[LTP] [PATCH 0/4] syscalls/cachestat01: minor improvements

[LTP] [PATCH 0/4] syscalls/cachestat01: minor improvements

[Avinesh Kumar via ltp]

A few small cleanups and a fix for an unchecked fsync() in cachestat01.

Avinesh Kumar (4):
  syscalls/cachestat01: Remove redundant memset() on cachestat buffer
  syscalls/cachestat01: Drop stray newline in tst_res() message
  syscalls/cachestat01: Add spaces around '<<' operator
  syscalls/cachestat01: Use SAFE_FSYNC() instead of fsync()

 testcases/kernel/syscalls/cachestat/cachestat01.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

-- 
2.54.0


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[LTP] [PATCH 1/4] syscalls/cachestat01: Remove redundant memset() on cachestat buffer

[Avinesh Kumar via ltp]

From: Avinesh Kumar <avinesh.kumar@suse.com>

Signed-off-by: Avinesh Kumar <avinesh.kumar@suse.com>
---
 testcases/kernel/syscalls/cachestat/cachestat01.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/testcases/kernel/syscalls/cachestat/cachestat01.c b/testcases/kernel/syscalls/cachestat/cachestat01.c
index aa6f21d41d1a..ca2c2864a1d1 100644
--- a/testcases/kernel/syscalls/cachestat/cachestat01.c
+++ b/testcases/kernel/syscalls/cachestat/cachestat01.c
@@ -36,8 +36,6 @@ static void test_cached_pages(const unsigned int use_sync, const int num_pages)
 	tst_res(TINFO, "%s file synchronization", use_sync ? "Enable" : "Disable");
 	tst_res(TINFO, "Number of pages: %d", num_pages);
 
-	memset(cs, 0, sizeof(struct cachestat));
-
 	fd = SAFE_OPEN(FILENAME, O_RDWR | O_CREAT, 0600);
 
 	for (int i = 0; i < num_pages; i++)
-- 
2.54.0


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Re: [LTP] syscalls/cachestat01: Remove redundant memset() on cachestat buffer

[linuxtestproject.agent]

Hi Avinesh,

On Wed, 8 Jul 2026 11:11:51 +0200, Avinesh Kumar wrote:
> syscalls/cachestat01: Remove redundant memset() on cachestat buffer

Verdict - Reviewed

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Note:

The agent can sometimes produce false positives although often its
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comment this email or ignore the suggestions.

Regards,
LTP AI Reviewer

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[LTP] [PATCH 2/4] syscalls/cachestat01: Drop stray newline in tst_res() message

[Avinesh Kumar via ltp]

From: Avinesh Kumar <avinesh.kumar@suse.com>

tst_res() appends its own newline, so this prints a blank line.

tst_test.c:1303: TINFO: Mounting /dev/loop0 to /var/tmp/LTP_cacmJmF9g/mntpoint fstyp=ext2 flags=0
cachestat01.c:78: TINFO: Limiting num_shift to 3

cachestat01.c:36: TINFO: Disable file synchronization
cachestat01.c:37: TINFO: Number of pages: 1

Signed-off-by: Avinesh Kumar <avinesh.kumar@suse.com>
---
 testcases/kernel/syscalls/cachestat/cachestat01.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testcases/kernel/syscalls/cachestat/cachestat01.c b/testcases/kernel/syscalls/cachestat/cachestat01.c
index ca2c2864a1d1..7cc72cc1bf21 100644
--- a/testcases/kernel/syscalls/cachestat/cachestat01.c
+++ b/testcases/kernel/syscalls/cachestat/cachestat01.c
@@ -73,7 +73,7 @@ static void setup(void)
 
 	for (num_shift = 0; num_shift <= 15; num_shift++) {
 		if ((1lu<<num_shift) * page_size / 1024 >= tst_device->size) {
-			tst_res(TINFO, "Limiting num_shift to %i\n", num_shift);
+			tst_res(TINFO, "Limiting num_shift to %i", num_shift);
 			break;
 		}
 	}
-- 
2.54.0


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[LTP] [PATCH 3/4] syscalls/cachestat01: Add spaces around '<<' operator

[Avinesh Kumar via ltp]

From: Avinesh Kumar <avinesh.kumar@suse.com>

$ make check-cachestat01
CHECK testcases/kernel/syscalls/cachestat/cachestat01.c
cachestat01.c:75: CHECK: spaces preferred around that '<<' (ctx:VxV)

Signed-off-by: Avinesh Kumar <avinesh.kumar@suse.com>
---
 testcases/kernel/syscalls/cachestat/cachestat01.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testcases/kernel/syscalls/cachestat/cachestat01.c b/testcases/kernel/syscalls/cachestat/cachestat01.c
index 7cc72cc1bf21..1db530ffe9e5 100644
--- a/testcases/kernel/syscalls/cachestat/cachestat01.c
+++ b/testcases/kernel/syscalls/cachestat/cachestat01.c
@@ -72,7 +72,7 @@ static void setup(void)
 	page_size = (int)sysconf(_SC_PAGESIZE);
 
 	for (num_shift = 0; num_shift <= 15; num_shift++) {
-		if ((1lu<<num_shift) * page_size / 1024 >= tst_device->size) {
+		if ((1lu << num_shift) * page_size / 1024 >= tst_device->size) {
 			tst_res(TINFO, "Limiting num_shift to %i", num_shift);
 			break;
 		}
-- 
2.54.0


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[LTP] [PATCH 4/4] syscalls/cachestat01: Use SAFE_FSYNC() instead of fsync()

[Avinesh Kumar via ltp]

From: Avinesh Kumar <avinesh.kumar@suse.com>

Success of fsync() is not checked. Use SAFE_FSYNC() instead so that a
failed synchronization is reported instead of being silently ignored.

Signed-off-by: Avinesh Kumar <avinesh.kumar@suse.com>
---
 testcases/kernel/syscalls/cachestat/cachestat01.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testcases/kernel/syscalls/cachestat/cachestat01.c b/testcases/kernel/syscalls/cachestat/cachestat01.c
index 1db530ffe9e5..1ba0f9888f0f 100644
--- a/testcases/kernel/syscalls/cachestat/cachestat01.c
+++ b/testcases/kernel/syscalls/cachestat/cachestat01.c
@@ -42,7 +42,7 @@ static void test_cached_pages(const unsigned int use_sync, const int num_pages)
 		SAFE_WRITE(0, fd, page_data, page_size);
 
 	if (use_sync)
-		fsync(fd);
+		SAFE_FSYNC(fd);
 
 	cs_range->off = 0;
 	cs_range->len = page_size * num_pages;
-- 
2.54.0


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Re: [LTP] [PATCH 4/4] syscalls/cachestat01: Use SAFE_FSYNC() instead of fsync()

[Petr Vorel]

Hi Avinesh,

thanks for the cleanup, merged!

Kind regards,
Petr

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