On Tue, Apr 01 2008, joern@xxxxxxxxx wrote: > And it is currently reasonably simple to run into a deadlock when > using logfs on a block device. The problem appears to be the block > layer allocating memory for its cache without GFP_NOFS, so that under > memory pressure logfs writes through block layer may recurse back to > logfs writes. So you mean for writes through the page cache, you are seeing pages allocated with __GFP_FS set? > Not entirely sure who is to blame for this bug and how to > solve it. A good starting point would be doing a stack trace dump in logfs if you see such back recursion into the fs. A quick guess would be a missing setting of mapping gfp mask? -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
