[PATCH 3/4 v3] btrfs: set FIEMAP_EXTENT_DATA_COMPRESSED for compressed extents

[David Sterba <dsterba@xxxxxxx>]

Set the EXTENT_DATA_COMPRESSED flag together with EXTENT_ENCODED as
defined by fiemap spec.

Signed-off-by: David Sterba <dsterba@xxxxxxx>
---
 fs/btrfs/extent_io.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 5ea0ef5..8a28f15 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4158,6 +4158,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 
 	while (!end) {
 		u64 offset_in_extent = 0;
+		u64 em_phys_len;
 
 		/* break if the extent we found is outside the range */
 		if (em->start >= max || extent_map_end(em) < off)
@@ -4182,6 +4183,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		em_end = extent_map_end(em);
 		em_len = em_end - em_start;
 		emflags = em->flags;
+		em_phys_len = em->len;
 		disko = 0;
 		flags = 0;
 
@@ -4220,9 +4222,12 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 
 			if (ref_cnt > 1)
 				flags |= FIEMAP_EXTENT_SHARED;
+			em_phys_len = em->block_len;
 		}
-		if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags))
+		if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags)) {
 			flags |= FIEMAP_EXTENT_ENCODED;
+			flags |= FIEMAP_EXTENT_DATA_COMPRESSED;
+		}
 
 		free_extent_map(em);
 		em = NULL;
@@ -4244,7 +4249,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			end = 1;
 		}
 		ret = fiemap_fill_next_extent(fieinfo, em_start, disko,
-					      em_len, 0, flags);
+					      em_len, em_phys_len, flags);
 		if (ret)
 			goto out_free;
 	}
-- 
1.7.9

--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html