loop: fix loop block driver discard and encryption comment
The loop driver does not support discard if encryption is enabled, fix the comment. Signed-off-by: Dave Young <dyoung@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -422,7 +422,7 @@ static int do_bio_filebacked(struct loop_device *lo, struct bio *bio)
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/*
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* We use punch hole to reclaim the free space used by the
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* image a.k.a. discard. However we do support discard if
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* image a.k.a. discard. However we do not support discard if
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* encryption is enabled, because it may give an attacker
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* useful information.
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*/
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