On Fri, Sep 01, 2017 at 05:58:47PM +0900, Naohiro Aota wrote:
> commit 524272607e88 ("btrfs: Handle delalloc error correctly to avoid
> ordered extent hang") introduced btrfs_cleanup_ordered_extents() to cleanup
> submitted ordered extents. However, it does not clear the ordered bit
> (Private2) of coresponding pages. Thus, the following BUG occurs from
> free_pages_check_bad() (on btrfs/125 with nospace_cache).
>
> BUG: Bad page state in process btrfs pfn:3fa787
> page:ffffdf2acfe9e1c0 count:0 mapcount:0 mapping: (null) index:0xd
> flags: 0x8000000000002008(uptodate|private_2)
> raw: 8000000000002008 0000000000000000 000000000000000d 00000000ffffffff
> raw: ffffdf2acf5c1b20 ffffb443802238b0 0000000000000000 0000000000000000
> page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
> bad because of flags: 0x2000(private_2)
>
> This patch clear the flag as same as other places calling
> btrfs_dec_test_ordered_pending() for every page in the specified range.
>
Reviewed-by: Josef Bacik <jbacik@xxxxxx>
Thanks,
Josef
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