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| author |   Mikulas Patocka <mpatocka@redhat.com> | 2022-07-11 16:30:52 -0400 |
|---|---|---|
| committer |   Mike Snitzer <snitzer@kernel.org> | 2022-07-14 15:52:32 -0400 |
| commit | 2c6e755b49d273243431f5f1184654e71221fc78 (patch) | |
| tree | 2b2e5d478aa4a6ab6989f96b5bd4048326aa1bb6 /drivers/md/dm-writecache.c | |
| parent | dm writecache: return void from functions (diff) | |
| download | linux-dev-2c6e755b49d273243431f5f1184654e71221fc78.tar.xz linux-dev-2c6e755b49d273243431f5f1184654e71221fc78.zip | |
dm writecache: count number of blocks read, not number of read bios
Change dm-writecache, so that it counts the number of blocks read
instead of the number of read bios. Bios can be split and requeued
using the dm_accept_partial_bio function, so counting bios caused
inaccurate results.
Fixes: e3a35d03407c ("dm writecache: add event counters")
Reported-by: Yu Kuai <yukuai1@huaweicloud.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'drivers/md/dm-writecache.c')
| -rw-r--r-- | drivers/md/dm-writecache.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index 9e14717c46a9..a551be5f9b4b 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -1365,6 +1365,7 @@ read_next_block: } } else { writecache_map_remap_origin(wc, bio, e); + wc->stats.reads += (bio->bi_iter.bi_size - wc->block_size) >> wc->block_size_bits; map_op = WC_MAP_REMAP_ORIGIN; } |