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Commit a098d8e8 authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: loop waiting on writeback 



lock_extent_buffer_for_io needs to loop around and make sure the
writeback bits are not set.

Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent cfed81a0

fs/btrfs/extent_io.c

+5 −5
Original line number Diff line number Diff line
@@ -3010,12 +3010,12 @@ static int lock_extent_buffer_for_io(struct extent_buffer *eb, 
			flush_write_bio(epd);

			flush = 1;

		}

		while (1) {

			wait_on_extent_buffer_writeback(eb);

			btrfs_tree_lock(eb);

		if (test_bit(EXTENT_BUFFER_WRITEBACK, &eb->bflags)) {

			printk(KERN_ERR "Um, ok?\n");

			if (!test_bit(EXTENT_BUFFER_WRITEBACK, &eb->bflags))

				break;

			btrfs_tree_unlock(eb);

			return 0;

		}

	}