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Subject[PATCH 10/18] orangefs: use ARRAY_SIZE
Date
Using the ARRAY_SIZE macro improves the readability of the code.

Found with Coccinelle with the following semantic patch:
@r depends on (org || report)@
type T;
T[] E;
position p;
@@
(
(sizeof(E)@p /sizeof(*E))
|
(sizeof(E)@p /sizeof(E[...]))
|
(sizeof(E)@p /sizeof(T))
)

Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
---
fs/orangefs/orangefs-debug.h | 4 +++-
fs/orangefs/orangefs-utils.c | 3 ++-
2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/orangefs/orangefs-debug.h b/fs/orangefs/orangefs-debug.h
index 387db17cde2b..af1ec4e809e2 100644
--- a/fs/orangefs/orangefs-debug.h
+++ b/fs/orangefs/orangefs-debug.h
@@ -14,8 +14,10 @@

#ifdef __KERNEL__
#include <linux/types.h>
+#include <linux/kernel.h>
#else
#include <stdint.h>
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#endif

#define GOSSIP_NO_DEBUG (__u64)0
@@ -87,6 +89,6 @@ static struct __keyword_mask_s s_kmod_keyword_mask_map[] = {
};

static const int num_kmod_keyword_mask_map = (int)
- (sizeof(s_kmod_keyword_mask_map) / sizeof(struct __keyword_mask_s));
+ (ARRAY_SIZE(s_kmod_keyword_mask_map));

#endif /* __ORANGEFS_DEBUG_H */
diff --git a/fs/orangefs/orangefs-utils.c b/fs/orangefs/orangefs-utils.c
index aab6f1842963..d1fe32e4ffb3 100644
--- a/fs/orangefs/orangefs-utils.c
+++ b/fs/orangefs/orangefs-utils.c
@@ -3,6 +3,7 @@
*
* See COPYING in top-level directory.
*/
+#include <linux/kernel.h>
#include "protocol.h"
#include "orangefs-kernel.h"
#include "orangefs-dev-proto.h"
@@ -605,7 +606,7 @@ int orangefs_normalize_to_errno(__s32 error_code)
/* Convert ORANGEFS encoded errno values into regular errno values. */
} else if ((-error_code) & ORANGEFS_ERROR_BIT) {
i = (-error_code) & ~(ORANGEFS_ERROR_BIT|ORANGEFS_ERROR_CLASS_BITS);
- if (i < sizeof(PINT_errno_mapping)/sizeof(*PINT_errno_mapping))
+ if (i < ARRAY_SIZE(PINT_errno_mapping))
error_code = -PINT_errno_mapping[i];
else
error_code = -EINVAL;
--
2.14.1
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