On 12/19/2012 04:07 PM, Milan Broz wrote:
Does this help?dm-crypt: never use write same Ciphertext device is not compatible with WRITE SAME, disable it for all dmcrypt devices. Signed-off-by: Milan Broz <mb...@redhat.com> --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1844,6 +1844,12 @@ static int crypt_iterate_devices(struct dm_target *ti, return fn(ti, cc->dev, cc->start, ti->len, data); }+static void crypt_io_hints(struct dm_target *ti,+ struct queue_limits *limits) +{ + limits->max_write_same_sectors = 0; +} + static struct target_type crypt_target = { .name = "crypt", .version = {1, 11, 0}, @@ -1858,6 +1864,7 @@ static struct target_type crypt_target = { .message = crypt_message, .merge = crypt_merge, .iterate_devices = crypt_iterate_devices, + .io_hints = crypt_io_hints, };static int __init dm_crypt_init(void)
I'll give it a spin right now. Thanks for the quick work! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
