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kernfs: wire up ->splice_read and ->splice_write
Wire up the splice_read and splice_write methods to the default
helpers using ->read_iter and ->write_iter now that those are
implemented for kernfs. This restores support to use splice and
sendfile on kernfs files.
Fixes: 36e2c7421f
("fs: don't allow splice read/write without explicit ops")
Reported-by: Siddharth Gupta <sidgup@codeaurora.org>
Tested-by: Siddharth Gupta <sidgup@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210120204631.274206-4-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -949,6 +949,8 @@ const struct file_operations kernfs_file_fops = {
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.release = kernfs_fop_release,
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.poll = kernfs_fop_poll,
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.fsync = noop_fsync,
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.splice_read = generic_file_splice_read,
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.splice_write = iter_file_splice_write,
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};
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/**
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