> xfs: align initial file allocations correctly. > > From: Dave Chinner <dchinner@xxxxxxxxxx> > > The function xfs_bmap_isaeof() is used to indicate that an > allocation is occurring at or past the end of file, and as such > should be aligned to the underlying storage geometry if possible. > > Commit 27a3f8f ("xfs: introduce xfs_bmap_last_extent") changed the > behaviour of this function for empty files - it turned off > allocation alignment for this case accidentally. Hence large initial > allocations from direct IO are not getting correctly aligned to the > underlying geometry, and that is cause write performance to drop in > alignment sensitive configurations. > > Fix it by considering allocation into empty files as requiring > aligned allocation again. Seems like this one didn't get picked up yet? _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs