kernel-fxtec-pro1x/fs/debugfs
Omar Sandoval a7c5437b0b debugfs: add debugfs_lookup()
We don't always have easy access to the dentry of a file or directory we
created in debugfs. Add a helper which allows us to get a dentry we
previously created.

The motivation for this change is a problem with blktrace and the blk-mq
debugfs entries introduced in 07e4fead45 ("blk-mq: create debugfs
directory tree"). Namely, in some cases, the directory that blktrace
needs to create may already exist, but in other cases, it may not. We
_could_ rely on a bunch of implied knowledge to decide whether to create
the directory or not, but it's much cleaner on our end to just look it
up.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-02 10:20:16 -07:00
..
file.c debugfs: propagate release() call result 2016-09-27 12:45:57 +02:00
inode.c debugfs: add debugfs_lookup() 2017-02-02 10:20:16 -07:00
internal.h debugfs: remove extra debugfs_create_file_unsafe() declaration 2016-08-31 15:08:10 +02:00
Makefile