On Thu, Jun 17, 2010 at 11:07:30AM -0500, James Bottomley wrote: > It's actually listed under 'dma issues' ... but there's really been no > satisfactory resolution or discussion of how one might be achieved. > Most filesystems rely on modifications to in-flight pages for efficiency > and copying every fs I/O page would be horrendous both for performance > and memory consumption. Nor has there really been an indication that > it's a serious issue. The two sufferers are DIF and iSCSI checksum. And, again, NFS (both client (on writes) and server (on reads)), when using sec=krb5i. Haven't tried to reproduce the problem, but I believe it would result in spurious IO errors. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
