mmapstress01: Fix printf format modifiers

[ilove737]

mmapstress01: Fix printf format modifiers

Signed-off-by: Li Xiaosong [email protected]

[pevik]

While this is technically correct thus should be merged, automatic conversion works thus it does not produce a warning. IMHO more useful would be to fix a conversion warning when compiled for 32 bit:

$ PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig CFLAGS=-m32 LDFLAGS=-m32 ./configure
...
In file included from mmapstress01.c:37:
mmapstress01.c: In function ‘fileokay’:
../../../../include/tst_test.h:121:55: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 5 has type ‘unsigned int’ [-Wformat=]
  121 |                 tst_brk_(__FILE__, __LINE__, (ttype), (arg_fmt), ##__VA_ARGS__);\
      |                                                       ^~~~~~~~~
mmapstress01.c:227:33: note: in expansion of macro ‘tst_brk’
  227 |                                 tst_brk(TFAIL, "missing data: read %lu of %ld bytes",
      |                                 ^~~~~~~

Fix would be trivial (+ avoid unnecessary brackets for multiplicating):

--- testcases/kernel/mem/mmapstress/mmapstress01.c
+++ testcases/kernel/mem/mmapstress/mmapstress01.c
@@ -225,7 +225,7 @@ static void fileokay(char *file, unsigned char *expbuf)
                        /* Okay if at last page in file... */
                        if ((i * pagesize) + cnt != mapsize)
                                tst_brk(TFAIL, "missing data: read %lu of %ld bytes",
-                                       (i * pagesize) + cnt, (long)mapsize);
+                                       (long)(i * pagesize + cnt), (long)mapsize);
                }
                /* Compare read bytes of data. */
                for (j = 0; j < (unsigned int)cnt; j++) {