Btrfs: cleanup BUG_ON in merge_bio

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One can use btrfs-corrupt-block to hit BUG_ON() in merge_bio(),
thus this aims to stop anyone to panic the whole system by using
 their btrfs.

Since the error in merge_bio can only come from __btrfs_map_block()
when chunk tree mapping has something insane and __btrfs_map_block()
has already had printed the reason, we can just return errors in
merge_bio.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

Liu Bo 2016-06-22 18:31:49 -07:00 • committed by David Sterba

parent fba4b69771

commit 6f034ece34

2 changed files with 6 additions and 3 deletions

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1

fs/btrfs/extent_io.c

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8

fs/btrfs/inode.c

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