diff options
Diffstat (limited to 'src/barebox-state/backend_bucket_circular.c')
| -rw-r--r-- | src/barebox-state/backend_bucket_circular.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/barebox-state/backend_bucket_circular.c b/src/barebox-state/backend_bucket_circular.c index 53ee0c3..58fffd1 100644 --- a/src/barebox-state/backend_bucket_circular.c +++ b/src/barebox-state/backend_bucket_circular.c @@ -25,7 +25,21 @@ #include "state.h" - +/* + * The circular backend bucket code. The circular backend bucket is intended + * for mtd devices which need an erase operation. + * + * Erasing blocks is an operation that should be avoided. On NOR flashes erasing + * blocks is very time consuming and on NAND flashes each block only has a limited + * number of erase cycles allowed. For this reason we continuously write more data + * into each eraseblock and only erase it when no more free space is available. + * Don't confuse these multiple writes into a single eraseblock with buckets. A bucket + * is the whole eraseblock, we just happen to reuse the same bucket for storing + * new data. + * + * If your device is a mtd device, but does not have eraseblocks, like MRAMs, then + * the direct bucket is used instead. + */ struct state_backend_storage_bucket_circular { struct state_backend_storage_bucket bucket; |