[haiku-development] Re: [BUG] File cache issue on hrev46464
- From: François Revol <revol@xxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sun, 08 Dec 2013 01:48:16 +0100
On 08/12/2013 00:28, François Revol wrote:
> On 07/12/2013 03:38, Ingo Weinhold wrote:
>> If you also enable ktracing for syscalls, you'll be able to narrow it
>> down easily to a single tracing item, so that you can get a stack trace.
>> From there it should be straightforward to analyze the problem with more
>> debug output.
>
> Well I spent some time digging how to use it but I didn't get a nice
> tutorial (hey, could make a nice GCI task), so I only added some dprintf.
>
> The hints go down to BFS bfs_get_file_map() returning it (bfsinfo says
> the file needs 9 block_runs, so obviously 8 vecs are not enough), called
> from do_iterative_fd_io_iterate().
>
> I reverted 24d0e21f51e88ab35cc3f1c1750741dfeb40933d
> (do_iterative_fd_io_iterate(): Support sparse files)
> ...locally and it reads the file just fine now.
Ok I just removed the extra error == B_OK test in the for loop and it
seems to work, but you really want to proofread it.
François.
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