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drbd: don't expose failed local READ to upper layers 

fix regression introduced in 8.3.3:
 commit a9b17323f2875f5d9b132c2b476a750bf44b10c7
 Author: Lars Ellenberg <lars.ellenberg@linbit.com>
 Date:   Wed Aug 12 15:18:33 2009 +0200

     out-of-spinlock completion of master bio

 : (bio_rw(bio) == READA)
    ? read_completed_with_error
    : read_ahead_completed_with_error;

is obviously not what was intended.

No one noticed because of
 * page-cache at work,
 * local RAIDs

Impact:
Failed local READs are not retried remotely,
but errored to upper layers, causing filesystems
to remount read-only, or worse.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Lars Ellenberg 2010-04-10 02:10:09 +02:00 committed by Philipp Reisner
parent 3c2023dd8e
commit 5c3c7e64bb
1 changed files with 1 additions and 1 deletions
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2
drivers/block/drbd/drbd_worker.c
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@ -235,7 +235,7 @@ void drbd_endio_pri(struct bio *bio, int error)
if (unlikely(error)) {
what = (bio_data_dir(bio) == WRITE)
? write_completed_with_error
: (bio_rw(bio) == READA)
: (bio_rw(bio) == READ)
? read_completed_with_error
: read_ahead_completed_with_error;
} else