On 5/17/18 7:41 PM, Jens Axboe wrote: > On 5/17/18 2:38 PM, adam.manzanares@xxxxxxx wrote: >> From: Adam Manzanares <adam.manzanares@xxxxxxx> >> >> This is the per-I/O equivalent of the ioprio_set system call. >> See the following link for performance implications on a SATA HDD: >> https://lkml.org/lkml/2016/12/6/495 >> >> First patch factors ioprio_check_cap function out of ioprio_set system call to >> also be used by the aio ioprio interface. >> >> Second patch converts kiocb ki_hint field to a u16 to avoid kiocb bloat. >> >> Third patch passes ioprio hint from aio iocb to kiocb and enables block_dev >> usage of the per I/O ioprio feature. >> >> v2: merge patches >> use IOCB_FLAG_IOPRIO >> validate intended use with IOCB_IOPRIO >> add linux-api and linux-block to cc >> >> v3: add ioprio_check_cap function >> convert kiocb ki_hint to u16 >> use ioprio_check_cap when adding ioprio to kiocb in aio.c >> >> v4: handle IOCB_IOPRIO in aio_prep_rw >> note patch 3 depends on patch 1 in commit msg >> >> Adam Manzanares (3): >> block: add ioprio_check_cap function >> fs: Convert kiocb rw_hint from enum to u16 >> fs: Add aio iopriority support for block_dev >> >> block/ioprio.c | 22 ++++++++++++++++------ >> fs/aio.c | 16 ++++++++++++++++ >> fs/block_dev.c | 2 ++ >> include/linux/fs.h | 17 +++++++++++++++-- >> include/linux/ioprio.h | 2 ++ >> include/uapi/linux/aio_abi.h | 1 + >> 6 files changed, 52 insertions(+), 8 deletions(-) > > This looks fine to me now. I can pick up #1 for 4.18 - and 2+3 as well, > unless someone else wants to take them. Great, thanks Jens. >
