On 04/21/2015 05:47 PM, Mark Fasheh wrote: > btrfs_check_shared() is leaking a return value of '1' from > find_parent_nodes(). As a result, callers (in this case, extent_fiemap()) > are told extents are shared when they are not. This in turn broke fiemap on > btrfs for kernels v3.18 and up. > > The fix is simple - we just have to clear 'ret' after we are done processing > the results of find_parent_nodes(). > > It wasn't clear to me at first what was happening with return values in > btrfs_check_shared() and find_parent_nodes() - thanks to Josef for the help > on irc. I added documentation to both functions to make things more clear > for the next hacker who might come across them. > Thanks Mark, any reason not to tag this for stable? -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
