On Thu, Feb 07, 10:43, Dave Chinner wrote > File data readahead: REQ_RAHEAD > Metadata readahead: REQ_META | REQ_RAHEAD > > drivers/md/bcache/request.c::check_should_bypass(): > > /* > * Flag for bypass if the IO is for read-ahead or background, > * unless the read-ahead request is for metadata (eg, for gfs2). > */ > if (bio->bi_opf & (REQ_RAHEAD|REQ_BACKGROUND) && > !(bio->bi_opf & REQ_PRIO)) > goto skip; > > bcache needs fixing - it thinks REQ_PRIO means metadata IO. That's > wrong - REQ_META means it's metadata IO, and so this is a bcache > bug. Do you think 752f66a75abad is bad (ha!) and should be reverted? Thanks Andre -- Max Planck Institute for Developmental Biology Max-Planck-Ring 5, 72076 Tübingen, Germany. Phone: (+49) 7071 601 829 http://people.tuebingen.mpg.de/maan/
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