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UPSTREAM: kernfs: wire up ->splice_read and ->splice_write

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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>
(cherry picked from commit f2d6c2708b)
Bug: 176079972
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I80f09db0b8569fa63db59ada9c3d45d6600b2d70
This commit is contained in:
Christoph Hellwig 2021-01-20 21:46:31 +01:00 committed by Alistair Delva
parent 9cc0664497
commit e181337957
1 changed files with 2 additions and 0 deletions
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2
fs/kernfs/file.c
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@ -949,6 +949,8 @@ const struct file_operations kernfs_file_fops = {
.release = kernfs_fop_release,
.poll = kernfs_fop_poll,
.fsync = noop_fsync,
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
};
/**