On 01/07/2014 05:58 AM, David Laight wrote: > The dmesg contains: > > [ 538.728064] EXT4-fs warning (device dm-0): ext4_end_bio:316: I/O error writing to inode 23330865 (offset 0 size 8388608 starting block 812628) > > An 8MB transfer will need at least 128 ring entries (TRB) even if the request > is a single contiguous memory block. > > Are you using the patch that increases the ring size from 64 to 256? Yes, 256. I'll work on getting more debugging output. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html