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(parent: e89d675) | patch
bcache: update bio->bi_opf bypass/writeback REQ_ flag hints
authorEric Wheeler <bcache@linux.ewheeler.net>
Fri, 13 Oct 2017 23:35:33 +0000 (16:35 -0700)
committerJens Axboe <axboe@kernel.dk>
Mon, 16 Oct 2017 15:07:26 +0000 (09:07 -0600)
commitb41c9b0266e8370033a7799f6806bfc70b7fd75f
tree0c2aa53a2c267290dae162b6573ab0f74d73194dtree | snapshot
parente89d67596e202119ea846cc997f4cf75cb284490commit | diff
bcache: update bio->bi_opf bypass/writeback REQ_ flag hints

Flag for bypass if the IO is for read-ahead or background, unless the
read-ahead request is for metadata (eg, from gfs2).
        Bypass if:
                bio->bi_opf & (REQ_RAHEAD|REQ_BACKGROUND) &&
!(bio->bi_opf & REQ_META))

        Writeback if:
                op_is_sync(bio->bi_opf) ||
bio->bi_opf & (REQ_META|REQ_PRIO)

Signed-off-by: Eric Wheeler <bcache@linux.ewheeler.net>
Reviewed-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/md/bcache/request.c diff | blob | history
drivers/md/bcache/writeback.h diff | blob | history
Domain: System / Kernel;