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Btrfs: check to see if we have an inline item properly 

If our item isn't big enough to have an actual inline item when we have skinny
metadata enabled just return 1 in find_inline_backref so we can move on to the
next item.  This probably wasn't causing a problem since we check the values of
ptr and end properly, but just in case this will keep us from doing extra work.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Josef Bacik 2013-07-30 15:44:09 -04:00 committed by Chris Mason
parent 151a41bc46
commit d062d13cf1
1 changed files with 5 additions and 0 deletions
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5
fs/btrfs/relocation.c
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@ -641,6 +641,11 @@ int find_inline_backref(struct extent_buffer *leaf, int slot,
WARN_ON(item_size < sizeof(*ei) + sizeof(*bi));
return 1;
}
if (key.type == BTRFS_METADATA_ITEM_KEY &&
item_size <= sizeof(*ei)) {
WARN_ON(item_size < sizeof(*ei));
return 1;
}
if (key.type == BTRFS_EXTENT_ITEM_KEY) {
bi = (struct btrfs_tree_block_info *)(ei + 1);