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authorJohannes Thumshirn <johannes.thumshirn@wdc.com>2020-05-12 10:55:54 +0200
committerJens Axboe <axboe@kernel.dk>2020-05-13 04:36:28 +0200
commit02ef12a663c7ac24b06146d0ed3137848edb0676 (patch)
treebbb9461566652f720fce10137b6dbe5bbe62c503 /Documentation/Changes
parentblock: export bio_release_pages and bio_iov_iter_get_pages (diff)
downloadlinux-02ef12a663c7ac24b06146d0ed3137848edb0676.tar.xz
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zonefs: use REQ_OP_ZONE_APPEND for sync DIO
Synchronous direct I/O to a sequential write only zone can be issued using the new REQ_OP_ZONE_APPEND request operation. As dispatching multiple BIOs can potentially result in reordering, we cannot support asynchronous IO via this interface. We also can only dispatch up to queue_max_zone_append_sectors() via the new zone-append method and have to return a short write back to user-space in case an IO larger than queue_max_zone_append_sectors() has been issued. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Acked-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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