This comment was true when dm-bufio was written, but since the kernel 4.3, bios can have arbitrary size and the driver splits them. Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx> --- drivers/md/dm-bufio.c | 4 ---- 1 file changed, 4 deletions(-) Index: linux-2.6/drivers/md/dm-bufio.c =================================================================== --- linux-2.6.orig/drivers/md/dm-bufio.c 2018-02-14 20:26:06.458255000 +0100 +++ linux-2.6/drivers/md/dm-bufio.c 2018-03-04 06:34:28.758289000 +0100 @@ -544,10 +544,6 @@ static void __relink_lru(struct dm_buffe * * the memory must be direct-mapped, not vmalloced; * - * the I/O driver can reject requests spuriously if it thinks that - * the requests are too big for the device or if they cross a - * controller-defined memory boundary. - * * If the buffer is small enough (up to DM_BUFIO_INLINE_VECS pages) and * it is not vmalloced, try using the bio interface. * -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
