Btrfs: avoid I/O repair BUG() from btree_read_extent_buffer_pages()

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From btree_read_extent_buffer_pages(), currently repair_io_failure()
can be called with mirror_num being zero when submit_one_bio() returned
an error before. This used to cause a BUG_ON(!mirror_num) in
repair_io_failure() and indeed this is not a case that needs the I/O
repair code to rewrite disk blocks.
This commit prevents calling repair_io_failure() in this case and thus
avoids the BUG_ON() and malfunction.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

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Stefan Behrens 2012-07-10 07:30:17 -06:00 • committed by Chris Mason

parent f4c738c2e7

commit c0901581ad

1 changed files with 1 additions and 1 deletions

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fs/btrfs/disk-io.c

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