When building bcachefs for 32-bit ARM, there is a compiler warning in
bch2_alloc_v4_invalid() due to use of an incorrect format specifier:
fs/bcachefs/alloc_background.c:246:30: error: format specifies type 'unsigned
long' but the argument has type 'unsigned int' [-Werror,-Wformat]
245 | prt_printf(err, "bad val size (%u > %lu)",
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| %u
246 | alloc_v4_u64s(a.v), bkey_val_u64s(k.k));
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
fs/bcachefs/bkey.h:58:27: note: expanded from macro 'bkey_val_u64s'
58 | #define bkey_val_u64s(_k) ((_k)->u64s - BKEY_U64s)
| ^
fs/bcachefs/util.h:223:54: note: expanded from macro 'prt_printf'
223 | #define prt_printf(_out, ...) bch2_prt_printf(_out,
__VA_ARGS__)
|
^~~~~~~~~~~
This expression is of type 'size_t'. On 64-bit architectures, size_t is
'unsigned long', so there is no warning when using %lu but on 32-bit
architectures, size_t is 'unsigned int'. Use '%zu', the format specifier
for 'size_t' to eliminate the warning.
Fixes: 11be8e8db283 ("bcachefs: New on disk format: Backpointers")
Signed-off-by: Nathan Chancellor <[email protected]>
---
fs/bcachefs/alloc_background.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/bcachefs/alloc_background.c b/fs/bcachefs/alloc_background.c
index 540d94c0cceb..67e73864823c 100644
--- a/fs/bcachefs/alloc_background.c
+++ b/fs/bcachefs/alloc_background.c
@@ -242,7 +242,7 @@ int bch2_alloc_v4_invalid(const struct bch_fs *c, struct
bkey_s_c k,
struct bkey_s_c_alloc_v4 a = bkey_s_c_to_alloc_v4(k);
if (alloc_v4_u64s(a.v) > bkey_val_u64s(k.k)) {
- prt_printf(err, "bad val size (%u > %lu)",
+ prt_printf(err, "bad val size (%u > %zu)",
alloc_v4_u64s(a.v), bkey_val_u64s(k.k));
return -BCH_ERR_invalid_bkey;
}
--
2.42.0
