f2fs_io: user O_RDONLY for fadvise

Jaegeuk Kim · Jaegeuk Kim · commit 7e0df340e038 · 2026-04-08T17:55:04.000Z
We don't need O_RDONLY for fadvise.

Signed-off-by: Jaegeuk Kim &lt;jaegeuk@kernel.org&gt;
diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
@@ -474,7 +474,7 @@ static void do_fadvise(int argc, char **argv, const struct cmd_desc *cmd)
 		exit(1);
 	}
 
-	fd = xopen(argv[4], O_RDWR, 0);
+	fd = xopen(argv[4], O_RDONLY, 0);
 
 	if (!strcmp(argv[1], "willneed")) {
 		advice = POSIX_FADV_WILLNEED;

Original file line number	Diff line number	Diff line change
`@@ -474,7 +474,7 @@ static void do_fadvise(int argc, char *argv, const struct cmd_desc cmd)`
`474`	`474`	`exit(1);`
`475`	`475`	`}`
`476`	`476`
`477`		`- fd = xopen(argv[4], O_RDWR, 0);`
	`477`	`+ fd = xopen(argv[4], O_RDONLY, 0);`
`478`	`478`
`479`	`479`	`if (!strcmp(argv[1], "willneed")) {`
`480`	`480`	`advice = POSIX_FADV_WILLNEED;`