On 2/8/19 6:34 PM, Jens Axboe wrote:
For the upcoming async polled IO, we can't sleep allocating requests.
If we do, then we introduce a deadlock where the submitter already
has async polled IO in-flight, but can't wait for them to complete
since polled requests must be active found and reaped.
Utilize the helper in the blockdev DIRECT_IO code.
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
---
fs/block_dev.c | 4 ++--
include/linux/bio.h | 14 ++++++++++++++
2 files changed, 16 insertions(+), 2 deletions(-)
Reviewed-by: Hannes Reinecke <[email protected]>
Cheers,
Hannes
