kernfs: wire up ->splice_read and ->splice_write
authorChristoph Hellwig <hch@lst.de>
Wed, 20 Jan 2021 20:46:31 +0000 (21:46 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 21 Jan 2021 17:30:28 +0000 (18:30 +0100)
commitf2d6c2708bd84ca953fa6b6ca5717e79eb0140c7
tree9df0c46298ea06821ad05d4cfd2ce1ab2e36ea38
parentcc099e0b399889c6485c88368b19824b087c9f8c
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: 36e2c7421f02 ("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>
fs/kernfs/file.c