Change dm-writecache, so that it counts the number of blocks discarded instead of the number of discard bios. Make it consistent with the read and write statistics counters that were changed to count the number of blocks instead of bios.
Signed-off-by: Mikulas Patocka <[email protected]> Index: linux-2.6/drivers/md/dm-writecache.c =================================================================== --- linux-2.6.orig/drivers/md/dm-writecache.c +++ linux-2.6/drivers/md/dm-writecache.c @@ -1514,7 +1514,7 @@ static enum wc_map_op writecache_map_flu static enum wc_map_op writecache_map_discard(struct dm_writecache *wc, struct bio *bio) { - wc->stats.discards++; + wc->stats.discards += bio->bi_iter.bi_size >> wc->block_size_bits; if (writecache_has_error(wc)) return WC_MAP_ERROR; Index: linux-2.6/Documentation/admin-guide/device-mapper/writecache.rst =================================================================== --- linux-2.6.orig/Documentation/admin-guide/device-mapper/writecache.rst +++ linux-2.6/Documentation/admin-guide/device-mapper/writecache.rst @@ -87,7 +87,7 @@ Status: 11. the number of write blocks that are allocated in the cache 12. the number of write requests that are blocked on the freelist 13. the number of flush requests -14. the number of discard requests +14. the number of discarded blocks Messages: flush -- dm-devel mailing list [email protected] https://listman.redhat.com/mailman/listinfo/dm-devel
