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| author | Adam Manzanares <adam.manzanares@wdc.com> | 2018-05-22 10:52:19 -0700 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-05-31 10:50:55 -0400 |
| commit | d9a08a9e616beeccdbd0e7262b7225ffdfa49e92 (patch) | |
| tree | f2f7985aa07ccee2337631273f4b906389649477 /drivers | |
| parent | fc28724d67c90ff48b976e0687caf79993160bed (diff) | |
| download | linux-d9a08a9e616beeccdbd0e7262b7225ffdfa49e92.tar.gz linux-d9a08a9e616beeccdbd0e7262b7225ffdfa49e92.tar.bz2 linux-d9a08a9e616beeccdbd0e7262b7225ffdfa49e92.zip | |
fs: Add aio iopriority support
This is the per-I/O equivalent of the ioprio_set system call.
When IOCB_FLAG_IOPRIO is set on the iocb aio_flags field, then we set the
newly added kiocb ki_ioprio field to the value in the iocb aio_reqprio field.
This patch depends on block: add ioprio_check_cap function.
Signed-off-by: Adam Manzanares <adam.manzanares@wdc.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/loop.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 5d4e31655d96..dd98dfd97f5e 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -76,6 +76,8 @@ #include <linux/miscdevice.h> #include <linux/falloc.h> #include <linux/uio.h> +#include <linux/ioprio.h> + #include "loop.h" #include <linux/uaccess.h> @@ -559,6 +561,7 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd, cmd->iocb.ki_filp = file; cmd->iocb.ki_complete = lo_rw_aio_complete; cmd->iocb.ki_flags = IOCB_DIRECT; + cmd->iocb.ki_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 0); if (cmd->css) kthread_associate_blkcg(cmd->css); |