Messages in this thread | | | Date | Sat, 5 Aug 2006 14:25:37 +0200 | From | Christoph Hellwig <> | Subject | Re: [RFC] [PATCH] Relative lazy atime |
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On Wed, Aug 02, 2006 at 11:36:22PM -0700, Valerie Henson wrote: > (Corrected Chris Wedgwood's name and email.) > > My friend Akkana followed my advice to use noatime on one of her > machines, but discovered that mutt was unusable because it always > thought that new messages had arrived since the last time it had > checked a folder (mbox format). I thought this was a bummer, so I > wrote a "relative lazy atime" patch which only updates the atime if > the old atime was less than the ctime or mtime. This is not the same > as the lazy atime patch of yore[1], which maintained a list of inodes > with dirty atimes and wrote them out on unmount.
Another idea, similar to how atime updates work in xfs currently might be interesting: Always update atime in core, but don't start a transaction just for it - instead only flush it when you'd do it anyway, that is another transaction or evicting the inode.
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