[PATCH v9 08/16] Btrfs: don't return space for dedup extent

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If the ordered extent had an IOERR or something else went wrong we need to
return the space for this ordered extent back to the allocator, but if the
extent is marked as a dedup one, we don't free the space because we just
use the existing space instead of allocating new space.

Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
 fs/btrfs/inode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index c69e530..d32b066 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3213,6 +3213,7 @@ out:
 		 * truncated case if we didn't write out the extent at all.
 		 */
 		if ((ret || !logical_len) &&
+		    !ordered_extent->dedup &&
 		    !test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags) &&
 		    !test_bit(BTRFS_ORDERED_PREALLOC, &ordered_extent->flags))
 			btrfs_free_reserved_extent(root, ordered_extent->start,
-- 
1.8.2.1

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