diff options
| -rw-r--r-- | fs/btrfs/extent_io.c | 5 | ||||
| -rw-r--r-- | fs/btrfs/subpage.c | 42 | ||||
| -rw-r--r-- | fs/btrfs/subpage.h | 2 |
3 files changed, 47 insertions, 2 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 3c7773995d63..87ee376b3cc8 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4262,8 +4262,9 @@ static void assert_eb_page_uptodate(const struct extent_buffer *eb, return; if (fs_info->nodesize < PAGE_SIZE) { - WARN_ON(!btrfs_subpage_test_uptodate(fs_info, page, - eb->start, eb->len)); + if (WARN_ON(!btrfs_subpage_test_uptodate(fs_info, page, + eb->start, eb->len))) + btrfs_subpage_dump_bitmap(fs_info, page, eb->start, eb->len); } else { WARN_ON(!PageUptodate(page)); } diff --git a/fs/btrfs/subpage.c b/fs/btrfs/subpage.c index 045117ca0ddc..74bc43040531 100644 --- a/fs/btrfs/subpage.c +++ b/fs/btrfs/subpage.c @@ -745,3 +745,45 @@ void btrfs_page_unlock_writer(struct btrfs_fs_info *fs_info, struct page *page, /* Have writers, use proper subpage helper to end it */ btrfs_page_end_writer_lock(fs_info, page, start, len); } + +#define GET_SUBPAGE_BITMAP(subpage, subpage_info, name, dst) \ + bitmap_cut(dst, subpage->bitmaps, 0, \ + subpage_info->name##_offset, subpage_info->bitmap_nr_bits) + +void __cold btrfs_subpage_dump_bitmap(const struct btrfs_fs_info *fs_info, + struct page *page, u64 start, u32 len) +{ + struct btrfs_subpage_info *subpage_info = fs_info->subpage_info; + struct btrfs_subpage *subpage; + unsigned long uptodate_bitmap; + unsigned long error_bitmap; + unsigned long dirty_bitmap; + unsigned long writeback_bitmap; + unsigned long ordered_bitmap; + unsigned long checked_bitmap; + unsigned long flags; + + ASSERT(PagePrivate(page) && page->private); + ASSERT(subpage_info); + subpage = (struct btrfs_subpage *)page->private; + + spin_lock_irqsave(&subpage->lock, flags); + GET_SUBPAGE_BITMAP(subpage, subpage_info, uptodate, &uptodate_bitmap); + GET_SUBPAGE_BITMAP(subpage, subpage_info, error, &error_bitmap); + GET_SUBPAGE_BITMAP(subpage, subpage_info, dirty, &dirty_bitmap); + GET_SUBPAGE_BITMAP(subpage, subpage_info, writeback, &writeback_bitmap); + GET_SUBPAGE_BITMAP(subpage, subpage_info, ordered, &ordered_bitmap); + GET_SUBPAGE_BITMAP(subpage, subpage_info, checked, &checked_bitmap); + spin_unlock_irqrestore(&subpage->lock, flags); + + dump_page(page, "btrfs subpage dump"); + btrfs_warn(fs_info, +"start=%llu len=%u page=%llu, bitmaps uptodate=%*pbl error=%*pbl dirty=%*pbl writeback=%*pbl ordered=%*pbl checked=%*pbl", + start, len, page_offset(page), + subpage_info->bitmap_nr_bits, &uptodate_bitmap, + subpage_info->bitmap_nr_bits, &error_bitmap, + subpage_info->bitmap_nr_bits, &dirty_bitmap, + subpage_info->bitmap_nr_bits, &writeback_bitmap, + subpage_info->bitmap_nr_bits, &ordered_bitmap, + subpage_info->bitmap_nr_bits, &checked_bitmap); +} diff --git a/fs/btrfs/subpage.h b/fs/btrfs/subpage.h index 0e80ad336904..5905caea8409 100644 --- a/fs/btrfs/subpage.h +++ b/fs/btrfs/subpage.h @@ -154,5 +154,7 @@ void btrfs_page_assert_not_dirty(const struct btrfs_fs_info *fs_info, struct page *page); void btrfs_page_unlock_writer(struct btrfs_fs_info *fs_info, struct page *page, u64 start, u32 len); +void __cold btrfs_subpage_dump_bitmap(const struct btrfs_fs_info *fs_info, + struct page *page, u64 start, u32 len); #endif |