From b8b5e7b00247eeeb8e09e98c8360c8440067a095 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Fri, 24 Mar 2017 17:52:48 +0100 Subject: state: backend bucket circular: Explain metadata Explain why we have metadata and where it is used. Signed-off-by: Sascha Hauer --- src/barebox-state/backend_bucket_circular.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src') diff --git a/src/barebox-state/backend_bucket_circular.c b/src/barebox-state/backend_bucket_circular.c index 5a525f6..d99ba39 100644 --- a/src/barebox-state/backend_bucket_circular.c +++ b/src/barebox-state/backend_bucket_circular.c @@ -61,6 +61,11 @@ struct state_backend_storage_bucket_circular { struct device_d *dev; }; +/* + * The metadata will be written directly before writesize aligned offsets. + * When searching backwards through the pages it allows us to find the + * beginning of the data. + */ struct __attribute__((__packed__)) state_backend_storage_bucket_circular_meta { uint32_t magic; uint32_t written_length; -- cgit v1.2.3