On Thursday 06 March 2008 12:42:09 pm Jan Kara wrote: > Hi, > > Below is my rewrite of ordered mode in JBD. Now we don't have a list of > data buffers that need syncing on transaction commit but a list of inodes > that need writeout during commit. This brings all sorts of advantages such > as possibility to get rid of journal heads and buffer heads for data > buffers in ordered mode, better ordering of writes on transaction commit, > simplification of some JBD code, no more anonymous pages when truncate of > data being committed happens. The patch has survived some light testing > but it still has some potential of eating your data so beware :) I've run > dbench to see whether we didn't decrease performance by different handling > of truncate and the throughput I'm getting on my machine is the same (OK, > is lower by 0.5%) if I disable the code in truncate waiting for commit to > finish... Also the throughput of dbench is about 2% better with my patch > than with current JBD. > Any comments or testing most welcome. > > Honza Just one nit, doesn't compile properly when jbd/ext3 are modules :). Thanks much, Josef -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
