Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote: > As for worry about kmallocs do these events happen often? The worst case would most likely be in a dm multipath configuration where you could get a burst of N number events (N being equal to the number of luns times the number of paths that are having an issue). > I would > not expect any of them in the normal course of operation for a system. Yes, the ones that are part of this patch are unexpected events or recovery of the unexpected event. > Worst case you handle extra kmallocs with a library function. > It's not like you are using GFP_ATOMIC. I was using GFP_ATOMIC as I did not want __GFP_IO as in some testing there was a case where heavy file system IO was going on and an injected error event caused the swap device into a temporary queued condition while an event was trying to be sent. I may need to go back and investigate this case on recent kernels as it has been a while since I did the test case. -andmike -- Michael Anderson andmike@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
