Messages in this thread | | | Date | Thu, 24 Oct 2013 02:47:13 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH 05/11] direct-io: only inc/dec inode->i_dio_count for file systems |
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On Thu, Oct 24, 2013 at 10:46:00AM +0100, Jens Axboe wrote: > On Thu, Oct 24 2013, Jens Axboe wrote: > > We don't need truncate protection for block devices, so add a flag > > bypassing this cache line dirtying twice for every IO. This easily > > contributes to 5-10% of the CPU time on high IOPS O_DIRECT testing. > > There's a merge error in this patch, please find the correct one below.
Btw, I think this patch should not go in with this series but rather via the VFS tree as it's not related to the blk-mq infrastructure at all.
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