On 2/8/19 6:34 PM, Jens Axboe wrote:

From: Christoph Hellwig <hch@lst.de>

This new methods is used to explicitly poll for I/O completion for an
iocb.  It must be called for any iocb submitted asynchronously (that
is with a non-null ki_complete) which has the IOCB_HIPRI flag set.

The method is assisted by a new ki_cookie field in struct iocb to store
the polling cookie.

Reviewed-by: Johannes Thumshirn <redacted>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
  Documentation/filesystems/vfs.txt | 3 +++
  include/linux/fs.h                | 2 ++
  2 files changed, 5 insertions(+)

Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes


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