OOM and USB, latest Linux 2.6

From: Dan Aloni
Date: Sat Feb 17 2007 - 11:50:07 EST


Is it possible that OOM isn't handled very well if say, my entire
file system structure is on a USB storage device?

I'm not an expert on this particular matter but I'm pretty sure
that I noticed GFP_KERNEL allocation being done on the write-out
path in the usb-storage kernel thread, leading to a deadlock
during OOM.

Suggestions are welcomed...

Dan Aloni
XIV LTD, http://www.xivstorage.com
da-x (at) monatomic.org, dan (at) xiv.co.il
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