Division is slow, we can change it to shift because we have precalculated the log2 of block size.
Signed-off-by: Mikulas Patocka <[email protected]> --- drivers/md/dm-bufio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux-2.6/drivers/md/dm-bufio.c =================================================================== --- linux-2.6.orig/drivers/md/dm-bufio.c +++ linux-2.6/drivers/md/dm-bufio.c @@ -1599,7 +1599,7 @@ static bool __try_evict_buffer(struct dm static unsigned get_retain_buffers(struct dm_bufio_client *c) { unsigned retain_bytes = ACCESS_ONCE(dm_bufio_retain_bytes); - return retain_bytes / c->block_size; + return retain_bytes >> (c->sectors_per_block_bits + SECTOR_SHIFT); } static unsigned long __scan(struct dm_bufio_client *c, unsigned long nr_to_scan, -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
