On Mon, Apr 28 2008 at 15:13 +0300, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > On Mon, 2008-04-28 at 10:23 +0300, Boaz Harrosh wrote: >> If we are already on the subject. It looks like we always have at most 1 command in the >> free list, so why the free list at all? or am I reading the code wrong? > > Because list handlers are well understood mechanisms within the kernel. This is not an excuse ;-). So is a simple pointer. > Also because in low memory situations, one command per host is > sufficient to guarantee forward progress, but it's not going to be very > efficient. Embedded and other low memory environments can increase the > size of the free list to improve their I/O path. > Ok that is what I thought, but inspecting the code, I can't find it. Is there a config option or an external mechanism that let you do that? If not, is/was there a ready made external patch that will enable such facility in someway? Should there be one? > James > Boaz -- 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
