Sunil Mushran
2009-Oct-22 01:05 UTC
[Ocfs2-devel] Extend FIEMAP to indicate shared extents
This adds a FIEMAP extent flag, FIEMAP_EXTENT_SHARED, to indicate extents that are shared by multiple files. The second patch makes use of the same in the OCFS2 file system to show such extents in the reflinked files. Thanks Sunil
Sunil Mushran
2009-Oct-22 01:05 UTC
[Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED
Patch adds flag FIEMAP_EXTENT_SHARED to denote extents that are
shared with other inodes.
Signed-off-by: Sunil Mushran <sunil.mushran at 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
Sunil Mushran
2009-Oct-22 01:05 UTC
[Ocfs2-devel] [PATCH 2/2] ocfs2: Use FIEMAP_EXTENT_SHARED
Adds FIEMAP_EXTENT_SHARED flag to refcounted extents. Signed-off-by: Sunil Mushran <sunil.mushran at 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
Mark Fasheh
2009-Oct-23 18:00 UTC
[Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED
On Wed, Oct 21, 2009 at 06:05:08PM -0700, Sunil Mushran wrote:> Patch adds flag FIEMAP_EXTENT_SHARED to denote extents that are > shared with other inodes.This looks pretty sane to me. Thanks Sunil.> Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com>Acked-by: Mark Fasheh <mfasheh at suse.com> --Mark -- Mark Fasheh
Sunil Mushran
2009-Nov-06 23:24 UTC
[Ocfs2-devel] Extend FIEMAP to indicate shared extents
Please could I get your ACK for these patches. This adds a FIEMAP extent flag, FIEMAP_EXTENT_SHARED, to indicate extents that are shared by multiple files. The second patch makes use of the same in the OCFS2 file system to show such extents in the reflinked files. Thanks Sunil
Sunil Mushran
2009-Nov-06 23:24 UTC
[Ocfs2-devel] [PATCH 1/2] fiemap: Add new extent flag FIEMAP_EXTENT_SHARED
Patch adds flag FIEMAP_EXTENT_SHARED to denote extents that are
shared with other inodes.
Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com>
Acked-by: Mark Fasheh <mfasheh at suse.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 */
--
1.5.6.5
Sunil Mushran
2009-Nov-06 23:24 UTC
[Ocfs2-devel] [PATCH 2/2] ocfs2: Use FIEMAP_EXTENT_SHARED
Adds FIEMAP_EXTENT_SHARED flag to refcounted extents. Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com> Acked-by: Mark Fasheh <mfasheh at suse.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; -- 1.5.6.5