Move the work to create the debugfs directory used into a helper.
It will make further checks easier to read. This commit introduces
no functional changes.
Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
kernel/trace/blktrace.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index ca39dc3230cb..2c6e6c386ace 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -468,6 +468,18 @@ static void blk_trace_setup_lba(struct blk_trace *bt,
}
}
+static struct dentry *blk_trace_debugfs_dir(struct blk_user_trace_setup *buts,
+ struct blk_trace *bt)
+{
+ struct dentry *dir = NULL;
+
+ dir = debugfs_lookup(buts->name, blk_debugfs_root);
+ if (!dir)
+ bt->dir = dir = debugfs_create_dir(buts->name, blk_debugfs_root);
+
+ return dir;
+}
+
/*
* Setup everything required to start tracing
*/
@@ -509,9 +521,7 @@ static int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
ret = -ENOENT;
- dir = debugfs_lookup(buts->name, blk_debugfs_root);
- if (!dir)
- bt->dir = dir = debugfs_create_dir(buts->name, blk_debugfs_root);
+ dir = blk_trace_debugfs_dir(buts, bt);
bt->dev = dev;
atomic_set(&bt->dropped, 0);
--
2.25.1
