aio: allow direct aio poll comletions for keyed wakeups

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If we get a keyed wakeup for a aio poll waitqueue and wake can acquire the
ctx_lock without spinning we can just complete the iocb straight from the
wakeup callback to avoid a context switch.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Avi Kivity <avi@scylladb.com>

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Christoph Hellwig 2018-07-16 12:25:17 +02:00

parent bfe4037e72

commit e8693bcfa0

1 changed files with 15 additions and 2 deletions

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fs/aio.c

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