CRC computation now an inline header function which will be used in
multiple places in the future.
--
Signed-off-by: Joel Reardon <reardonj@xxxxxxxxxxx>
fs/ubifs/io.c | 4 +---
fs/ubifs/misc.h | 15 +++++++++++++++
2 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index 9228950..103532e 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -379,7 +379,6 @@ static unsigned long long next_sqnum(struct ubifs_info *c)
*/
void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad)
{
- uint32_t crc;
struct ubifs_ch *ch = node;
unsigned long long sqnum = next_sqnum(c);
@@ -390,8 +389,7 @@ void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad)
ch->group_type = UBIFS_NO_NODE_GROUP;
ch->sqnum = cpu_to_le64(sqnum);
ch->padding[0] = ch->padding[1] = 0;
- crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8);
- ch->crc = cpu_to_le32(crc);
+ ubifs_set_node_crc(node);
if (pad) {
len = ALIGN(len, 8);
diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h
index ee7cb5e..ffda6a5 100644
--- a/fs/ubifs/misc.h
+++ b/fs/ubifs/misc.h
@@ -27,6 +27,9 @@
#ifndef __UBIFS_MISC_H__
#define __UBIFS_MISC_H__
+#include <linux/crc32.h>
+#include "ubifs-media.h"
+
/**
* ubifs_zn_dirty - check if znode is dirty.
* @znode: znode to check
@@ -300,4 +303,16 @@ static inline int ubifs_next_log_lnum(const struct ubifs_info *c, int lnum)
return lnum;
}
+/**
+ * ubifs_set_crc - computes and writes the crc for a ubifs node to the common
+ * header.
+ * @node: the data node
+ */
+static inline void ubifs_set_node_crc(void *node)
+{
+ struct ubifs_ch *ch = (struct ubifs_ch *) node;
+ int len = le32_to_cpu(ch->len);
+ ch->crc = cpu_to_le32(crc32(UBIFS_CRC32_INIT, node + 8, len - 8));
+}
+
#endif /* __UBIFS_MISC_H__ */
--
1.7.1
--
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