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fs: add new vfs_poll and file_can_poll helpers

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These abstract out calls to the poll method in preparation for changes
in how we poll.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
This commit is contained in:
Christoph Hellwig 2018-03-05 07:26:05 -08:00
commit 9965ed174e
9 changed files with 32 additions and 38 deletions
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drivers/vfio/virqfd.c
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@ -166,7 +166,7 @@ int vfio_virqfd_enable(void *opaque,
init_waitqueue_func_entry(&virqfd->wait, virqfd_wakeup);
init_poll_funcptr(&virqfd->pt, virqfd_ptable_queue_proc);
events = irqfd.file->f_op->poll(irqfd.file, &virqfd->pt);
events = vfs_poll(irqfd.file, &virqfd->pt);
/*
* Check if there was an event already pending on the eventfd