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-rw-r--r--fs/bio.c5
-rw-r--r--fs/seq_file.c14
2 files changed, 17 insertions, 2 deletions
diff --git a/fs/bio.c b/fs/bio.c
index 77a55bcceed..df99c882b80 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -26,8 +26,11 @@
#include <linux/mempool.h>
#include <linux/workqueue.h>
#include <linux/blktrace_api.h>
+#include <trace/block.h>
#include <scsi/sg.h> /* for struct sg_iovec */
+DEFINE_TRACE(block_split);
+
static struct kmem_cache *bio_slab __read_mostly;
static mempool_t *bio_split_pool __read_mostly;
@@ -1263,7 +1266,7 @@ struct bio_pair *bio_split(struct bio *bi, int first_sectors)
if (!bp)
return bp;
- blk_add_trace_pdu_int(bdev_get_queue(bi->bi_bdev), BLK_TA_SPLIT, bi,
+ trace_block_split(bdev_get_queue(bi->bi_bdev), bi,
bi->bi_sector + first_sectors);
BUG_ON(bi->bi_vcnt != 1);
diff --git a/fs/seq_file.c b/fs/seq_file.c
index eba2eabcd2b..16c211558c2 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -357,7 +357,18 @@ int seq_printf(struct seq_file *m, const char *f, ...)
}
EXPORT_SYMBOL(seq_printf);
-static char *mangle_path(char *s, char *p, char *esc)
+/**
+ * mangle_path - mangle and copy path to buffer beginning
+ * @s: buffer start
+ * @p: beginning of path in above buffer
+ * @esc: set of characters that need escaping
+ *
+ * Copy the path from @p to @s, replacing each occurrence of character from
+ * @esc with usual octal escape.
+ * Returns pointer past last written character in @s, or NULL in case of
+ * failure.
+ */
+char *mangle_path(char *s, char *p, char *esc)
{
while (s <= p) {
char c = *p++;
@@ -376,6 +387,7 @@ static char *mangle_path(char *s, char *p, char *esc)
}
return NULL;
}
+EXPORT_SYMBOL(mangle_path);
/*
* return the absolute path of 'dentry' residing in mount 'mnt'.