From: Arve Hjønnevåg arve@android.com
Wastes less memory and allows using more memory for ecc than data.
Signed-off-by: Arve Hjønnevåg arve@android.com [jstultz: Tweaked commit subject] Signed-off-by: John Stultz john.stultz@linaro.org Signed-off-by: Anton Vorontsov anton@enomsg.org --- fs/pstore/ram_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index 0306303..e5afa22 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -187,7 +187,8 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz, prz->ecc_block_size = 128; prz->ecc_size = ecc_size;
- ecc_blocks = DIV_ROUND_UP(prz->buffer_size, prz->ecc_block_size); + ecc_blocks = DIV_ROUND_UP(prz->buffer_size - prz->ecc_size, + prz->ecc_block_size + prz->ecc_size); ecc_total = (ecc_blocks + 1) * prz->ecc_size; if (ecc_total >= prz->buffer_size) { pr_err("%s: invalid ecc_size %u (total %zu, buffer size %zu)\n",