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
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Makefile	…
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