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btrfs: allow error injection for btrfs_search_slot and btrfs_cow_block 

The following patches are going to address error handling in relocation,
in order to test those patches I need to be able to inject errors in
btrfs_search_slot and btrfs_cow_block, as we call both of these pretty
often in different cases during relocation.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-12-16 11:18:43 -05:00 committed by David Sterba
parent 69948022c9
commit f75e2b79b5
1 changed files with 2 additions and 0 deletions
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2
fs/btrfs/ctree.c
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@ -1494,6 +1494,7 @@ noinline int btrfs_cow_block(struct btrfs_trans_handle *trans,
return ret;
}
ALLOW_ERROR_INJECTION(btrfs_cow_block, ERRNO);
/*
* helper function for defrag to decide if two blocks pointed to by a
@ -2821,6 +2822,7 @@ done:
btrfs_release_path(p);
return ret;
}
ALLOW_ERROR_INJECTION(btrfs_search_slot, ERRNO);
/*
* Like btrfs_search_slot, this looks for a key in the given tree. It uses the