[PATCH 3/5] 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 | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index eec118bf77ae..12e565cf6cef 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4272,6 +4272,7 @@ 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)
@@ -4295,6 +4296,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			offset_in_extent = em_start - em->start;
 		em_end = extent_map_end(em);
 		em_len = em_end - em_start;
+		em_phys_len = em->len;
 		disko = 0;
 		flags = 0;
 
@@ -4333,9 +4335,11 @@ 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))
-			flags |= FIEMAP_EXTENT_ENCODED;
+			flags |= FIEMAP_EXTENT_ENCODED |
+				 FIEMAP_EXTENT_DATA_COMPRESSED;
 
 		free_extent_map(em);
 		em = NULL;
@@ -4357,7 +4361,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			end = 1;
 		}
 		ret = fiemap_fill_next_extent(fieinfo, em_start, disko,
-					      em_len, em_len, flags);
+					      em_len, em_phys_len, flags);
 		if (ret)
 			goto out_free;
 	}
-- 
1.8.4.5

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