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 <[email protected]> --- 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
