While compiling for aarch64, the compiler throws the warning below because char is unsigned for aarch64. main.c: In function ‘main’: main.c:145:48: warning: comparison is always true due to limited range of data type [-Wtype-limits] 145 | while((opt = getopt(argc, argv, "dF")) != -1) { | This makes nfsrahead to run forever. Fix opt type to the same as getopt type. Signed-off-by: Thiago Becker <tbecker@xxxxxxxxxx> --- tools/nfsrahead/main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/tools/nfsrahead/main.c b/tools/nfsrahead/main.c index 5fae941c..c83c6f71 100644 --- a/tools/nfsrahead/main.c +++ b/tools/nfsrahead/main.c @@ -135,10 +135,9 @@ static int conf_get_readahead(const char *kind) { int main(int argc, char **argv) { - int ret = 0, retry; + int ret = 0, retry, opt; struct device_info device; unsigned int readahead = 128, log_level, log_stderr = 0; - char opt; log_level = D_ALL & ~D_GENERAL; -- 2.35.1