diff options
| -rw-r--r-- | fs/btrfs/extent_io.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index d6d48ecf823c..9081223c3230 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -6851,14 +6851,24 @@ static void assert_eb_page_uptodate(const struct extent_buffer *eb, { struct btrfs_fs_info *fs_info = eb->fs_info; + /* + * If we are using the commit root we could potentially clear a page + * Uptodate while we're using the extent buffer that we've previously + * looked up. We don't want to complain in this case, as the page was + * valid before, we just didn't write it out. Instead we want to catch + * the case where we didn't actually read the block properly, which + * would have !PageUptodate && !PageError, as we clear PageError before + * reading. + */ if (fs_info->sectorsize < PAGE_SIZE) { - bool uptodate; + bool uptodate, error; uptodate = btrfs_subpage_test_uptodate(fs_info, page, eb->start, eb->len); - WARN_ON(!uptodate); + error = btrfs_subpage_test_error(fs_info, page, eb->start, eb->len); + WARN_ON(!uptodate && !error); } else { - WARN_ON(!PageUptodate(page)); + WARN_ON(!PageUptodate(page) && !PageError(page)); } } |