[cache_check (rust)] Fix discard bitset availability checking

This commit is contained in:
Ming-Hung Tsai 2021-05-21 12:24:26 +08:00
parent ce94ba73a5
commit 6a29f6a41a

5
src/cache/check.rs vendored
View File

@ -274,8 +274,11 @@ pub fn check(opts: CacheCheckOptions) -> anyhow::Result<()> {
return Ok(());
}
// The discard bitset is optional and could be updated during device suspension.
// A restored metadata therefore comes with a zero-sized discard bitset,
// and also zeroed discard_block_size and discard_nr_blocks.
let nr_origin_blocks;
if sb.flags.clean_shutdown {
if sb.flags.clean_shutdown && sb.discard_block_size > 0 && sb.discard_nr_blocks > 0 {
let origin_sectors = sb.discard_block_size * sb.discard_nr_blocks;
nr_origin_blocks = Some(origin_sectors / sb.data_block_size as u64);
} else {