[PATCH] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED

[PATCH] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED

[Sunil Mushran]

Patch adds flag FIEMAP_EXTENT_SHARED to denote extents that are
shared with other inodes.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
---
 include/linux/fiemap.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/fiemap.h b/include/linux/fiemap.h
index 934e22d..d830747 100644
--- a/include/linux/fiemap.h
+++ b/include/linux/fiemap.h
@@ -62,5 +62,7 @@ struct fiemap {
 #define FIEMAP_EXTENT_MERGED		0x00001000 /* File does not natively
 						    * support extents. Result
 						    * merged for efficiency. */
+#define FIEMAP_EXTENT_SHARED		0x00002000 /* Space shared with other
+						    * files. */
 
 #endif /* _LINUX_FIEMAP_H */
-- 
1.6.0.4

[PATCH] ocfs2: Use FIEMAP_EXTENT_SHARED

[Sunil Mushran]

Adds FIEMAP_EXTENT_SHARED flag to refcounted extents.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
---
 fs/ocfs2/extent_map.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 843db64..cdce5f8 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -786,6 +786,8 @@ int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		fe_flags = 0;
 		if (rec.e_flags & OCFS2_EXT_UNWRITTEN)
 			fe_flags |= FIEMAP_EXTENT_UNWRITTEN;
+		if (rec.e_flags & OCFS2_EXT_REFCOUNTED)
+			fe_flags |= FIEMAP_EXTENT_SHARED;
 		if (is_last)
 			fe_flags |= FIEMAP_EXTENT_LAST;
 		len_bytes = (u64)le16_to_cpu(rec.e_leaf_clusters) << osb->s_clustersize_bits;
-- 
1.6.0.4