selftests: mm: fix unused and uninitialized variable warning
Fix the warnings by initializing and marking the variable as unused.
I've caught the warnings by using clang.
split_huge_page_test.c:303:6: warning: variable 'dummy' set but not used [-Wunused-but-set-variable]
303 | int dummy;
| ^
split_huge_page_test.c:343:3: warning: variable 'dummy' is uninitialized when used here [-Wuninitialized]
343 | dummy += *(*addr + i);
| ^~~~~
split_huge_page_test.c:303:11: note: initialize the variable 'dummy' to silence this warning
303 | int dummy;
| ^
| = 0
2 warnings generated.
Link: https://lkml.kernel.org/r/20240416162658.3353622-1-usama.anjum@collabora.com
Fixes: fc4d182316
("mm: huge_memory: enable debugfs to split huge pages to any order")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -300,7 +300,7 @@ int create_pagecache_thp_and_fd(const char *testfile, size_t fd_size, int *fd,
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char **addr)
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{
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size_t i;
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int dummy;
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int __attribute__((unused)) dummy = 0;
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srand(time(NULL));
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