memory(int size, int num, int unit)
> > {
> > - char buf[BUFSIZ];
> > int i, j, status, *child;
> > unsigned long ps, pages;
> > struct ksm_merge_data **ksm_data;
> > @@ -437,10 +429,10 @@ void create_same_memory(int size, int num, int unit)
> > stop_ksm_children(child, num);
> >
> > tst_resm(TINFO, "KSM merging...");
> > - write_file(PATH_KSM "run", "1");
> > - snprintf(buf, BUFSIZ, "%ld", size * pages * num);
> > - write_file(PATH_KSM "pages_to_scan", buf);
> > - write_file(PATH_KSM "sleep_millisecs", "0");
> > + SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "1");
> > + SAFE_FILE_PRINTF(cleanup, PATH_KSM "pages_to_scan", "%ld",
> > + size * pages *num);
> > + SAFE_FILE_PRINTF(cleanup, PATH_KSM "sleep_millisecs", "0");
> >
> > resume_ksm_children(child, num);
> > group_check(1, 2, size * num * pages - 2, 0, 0, 0, size * pages * num);
> > @@ -460,13 +452,13 @@ void create_same_memory(int size, int num, int unit)
> > stop_ksm_children(child, num);
> >
> > tst_resm(TINFO, "KSM unmerging...");
> > - write_file(PATH_KSM "run", "2");
> > + SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "2");
> >
> > resume_ksm_children(child, num);
> > group_check(2, 0, 0, 0, 0, 0, size * pages * num);
> >
> > tst_resm(TINFO, "stop KSM.");
> > - write_file(PATH_KSM "run", "0");
> > + SAFE_FILE_PRINTF(cleanup, PATH_KSM "run", "0");
> > group_check(0, 0, 0, 0, 0, 0, size * pages * num);
> >
> > while (waitpid(-1, &status, WUNTRACED | WCONTINUED) > 0)
> > @@ -624,7 +616,6 @@ void test_transparent_hugepage(int nr_children, int
> > nr_thps,
> > {
> > unsigned long hugepagesize, memfree;
> > int i, *pids, ret, status;
> > - char path[BUFSIZ];
> >
> > if (mempolicy)
> > set_global_mempolicy(mempolicy);
> > @@ -803,8 +794,7 @@ void write_cpusets(long nd)
> > gather_node_cpus(cpus, nd);
> > write_cpuset_files(CPATH_NEW, "cpus", cpus);
> >
> > - snprintf(buf, BUFSIZ, "%d", getpid());
> > - write_file(CPATH_NEW "/tasks", buf);
> > + SAFE_FILE_PRINTF(NULL, CPATH_NEW "/tasks", "%d", getpid());
> > }
> >
> > void umount_mem(char *path, char *path_new)
> > @@ -932,13 +922,12 @@ long read_meminfo(char *item)
> > void set_sys_tune(char *sys_file, long tune, int check)
> > {
> > long val;
> > - char buf[BUFSIZ], path[BUFSIZ];
> > + char path[BUFSIZ];
> >
> > tst_resm(TINFO, "set %s to %ld", sys_file, tune);
> >
> > snprintf(path, BUFSIZ, "%s%s", PATH_SYSVM, sys_file);
>
> ditto?
>
> > - snprintf(buf, BUFSIZ, "%ld", tune);
> > - write_file(path, buf);
> > + SAFE_FILE_PRINTF(NULL, path, "%ld", tune);
> >
> > if (check) {
> > val = get_sys_tune(sys_file);
> > @@ -950,44 +939,20 @@ void set_sys_tune(char *sys_file, long tune, int
> > check)
> >
> > long get_sys_tune(char *sys_file)
> > {
> > - char buf[BUFSIZ], path[BUFSIZ];
> > + char path[BUFSIZ];
> > + long tune;
> >
> > snprintf(path, BUFSIZ, "%s%s", PATH_SYSVM, sys_file);
>
> ditto?
>
> > - read_file(path, buf);
> > - return SAFE_STRTOL(cleanup, buf, LONG_MIN, LONG_MAX);
> > -}
> > -
> > -void write_file(char *filename, char *buf)
> > -{
> > - int fd;
> > + SAFE_FILE_SCANF(NULL, path, "%ld", &tune);
> >
> > - fd = open(filename, O_WRONLY);
> > - if (fd == -1)
> > - tst_brkm(TBROK | TERRNO, cleanup, "open %s", filename);
> > - if (write(fd, buf, strlen(buf)) != strlen(buf))
> > - tst_brkm(TBROK | TERRNO, cleanup, "write %s", filename);
> > - close(fd);
> > -}
> > -
> > -void read_file(char *filename, char *retbuf)
> > -{
> > - int fd;
> > -
> > - fd = open(filename, O_RDONLY);
> > - if (fd == -1)
> > - tst_brkm(TBROK | TERRNO, cleanup, "open %s", filename);
> > - if (read(fd, retbuf, BUFSIZ) < 0)
> > - tst_brkm(TBROK | TERRNO, cleanup, "read %s", filename);
> > - close(fd);
> > + return tune;
> > }
> >
> > void update_shm_size(size_t * shm_size)
> > {
> > - char buf[BUFSIZ];
> > size_t shmmax;
> >
> > - read_file(PATH_SHMMAX, buf);
> > - shmmax = SAFE_STRTOUL(cleanup, buf, 0, ULONG_MAX);
> > + SAFE_FILE_SCANF(cleanup, PATH_SHMMAX, "%ld", shmmax);
>
> &shmmax?
>
it's an error, thank you for pointing it out, fixed it on v2.
Thanks,
Zhouping
------------------------------------------------------------------------------
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New Relic is the only SaaS-based application performance monitoring service
that delivers powerful full stack analytics. Optimize and monitor your
browser, app, & servers with just a few lines of code. Try New Relic
and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2013-04-23 7:11 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-04-23 3:29 [LTP] [PATCH] lib/mem: removed read_file() and write_file() Zhouping Liu
2013-04-23 6:49 ` Wanlong Gao
2013-04-23 7:11 ` Zhouping Liu
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