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Chris Mason authored
btrfs_end_bio checks the number of errors on a bio against the max number of errors allowed before sending any EIOs up to the higher levels. If we got enough copies of the bio done for a given raid level, it is supposed to clear the bio error flag and return success. We have pointers to the original bio sent down by the higher layers and pointers to any cloned bios we made for raid purposes. If the original bio happens to be the one that got an io error, but not the last one to finish, it might not have the BIO_UPTODATE bit set. Then, when the last bio does finish, we'll call bio_end_io on the original bio. It won't have the uptodate bit set and we'll end up sending EIO to the higher layers. We already had a check for this, it just was conditional on getting the IO error on the very last bio. Make the check unconditional so we eat the EIOs properly. Signed-off-by:
Chris Mason <chris.mason@oracle.com>
5dbc8fca